Devices and Work Zones
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KINGDOM OF SAUDI ARABIA MINISTRY OF COMMUNICATIONS
GENERAL SPECIFICATIONS FOR ROAD AND BRIDGE CONSTRUCTION
November 1998
PART NINE TRAFFIC CONTROL DEVICES AND WORK ZONES
PART NINE TRAFFIC CONTROL DEVICES AND WORK ZONES TABLE OF CONTENTS
SECTION 9.01 - INTENT OF THE CONTRACT.........................................................1 SECTION 9.02 - TRAFFIC CONTROL THROUGH WORK ZONES...........................2 9.02.1 DESCRIPTION......................................................................................2 9.02.2 WORKSITE TRAFFIC SAFETY SUPERVISOR....................................2 9.02.3 MATERIALS, EQUIPMENT AND INSTALLATION.................................3 9.02.3.1 Sign Faces...............................................................................3 9.02.3.2 Sign Plates...............................................................................4 9.02.3.3 Sign Posts................................................................................4 9.02.3.4 Barricades................................................................................4 9.02.3.5 Traffic Cones and Tubular Markers.........................................4 9.02.3.6 Vertical Panels.........................................................................4 9.02.3.7 Plastic Traffic Drums................................................................4 9.02.3.8 Temporary Guardrails...............................................................5 9.02.3.9 Portable Crashworthy Safety Barriers.....................................5 9.02.3.10 Moving Portable Crashworthy Safety Barriers......................5 9.02.3.11 Remove and Reset Portable Impact Attenuators..................5 9.02.3.12 Truck Mounted Attenuator (TMA)..........................................5 9.02.3.13 Portable Impact Attenuators..................................................5 9.02.3.14 Battery Operated Warning and Delineation Lights...............6 9.02.3.15 Warning Flashing Arrow Panels............................................6 9.02.3.16 Hazard Identification Beacon................................................6 9.02.3.17 Temporary Variable Message Sign........................................6 9.02.3.18 Temporary Raised Pavement Markers..................................7 9.02.3.19 Temporary Pavement Marking and Markers.........................7 9.02.3.20 Temporary Delineators..........................................................8 9.02.3.21 Temporary Speed Bumps and Type B Rumble Strips...........8 9.02.3.22 Channelizing Devices on Flexible Supports.........................8 9.02.3.23 Detour Bridge Materials......................................................10 9.02.3.24 Safety Vests.........................................................................10 9.02.3.25 Aggregate Subbase for Detours. ........................................10 9.02.3.26 Aggregate Base for Detours................................................10 9.02.3.27 Bituminous Concrete for Detours........................................10 9.02.4 CONSTRUCTION REQUIREMENTS.................................................10 9.02.4.1 General..................................................................................10 9.02.4.2 Traffic Handling Responsibility..............................................11 9.02.4.3 Traffic Control Devices and Services....................................12 9.02.4.3.1 General....................................................................12 9.02.4.3.2 Portable Crashworthy Safety Barriers....................12 9.02.4.3.3 Temporary Pavement Marking and Markers...........13 9.02.4.3.4 Signs and Barricades..............................................13 9.02.4.3.5 Detours....................................................................14 9.02.4.3.6 Flaggers and Pilot Car Operators...........................14 9.02.4.3.7 Hazard Identification Beacons................................14 9.02.4.4 Limitation of Operations........................................................14 9.02.4.5 Detour Bridges......................................................................15 9.02.4.6 Aggregate Subbase for Detours............................................15 9.02.4.7 Aggregate Base for Detours..................................................16 9.02.4.8 Bituminous Concrete for Detours..........................................16 9.02.5 MAINTAINING ROADWAYS DURING WORK....................................16
9.02.6 METHOD OF MEASUREMENT..........................................................16 9.02.7 PAYMENT............................................................................................18 9.02.7.1 General..................................................................................18 9.02.7.2 Payment Schedule................................................................18 9.02.7.3 Deductions for Noncompliance.............................................19 SECTION 9.03 - TRAFFIC MARKINGS.....................................................................23 9.03.1 DESCRIPTION....................................................................................23 9.03.2 MATERIALS.........................................................................................23 9.03.2.1 Retroreflectorized Traffic Lines.............................................23 9.03.2.2 Retroreflectorized Thermoplastic Traffic Lines.....................23 9.03.2.3 Retroreflectorized Epoxy Thermoplastic Traffic Lines (ETP Lines)............................................................................25 9.03.2.3.1 General....................................................................25 9.03.2.3.2 Epoxy Resins...........................................................25 9.03.2.3.3 Titanium Dioxide......................................................25 9.03.2.3.4 Calcium Carbonate..................................................26 9.03.2.3.5 Lead Chromate........................................................26 9.03.2.3.6 Glass Beads............................................................26 9.03.2.4 Retroreflectorized Traffic Control Markings, Retroreflectorized Thermoplastic Traffic Control Markings and Retroreflectorized Epoxy Thermoplastic Traffic Control Markings..........................27 9.03.2.5 Retroreflective Raised Pavement Markers...........................27 9.03.2.5.1 General....................................................................27 9.03.2.5.2 Type A Markers (Large Cateye Road Studs)..........27 9.03.2.5.3 Type B Markers (Small Cateye Road Studs)..........28 9.03.2.5.4 Type C Markers (Plain Prismatic Retroreflectors). .28 9.03.2.6 Ceramic Raised Pavement Markers.....................................29 9.03.2.6.1 General....................................................................29 9.03.2.6.2 Finish.......................................................................30 9.03.2.6.3 Physical Requirements...........................................30 9.03.2.7 Adhesive................................................................................30 9.03.3 EQUIPMENT.......................................................................................31 9.03.3.1 General..................................................................................31 9.03.3.2 Retroreflectorized Traffic Lines and Markings Application Equipment..................................................................................31 9.03.3.3 Retroreflectorized Thermoplastic Traffic Lines and Markings Application Equipment...............................................................32 9.03.3.4 Retroreflectorized Epoxy Thermoplastic Traffic Lines and Markings Application Equipment...............................................32 9.03.3.4.1 General....................................................................32 9.03.3.4.2 Pressure Tank..........................................................32 9.03.3.4.3 Spray System..........................................................32 9.03.3.5 Retroreflective and Ceramic Raised Pavement Marker Application Equipment...............................................................32 9.03.4 CONSTRUCTION................................................................................33 9.03.4.1 General..................................................................................33 9.03.4.2 Application.............................................................................34 9.03.4.2.1 Retroreflectorized Traffic Lines and Markings........34 9.03.4.2.2 Retroreflectorized Thermoplastic Traffic Lines and Markings.........................................................................35
9.03.4.2.3 Retroreflectorized Epoxy Thermoplastic Traffic Lines ........................................................................................36 9.03.4.2.4 Retroreflective and Ceramic Raised Pavement Markers...........................................................................36 9.03.4.3 Protection of Traffic Lines, Markings and Markers...............37 9.03.4.4 SurfaceTolerances and Appearance.....................................38 9.03.5 SAMPLING AND TESTING.................................................................38 9.03.6 METHOD OF MEASUREMENT..........................................................38 9.03.7 PAYMENT............................................................................................39 SECTION 9.04 - RUMBLE STRIPS AND SPEED BUMPS........................................40 9.04.1 DESCRIPTION AND APPLICATION...................................................40 9.04.2 MATERIALS.........................................................................................40 9.04.2.1 Tack Coat...............................................................................40 9.04.2.2 Bituminous Mixture................................................................40 9.04.2.3 Concrete................................................................................40 9.04.2.4 Reinforcing Steel...................................................................40 9.04.2.5 Ceramic Raised Pavement Markers.....................................40 9.04.2.6 Adhesive................................................................................40 9.04.2.7 Retroreflective Traffic Paint...................................................40 9.04.3 CONSTRUCTION REQUIREMENTS.................................................41 9.04.3.1 Speed Bumps........................................................................41 9.04.3.1.1 Surface Preparation................................................41 9.04.3.1.2 Application of Tack Coat..........................................41 9.04.3.1.3 Placing Bituminous Mixture.....................................41 9.04.3.1.4 Compaction of Bituminous Mixture.........................41 9.04.3.2 Type A Rumble Strips............................................................41 9.04.3.2.1 Preparation..............................................................41 9.04.3.2.2 Concrete Rumble Strips..........................................42 9.04.3.2.3 Texturing..................................................................42 9.04.3.2.4 Edging.....................................................................42 9.04.3.2.5 Curing......................................................................42 9.04.3.3 Type B Rumble Strips............................................................42 9.04.3.4 Type C Scored Shoulder Rumble Strips, (Indented), and Type D Scored Shoulder rumble Strips (Milled)....................42 9.04.3.4.1 Equipment...............................................................43 9.04.3.4.2 Roller Modification Options.....................................43 9.04.3.4.3 Alignment Control....................................................43 9.04.3.4.4 General Requirements............................................44 9.04.3.4.5 Placement Requirements........................................44 9.04.4 METHOD OF MEASUREMENT...........................................................45 9.04.4.1 Speed Bumps, Type A Rumble Strips and Type B Rumble Strips..........................................................................................45 9.04.4.2 Type C Scored Shoulder Rumble Strips...............................45 9.04.4.3 Type D Scored Shoulder Rumble Strips...............................45 9.04.5 PAYMENT.............................................................................................45 SECTION 9.05 - HIGHWAY SIGNING.......................................................................47 9.05.1 DESCRIPTION....................................................................................47 9.05.2 MATERIALS.........................................................................................47 9.05.2.1 Concrete................................................................................47
9.05.2.2 Reinforcing Steel...................................................................47 9.05.2.3 Sign Supports........................................................................47 9.05.2.4 Steel Channels......................................................................47 9.05.2.5 Standard Industrial Sign Supports........................................47 9.05.2.6 Object Marker and Delineator Posts.....................................48 9.05.2.6.1 Steel Posts..............................................................48 9.05.2.6.2 Aluminum Posts.......................................................48 9.05.2.6.3 Plastic Posts............................................................48 9.05.2.7 Galvanizing............................................................................48 9.05.2.8 Sign Panel Materials.............................................................48 9.05.2.8.1 Aluminum Alloy Panels, Sheets and Miscellaneous Hardware........................................................................48 9.05.2.8.2 Extruded Aluminum Panels.....................................48 9.05.2.8.3 Steel Sheet Panels..................................................49 9.05.2.8.4 Stainless Steel Bolts, Washers and Self-Locking Nuts.................................................................................49 9.05.2.8.5 Vulcanized Fiber Washers......................................49 9.05.2.8.6 Hard Rubber Washers............................................49 9.05.2.8.7 Nylon and Neoprene Fittings..................................49 9.05.2.8.8 Porcelain Enamel Coatings.....................................49 9.05.2.8.9 Letters, Numerals, Arrows, Symbols, etc................49 9.05.2.8.10 Aluminum Sign Sections........................................50 9.05.2.9 Retroreflective Sheeting........................................................51 9.05.2.10 Delineators and Retroreflectors..........................................59 9.05.2.11 Object Markers....................................................................60 9.05.3 CONSTRUCTION REQUIREMENTS..................................................60 9.05.3.1 Signs......................................................................................60 9.05.3.1.1 Design.....................................................................60 9.05.3.1.2 Shop Drawings........................................................60 9.05.3.2 Storage and Shipment of Signs............................................60 9.05.3.3 Placement and Orientation...................................................61 9.05.3.4 Footings for Posts.................................................................61 9.05.3.5 Sign Posts.............................................................................61 9.05.3.5.1 General....................................................................61 9.05.3.5.2 Painting....................................................................62 9.05.3.6 Fastening Signs to Sign Posts..............................................62 9.05.3.7 Delineators and Retroreflectors............................................62 9.05.3.8 Object Markers......................................................................63 9.05.4 REPLACEMENT SIGNS.....................................................................63 9.05.5 METHOD OF MEASUREMENT..........................................................63 9.05.6 PAYMENT............................................................................................64
MOC General Specifications - November 1998
PART NINE: TRAFFIC CONTROL DEVICES AND WORK ZONES SECTION 9.01 - INTENT OF THE CONTRACT Section 9.01 Intent of Contract. The intent of the contract is to provide for the safe construction and completion of the work described. It is also the intent of the contract that the work be performed in a manner that assures the safety and convenience of the road users and protects the residents and property adjacent to the project. The contract contains both temporary and permanent Traffic Control work items to safely accommodate public traffic through construction and maintenance work zones and upon completion of the construction and maintenance works.
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MOC General Specifications - November 1998
SECTION 9.02 - TRAFFIC CONTROL THROUGH WORK ZONES 9.02.1 DESCRIPTION. This Work shall consist of the safe accommodation and protection of traffic through or around construction and maintenance work zones; the establishment, construction, maintenance, and obliteration of detours; and the furnishing, erection, moving, replacing, cleaning, and removing of all traffic control devices, in reasonably close conformity with these General Specifications, the Special Specifications, the plans, including Traffic Control Plans (TCP's), the MOC Manual on Uniform Traffic Control Devices (M.U.T.C.D.), and Work Zone Traffic Control Handbook. ITEMS IN BILL OF QUANTITIES Traffic Control Management Flashing Warning Arrow Panels Barricades Traffic Cones and Tubular Markers Temporary Signs Plastic Traffic Drums Flaggers Pilot Cars Portable Crashworthy Safety Barriers Moving Crashworthy Safety Barriers Remove and Reset Portable Impact Attenuators Temporary Guardrail Truck Mounted Attenuators Portable Impact Attenuators Temporary Pavement Markings Temporary Raised Pavement Markers Temporary Rumble Strips Temporary Speed Bumps Pavement Marking Removal Vertical Panels Chevrons Warning Lights Hazard Identification Beacons Temporary Variable Message Signs Temporary Traffic Signals Channelizing Devices on Flexible Supports Detour Bridge 9.02.2 WORKSITE TRAFFIC SAFETY SUPERVISOR. The Contractor shall provide a competent worksite traffic safety supervisor for the project who is someone other than the Project Manager. This supervisor shall be identified no later than at the preconstruction conference and the supervisor's address and phone numbers provided. The worksite traffic safety supervisor shall be responsible for and coordinate the safe handling of traffic through the work zone and shall have the following minimum qualifications: 1. Have completed an approved training course in the safe handling of traffic through highway work zones.
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MOC General Specifications - November 1998
2. Understand the contract and M.U.T.C.D. requirements. The worksite traffic safety supervisor shall perform the following: 1. Inspect and correct the condition and position of traffic control devices in use each work day and night. 2. Review equipment operation and storage, and material handling and storage relative to traffic safety. 3. Hold traffic safety meetings with the engineers and superintendents of the Contractors prior to beginning Construction and periodically thereafter as necessary or as directed by the Engineer. 4. Furnish a weekly written certification to the Engineer that daily and nightly inspections were conducted and that project traffic control devices met or exceeded the contract requirements. Report all changes or corrective actions taken to maintain and protect traffic through the project. 5. Prepare and submit traffic control plans and working drawings and alternate traffic control proposals according to Subsection 1.03.2, "Plans and Working Drawings” in these General Specifications. 6. Prepare or obtain from Police and submit to the Engineer accident reports on all accidents occurring within the Project limits for the duration of the project. If the plans or Special Specifications do not contain traffic control plans and working drawings, it is the contractor’s responsibility to prepare them, including geometric, pavement structural section and cross section detour layouts, sign and other traffic control device locations and traffic handling schemes. They shall be submitted to the engineer and forwarded, with the consultant’s recommendations, to the Ministry Road Services Department for final review and approval. 9.02.3 MATERIALS, EQUIPMENT AND INSTALLATION. Traffic control devices shall conform to the material requirements in the contract provisions. Cases, conditions, and details not covered in the plans, in these General Specifications or the Special Specifications shall conform to the applicable provisions of the Ministry's latest M.U.T.C.D., STANDARDS FOR ROAD SAFETY FEATURES, HIGHWAY DESIGN MANUAL VOLUME 4 - STANDARD DRAWINGS, AND OTHER MINISTRY ROAD SERVICES DEPARTMENT STANDARD APPLICATION MANUALS including their Work Zone Traffic Control Handbook. 9.02.3.1 Sign Faces. All sign faces, barricades, vertical panels, tubular markers and flaggers paddles shall use sheeting meeting the requirements of Paragraph 9.05.2.9, "Retro-reflective Sheeting" in these General Specifications. These devices shall be maintained at no less than fifty percent (50%) of their original reflectivity throughout the period of the contract. Installation shall be in accordance with M.U.T.C.D. Section 5.02. 9.02.3.2 Sign Plates. Sign plates, one side of which is less than one and onetenth (1.1) meter, shall have a three (3) millimeter thickness. For plates, one side 3
MOC General Specifications - November 1998
which is more than one and one-tenth (1.1) meter, the thickness shall be five (5) millimeters. All sign plates shall conform to the requirements of Paragraph 9.05.2.8 "Sign Panel Materials" in these General Specifications. 9.02.3.3 Sign Posts. Sign posts for temporary signs may be standard industrial billet or rail steel pipe, flanged U-channel, or I channel (I.P.E.) as detailed in Paragraphs 9.05.2.4 "Steel Channels," 9.05.2.5 "Standard Industrial Sign Supports" and 9.05.2.6 "Object Marker and Delineator Posts" in these General Specifications except that galvanizing of sign posts for temporary signs is not required. Steel pipe and I.P.E. sign supports shall have a slip base breakaway support in accordance with the M.O.C. Sign Erection Standards Manual (TS-O2). Signs requiring two (2) or three (3) posts shall use I.P.E. posts in accordance with the M.O.C. Road Services Department "DIMENSIONING OF SIGN POSTS AND FOOTINGS FOR DIRECTIONAL SIGNS.” 9.02.3.4 Barricades. Type I or II barricades shall be constructed of wood, metal, or plastic. The Type I barricades shall collapse when tipped over. Plastic pipe for Type II barricades shall conform to ASTM D2729. Installation shall conform to M.U.T.C.D. Section 5.03. 9.02.3.5 Traffic Cones and Tubular Markers. Cones and tubes shall be manufactured of a material capable of withstanding vehicle impact without damage to the cones or tubes. Red shall be the predominant color of cones and tubes. The cones shall be a minimum of seven hundred (700) millimeters high and have a retroreflectorized yellow band at least one hundred fifty (150) millimeters in width placed no more than seventy-five (75) millimeters from the top of the cone. This increased cone height supersedes the shorter minimum cone height shown in the M.U.T.C.D. Subsection 5.03 B. Cones and tubes shall be capable of remaining upright during normal traffic flow and wind conditions in the area where they are used. Installation shall conform to M.U.T.C.D. Sections 5.06 and 5.07. 9.02.3.6 Vertical Panels. Vertical panels shall be constructed of wood, metal or plastic with retro-reflectorized red stripes on a retro-reflectorized yellow background. They shall be three hundred (300) millimeters in width and shall have a vertical dimension of nine hundred (900) millimeters. Installation shall be on a post or other non-flexible support and conform to M.U.T.C.D. Subsection 5.03C. 9.02.3.7 Plastic Traffic Drums. Traffic Drums shall be commercially constructed out of plastic. They shall be a minimum of approximately eight hundred (800) millimeters high and a minimum of approximately five hundred (500) millimeters wide with stepped taper shape for ease of stacking and transportation. The markings on each drum shall consist of at least two horizontal retro-reflecting yellow and two red bands which completely encircle the drum. Bands shall be between one hundred (100) millimeters and two hundred (200) millimeters in width. Installation shall conform to M.U.T.C.D. Subsection 5.03D. Metal barrels are not acceptable and are not to be used. 9.02.3.8 Temporary Guardrails. Temporary guardrail shall generally conform to Section 6.01, "Crashworthy Safety Barriers" in these General Specifications and the M.U.T.C.D. for posts and steel rail. Used guardrail material will be permitted providing it is neat in appearance, straight and is approved by the Engineer. 4
MOC General Specifications - November 1998
Certificates of Guarantee will not be required for used rail if the rail apparently meets the dimensional and other physical requirements of Section 6.01 "Crashworthy Safety Barriers" in these General Specifications. 9.02.3.9 Portable Crashworthy Safety Barriers. Portable crashworthy safety barriers shall conform to the requirements of Section 6.01, "Crashworthy Safety Barriers" in these General Specifications and the M.U.T.C.D. for the Type specified; modified, if necessary, for temporary installation. They may be new or used, provided they are in good condition. Use and placement shall meet the requirements of the M.U.T.C.D., Subsections 5.03F and 5.06D3. Polyethylene water-filled portable crash worthy safety barriers may be used in lieu of concrete if approved by the engineer as meeting all performance requirements. In every case, individual Portable Crashworthy Safety Barriers shall have provisions for full strength connection between adjacent barrier sections and proper crashworthy end treatments such as portable impact attenuators, or safe tapers used in accordance with the M.U.T.C.D. and safe clear zone requirements. These connection and end treatments must be established in every installation of Portable Crashworthy Safety Barriers. 9.02.3.10 Moving Portable Crashworthy Safety Barriers. Moving Portable Crashworthy Safety Barriers must be done using equipment (transfer vehicle) that has been inspected and demonstrated to produce satisfactory performance in a safe manner. 9.02.3.11 Remove and Reset Portable Impact Attenuators. When portable impact attenuators are no longer required as crashworthy end treatments for crashworthy safety barriers or to shield other hazards they shall be removed and reset as crashworthy end treatments on other temporary work zone crashworthy barriers or hazards as directed by the engineer. New portable impact attenuators shall not be used when existing portable impact attenuators can be removed and reset. The removal and resetting shall be done in a safe manner and include the replacement of any parts lost or damaged in the removal process. 9.02.3.12 Truck Mounted Attenuator (TMA). Truck Mounted Attenuators which meet the U.S. National Cooperative Highway Research Program (NCHRP) 350 requirements for one hundred (100) kilometers per hour (kph) impacts shall be provided. 9.02.3.13 Portable Impact Attenuators. Portable Impact Attenuators which meet the U.S. NCHRP 350 requirements for one hundred (100) kilometers per hour (kph) impacts shall be used at all barrier ends with tapers away from traffic of less than 15:1, and when the end will not be outside the required clear zone. The majority of the Portable Impact Attenuator must be reusable after a design impact. 9.02.3.14 Battery Operated Warning and Delineation Lights (Flashing or Steady). Types A, B and C warning and delineation lights shall meet the minimum requirements of and be used as specified in the M.U.T.C.D. Section 5.05. Steady lights shall be used to outline intended traffic paths on safety barriers, plastic traffic drums and other channelization devices.
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MOC General Specifications - November 1998
9.02.3.15 Warning Flashing Arrow Panels. Types A, B and C Warning Flashing Arrow Panels shall meet the minimum requirements and be installed to conform to M.U.T.C.D. Subsection 5.05C. 9.02.3.16 Hazard Identification Beacon. The beacons shall be installed and have a yellow lens with a visible diameter of at least two hundred (200) millimeters and preferably three hundred (300) millimeters. It shall give a yellow round traffic signal indication and flash at a rate of not less than fifty (50) or more than eighty (80) times per minute in accordance with the M.U.T.C.D. Subsection 5.05B. 9.02.3.17 Temporary Variable Message Sign. The Contractor shall provide and operate variable message signs where shown on the plans and as directed by the Engineer. The signs shall be self-contained and trailer mounted. The sign system shall consist of a three-line matrix panel assembly, controller, power source and structural support system. The message display shall be visible and legible from a distance of not less than three hundred (300) meters. Messages shall be cycled so that three message cycles are displayed to the driver while approaching the sign at ninety (90) kilometers per hour from three hundred (300) meters. The trailer and sign support system shall be painted red and/or yellow. The unit shall be capable of operating on a continuous basis for not less than five days. The unit shall be capable of raising and lowering the message panel electrically and manually in the vertical axis and rotating it thirty (30) degrees in a horizontal axis. While in the raised position the bottom of the sign panel shall be a minimum of two and four-tenths (2.4) meters above the pavement surface. The sign panel shall be capable of rotating three hundred sixty (360) degrees and be stopped in any position. The sign panel shall be three lines in height, and shall contain at least eight modular and interchangeable matrix assemblies per line. Each modular matrix assembly shall be capable of displaying a character. The controller shall be easily located and accessible to allow the entry of all sign and message functions from a control cabinet on the trailer mounted unit. A keyboard shall be incorporated into the controller to allow the user to generate and store a minimum of twenty (20) preprogrammed messages and any message entered by operator. The controller shall have the capability of retrieving all messages stored in the temporary memory for as long as the sign panel is in operation. A START/STOP switch shall be provided on the controller to activate the power supply and sign panel. An entry code shall be required to gain entry to the controller to access the memory and display messages on the exterior sign panel. The sign shall be either bulb or dot matrix. Other types such as flipdisk, LED and fiberoptic will be considered for acceptance only if they meet all the sign system requirements contained in this paragraph.
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MOC General Specifications - November 1998
Bulb Matrix Variable Message Sign - The sign panel assembly shall contain eight lamp bank matrices of a minimum of 7 X 5 lamps per line. The lamp bank shall display up to eight characters minimum, forty-five (45) centimeters minimum in height. The lamps shall be rugged, high performance, high fluorescent yellow, fifty (50) millimeters in diameter, sealed beam units. The lamps shall be rated at twenty-four (24) volts, twenty (20) watts with a light output of eight hundred (800) foot-candles minimum. Dot Matrix Variable Message Sign - Each dot matrix assembly shall contain electromagnetically activated dots. Dot color shall be fluorescent yellow. Illumination of the sign panel shall be by internal backlight. Activation of the backlight system shall be by photo cell system to measure both vertical and horizontal ambient lighting. A manual over-ride switch shall be provided to deactivate the photo cell system. The Contractor shall operate the variable message signs including setup, computer program, placing (or moving as directed), and maintenance of the signs. All fuel or refueling costs shall be included. The signs may be partially solar powered or even totally solar powered if sufficient power can be generated and stored for day and nighttime operation. 9.02.3.18 Temporary Raised Pavement Markers. Temporary raised pavement markers shall be retro-reflective or non-reflective. The retro-reflective markers shall comply with the requirements contained in Subparagraph 9.03.2.5.4, "Type C Markers" (Plain Prismatic Retro-reflectors) in these General Specifications. The non-retro-reflective markers shall comply with the requirements contained in Paragraph 9.03.2.6 "Ceramic Raised Pavement Markers" in these General Specifications. Installation and application shall conform to Paragraph 9.03.3.5 "Retro-reflective and Ceramic Raised Pavement Markers" and Subparagraph 9.03.4.2.4 "Retro-reflective and Ceramic Raised Pavement Markers" in these General Specifications. 9.02.3.19 Temporary Pavement Marking and Markers. Temporary traffic markings may be retro-reflectorized or thermoplastic retro-reflectorized or epoxy thermoplastic retro-reflectorized traffic paint or pressure sensitive preformed marking tape. It may also be supplemented with Type C temporary retro-reflective raised pavement markers (Plain Prismatic Retro-reflectors). Preformed tapes shall be removable or non-removable. Removable tape shall be capable of being removed intact or in large strips. Non-removable tape is designed to remain in place. Tape shall consist of glass spheres of a high optical quality imbedded into a binder on a suitable backing that is precoated with a pressure sensitive adhesive. The spheres shall be of uniform gradation and distributed evenly over the surface of the color standards for pavement markings and shall be readily visible when viewed under automotive headlights at night. The marking tape, when applied in accordance with manufacturer's recommended procedures, shall be weather resistant and shall show no appreciable fading, lifting, or shrinkage during the useful life of the marking. The tape, as applied, shall be of good appearance, free of cracks, and the edges shall be true, straight, and unbroken.
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MOC General Specifications - November 1998
Temporary markings shall be placed each day before traffic is allowed to use the section during nighttime. Very short sections may utilize temporary raised reflectorized markers only, if approved by the engineer. Painted markings shall conform to Section 9.03 "Traffic Markings" in these General Specifications. Retro-reflective raised pavement markers shall also conform to Section 9.03, “Traffic Markings” in these General Specifications. They shall be white (crystal), yellow, or red, or a combination thereof, as required by the Plans or M.U.T.C.D. Installation shall conform to M.U.T.C.D. Section 5.04. 9.02.3.20 Temporary Delineators. Temporary delineators shall conform to the requirements of Section 9.05 "Highway Signing" in these General Specifications and the M.U.T.C.D. Installation shall conform to M.U.T.C.D. Subsection 5.04C. 9.02.3.21 Temporary Speed Bumps and Type B Rumble Strips. Temporary speed bumps and rumble strips shall comply with the materials and installation requirements contained in Paragraphs 9.04.3.1, "Speed Bumps" and 9.04.3.3, "Type B Rumble Strips" in these General Specifications. 9.02.3.22 Channelizing Devices on Flexible Supports. Channeling devices on flexible supports shall be used in work zone areas where channelization devices are frequently impacted by errant vehicles on high or low speed roadways. Theses devices shall be fabricated to withstand repeated impacts with minimal maintenance to devices and damage to vehicles. Devices shall be erected on a fixed, portable or driveable flexible base as detailed in the traffic control plans (TCP) or as approved by the Engineer. Fixed bases shall be surface mount or driveable type. All sign panels for channeling devices on flexible supports shall be manufactured from polyethylene that have excellent resistance to temperature extremes and ultraviolet degradation. Portable bases shall be fabricated from a flexible material such as virgin rubber and/or recycled rubber with an approximate weight of seventeen (17) kilograms. Pavement surfaces shall be prepared in a manner that will insure proper bonding of adhesives and surface mount bases to the pavement surfaces. Adhesives shall be prepared and applied as per manufacturers recommendations. Application and removal of devices shall not cause detrimental effects to the final pavement surfaces including pavement surface discoloration or surface integrity. Driveable bases shall not be permitted on final pavement surfaces. All application and removal procedures of fixed bases shall be approved by the Engineer. Channeling devices on flexible supports shall generally be of five (5) types: Opposing Traffic Lane Divider, Construction Object Panel, Vertical Panel, Chevron Alignment and Channelizer. The Opposing Traffic Lane Dividers are delineation devices used as center lane dividers to separate opposing traffic on a minimum two-lane, two-way operation. The rectangle upright double panels shall be approximately three hundred (300) 8
MOC General Specifications - November 1998
millimeters wide by five hundred (500) millimeters set on a flexible support with the top approximately one (1) meter above the road surface as shown in the M.O.C. Road Services Department Work Zone Traffic Control Handbook. The legend on the panels shall be two opposing retro-reflectorized arrows on a retro-reflectorized yellow background with a red border similar to those on the two-way traffic sign (W18-1 in the M.O.C. Manual on Uniform Traffic Control Devices Subsection 5.02.F.3). The Construction Object Panels (COP) are rectangular upright single or double panels approximately three hundred (300) millimeters wide by five hundred (500) millimeters high having one hundred (100) millimeter wide retro-reflectorized red stripes on a retro-reflectorized yellow background set on a flexible support with the top of the panel approximately one (1) meter above the road surface as shown in the M.O.C. Road Services Department Work Zone Traffic Control Handbook. They shall be used to delineate construction objects or areas such as gore areas. The vertical panels are rectangular upright single panels approximately three hundred (300) millimeters wide and nine hundred (900) millimeters high having the same legend as those described in the M.O.C.M.U.T.C.D., paragraph 5.03.C except that it shall be set on a flexible support with the top of panel approximately one and five-tenths (1.5) meter above the road surface as shown in the M.O.C. Road Services Department Work Zone Traffic Control Handbook. The chevron alignment panels shall have the same legend and size as those described in M.O.C.M.U.T.C.D. paragraph 5.02.F.11 except that it shall be set on a flexible support with the top of the panel one and five-tenths (1.5) meters above the road surface as shown in the M.O.C. Road Services Department Work Zone Traffic Control Handbook. Chevron alignment panels may also be set on the top of plastic traffic drums and concrete crashworthy safety barriers on shortened bases but with the top of the panel still one and one-half (1½) meters above the ground surface. The tubular channelizer is a flexible surface mounted tubular channelizer specifically designed for channelization of construction work zone traffic through Two (2) Lane-Two (2) Way detours. The vertical tubes shall be made of polymer alloy weighing a minimum of one and seven-tenths (1.7) kilograms (with base). The tubes shall have a diameter of seventy-five (75) millimeters and a minimum height of nine-tenths (0.9) meters. They shall be of red color with a minimum of three (3) retro-reflective yellow stripes with a height of seventy-five (75) millimeters each as shown in the M.O.C. Road Services Department Work Zone Traffic Control Handbook. 9.02.3.23 Detour Bridge Materials. Detour bridge materials shall be as specified in the plans and Special Specifications. Other than new materials may be used if approved by the Engineer, provided they can be properly identified and exhibit no detrimental damage. 9.02.3.24 Safety Vests. All workers, supervisory personnel, supervising consultants and Ministry officials involved in work zone traffic control or work zone construction operations must wear safety vests for their protection and identification by passing traffic. The color of the vests shall be retro-reflective red.
9
MOC General Specifications - November 1998
9.02.3.25 Aggregate Subbase for Detours. The aggregate subbase materials used in the construction of detours shall comply with the requirements for Grading I or II in Subsection 3.02.2, "Materials" in these General Specifications. 9.02.3.26 Aggregate Base for Detours. The aggregate base materials used in the construction of detours shall comply with the requirements for Grading I, II or III in Subsection 3.03.2, "Materials" in these General Specifications. 9.02.3.27 Bituminous Concrete for Detours. The bituminous concrete used in the construction of detours shall comply with the material requirements for Subsection 4.05.9, "Minor Bituminous Concrete" in these General Specifications. 9.02.4 CONSTRUCTION REQUIREMENTS. 9.02.4.1 General. The Contractor shall install and maintain temporary traffic control devices adjacent to and within the project according to the approved traffic control plans and working drawings, the M.O.C. M.U.T.C.D and the M.O.C. Road Services Department Work Zone Traffic Control Handbook. The Contractor shall install and maintain traffic control devices as follows: 1. Furnish and place traffic control devices before the start of construction operations. 2. Install only those traffic control devices needed for each stage or phase. 3. Relocate temporary traffic control devices as necessary. 4. Remove devices that no longer apply to the existing conditions. 5. Immediately replace any device that is lost, stolen, destroyed, inoperative, or damaged or when its retro-reflectivity is reduced by fifty percent (50%) of its required initial retro-reflectivity. 6. Keep temporary traffic control devices clean and their reflectivity well maintained. 7. Remove all temporary traffic control devices upon contract completion or when approved. 8. Cover or remove all conflicting permanent signs during the work period. 9. Provide acceptable Truck Mounted Attenuator (TMA) protection for all shadow and barrier vehicles. The provision of an adequate supply of electrical power for the proper operation of warning lights, flashing arrow boards, temporary traffic signals, and temporary lighting in connection with the performance of the Work shall be the responsiblity of the Contractor. All costs involved in the supply of electrical power are to be included in the prices entered in the Bill of Quantities relating to the Works, in which power is to be used. No separate payment whatsoever shall be made for supply of electrical power or for issuance of the necessary permits thereof. The Contractor shall liaise and coordinate with the Municiplaities or other local Authorities regarding approval procedures and other formalities related to supply of power or shall provide the necessary electrical power by his own means. Whichever the case, the source of power supply shall be approved by the Engineer.
10
MOC General Specifications - November 1998
9.02.4.2 Traffic Handling Responsibility. The M.U.T.C.D. includes standard drawings which indicate typical layouts of the traffic control devices for various situations. The plans include standard drawings of traffic control devices, and may also include special drawings indicating a method of handling traffic through special work areas or activities which are not covered by the M.U.T.C.D. The combination of the M.U.T.C.D., the contract plans, General Specifications, and Special Specifications relative to control of traffic through work zones will be referred to as the Traffic Control Plan (TCP). It shall be the responsibility of the Contractor to thoroughly understand the requirements of the Traffic Control Plan for the project. The arrangement of traffic control signs, markings, and devices shall be in accordance with the M.U.T.C.D. and the contract, modified to meet actual field conditions and the Contractor's method of operation. Such modifications shall be subject to the approval of the Road Services Department, M.O.C. The Contractor may propose, in writing, alternate traffic control proposals for the handling of traffic through and around the work zone. The Engineer will recommend to the Road Service Department approval, disapproval or approval with modification of the Contractor's proposal. Such alternative Traffic Control Plans shall have the written approval of the Ministry, based on an equivalent level of service and safety to the public, prior to their implementation. Access across and through the construction area shall be provided at the minimum necessary for the convenience of the public. Access shall be controlled or limited when appropriate, by the barriers together with signs guiding the public to approved access points. The Engineer shall be the final authority in approving or designating access points. The safe and satisfactory movement of traffic through the project is of paramount importance and shall be a prime responsibility of the Contractor. The Contractor shall be responsible for evaluating, planning for, and setting up all traffic control arrangements in connection with each construction or maintenance operation. The Contractor shall immediately recognize any extreme hazard to the public and correct the hazard. The Engineer shall identify deficiencies in the Contractor's procedures and order correction, but the Contractor is primarily responsible for managing the traffic control on the project. 9.02.4.3 Traffic Control Devices and Services. 9.02.4.3.1 General. Traffic control devices and services shall be provided and maintained both inside and outside the project limits as needed to facilitate traffic guidance in accordance with the fundamental principles contained in the M.O.C. M.U.T.C.D. Part 5, "Traffic Controls For Work Areas.” All signs and devices shall be kept in good repair. The Contractor shall keep reserve devices reflecting ten percent (10%) of the devices in use with a minimum of one (1) each in order to quickly provide replacements when needed. Prior to start of construction or maintenance operations, the Contractor shall place such signs, barricades, portable crashworthy safety barriers, markings, and other traffic control devices as may be required by the Traffic Control Plan. During nonworking hours and following completion of a particular construction or maintenance operation, all warning signs, except those necessary for the safety of 11
MOC General Specifications - November 1998
the public, shall be removed or entirely covered with either black plastic sheeting or plywood sheets so that the entire sign panel will not be visible. Retro-reflective materials on signs, drums, barricades, and other devices shall be kept clean, free from dirt, mud, and other roadway grime. Scratches, rips and tears in sheeting shall be promptly corrected by the Contractor to the Engineer's satisfaction. Retro-reflective sheeting material shall be replaced when the Engineer determines that the reflectivity is less than fifty percent (50%) of the retro-reflectivity of new material. Nighttime operations, if permitted by the Traffic Control Plan (TCP), shall be illuminated by a lighting system approved by the Engineer. The lighting system shall be positioned and operated to preclude glare to the approaching traveling public. The lighting system shall not include incandescent lights. Floodlights shall be used to mark flagger stations during the hours of darkness. Gas or oil lanterns, or open-flame torches shall not be used on any construction or maintenance project. 9.02.4.3.2 Portable Crashworthy Safety Barriers. Portable crashworthy safety barriers shall be used to separate public traffic from construction and maintenance equipment, workmen and work areas. They shall be placed end-toend and connected using acceptable pins or otherwise acceptable connectors to form a continuous safe barrier with acceptable tapers or crashworthy end treatments on each end. Isolated or unconnected barriers will not be permitted as they are safety hazards by themselves. Portable crashworthy safety barriers shall not be used to form channelization tapers of any less than fifteen to one (15:1). Where two-way traffic must be maintained on one roadway of a normally divided highway, opposing traffic shall be separated either with portable crashworthy safety barriers, plastic drums, or opposing traffic lane dividers and tubular channelizers throughout the length of two-way operations. Where possible the portable crashworthy safety barrier shall be tied to an existing structure. Otherwise, the barrier shall be tapered, and fitted with a terminal section, if this can be done safely, or fitted with a portable impact attenuator. 9.02.4.3.3 Temporary Pavement Marking and Markers. Temporary retroreflectorized pavement marking and markers shall be used in combination with appropriate warning signs, channelizing devices, and delineation to clearly indicate the required vehicle paths. When a paved temporary roadway (detour) is required to reroute traffic to bypass a construction or maintenance zone, temporary retroreflectorized pavement markings (paint lines symbols, letters and raised pavement markers) and channelizing devices shall be placed on the approaches to and throughout the length of the temporary pavement. The Engineer shall direct removal by a specific method or may require an overlay if he deems the Contractor's removal and obliteration unsatisfactory. Warning signs with legend UNMARKED PAVEMENT AHEAD shall be used only on a short-term basis when temporary or permanent pavement markings are obscured and new markings have not been placed. It is intended that temporary markings or markers be in place each day before traffic is allowed to use a section at night. 12
MOC General Specifications - November 1998
9.02.4.3.4 Signs and Barricades. All barricades and signs shall be placed for best visibility and legibility, maintained in good condition, and kept clean and free of dirt at all times. Contractor's and Engineer's vehicles and equipment must be parked so that barricades and signs are visible to approaching traffic at all times. Where traffic is maintained through or over any part of the project, the Contractor will be required to mark all hazards within the limits of the project (including connecting roads) with barricades, warning, regulatory and guide signs. Warning signs are to be placed well in advance of the hazard; the distance depending on topography and existing approach speeds. Restricted speed zones, when authorized in the Traffic Control Plan (TCP), or by the Engineer, shall be maintained over only the minimum length of road which is practicable for the proper protection of traffic and the satisfactory prosecution of the Work. Any reduction in speed should be consistent with the project requirements. Signs with more than ninety (90) centimeters length of horizontal side shall be mounted on two posts. Sign plates of more than two hundred twenty (220) and up to three (300) centimeters horizontal length shall be fixed on three (3) posts with suitable bracing. Sign plates of bigger widths than three hundred (300) centimeters shall be constructed with one (1) extra post for each extra meter of width with suitable bracing's. Crashworthy support posts are required. Portable or removable mountings for signs which are frequently moved may be used. Such mounting shall be heavy enough not to turn over in the wind, and the base shall not be appreciably wider than the sign. The bottom of the sign shall be at least two (2) meters above the ground. Rocks, asphalt or concrete pieces, construction materials, or other debris shall not be used as weighing device for portable signs, barricades or drums. Sandbags will be permitted as long as they are not more than thirty (30) centimeters above the ground. 9.02.4.3.5 Detours. Detours shall be constructed as shown on the plans or as directed by the Engineer to the required lines and grades. Prior to opening a detour to traffic, all warning signs, barricades, portable crashworthy safety barriers, markings, channelizing devices, truck mounted attenuators and other required traffic control devices shall be in place and approved by the Engineer. Guide signs, detour signs, or route markers shall be installed throughout the length of the detour to provide adequate guidance to the motoring public. The Contractor shall maintain the detour and traffic control devices in a satisfactory condition for traffic as directed by the Engineer, 9.02.4.3.6 Flaggers and Pilot Car Operators. Flaggers and pilot car operators shall be physically and mentally qualified, trained in their duties, efficient, 13
MOC General Specifications - November 1998
and courteous, as outlined in the M.U.T.C.D. Each flagger on duty shall be identified with appropriate and distinctive apparel, including red retroreflective vest and hat, and shall be equipped with a highly visible, retroreflective "Stop/Slow" hand sign conforming to the M.U.T.C.D. Flags will not be permitted unless approved by the Engineer. Pilot cars shall be identified with an appropriate informative sign mounted on the rear thereof and with a rotating amber beacon, and shall be operated at prudent speeds. Strobe light beacons will not be permitted. 9.02.4.3.7 Hazard Identification Beacons. The hazard identification beacon shall be used only to supplement an appropriate warning sign used in or in advance of work areas. 9.02.4.4 Limitation of Operations. limited as follows:
The Contractor's operations shall be
1. No contract Work shall be performed during the hours of darkness unless authorized by the Engineer. 2. The Contractor's equipment shall be operated in the direction of the traffic, where practical. 3. The paving of adjacent traffic lanes shall be completed to the same elevation each workday to the extent practicable. 4. The Contractor will coordinate his activities in such a way as to maintain traffic flow on one lane of pavement on a two-lane road and on one-lane of pavement in each direction of travel on a four-lane road. Two-way traffic shall be provided whenever practicable and all operations shall be conducted in a sequence that will reduce the necessity for one-way traffic to a minimum. 5. The Contractor will coordinate with the Engineer on a location for a storage and parking area. Selection of all storage and parking areas is subject to the approval of the Engineer. The boundary of all such areas shall be located at least ten (10) meters from the edge of pavement. Access and egress from each area is subject to the approval of the Engineer. 6. During nonwork hours, pavers and rollers shall be parked in the storage areas, or at least ten (10) meters from the edge of any pavement open to traffic. When it is not feasible to meet these restrictions due to land features or ROW restrictions, pavers and rollers may be parked a minimum of three (3) meters from the pavement edge, as approved by the Engineer. Three (3) or four (4) Type I barricades, with Type A warning lights, shall be placed on the pavement side of the parked pavers and rollers. All other equipment shall be stored at approved storage and parking areas. Points of access and egress from all staging areas shall have adequate sight distance. 7. Contractor's material shall be stored only at the approved Contractor's storage and parking area (or at locations approved by the Engineer).
14
MOC General Specifications - November 1998
8. During periods of inclement weather, or during periods of unusually heavy traffic, the Engineer may require all affected operations to cease in order that traffic may be adequately accommodated. 9. The Contractor shall not switch lane closure during a work shift to accommodate changes in operations except as approved by the Engineer. Prior to switching traffic to a completed lane, the Contractor shall have the following: (1) Adequate personnel and equipment to remove and set up all traffic control devices as required by the Traffic Control Plan (TCP). (2) Adequate communications to safely control traffic. (3) Paving and related equipment removed from the travel lane. 9.02.4.5 Detour Bridges. Detour bridges shall be constructed in accordance with the Plans and Special Specifications. At the completion of the permanent bridge, the detour bridge shall be removed and disposed of by the Contractor. The approaches and footings to the detour bridge shall be leveled or restored as approved by the Engineer to eliminate all visible evidence of its presence. 9.02.4.6 Aggregate Subbase for Detours. The aggregate subbase used for detours shall be constructed in accordance with Subsection 3.02.5, "Construction" in these General specifications. 9.02.4.7 Aggregate Base for Detours. The aggregate base used for detours shall be constructed in accordance with Subsection 3.03.5, "Construction" in these General Specifications. 9.02.4.8 Bituminous Concrete for Detours. The bituminous concrete used for detours shall be constructed in accordance with Subsection 4.05.9, "Minor Bituminous Concrete" including the placement of a prime coat in accordance with Section 4.02, "Bituminous Prime Coat, Tack Coat and Fog Seal" in these General Specifications. 9.02.5 MAINTAINING ROADWAYS DURING WORK. The Contractor shall perform roadway maintenance as follows: 1. Construct, maintain and remove detour roads and bridges. 2. Maintain intersections with trails, roads, streets, businesses, parking lots, residences, garages, farms and other features. 3. Maintain public roadways for public traffic during all work suspensions. 4. Maintain a reasonably dust-free traveled way. 5. Remove piles of soil and other material from traveled way. The Contractor shall maintain the roadway in a safe and acceptable condition. If corrective action is requested by the Engineer and the corrective action is not taken to provide a safe roadway situation, the Engineer shall impose Paragraph 9.02.7.3 15
MOC General Specifications - November 1998
"Deductions for Non-Compliance" in these General Specifications including issuing "Stop Work" orders until the deficiency is corrected. The Contractor shall not be paid for any work accomplished while the "Stop Work" order is in effect. Written notice of the lifting of the "Stop Work" order shall be provided to the Contractor by the Engineer before any work on the job is restarted. If necessary to insure the safety of the motoring public, the Engineer shall arrange for the correction of the deficiency in a manner he deems appropriate, the cost of which will be the responsibility of the Contractor. 9.02.6 METHOD OF MEASUREMENT. Traffic control devices will be measured based on the Items listed in the Bill of Quantities, which are furnished, accepted and verified by the Engineer. These quantities are deemed the minimum numbers of each device necessary for the handling of construction traffic and shall be the minimum furnished. Should the character or magnitude of the Contractor's operations result in the need for additional devices, the Engineer may order such additional devices. The legends of all Temporary Signs shall be as required by the Traffic Control Plan (TCP), modified based on the proposed character and magnitude of the Contractor's operations. Such modifications shall be submitted to the Engineer for approval prior to ordering the signs. Temporary Signs will be measured by the square meter of sign face for the quantity actually installed and accepted which shall include all required signs, sign posts, installation, maintenance, replacement, relocation, and removal as necessary for the duration of the project. Channelizing Devices on Flexible Supports, (Type), Barricades, Type I or II, Vertical Panels, Plastic Traffic Drums, Traffic Cones and Tubular Markers, Temporary Delineators, Chevrons, Warning Lights Type A, B or C, Flashing Warning Arrow Panels Type A, B or C, Hazard Identification Beacons, Temporary Traffic Signals, Variable Message Signs, Truck Mounted Attenuators and Portable Impact Attenuators will be measured by the unit for the quantities actually installed and accepted which shall include all required devices, supports, installation, maintenance, replacement, relocation and removal as necessary for the duration of the project. Temporary Guardrail and Portable Crashworthy Safety Barrier, Type ___ will be measured by the linear meter along the face of the rail or barrier for the quantities actually installed and accepted, which shall include all required devices, supports, connections, installation, maintenance, replacement, and removal as necessary for the duration of the project. Temporary Pavement Markings will be measured by the linear meter of line placed and accepted of the type(s) specified in the Traffic Control Plan (TCP), including installation, maintenance, replacement, and removal as necessary for the duration of the project. Gaps will not be measured. Pavement markings removal will be measured by the linear meter of line removed. Gaps will not be measured. Temporary Traffic Signal will be measured by the unit for each signal installation required by the Traffic Control Plan (TCP) including the installation, maintenance, replacement and removal as necessary for the duration of the project. The 16
MOC General Specifications - November 1998
installation will include all supports, brackets, controllers, signal heads along with providing the necessary power to operate the signal. Temporary Pavement Markings, Symbols and Letters will be measured by the square meter or by the unit. Temporary retroreflective raised pavement markers will be measured by the unit. Temporary Speed Bumps and Type B Rumble Strips will be measured by the square meter which will also include the removal of these devices after their function has been completed. Flaggers will be measured by the hour for the actual number of hours flagging was performed satisfactorily as ordered by the Engineer. Pilot Car (including operators) will be measured by the hour for the actual number of hours each vehicle was in operation as ordered by the Engineer. Moving crashworthy safety barriers will be measured by the linear meter along the face of the barrier as reinstalled at designated locations that are more than three (3) meters from the point of initial installation. The removal and resetting of portable impact attenuators will be measured by the unit and include all work to reset the attenuator in place even including new foundations, bases and parts lost, damaged or just needed to complete the new installation. The repair of each portable impact attenuator damaged by public traffic through no fault or negligence of the contractor shall be measured at fifty (50) percent of the original bid item if such repair is directed by the Engineer. Items of Work required for the construction of detours including pavement structure layers shown on the plans will be inspected, tested, measured and accepted as separate lots in accordance with the applicable sections of Part 2, "Earthwork," Part 3, "Aggregate Subbase and Base Courses," and Part 4, "Bituminous Construction" in these General Specifications. Traffic control devices used on several detours shall only be measured for payment the first time they are delivered to the project. All traffic control management, supervision, labor, equipment, and materials required explicitly or implicitly to implement the Traffic Control Plan (TCP), including these General Specifications and the Special Specifications, not measured individually will be measured on a lump sum basis under the Traffic Control Management item. Detour Bridge when included in the Bill of Quantities, will include all materials, equipment, construction, labor, maintenance, and incidental items required by the plans and Special Specifications. The square meter measurement for this Work will be all inclusive for the Detour Bridge specified, constructed, maintained, and removed upon completion of the permanent bridge, all to the satisfaction of the Engineer. Detour Aggregate Subbase, Detour Aggregate Base and Detour Bituminous Concrete will be measured by the cubic meter, as placed and compacted to the required density, within the lines, grades and thickness shown on the plans, specified or directed by the engineer. No measurement will be made for overdepth 17
MOC General Specifications - November 1998
on areas of pavement placed outside authorized limits. Separate measurement for prime and tack coats will not be made as they are considered subsidiary to the detour bituminous concrete. 9.02.7 PAYMENT. 9.02.7.1 General. The amount of completed and accepted Work measured as provided above will be paid for at the contract unit prices specified in the Bill of Quantities for the various traffic control devices and detour construction, which prices shall be full compensation for furnishing, installing, maintaining, relocating, replacing and removing as necessary, and other items necessary for the proper completion of the Work as specified in Subsection 1.07.2, "Scope of Payment" in these General Specifications. Unless otherwise stated in the Special Specifications, all temporary traffic control devices shall become the property of the contractor upon the completion of the work. 9.02.7.2 Payment Schedule. All traffic control devices, unless otherwise approved by the Engineer, shall be delivered to the project site prior to payment of the first monthly certificate. 1. Traffic control management lump sum will be paid as follows: (1) Fifty percent (50%) of the lump sum will be paid after all the traffic control devices are installed on the project. (2) Payment on the remaining fifty percent (50%) of the lump sum will be prorated based on the total work completed. 2. Partial payments for all other traffic control devices, including detour aggregate subbase, aggregate base and bituminous concrete, except those measured by the hours, will be paid as follows: (1) Fifty percent (50%) of the bid price will be paid when the item is installed on the project. (2) The remaining fifty percent (50%) of the bid price will be paid upon release of the item from the project by the Engineer. Detour Bridge, when included in the Bill of Quantities, will be paid by the square meter. Seventy-five percent (75%) of the square meter price will be paid upon completion of the Detour Bridge to the satisfaction of the Engineer. The remaining twenty-five percent (25%) of the square meter price will be paid upon removal of the bridge and restoration of the site to the satisfaction of the Engineer. Chevrons will be paid for, based upon its support, with fixed support chevrons being paid under Pay Item No. 90222 and flexible support chevrons being paid under Pay Item No. 9022704. 9.02.7.3 Deductions for Noncompliance. The following deductions from the Contractor's payments will be made by the Engineer whenever deficiencies are uncorrected. Deductions will continue until deficiencies are eliminated. 18
MOC General Specifications - November 1998
Isolated deficiencies in traffic control procedures occur when the Contractor fails to maintain specific signs, replace missing, damaged or destroyed traffic control devices, maintain detours properly, promptly remove pavement markings, or use safety vests. Deduction per calendar day beginning the day after written notice is provided to the Contractor to correct the isolated deficiencies: two thousand Saudi Riyals (SR 2000) for a maximum of ten (10) days. If the isolated deficiencies have not been corrected by the end of the ten (10) day period the Engineer shall issue a "Stop Work" order which will not be rescinded until the deficiencies have been corrected. All deductions shall continue to be assessed until the corrections are made. Chronic deficiencies occur when the Contractor accumulates isolated deficiencies along a single detour within the project or has repeated isolated deficiencies throughout the project. Deduction per calendar day beginning the day after written notice is provided to the Contractor: Five thousand Saudi Riyals (SR 5000) for a maximum of ten (10) days. If the chronic deficiencies have not been corrected by the end of the ten (10) day period the Engineer shall issue a "Stop Work" order which will not be rescinded until the corrections have been made. All deductions will continue to be assessed until the corrections are made. A serious accident or life-threatening condition, such as failure to taper or place a portable impact attenuator at a barrier terminal, or placing unconnected pieces or sections of portable New Jersey or similar concrete barrier, is one within the Contractor's control which the Contractor fails to recognize and correct immediately. Deduction per day beginning on the day written notice is provided to the Contractor: ten thousand Saudi Riyals (SR 10,000) for a maximum of four (4) days. If the serious accident or life threatening condition has not been corrected by the end of the four (4) day period the Engineer shall issue a "Stop Work" order which will not be rescinded until the corrections have been made. All deductions will continue to be assessed until the corrections are made. Deductions will not be made to the contract items for traffic control but will be applied against the total amount earned for the Work accomplished to date. PAYMENT WILL BE MADE UNDER ONE OR MORE OF THE FOLLOWING: ITEM NO
PAY ITEM
PAY UNIT
90201
Traffic Control Management
Lump Sum
90202
Flashing Warning Arrow Panel
Unit
9020201
Flashing Warning Arrow Panel, Type A
Unit
9020202
Flashing Warning Arrow Panel, Type B
Unit
9020203
Flashing Warning Arrow Panel, Type C
Unit
90203
Barricade
Unit
9020301
Barricade, Type 1
Unit
9020302
Barricade, Type II
Unit 19
MOC General Specifications - November 1998
90204
Traffic Cone and Tubular Markers
Unit
90205
Temporary Sign
Square Meter
90206
Plastic Traffic drum
Unit
90207
Flagger
Hour
90208
Pilot Car
Hour
90209
Portable Crashworthy Safety Barrier
Linear Meter
9020901
Portable Crashworthy Safety Barrier, Concrete
Linear Meter
9020902
Portable Crashworthy Safety Barrier, Triton
Linear Meter
9020903
Portable Crashworthy Safety Barrier, (Type),
Linear Meter
90210
Moving Crashworthy Safety Barrier
Linear Meter
90211
Remove and Reset Portable Impact Attenuator
Unit
90212
Temporary Guardrail
Linear Meter
90213
Truck Mounted Attenuator
Unit
90214
Portable Impact Attenuator
Unit
9021401
Portable Impact Attenuator, G.R.E.A.T.
Unit
9021402
Portable Impact Attenuator, ET-2000
Unit
9021403
Portable Impact Attenuator, Sand barrels
Unit
9021404
Portable Impact Attenuator, (type)
Unit
90215
Temporary Pavement Markings
Linear Meter
90216
Temporary Pavement Markings, Symbols and Letters
Square Meter
90217
Temporary Pavement Markings, Symbols and Letters
Unit
90218
Temporary Raised Pavement Markers
Unit
90219
Temporary Rumble Strips, Type B
Square Meter
90220
Temporary Speed Bumps
Square Meter
90221
Vertical Panel
Unit
90222
Chevron
Unit
90223
Warning Light, Type A, B or C
Unit
90224
Hazard Identification Beacon
Unit
90225
Temporary Variable Message Sign
Unit
90226
Temporary Traffic Signal
Unit
90227
Channelizing Device on Flexible Support
Unit
20
MOC General Specifications - November 1998
9022701
Channelizing Device on Flexible Support, Opposing Traffic Lane Divider
Unit
9022702
Channelizing Device on Flexible Support, Construction Object Panel
Unit
9022703
Channelizing Device on Flexible Support, Vertical Panel
Unit
9022704
Channelizing Device on Flexible Support, Chevron Alignment
Unit
9022705
Channelizing Device on Flexible Support, Tubular Channelizer
Unit
90228
Detour Bridge
Square Meter
90229
Aggregate Subbase for Detours
Cubic Meter
90230
Aggregate Base for Detours
Cubic Meter
90231
Bituminous Concrete for Detours
Cubic Meter
21
MOC General Specifications - November 1998
SECTION 9.03 - TRAFFIC MARKINGS 9.03.1 DESCRIPTION. This Work shall consist of furnishing and applying retroreflectorized white and yellow traffic paint lines; thermoplastic retroreflectorized white and yellow traffic paint lines; epoxy thermoplastic retroreflectorized white and yellow traffic paint lines; retroreflectorized painted, thermoplastic retroreflectorized painted and preformed traffic control markings; and retroreflective and ceramic raised pavement markers in accordance with these specifications, at the locations shown on the plans or as directed by the Engineer. The paint and marker application equipment shall be shielded with a Truck Mounted Attenuator (TMA) or shadow vehicle equipped with a TMA. ITEMS IN BILL OF QUANTITIES White Traffic Lines Yellow Traffic Lines Traffic Control Markings Retroreflective Raised Pavement Markers Ceramic Raised Pavement Markers 9.03.2 MATERIALS. 9.03.2.1 Retroreflectorized Traffic Lines. Retroreflectorized paint shall consist of a ready-mixture of binder, white or yellow pigment, and filler specifically compounded for application and adhesion to finished paved areas. The paint shall be retroreflectorized by adding retroreflective glass spheres before the paint film dries or sets, using drop-on or pressurized methods. Retroreflectorized white and yellow lines shall be produced from paint conforming to the requirements of AASHTO M 248, Type F. The surface application glass spheres shall conform to the requirements of AASHTO M 247, Type I. 9.03.2.2 Retroreflectorized Thermoplastic Traffic Lines. Retroreflectorized thermoplastic lines shall consist of a mixture of binder, white or yellow pigment, glass spheres, filler, and other materials in granular form such as light colored silica sand or quartz specifically compounded for traffic paint that is to be applied to the pavement in a molten state by mechanical means with surface application of glass beads. Upon cooling to normal pavement temperature, this material shall produce an adherent retroreflectorized paint line of specified thickness capable of resisting deformation by traffic. The minimum softening point of the material shall exceed ninety-two degrees Celsius (92 o C). White and yellow thermoplastic paint shall conform to the requirements of AASHTO M 249 except that the titanium dioxide content shall be ten percent (10%) maximum as listed in Table 9.03-1.
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MOC General Specifications - November 1998
TABLE 9.03-1 COMPOSITION COMPONENT
WHITE
YELLOW
18.0 min
18.0 min
30-40
30-40
Titanium dioxide
10.0 min
-----
Calcium carbonate & inert fillers
42.0 max
See Note
-----
See Note
Binder Glass beads
Yellow pigments
NOTE: Amount of yellow pigment, calcium carbonate and inert fillers shall be at the option of the manufacturer, providing all other requirements of this specification are met. Surface application glass spheres shall conform to the requirements of AASHTO M 247, Type I, except the gradation shall conform to the following: Standard Sieve SizePercent Passing by Weight 1.70 mm (No. 12)100 0.600 mm (No. 30)85-100 0.425 mm (No. 40)45-100 0.300 mm (No. 50)10-45 0.180 mm (No. 80) 0-20 0.150 mm (No. 100) 0-5 Pre-mix glass spheres shall conform to the following requirements: 1. Crushing Resistance. The chemical composition when tested in accordance with the soda lime glass test - BS 6088 - 1981 shall yield a minimum one and five-tenths (1.5) Refractive Index. 2. Roundness. A minimum of seventy-five percent (75%) shall be true spheres when tested in accordance with ASTM D 1155. Not less than seventy percent (70%) of the spheres of each sieve size shall be free from imperfections of all types, including film, scratches, pits, clusters and opaqueness. 3. Index of Refraction. The spheres mixed into the material shall have a minimum index of refraction of not less than one and fifty hundredths (1.50) when tested by the liquid immersion method at twenty-five degrees Celsius (25 o C), and the spheres automatically applied to the surface of the stripe shall have a minimum index of refraction of not less than one and five tenths (1.5) when tested by the liquid immersion method at twenty-five degrees Celsius (25 o C). 4. Gradation. When tested in accordance with ASTM D 1214, the beads used in the thermoplastic material compounding shall conform to the following gradation: Standard Sieve SizePercent Passing by Weight 23
MOC General Specifications - November 1998
1.70 mm (No. 12)100 0.180 mm (No. 80) 0-5 5. Chemical Resistance. The glass spheres shall withstand immersion in water and acids without undergoing noticeable corrosion or etching, and shall not be darkened or otherwise noticeably decomposed by sulfides. The tests for chemical resistance shall consist of one (1) hour immersion in water and in corrosive agents followed by microscopic examination. A three (3) to five (5) gram sample shall be placed in each of three (3) glass beakers or porcelain dishes and one (1) covered with distilled water, one (1) with a three (3) N solution of sulfuric acid and the last with a solution of fifty percent (50%) sodium sulfide, forty-eight percent (48%) distilled water, and two percent (2%) Aerosol 1B or similar wetting agent. At the end of the one (1) hour immersion, no darkening, hazing or other evidence of instability shall be noticeable when examined microscopically. 6. Silica Content. The silica content (Si O2) of the spheres shall be sixty percent (60%) plus or minus five percent (5%) when tested in accordance with U.S. Federal Test Method 141a. 9.03.2.3 Retroreflectorized Epoxy Thermoplastic Traffic Lines (ETP Lines). 9.03.2.3.1 General. ETP lines shall consist of a formulation of two (2) epoxy resins: one solid, one liquid in a sixty (60) to forty (40) ratio by weight; calcium carbonate and inert fillers, glass beads, and either titanium dioxide pigment for the white formulation or silica encapsulated lead chromate pigment for the yellow formulation. 9.03.2.3.2 Epoxy Resins. The liquid and solid resins shall be condensation products of bisphenol A and epichlorohydrin having the properties listed in Table 9.03-2. TABLE 9.03-2 Liquid Epoxy Resin Average Difference* Viscosity, cps 48 degrees C, 20 RPM 232 degrees C, 10 RPM Epoxide Equiv. (gm./equiv.)
Solid Epoxy Resin Average Difference*
680-810
10
-
-
-
-
1300-2600
75
180-196
10
1600-2300
50
Wt.
*Between two replicates. 9.03.2.3.3 Titanium Dioxide. The titanium dioxide shall conform to ASTM D 476, Type II. The oil absorption shall be between thirteen (13) and thirty (30) grams oil per one hundred (100) grams pigment, with a maximum deviation between replicate samples of one (1.0). 24
MOC General Specifications - November 1998
9.03.2.3.4 Calcium Carbonate. The calcium carbonate shall conform to ASTM D 1199, Type GC, Grade I, with a dry brightness no less than ninety-one percent (91%). The oil absorption shall be between nine (9) and twenty-one (21) grams oil per one hundred (100) grams pigment, with a maximum deviation between replicate samples of one (1.0). 9.03.2.3.5 Lead Chromate. The lead chromate shall be refractory type, silica encapsulated, and with no additive surface treatment. When tested in accordance with ASTM D 1208 for determining the pH using two and five tenths (2.5) grams of pigment in fifty (50) millimeters water and ASTM D 153 for determining the specific gravity of the pigment and ASTM D 444 for determining the lead chromate shall have the properties listed in Table 9.03-3. TABLE 9.03 - 3
Minimum
Maximum
Maximum Deviation Between Replicates
pH in 5 degrees water-slurry
7.0
9.0
0.2
Specific gravity
3.8
4.5
0.01
Lead, percent by weight
44
50
0.5
Chromate (CrO4), percent by weight
17
27
0.6
Chromium (CR), percent by weight
7.6
12.1
0.5
9.03.2.3.6 Glass Beads. The glass beads shall conform to ASTM D 2205, Type I, except that the gradation when tested in accordance with ASTM D 1214 shall be as follows: Standard Sieve SizePercent Passing by Weight 0.85 mm (No. 20) 100 0.60 mm (No. 30)79-100 0.30 mm (No. 50)15-60 0.18 mm (No. 80) 0-15 9.03.2.4 Retroreflectorized Traffic Control Markings, Retroreflectorized Thermoplastic Traffic Control Markings and Retroreflectorized Epoxy Thermoplastic Traffic Control Markings. Materials shall conform to the requirements for Retroreflectorized Traffic Lines and Retroflectorized Thermoplastic Traffic Lines and Retroreflectorized Epoxy Thermoplastic Traffic Lines, respectively, as cited above. 9.03.2.5 Retroreflective Raised Pavement Markers.
25
MOC General Specifications - November 1998
9.03.2.5.1 General. All Retroreflective Raised Pavement Markers used in the Kingdom shall be prequalified products, approved by the Ministry based on these General Specifications and successful trial usage under extreme conditions. They shall be applied in accordance with the M.O.C. Road Services Department standard marking details for Raised Pavement Markers (RPM). Color indications of Retroreflective Raised Pavement Markers shall be as shown on the plans or ordered by the Engineer. Colormetric characteristics will be accepted based on comparison with MOC standards. If there are doubts as to acceptability, characteristics will be tested by the Ministry and approved based on standard required trichromatic coordinates tested in accordance with ASTM E 308. 9.03.2.5.2 Type A Markers (Large Cateye Road Studs). Type A markers shall consist of a mountable aluminum alloy (LM6 or LM24) casting approximately one hundred fifty (150) millimeters by one hundred fifty (150) millimeters and twenty three (23) millimeters high. The stud anchor shall be aluminum, approximately six (6) centimeters long and two and five tenths (2.5) centimeters in diameter. The stud shall be deformed or slotted to resist pullout and rotational displacement. The Type A markers shall withstand a tensile stress of between two hundred seventy five and two hundred eighty five (275-285) N/mm2 with a Brinell Hardness of between fifty five and sixty (55-60). Each marker shall have one (1) or two (2) retroreflecting faces as ordered. Each retroreflecting surface shall have four (4) fifteen (15) millimeter diameter discs of seven (7) bi-convex lenses or one stimsonite prismatic face totalling twenty one (21) square centimeters in area. Each retroreflecting surface shall meet the minimum reflectance requirements of Table 9.03-4.
26
MOC General Specifications - November 1998
TABLE 9.03-4 Retroreflectance Requirements for Types A and B Retroreflective Raised Pavement Markers Minimum Coefficient of (Retroreflected) Luminous Intensity (RI)
Candelas per footcandle (Millicandelas per lux)
Observation Angle ° (rad)
Entrance Angle ° (rad)
White (a)
Amber
Red
0.2 (0.003)
0 (0)
3.0 (279)
1.8 (167)
0.75 (70)
0.2 (0.003)
20 (0.35)
1.2 (112)
0.72 (67)
0.30 (28)
(a)
Crystal, clear, or colorless are acceptable color designations.
Notes: 1Observation angle shall mean the angle at the retroreflector between the observer's line of sight and the axis of the incident light beam. 2Entrance angle shall mean the angle at the retroreflector between the direction of light incident on it and the direction of the retroreflector axis. 9.03.2.5.3 Type B Markers (Small Cateye Road Studs). Type B markers shall consist of an impact-resistant, smooth, pressure-molded mountable aluminum alloy casting approximately one hundred fifteen (115) millimeters by one hundred fifteen (115) millimeters and twenty three (23) millimeters high. The slope of the retroreflecting face shall be thirty (30) degrees. The stud anchor shall be aluminum, a minimum of six (6) centimeters long and three two and five tenths (2.5) centimeters in diameter. The stud shall be deformed or slotted to resist pullout and rotational displacement. The Type B markers shall withstand a tensile stress of between two hundred seventy five and two hundred eighty five (275-285) N/mm2 with a Brinell hardness of between fifty five and sixty (55-60). Each marker shall have one (1) or two (2) retroreflecting faces as ordered. Each reflecting face shall have three (3) 15 millimeter diameter discs of seven (7) biconvex lenses or one stimsonite prismatic face totaling twenty one (21) square centimeters in area. Each retroreflecting face shall meet the minimum retroreflectance requirements of Table 9.03-4. 9.03.2.5.4 Type C Markers (Plain Prismatic Retroreflectors). Type C markers shall consist of a methyl methacrylate or suitably compounded acrylonitrile butadiene styrene (ABS) shell filled with a mixture of an inert thermosetting compound and filler material approximately ten (10) centimeters by ten (10) centimeters. The exterior surface of the shell shall be smooth and contain one (1) or two (2) methyl methacrylate prismatic retroreflector faces as required. The retroreflective lens shall not contain any voids or air space and the back of the lens shall be metalized. The shell shall be fabricated in a manner that will provide a mechanical interlock between the thermosetting compound and the shell. The thermosetting compound shall bond directly to the backside of the metalized lens surface. The base of the marker shall not deviate from a flat surface by more than 27
MOC General Specifications - November 1998
two (2) millimeters, shall be rough textured, and free from gloss or substances which may reduce its bond to the adhesive. The retroreflective markers shall withstand a load of one thousand (1000) kilograms. Such test load shall be applied at the center of the marker by a two and five tenths (2.5) centimeter diameter solid cylinder while the marker is supported on a seven and five tenths (7.5) centimeter inside diameter hollow cylinder. Type C markers shall meet the minimum retroreflectance requirements of Table 9.03-5. TABLE 9.03-5 RETROREFLECTANCE REQUIREMENTS FOR TYPE C Retroreflective RAISED PAVEMENT MARKERS Minimum Coefficient of Luminous Intensity (RI) Milli Candelas per Lux) Clear or Red White Amber Observation Angle 1
Entrance Angle2
0.22G
0G
280
70
170
0.22G
22G
110
28
67
Notes: 1Observation angle shall mean the angle at the retroreflector between the observer's line of sight and the axis of the incident light beam. 2Entrance angle shall mean the angle at the retroreflector between the direction of light incident on it and the direction of the retroreflector axis. 9.03.2.6 Ceramic Raised Pavement Markers. 9.03.2.6.1 General. Ceramic raised pavement markers shall consist of a heat-fired, vitreous, ceramic base, and a heat-fired, opaque, glazed surface to produce the properties required in these specifications. The markers shall be produced from any suitable combination of intimately mixed clays, shales, talcs, flints, feldspars, or other inorganic material which will meet the properties herein required. The markers shall be thoroughly and evenly marked and free from defects which effect appearance or serviceability. The bottoms of the ceramic markers shall be free from gloss or glaze and shall have a number of integrally formed protrusions (comparable to a fine grained sandpaper) projecting from the surface in a uniform pattern of parallel rows. The tips of the protrusions shall not deviate more than one and three tenths (1.3) millimeters from a flat surface. Each protrusion shall have a face parallel to the bottom of the marker. To facilitate forming and mold release, the sides of each protrusion may be tapered. This taper shall not exceed seventeen (17) grads from perpendicular to the marker bottom. 28
MOC General Specifications - November 1998
9.03.2.6.2 Finish. The top surface of the marker shall be convex and the radius of curvature shall be between nine (9) and fifteen (15) centimeters except that the radius of the centimeter nearest the edge may be less. Any change in curvature shall be gradual. The top and sides shall be smooth and free of mold marks, pits, indentations, air bubbles, or other objectionable marks or discolorations. 9.03.2.6.3 Physical Requirements. -
Glaze Thickness Height (Total) Height (Lip) Hardness Diameter
0.18 mm minimum 19 +/- 2 mm 4.0 to 8 mm (Moh) 6 minimum 101 +/- 2 mm
- Directional retroreflectance (white markers only) Glazed surface Body of marker
75 minimum 65 minimum
- Yellowness index (white markers only) Glazed surface Body of marker
7 maximum 12 maximum
- Color (yellow markers only) Purity Dominant wave length Total luminous retroreflectance (Y value X 100)
76% to 96% 0.579 to 0.585 mm 41 minimum
- Autoclave resistance (ASTM C 424)
Glaze shall not spall, craze, or peel
- Strength
680 Kilograms minimum
- Water absorption (ASTM C-373)
2.0% maximum
9.3.2.7
Adhesive. The retroreflective and ceramic raised pavement markers shall be secured by a bituminous compound for use in high temperature climates. The bituminous compound shall be selected and used in accordance with the manufacturer's recommendations. Only bituminous adhesive, consisting of an asphaltic material with a homogeneously mixed mineral filler, shall be used on new bituminous wearing surfaces. The adhesive shall be suitable for application when the road surface and marker temperatures are in the range of four to seventy degrees Celsius (4° to 70° C). The adhesive properties shall not deteriorate when heated to and applied at temperatures up to two hundred twenty degrees Celsius (220° C), using either air or oil jacketed melters. The material shall not contain rubber 29
MOC General Specifications - November 1998
polymers, since the necessary application temperatures may cause decomposition. Adhesive asphalt and filler properties shall be the manufacturer’s standard for the intended purpose and environment and subject to the Engineer’s approval. On stiffer (seasoned) pavements, epoxy adhesives may be used if so recommended by the marker manufacturer and approved by the Engineer. Two (2) component epoxy resin adhesive, conforming to AASHTO M237, Class I shall be applicable. In either case bituminous or epoxy adhesive, only materials recommended by the marker manufacturer shall be used. 9.03.3 EQUIPMENT. 9.03.3.1 General. The applicating equipment to be used on roadway installations shall consist of either truck-mounted units, motorized ride-on equipment, or manually pushed equipment, depending on the type of lines or markings required. The truck-mounted or motorized ride-on units for centerlines, lane lines, and edgelines shall consist of a mobile self-contained unit carrying its own material capable of operating at a minimum speed of eight (8) kilometers per hour while applying paint. The hand applicator equipment shall be sufficiently maneuverable to install centerlines, lane lines, edge lines, gore striping, turn lines, crosswalks, stop bars, arrows, and legends. Spray equipment shall be capable of satisfactorily applying the paint under pressure with a uniformity of feed through nozzles spraying directly upon the pavement. Each paint tank shall be equipped with satisfactory cut-off valves which apply broken or skip lines automatically. Each nozzle shall have a mechanical bead dispenser that will operate simultaneously with the spray nozzle and distribute the beads in a uniform pattern at the rate specified. Each nozzle also be equipped with suitable line guides consisting of metallic shrouds or air blasts. The machine shall provide a method for cleaning the surface of dust just prior to paint placement. The applicating equipment shall be mobile and maneuverable to the extent that straight lines can be followed and normal curves can be made in a true arc. The equipment operator shall be located in such a position as to enable full visibility of the striping apparatus. 9.03.3.2 Retroreflectorized Traffic Lines and Markings Application Equipment. The spray machine shall have an attachment that will permit accurate regulation of the rate of application and a tachometer or other approved device to insure uniform paint application at the designated rate. It shall be adjustable for applying one (1) or two (2) adjacent lines simultaneously along the centerline as may be required. The operation of the unit shall be such that paint will not be spattered or blown on another stripe. The unit shall be so designed that the paint will be properly agitated while in operation. 9.03.3.3 Retroreflectorized Thermoplastic Traffic Lines and Markings Application Equipment. The application equipment shall be especially designed for placing the plastic material in a hot molten state on the pavement, utilizing either an extrusion or spray method. Equipment shall have the capability of providing continuous mixing and agitation of the material while maintaining the material at the 30
MOC General Specifications - November 1998
proper placement temperature in a continuous stripe of uniform thickness and width. The use of direct flame heat will not be allowed in any heating operation. A glass sphere top dressing shall be applied to the completed thermoplastic stripe by an automatic glass sphere dispenser attached to the stripping machine in such a manner that the spheres are applied to the molten thermoplastic material immediately after it has been applied. The sphere dispenser shall utilize pressure type spray guns which will embed the spheres into the stripe surface to at least onehalf (1/2) the sphere diameter. The sphere dispenser shall be equipped with an automatic cut-off synchronized with the cut-off of the thermoplastic material. Hand equipment shall be permitted only for markings, including arrows, crosswalks, stop bars, symbols, and legends, and have sufficient capacity to hold seven hundred (700) kilograms of molten material and be as maneuverable as required. 9.03.3.4 Retroreflectorized Epoxy Thermoplastic Traffic Lines and Markings Application Equipment. 9.03.3.4.1 General. The equipment shall be constructed to provide continuous mixing, agitation, and indirect oil jacketed heating of the material. The equipment shall be designed to apply ETP marking material and retroreflective glass spheres in continuous and skip line patterns. 9.03.3.4.2 Pressure Tank. The equipment shall be equipped with a pressure tank, mixer(s), and heating equipment of such capacity to maintain the ETP at a minimum temperature of two hundred twenty-five degrees Celsius (225 o C). The heating equipment shall surround the pressure tank and consist of a direct thermostatically controlled heat transfer system medium. Heating by direct flame shall not be allowed. 9.03.3.4.3 Spray System. The equipment shall be equipped with a low pressure spray system. Atomizing air may be used provided it is heated to a minimum of one hundred seventy-five degrees (175 o C). All spray lines and appurtenances leading from the heated pressure tank to the spray nozzle shall be fully insulated or suitably heated so as to allow heated ETP material to leave the spray gun at a minimum temperature of two hundred twenty-five degrees Celsius (225o C). 9.03.3.5 Retroreflective and Ceramic Raised Pavement Marker Application Equipment. If epoxy or bituminous adhesive is to be hand-mixed, all containers and stripping devices shall be clean before mixing is begun. Epoxy or bituminous adhesive automatic mixing equipment shall be maintained in a sound mechanical condition, and the mixing head shall be cleaned whenever the steady progress of the Work is halted for any extended period of time. The allowable delays shall be consistent with the pot life of the epoxy or bituminous adhesive system being used. Automatic mixing devices shall be equipped in such a manner that the separate components are delivered to the mixing head at the specified ratio by volume. The lines feeding the mixing head shall be equipped with suitable valves that will allow samples to be taken for checking the ratio of each component. The machine shall
31
MOC General Specifications - November 1998
be capable of metering the amount of adhesive required to affix each marker to the pavement. 9.03.4 CONSTRUCTION. 9.03.4.1 General. The portion of the highway surface to which the lines, markings, or markers are to be attached shall be dry and free of dirt, existing paint lines, curing compound, grease, oil, moisture, loose or unsound layers, and any other material which would adversely affect the bond. The areas shall be thoroughly clean, using whatever equipment is necessary to clean the pavement thoroughly without damaging the surface, taking particular care to remove all vegetation, loose soil, and other foreign substances from areas where edge stripping is to be applied. Where necessary, the surface shall be wet with a water jet and scrubbed to dislodge all foreign material. After washing, the surface shall be allowed to dry thoroughly and any film of dried mud apparent after surface drying shall be removed before application of paint. Lines, markings, or markers shall be applied as closely as practicable after the surface has been cleaned and dried and the Engineer has given the approval to proceed. Costs for cleaning the surface and removing existing paint lines shall be included in the contract unit prices of the traffic lines, markings, and markers pay items. The Engineer will not give his permission to proceed when (1) there is any moisture on the pavement surface or the air is misty, (2) the surface temperature of the pavement is below ten degrees Celsius (10 degrees C), (3) wind or other conditions cause a film of dust to be deposited on the surface after cleaning and before installation, or (4) other conditions exist that, in the opinion of the Engineer, would displace, damage, or affect the bonding of the material to the pavement surface. Any installation placed in violation of the above conditions, or damaged due to water or rain within fifteen (15) minutes after application, shall be removed and replaced without additional compensation. For temporary striping, the weather conditions noted above may be waived at the Engineer's discretion to expedite installation and assure the safety of traffic handling. Prior to striping two-way roadways, the Contractor shall conduct a detailed survey of the roadway to identify the limits of no-passing zones in accordance with the requirements of the M.U.T.C.D. Such zones shall be clearly marked for the striping crew. A report of the survey shall be submitted to the Engineer for approval at least two (2) weeks prior to scheduled striping. No centerline striping shall proceed until the Engineer approves the no-passing zones or modifies them as applicable. All lines, markings, and markers shall be placed in accordance with the requirements of these General Specifications, the detailed plans, the Special Specifications and the M.O.C. Standard Markings Manual (TS-03). The centerline lines of the width shown on the plans shall be of six (6) meter length, with a twelve (12) meter space between line segments, or as otherwise noted on the plans or directed by the Engineer. No-passing lines shall be solid white of the width shown on the plans, located as directed by the Engineer. Intersection markings, special pavement markings, and obstruction hazard zone 32
MOC General Specifications - November 1998
markings shall be as shown on the plans and/or as directed by the Engineer. Edge lines, markings and markers shall not be applied prior to completion of shoulders. The Contractor shall mark the control points necessary for the placing of the new lines, markings, and markers based on surveyed controls or other controls approved by the Engineer. On irregular sections of roadway, the location of edge striping shall be adjusted so as to fall continuously and uniformly on the pavement. 9.03.4.2 Application. All traffic line and marker application equipment shall be shielded with a Truck Mounted Attenuator (TMA) or a shadow vehicle equipped with a TMA. The Contractor shall demonstrate the capability of his equipment and operators to produce acceptable lines and markings through the successful completion of a preapplication test. The preapplication test shall be performed on roadway surfaces other than those to receive the application to be paid for under the Bill of Quantities Item(s). It shall include verification of the placement of lines and markings of acceptable width, thickness and workmanship. 9.03.4.2.1 Retroreflectorized Traffic Lines and Markings. When the roadway is open to traffic, painting shall be done only during daylight hours, and all painted areas shall be dry enough, before sunset, to permit crossing by traffic without tracking. All protective devices shall be removed no later than sunset to allow free movement of traffic at night. Traffic paint shall be thoroughly mixed in the shipping container before placing in the machine tank. The paint machine tanks, connections, and spray nozzles shall be thoroughly cleaned with thinner before starting each day's Work. The minimum wet film thickness for all painted areas shall be four tenths (0.4) millimeter (unbeaded). The rate of application for ten (10) centimeter width paint lines shall be approved by the Engineer subject to the following minimums: Solid Traffic Paint Lines: Rate of Application
- forty (40) liters per kilometer minimum (smooth surface) - fifty (50) liters per kilometer minimum (rough surface)
Skip Traffic Paint Lines
- six (6) meter line - twelve (12) meter gap
Rate of Application
- fourteen and five tenths (14.5) liters per kilometer minimum
Minimum rates shall be modified proportionately for varying widths and lengths of stripes. The measured application rate shall not vary from the approved rate by more than five percent (5%) in any kilometer. At any point where a check indicates a variation in excess of five percent (5%), the Work shall be stopped and the equipment adjusted or replaced. Identifiable areas of deficiency shall be corrected. 33
MOC General Specifications - November 1998
Immediately following the application of the paint, a uniform application of glass beads shall be applied at a rate of six tenths (0.6) to seven tenths (0.7) kilogram per liter of paint. 9.03.4.2.2 Retroreflectorized Thermoplastic Traffic Lines and Markings. If required by the Engineer, in addition to or in lieu of the pavement cleaning requirements contained in Paragraph 9.02.4.1 "General" in these General Specifications , the surface of new and existing asphalt concrete pavement shall be washed with detergent solution followed by a water rinse to remove any clay coating or accumulation of grease. On new and existing Portland cement concrete, the surface shall be abrasive blast cleaned to remove laitance, curing seal, or other foreign material. The Contractor shall apply a binder-sealer material prior to the actual thermoplastic installation on Portland Cement Concrete Pavement (PCCP). The binder-sealer material shall form, when applied with conventional mobile paint spraying equipment, a continuous film over the pavement surface which will dry rapidly and adhere to the pavement surface. The binder-sealer shall be dry before the thermoplastic materials are applied. The binder-sealer shall be a product currently used and recommended by the thermoplastic material manufacturer. To insure optimum adhesion, the thermoplastic material shall be installed in a molten state when the pavement and air temperatures are above ten degrees Celsius (10oC.) at temperatures between two hundred and two hundred twenty degrees Celsius (200-220oC). Thermoplastic material shall not be applied to a new bituminous concrete pavement before it has been exposed to at least fourteen (14) days of use. The computed (measured volume of material applied divided by the measured area of application) thickness in any section of sprayed thermoplastic lines shall be not less than two (2) millimeters. The computed overall average thickness of extruded thermoplastic lines shall be not less than three and five tenths (3.5) millimeters. The computed overall average thickness of the sprayed thermoplastic markings shall be not less than three (3) millimeters. The completed stripes shall have the specified cross section, shall be continuous and uniform in shape, and shall have clean and sharp dimensions. The width of paint line specified shall be applied to the completed thermoplastic paint by an automatic glass sphere dispenser attached to the striping machine in such a manner that the spheres are applied to the molten thermoplastic material immediately after it has been placed. The sphere dispenser shall utilize pressure type spray guns which will embed the spheres into the stripe surface to at least onehalf (1/2) the diameter at the rate not less than six-tenths (0.6) kilogram per square meter. The sphere dispenser shall be equipped with an automatic cut-off synchronized with the cut-off of the thermoplastic material. 9.03.4.2.3 Retroreflectorized Epoxy Thermoplastic Traffic Lines. The above requirements for the retroreflectorized spray thermoplastic traffic lines and markings shall apply to ETP, except that ETP shall be heated and sprayed at material temperatures between two hundred twenty-five and two hundred thirty-five 34
MOC General Specifications - November 1998
degrees Celsius (225-235o C.) at the spray nozzle. ETP lines shall be applied at a thickness of forty-five hundredths (0.45) millimeter with a tolerance of plus or minus five hundredths (0.05) millimeter. No binder-sealer material is required prior to epoxy thermoplastic application on clean bituminous concrete pavement surfaces. 9.03.4.2.4 Retroreflective and Ceramic Raised Pavement Markers. In lieu of the pavement cleaning requirements contained in Paragraph 9.03.4.1, "General" in these General Specifications, the pavement surface to which retroreflective and ceramic raised pavement markers are to be placed shall be thoroughly blast cleaned to remove all materials which could adversely affect the bond of the adhesive. For road stud markers, the hole for the stud shall be drilled slightly wider and deeper than the stud. All debris from the hole shall be removed and any damage to the pavement surface around the hole shall be repaired before installation of the marker. The stud hole shall be completely filled with adhesive. The adhesive shall be placed uniformly on the cleaned pavement surface or on the bottom of the marker in a quantity sufficient to result in complete coverage of the area of contact of the marker and the pavement, with no voids present and with a slight excess after the marker has been pressed in place. The marker shall be placed in position and pressure applied until firm contact is made with the pavement. Excess adhesive around the edge of the marker, excessive adhesive on the pavement, and adhesive on the exposed surfaces of the marker shall be immediately removed. Kerosene or other approved solvent shall be used to remove excess adhesive such that the pavement is not damaged. The marker shall be protected against impact until the adhesive has hardened. Mixing of adhesive shall be performed in limited quantities such that the markers shall be aligned and pressed in place within five (5) minutes after mixing the adhesive components. Any mixed batch of adhesion which becomes so viscous that the adhesive is not readily extruded from under the marker on application of slight pressure shall not be used. All markers shall be placed to the lines shown on the plans or established by the Engineer. The Contractor shall mark the location where each marker is to be placed and the marks shall be approved by the Engineer prior to beginning mixing operations. Retroreflective raised pavement markers shall be placed in such a manner that the axis of the marker is parallel to the roadway centerline. No pavement markers shall be placed over longitudinal or transverse joints of the pavement surface. 9.03.4.3 Protection of Traffic Lines, Markings and Markers. Immediately following the application of the paint lines and markings in areas under public traffic, traffic cones or other approved devices shall be placed alongside or over the line at intervals not exceeding fifteen (15) meters, to remain in place until the line has dried to such an extent that it will not be damaged by the tires of vehicles. Traffic shall be prevented from crossing a wet traffic paint line and the Contractor shall use a sufficient number of flaggers, barricades, or other protection for the wet line, particularly at crossings, to prevent traffic from crossing the wet line. Sections of traffic paint line which have been marred by traffic crossing them before they have 35
MOC General Specifications - November 1998
cured shall be repaired by the Contractor and the pavement cleaned outside the line without additional compensation. Raised markers shall be protected from all traffic for at least three (3) hours after placement, when the average ambient temperature is thirteen degrees Celsius (13 o C) or above; at least twenty-four (24) hours when said temperature is between four degrees Celsius and thirteen degrees Celsius (4 to 13 o C); and at least forty-eight (48) hours when said temperature is four degrees Celsius (4 o C) or below. The Engineer will determine when the adhesive has set sufficiently to bear traffic. Regardless of the type of adhesive used, markers shall not be placed under any of the following conditions: 1. The pavement or air temperature is zero degrees Celsius (0 o C) or below; 2. The relative humidity of the air is greater than eighty percent (80%); 3. The pavement is not surface dry; 4. Before a new bituminous concrete pavement has been exposed to at least fourteen (14) days of use. Temporary barricades of the design shown in the plans, or as otherwise designated, together with the signs shown for use therewith, shall be placed as shown with reference to the pavement edges at the beginning and end of the section which the Contractor proposes to work in one operation. As soon as Work is complete in one section, the temporary barricades and cones shall be moved ahead to the next section. No barricades or cones shall be left overnight. The equipment shall be so operated that it will be unnecessary for public traffic to cross the newly placed material behind the equipment in order to safely pass the equipment. All protective and warning traffic control devices shall be in accordance with the Ministry's Manual on Uniform Traffic Control Devices (M.U.T.C.D.). 9.03.4.4 Surface Tolerances and Appearance. A tolerance of twelve (12) millimeters over, or three (3) millimeters under, the specified line width shall be allowed, provided the variation is gradual and does not detract from the general appearance of the line. Segments of broken line may vary up to thirty (30) centimeters from the specified length. Segments shall be square at each end and without mist or distortion. Deviations form the control line of up to twenty-five (25) millimeters on tangents and fifty (50) millimeters on curves will be applied, provided the deviation does not increase or decrease at a rate of more than fifteen (15) millimeters in ten (10) meters. Lines that do not meet these tolerances shall be removed and replaced without additional compensation. In all instances, when it is necessary to remove paint, it shall be done by means satisfactory to the Engineer, which will not damage the underlying surface of the pavement. When necessary to correct a deviation which exceeds the permissible tolerance in alignment, that portion of the stripe so affected shall be removed plus an additional five (5) meters in each direction, and a new stripe then painted in accordance with these specifications. 9.03.5 SAMPLING AND TESTING. All materials shall be shipped to the job site in undamaged, sealed original packaging, clearly identifying each material as to name, color, manufacturer, batch 36
MOC General Specifications - November 1998
number, and date of manufacture. All materials shall be accompanied by certified test results verifying compliance with all physical and chemical requirements of these specifications. Retroreflective raised pavement markers shall be tested for retroreflectance at the minimum rate of one (1) retroreflector tested per five hundred (500) shipped. All paint products and other materials designated by the Engineer shall be sampled for testing. Sampling shall be performed by the Contractor in the presence of the Engineer. Materials shall be sampled in their original containers, except that bulk shipments may be sampled and resealed as approved by the Engineer. All samples shall be packaged for shipment as approved by the Engineer. Samples shall be transported to the Ministry's Central Laboratory, or an approved independent laboratory as designated by the Engineer. No materials shall be used until approved by the Ministry. The Contractor shall be responsible for the cost of all testing including those tests designated by the Engineer to be performed at an independent laboratory. 9.03.6 METHOD OF MEASUREMENT. Traffic Lines and Traffic Control Markings shall be measured by the square meter based on the dimensions shown on the plans or ordered by the Engineer for all areas of each type authorized, completed and accepted by the Engineer. Retroreflective and Ceramic Raised Pavement Markers shall be measured by the unit based on the number required by the plans or ordered by the Engineer for each type of markers of each authorized, completed and accepted by the Engineer. 9.03.7 PAYMENT. The amount of authorized, completed, and accepted Work, as measured above, will be paid at the contract unit prices in the Bill of Quantities, which price shall include all required materials, equipment, tools, labor, and all other items necessary for the proper completion of the Work as specified in Subsection 1.07.2, "Scope of Payment" in these General Specifications. PAYMENT WILL BE MADE UNDER ONE OR MORE OF THE FOLLOWING: ITEM NO
PAY ITEM
PAY UNIT
90301
Reflectorized Traffic Lines
Square Meter
9030101
Reflectorized White Traffic Lines
Square Meter
9030102
Reflectorized Yellow Traffic Lines
Square Meter
90302
Reflectorized Traffic Control Markings
Square Meter
90303
Retroreflectorized Thermoplastic Traffic Lines
Square Meter
9030301
Retroreflectorized Thermoplastic White Traffic Lines
Square Meter
37
MOC General Specifications - November 1998
9030302
Retroreflectorized Thermoplastic Yellow Traffic Lines
Square Meter
90304
Retroreflectorized Thermoplastic Traffic Control Markings
Square Meter
90305
Retroreflectorized Epoxy Thermoplastic Traffic Lines
Square Meter
9030501
Retroreflectorized Epoxy Thermoplastic White Traffic Lines
Square Meter
9030502
Retroreflectorized Epoxy Thermoplastic Yellow Traffic Lines
Square Meter
90306
Retroreflectorized Epoxy Thermoplastic Traffic Control Markings
Square Meter
90307
Retroreflective Raised Pavement Markers
Unit
9030701
Retroreflective Raised Pavement Markers, Type A
Unit
9030702
Retroreflective Raised Pavement Markers, Type B
Unit
9030703
Retroreflective Raised Pavement Markers, Type C
Unit
90308
Ceramic Raised Pavement Markers
Unit
SECTION 9.04 - RUMBLE STRIPS AND SPEED BUMPS 9.04.1 DESCRIPTION AND APPLICATION. This Work shall consist of the construction of Speed Bumps, Rumble Strips, and Scored Shoulder Rumble Strips at locations shown on the plans, in accordance with the specifications and in conformity with the lines and grades shown on the plans or established by the Engineer. Speed Bumps shall be used only on roadways with a posted speed of sixty-five (65) kilometers per hour. Rumble strips may be used on either low speed or high speed roadways. ITEMS IN BILL OF QUANTITIES Speed Bumps Rumble Strips Scored Shoulder Rumble Strips Milled Shoulder Rumble Strips 9.04.2 MATERIALS. 9.04.2.1 Tack Coat. Bituminous material for tack coat shall be rapid-curing grades RC-70 or as directed by the Engineer, and shall conform to the requirements specified in Section 4.01, "Bituminous Materials" in these General Specifications. 9.04.2.2 Bituminous Mixture. The bituminous mixture for speed bumps shall conform to the requirements specified in Section 4.05, "Bituminous Concrete Pavement" for Bituminous Concrete Wearing Course, Class "C" complete or an equivalent mixture as may be approved by the Engineer. 38
MOC General Specifications - November 1998
9.04.2.3 Concrete. Portland cement concrete for the Type A Rumble Strip shall conform to Subsection 5.03.9, "Concrete for Minor Structures" in these General Specifications. 9.04.2.4 Reinforcing Steel. The steel mesh for the Type A Rumble Strip shall be the size shown on the plans and conform to the requirements specified in Section 5.02, "Reinforcing Steel" in these General Specifications. 9.04.2.5 Ceramic Raised Pavement Markers. The ceramic raised pavement markers for the Type B Rumble Strips shall be the size shown on the plans. The markers shall conform to the requirements of Paragraph 9.03.2.6, "Ceramic Raised Pavement Markers" in these General Specifications. 9.04.2.6 Adhesive. The adhesive used to secure ceramic raised pavement markers shall be bituminous compound for use in high temperatures and conforming to the requirements of the manufacturer. 9.04.2.7 Retroreflective Traffic Paint. The white traffic paint used to distinguish the Speed Bumps shall conform to the requirements of Section 9.03, "Traffic Markings" in these General Specifications for Retroreflectorized Traffic Control Markings.
39
MOC General Specifications - November 1998
9.04.3 CONSTRUCTION REQUIREMENTS. 9.04.3.1 Speed Bumps. 9.04.3.1.1 Surface Preparation. Immediately prior to the application of the tack coat, the bituminous surface shall be cleaned free of all dirt, dust, and other foreign substances which, in the opinion of the Engineer, would prevent proper bonding of the tack coat. Two five hundred (500) +/- fifty (50) millimeters trenches shall be cut transversely across the roadway with a motor grinder to wedge the speed bump into the existing pavement and the beginning end of each speed bump as detailed in Drawing Number TCD-2 in the M.O.C. "Highway Design Manual, Volume 4." 9.04.3.1.2 Application of Tack Coat. Immediately after the surface has been cleaned and approved by the Engineer, the tack coat shall be applied to the area to receive speed bumps. The bituminous material shall be applied by means of an approved pressure distributor, or when approved by the Engineer, by means of approved hand-spraying equipment which achieves a uniform mist type coverage without blotches or streaks. The rate of application shall be approximately two tenths (0.2) to three tenths (0.3) liter per square meter unless otherwise ordered by the Engineer. 9.04.3.1.3 Placing Bituminous Mixture. When the tack coat has set and has been approved by the Engineer, the Contractor shall place a speed bump form conforming to the cross section in Standard Drawing TCD-2 in position. The hot bituminous mixture shall be placed in the forms by approved hand methods and consolidated by approved hand methods and struck flush with the top of the form. 9.04.3.1.4 Compaction of Bituminous Mixture. After the bituminous mixture has been placed in the form and consolidated, the form shall be carefully lifted and removed from the roadway and rolling operations shall be immediately started. Rolling shall be performed with an approved pneumatic roller traveling parallel to the roadway centerline initially and finally perpendicularly to centerline until the speed bump is compacted to uniform cross section. The height of the speed bumps above the pavement surface shall not exceed one hundred (100) millimeters. 9.04.3.2 Type A Rumble Strips. 9.04.3.2.1 Preparation. Type A (Concrete) Rumble Strips shall be installed after the paving has been completed in accordance with the details in M.O.C. Standard Drawing Number TCD-2. Locations of installation shall be staked as shown on the plans or ordered by the Engineer. The pavement structure shall be removed by saw cutting to a minimum depth of two hundred (200) millimeters for a distance along the centerline of one and eight-tenths (1.8) meters. Underlying subgrade or base course material shall be compacted to Type 100 compaction and moistened immediately prior to concrete installation. 9.04.3.2.2 Concrete Rumble Strips. (Type A Concrete) rumble strips shall be placed, vibrated, and screeded in accordance with the requirements of Section 40
MOC General Specifications - November 1998
5.08, "Concrete Pavement" in these General Specifications. Machine placing and finishing will not be required; however, portable screeds shall extend the full one and eight-tenths (1.8) meter width of the installation (parallel to roadway centerline). The installation shall be checked with a full width (parallel to centerline) straightedge before texturing. 9.04.3.2.3 Texturing. Immediately after initial texturing performed in accordance with Paragraph 5.08.4.4, "Placing and Finishing" in these General Specifications. The rumble texture shall be achieved using a template which will produce the size, shape, and pattern of scalloped depressions shown in the M.O.C. Standard Drawing TCD-2. Depression molds may be vibrated or otherwise forced into the surface of the fresh concrete. The template shall form uniform depressions twenty (20) to thirty (30) millimeters deep and seventy-five (75) millimeters between peaks. Molds shall be designed to be withdrawn without damaging the edges of the depression. As texturing progresses, the Contractor shall periodically check the top surface of the concrete with a straightedge to be sure the template is not displacing the mass of concrete. The Contractor may propose alternate procedures/equipment for achieving the required depressions. Such alternate procedures/equipment will be approved only after having been demonstrated as achieving the desired results. 9.04.3.2.4 Edging. Either before or immediately after the depressions are formed, the edges of the installation shall be finished in accordance with Paragraph 5.08.4.4, "Placing and Finishing" in these General Specifications. 9.04.3.2.5 Curing. Immediately after concreting operations are completed, the installation shall be cured in accordance with Subparagraph 5.08.4.4.7, "Curing" in these General Specifications. If curing compound is used, additional care shall be taken that all vertical surfaces of depressions are adequately coated. 9.04.3.3 Type B Rumble Strips. Type B Rumble Strips are constructed by placing Ceramic Raised Pavement Markers on existing bituminous concrete pavement. Raised ceramic pavement markers for Type B Rumble Strips shall be installed in the geometric pattern shown in the Standard Drawing TCD-2 in the M.O.C. Highway Design Manual, Volume 4, with Paragraph 9.03.2.6, "Ceramic Raised Pavement Markers" in these General Specifications. 9.04.3.4 Type C Scored Shoulder Rumble Strips, (Indented), and Type D Scored Shoulder rumble Strips (Milled). Description: Scored rumble strips consist of a narrow, continuous rumble strip pattern located on the shoulder just outside of the edge line, and are useful in alerting drivers who are drifting off the roadway due to inattention or being sleepy. There are two types, indented and milled. Indented Type: This type shall be constructed by rolling patterned indentations into new bituminous concrete highway shoulders using a specially modified roller with steel bars welded to the drum, as shown in the contract drawings.
41
MOC General Specifications - November 1998
Milled Type: This type shall be constructed by milling patterned indentations into new or existing bituminous concrete shoulders using small milling machines. 9.04.3.4.1 Equipment. Equipment used for installing indented shoulder rumble strips may be either a vibratory self-propelled steel wheeled roller or a combination vibratory self-propelled steel wheel-rubber tired roller. Only rubber tires that have smooth or "slick" tread design shall be used. The roller shall be equipped with a water system to moisten the drums and tires sufficiently to prevent picking up bituminous material and shall weigh a minimum or six (6) tons. 9.04.3.4.2 Roller Modification Options. The Contractor has the option of utilizing the following roller modifications, provided that the specified depth and pattern of indented shoulder rumble strip are obtained. 1. Semicircular Pipe Segments Roller Modification Option 1. Semicircular pipe segments of approximately twenty-five (25) millimeters (one-half of fifty (50) millimeter diameter pipe) reinforced with properly sized reinforcing steel bars to prevent flattening, shall be continuously welded to the drum at twenty (20) to twentytwo (22) centimeter intervals, with the rounded side away from the drum. 2. Steel Rods Roller Modification Option 2. Steel rods approximately twenty-five (25) millimeters in diameter shall be continuously welded to the drum on twenty (20) to twenty-two (22) centimeter intervals. The weld shall fill in the area between the roller drum and the outside edge of the rod. The steel rod or pipe segments shall be of such length as to result in at least six-tenths (0.6) meter of full depth indented shoulder rumble strip as specified in the contract. Steel rod or pipe segment ends, beyond the six-tenths (0.6) meter full section, may be tapered out to a maximum of one hundred fifty (150) millimeters to prevent pavement tearing. The properly modified drum may be added to a conventional roller, mounted so that it can be hydraulically forced down onto the bituminous shoulder as needed. Alternate proposals will be considered for approval if it can be demonstrated to the satisfaction of the Engineer that the specified depth and pattern of indented shoulder rumble strip can be obtained. 9.04.3.4.3 Alignment Control. Each roller shall be equipped with a guide that extends in front of the roller and is clearly visible to the operator in order that proper alignment of the completed indented shoulder rumble strip is obtained. Other suitable guidance which provides consistent alignment acceptable to the Engineer may be proposed. 9.04.3.4.4 General Requirements. The indented shoulder rumble strips shall be clearly incised grooves of the dimensions and pattern shown in the contract. 42
MOC General Specifications - November 1998
The rumble strip indentations shall only be placed where called for in the contract. This may require positioning by using planking or other methods, unless a separate hydraulically operated drum is used. Extreme care shall be used to avoid placing indentations at other locations. Should this occur, the Contractor shall remove or obliterate the indented rumble strip and restore the pavement to the satisfaction of the Engineer. 9.04.3.4.5 Placement Requirements. Indented shoulder rumble strips shall be formed in one (1) pass of the roller. Indented shoulder rumble strips shall be formed only when the bituminous shoulder material is at the proper temperature to ensure that tearing does not occur and to ensure that the depth and pattern of the indentations are being provided as specified. Milled Type: This type shall be constructed by milling (cutting) a continuous pattern of depressions into new or existing paved highway shoulders, using special milling equipment. 1. Equipment. The equipment shall consist of a rotary type cutting head with a maximum outside diameter of sixty (60) cm and will be a minimum of forty (40) cm long. The cutting head shall have the cutting tips arranged in such a pattern as to provide a relatively smooth cut (approximately 0.15 cm between peaks and valleys). The cutting head(s) shall be on its own independent suspension from that of the power unit to allow the tool to self align with the slope of the shoulder and/or any irregularities in the shoulder surface. The cutting tool shall be equipped with suitable guidance so as to provide consistent alignment of each cut in relation to the roadway, and to provide uniformity and consistency throughout the project. 2. Placement. The milled rumble strips shall be placed so as to have the finished dimensions of eighteen (18) cm (+/- 1.3 cm) wide in the direction of travel and shall be a minimum of forty (40) cm long measured perpendicular to the direction of travel. The depressions shall have a concave circular shape with a minimum one and three tenths (1.3) cm depth at center (maximum allowable depth one and six tenths (1.6) cm). The rumble strips shall be placed in relation to the roadway according to the patterns shown in the contract drawings. Pavement material resulting from the operations will become the property of the contractor to use at his option on the project or removed and disposed of in a manner approved by the Engineer. The milled rumble strips shall only be placed where called for in the contract. Should they be placed at incorrect locations, the contractor shall remove them and restore the pavement to the satisfaction of the Engineer. At the end of each working day, all equipment shall be removed to a location where it does not present a hazard to traffic, the pavement shall be cleaned by sweeping or flushing and the work area reopened to traffic.
43
MOC General Specifications - November 1998
9.04.4 METHOD OF MEASUREMENT. 9.04.4.1 Speed Bumps, Type A Rumble Strips and Type B Rumble Strips. Speed Bumps, Type A Rumble Strips, and Type B Rumble Strips shall be measured by the square meter for all Work authorized, completed and accepted by the Engineer based on the horizontal dimensions of the installations as shown in Volume 4 of the M.O.C. HIGHWAY DESIGN MANUAL or modified on the plans or ordered by the Engineer. There shall be no measurement for pavement excavation required to construct Type A Rumble Strips nor will such quantities be deducted from previously paid quantities of pavement structure items. There shall be no separate measurement of the ceramic raised pavement markers included in Type B Rumble Strips. 9.04.4.2 Type C Scored Shoulder Rumble Strips. Type C Indented Scored Shoulder Rumble Strips will be measured longitudinally, parallel to the traveled way, for each side of the roadway where strips are placed. The rumble strip measurement shall begin at the transverse center of the first score and proceed along the centerline of the rumble strip pattern to the center of the final score in the pattern. Breaks in the rumble strip pattern for exits, principal intersections and other interruptions in normal shoulder width will not be included in the measurement for payment. 9.04.4.3 Type D Scored Shoulder Rumble Strips. Type D Milled Scored Shoulder Rumble Strips will be measured longitudinally, parallel to the traveled way, for each side of the roadway where the stripe are milled. Breaks in the rumble strip pattern will not be included in the measurement for payment. 9.04.5 PAYMENT. Rumble Strip and Speed Bump Items of Work, measured as provided above, will be paid for at the contract unit price(s) as specified in the Bill of Quantities, which price(s) shall be full compensation for furnishing all materials, construction and for all labor, equipment, tools, supplies and all other items necessary for the proper completion of Work as specified in Subsection 1.07.2, "Scope of Payment" in these General Specifications.
PAYMENT WILL BE MADE UNDER ONE OR MORE OF THE FOLLOWING: ITEM NO
PAY ITEM
PAY UNIT
90401
Speed Bumps
Square Meter
90402
Rumble Strips
Square Meter 44
MOC General Specifications - November 1998
9040201
Rumble Strips, Type A
Square Meter
9040202
Rumble Strips, Type B
Square Meter
9040203
Scored Shoulder Rumble Strips, Type C - Indented
Linear Meter
9040204
Scored Shoulder Rumble Strips, Type D - Milled
Linear Meter
45
MOC General Specifications - November 1998
SECTION 9.05 - HIGHWAY SIGNING 9.05.1 DESCRIPTION. This Work shall consist of furnishing and installing highway signs, delineators, object markers, kilometer posts and support assemblies as shown on the plans and in accordance with the specification or as directed by the Engineer. All sign faces and lettering shall be in accordance with the Ministry Standards for Road Safety Features, the Manual on Uniform Traffic Control Devices (M.U.T.C.D.), as shown on the plans or as directed by the Engineer. Unless otherwise shown in the plans or noted in the Special Specifications, all signs shall be lettered in both Arabic and English. This shall also include construction of concrete foundations for sign supports, gantries and cantilevers and the fabrication, erection and finishing of steel gantry and cantilever sign structures. The Work shall also include the construction, erection and relocation of all temporary signing works required prior to construction, during construction and prior to opening. ITEMS IN BILL OF QUANTITIES Highway Signs, Ground-Mounted Highway Signs, Overhead Sign Support - (Breakaway) Sign Support - Overhead Kilometer Post Delineators Reflectors Object Markers All overhead signs shall be either internally illuminated or retroreflectorized through the use of high intensity retroreflective sheeting as per the M.O.C. M.U.T.C.D. 9.05.2 MATERIALS. Materials shall conform to the following requirements: 9.05.2.1 Concrete. Concrete for reinforced concrete footings shall conform to Class B as specified in Paragraph 5.01.1 "Description" in these General Specifications. Concrete to support single posts of small signs shall conform to Subsection 5.03.9, "Concrete for Minor Structures" in these General Specifications. 9.05.2.2 Reinforcing Steel. Reinforcing steel shall conform to the requirements of Section 5.02, "Reinforcing Steel" in these General Specifications. 9.05.2.3 Sign Supports. Posts, gantries and cantilever sign supports shall conform to the requirements of the M.O.C. "Standards for Road Safety Features" and M.O.C. Circular No. 747 dated 2/4/1410 Hegira, unless otherwise shown on the plans. 9.05.2.4 Steel Channels. Steel channels shall conform to the requirements of Section 5.05, "Steel Structures and Miscellaneous Metal Work" in these General Specifications. 9.05.2.5 Standard Industrial Sign Supports. Standard industrial steel sign supports shall be fabricated from billet or rail steel conforming to Schedule 40 ASTM A-120. Pipe posts shall be hot dipped galvanized according to ASTM A 123 after 46
MOC General Specifications - November 1998
yielding holes are drilled or punched with an absolute minimum outside diameter of seventy-three (73) millimeters ASTM-A-120. Steel pipe and I.P.E. sign supports shall have a slip base breakaway support in accordance with the M.O.C. Sign Erection Standards Manual (TS-02). Signs requiring two (2) or three (3) posts shall use I.P.E. posts in accordance with the M.O.C. Road Services Department "DIMENSIONING OF SIGN POSTS AND FOOTINGS FOR DIRECTIONAL SIGNS." 9.05.2.6 Object Marker and Delineator Posts. The Contractor shall fabricate object marker and delineator posts from steel, aluminum or G.I. pipe of seventy-five (75) millimeters as specified M.O.C. TCD-03. Delineator posts may also be fabricated from plastic. 9.05.2.6.1 Steel Posts. Furnish flanged U-channel steel posts weighing approximately three kilograms per meter (3 kg/m) that conform to ASTM A 36. Galvanize the posts according to ASTM A 123. 9.05.2.6.2 Aluminum Posts. Furnish standard shaped three (3) millimeter thick aluminum posts conforming to ASTM B 221, Alloy 6061-T6. 9.05.2.6.3 Plastic Posts. Furnish flexible delineator posts made with high impact resistant polymer reflective material with a minimum area of seven (7) centimeters wide. 9.05.2.7 Galvanizing. All steel supports, bolts, nuts and washers shall be zinc coated in accordance with ASTM A 123. All bolts, nuts and washers shall be galvanized in accordance with ASTM A 153. 9.05.2.8 Sign Panel Materials. Signboard construction shall conform to the requirements of M.O.C. Standard Details as shown on the plans or as otherwise approved by the Engineer and shall meet the following requirements: 9.05.2.8.1 Aluminum Alloy Panels, Sheets and Miscellaneous Hardware. Aluminum alloy panels, sheets and miscellaneous hardware shall conform to ASTM B 209 or B 211 as appropriate, using alloy 6061-T6 or 5052-h38. All aluminum alloys shall have a minimum tensile strength of two thousand five hundred (2,500) kilograms per square centimeter and a minimum yield strength of two thousand (2,000) kilograms per square centimeter. 9.05.2.8.2 Extruded Aluminum Panels. Extruded Aluminum Panels shall be fabricated from aluminum Alloy 6063-T6 conforming to the requirements of ASTM B221 Panels and shall have a minimum thickness of two millimeters for sizes up to 762 X 762 millimeters. Larger panels shall have a minimum thickness of three millimeters. Sheets for plain sign plates shall have a minimum thickness of three (3) millimeters unless otherwise specified. 9.05.2.8.3 Steel Sheet Panels. Steel sheet panels shall conform to the requirements of ASTM A 525, minimum two (2) millimeters thickness, unless otherwise noted on the plans.
47
MOC General Specifications - November 1998
9.05.2.8.4 Stainless Steel Bolts, Washers and Self-Locking Nuts. These items shall conform to ASTM A 276, Chromium Nickel Grade with a minimum yield of two thousand (2,000) kilograms per square centimeter. 9.05.2.8.5 Vulcanized Fiber Washers. Fiber washers shall conform to ASTM D 710, Gray, Commercial Grade, when shown on the plans. 9.05.2.8.6 Hard Rubber Washers. Hard rubber washers, when shown on the plans, shall be as approved by the Engineer. 9.05.2.8.7 Nylon and Neoprene Fittings. Nylon and/or neoprene washers, spacers, sleeves, etc. when specified on the plans, shall be as approved by the Engineer. 9.05.2.8.8 Porcelain Enamel Coatings. Porcelain enamel coatings for sign faces shall be a minimum of four hundredths (0.04) millimeter in thickness. The coating shall be applied by automatic spray equipment conforming to Porcelain Enamel Institute specifications. The coating shall have a gloss reading of fifty (50) to seventy (70) units at an angle of fifty (50) grads when measured in accordance with ASTM C 346. Colors shall be in accordance with the M.U.T.C.D. Color samples representative of all signs to be furnished shall be submitted to the Engineer for approval prior to ordering. Adherence of the coating shall be verified in accordance with the accelerated spall test as specified by the Porcelain Enamel Institute. The coating shall have a weight loss of less than one-half (½) milligrams per square centimeter in boiling six percent (6%) citric acid when tested in accordance with ASTM C 283. All exposed surfaces of the coating shall be free of blemishes that may impair the serviceability or detract from the appearance of the sign. 9.05.2.8.9 Letters, Numerals, Arrows, Symbols, Etc. Letters, numerals, arrows, symbols, border and other features of the sign face shall conform to the requirements of the M.U.T.C.D. Spacing of mounting holes for screws, bolts, or rivets shall be determined by character size and shape but in no case shall the spacing be more than twenty (20) centimeters on center. Each character shall be secured to the sign with non-twist, corrosion resistant screws, bolts, or rivets. Retroreflective letters, numerals, symbols, etc., cut from retroreflective sheeting, shall be of the color and coefficient of retroreflectivity specified on the plans and applied to the sign face in accordance with instructions of manufacturer of retroreflective sheeting. Porcelain enamel letters, numerals, borders, etc., shall consist of individual embossed aluminum frames into which reflex retroreflectors are installed so as to be 48
MOC General Specifications - November 1998
an integral part of the character or otherwise securely affixed to prevent displacement in handling or service. Mounting hole and fasteners requirement shall be as described above. 9.05.2.8.10 Aluminum Sign Sections. 1. General. Aluminum sign sections shall be fabricated in accordance with the plans, from standard widths of aluminum sheets, panels or other hardware and materials as required. Each section shall be provided with a perimeter frame. The extruded horizontal top and bottom frame members shall have an integral retainer track for affixing mounting bolts to provide for blind fastening of sign panel to post support. The extruded vertical side frame members shall be a channel. An additional slot shall be milled in the top and bottom frame for later field insertion of post clip posts. The perimeter frame shall be assembled by means of self-tapping hex head stainless steel screws. A sealant shall be used at the corner to prevent moisture penetration. If the horizontal finished dimension of the sign exceeds eight (8) meters and vertical panels are used, the vertical extruded frame members shall have an integral retainer track for mounting bolts. The horizontal frame members shall be extruded channels. 2. Honeycomb Sections. The front sheet of each sign shall be fabricated in one piece from minimum one and sixth tenths (1.6) millimeter aluminum alloy conforming to Subparagraph 9.05.2.8.1, "Aluminum Alloy Sheets and Miscellaneous Hardware" in these General Specifications. The surface shall be treated with amorphous chromate conversion coating conforming to the requirements of ASTM B 449, Class 2. Core material shall be phenolic impregnated cellulose honeycomb. Core material shall be resistant to fungus. The back sheet of each panel shall be fabricated in one piece from minimum one (1) millimeter aluminum alloy conforming to Subparagraph 9.05.2.8.1, "Aluminum Alloy Sheets and Miscellaneous Hardware" in these General Specifications. The surface shall be treated with an amorphous chromate conversion coating conforming to the requirements of ASTM B 449, Class 2. The laminating adhesive shall be of the thermoplastic neoprene rubber base solvent type exhibiting a resilient oil and water resistant bond. The solids content shall be suitable for automatic spray application or roller coat application and yield a dry weight of adhesive of fifty (50) grams per square meter minimum. A uniform film of adhesive shall be applied to each surface and force dried at a temperature of eighty-two degrees Celsius (82 o C.) minimum. The final bond to be made while the glue line temperature is a minimum of eighty-two degrees Celsius (82 o C.) using sufficient pressure to insure intimate mating of the surfaces. Minor amounts of adhesive overspray on perimeter of back sheet or channel shall not be cause for rejection.
49
MOC General Specifications - November 1998
The tensile strength of the honeycomb laminate construction shall have a minimum of one and one-half (1½) kilograms per square centimeter when tested in accordance with ASTM C 297 and ASTM C 481, Cycle A. Weep holes three (3) millimeters in diameter shall be drilled in the perimeter frame at the bottom of each panel. Holes shall be spaced approximately ten (10) millimeters in from either end and in the center of each panel. 3. Panel Sections. Extruded aluminum sign panels that require splicing shall be spliced by rivets, bolts or other fasteners as shown on the plans or approved by the Engineer. All splices shall be capable of developing the full strength of the section. Rivets or other fasteners shall be flush with the face side. The aluminum panels shall be fastened to frames, stiffeners, wind beams, or joint backing strips as shown on the plans or approved by the Engineer. All fabrication of sign panels, including cutting and drilling or punching of holes, except mounting holes for cutout letters, numbers, symbols, etc., shall be completed prior to degreasing and application of coating or retroreflective sheeting. Seams of all multiple section signs shall be milled to a tolerance of plus or minus eight tenths (0.8) millimeter from a straight plane so that when two adjoining panels are assembled, no gap over one and one-half (1½) millimeters shall be visible between panels. All sharp edges that would present a hazard in handling shall be smoothed. Panels may be milled up to six (6) millimeters on each side in order to achieve edge uniformity. All adhesively bonded panels shall have exterior faces of such flatness that, when measured at twenty-five degrees Celsius (25 o C), the maximum slope of the surface at any point measured from the nominal plane of the surface shall not exceed one and five tenths (1.5%) percent. At each corner on the face of each panel, one three (3) millimeter selfplugging rivet shall be used to fasten the sheet to the perimeter panel. Rivets appearing on the face side shall be a color similarly required for the face of the panel. On multiple panel signs, the closure extrusions between panels shall be provided by the manufacturer. Extrusions shall be set in from edge of panels for clearance of rivets and frame. 9.05.2.9 Retroreflective Sheeting. Retroreflective sheeting shall consist of a white or colored sheeting having a smooth outer surface and that essentially has the property of a retroreflector over its entire surface. There are six (6) types and five (5) classes of retroreflective sheeting. 1. Classification - Retroreflective sheeting shall be classified as follows: Type I - A medium-intensity retroreflective sheeting referred to as "engineering grade" and typically enclosed lens glass-bead sheeting. Type II - A medium-intensity retroreflective sheeting sometimes referred to as "super engineering grade" and typically enclosed lens glass-bead sheeting. 50
MOC General Specifications - November 1998
Type III - A high-intensity retroreflective sheeting that is typically encapsulated glass-bead retroreflective material. Type IV - A high-intensity retroreflective sheeting. This sheeting is typically an unmetallized microprismatic retroreflective element material. Type V - A super-high-intensity retroreflective sheeting. This sheeting is typically a metallized microprismatic retroreflective element material. Type VI - An elastomeric high-intensity retroreflective sheeting without adhesive. This sheeting is typically a vinyl microprismatic retroreflective material. 2. Backing Classes - The backing required for retroreflective sheeting Types I through V shall be classified as follows: Class I - The adhesive backing shall be pressure-sensitive, require no heat, solvent, or other preparation for adhesion to smooth, clean surfaces. Class II - The adhesive backing shall have an adhesive that shall be activated by applying heat and pressure to the material. The temperature necessary to form a durable permanent bond shall be a minimum of sixty-six degrees Celsius (66 o C). The Class II material shall be respositionable under normal shop conditions and at substrate temperatures up to thirty-eight degrees Celsius (38 o C) and without damage to the material. The Class II material may be perforated to facilitate removal of air in heat-vacuum laminators, but the perforation must be of a size and frequency such that they do not cause objectionable blemishes when the sheeting is printed. Class III - The adhesive backing shall have a positionable low-tack pressuresensitive adhesive that requires no heat, solvent, or other preparation for adhesion to smooth, clean surfaces. It shall be repositionable up to a temperature of thirtyeight degrees Celsius (38 o C) without damage to the material. Class IV - The adhesive backing shall have a low-temperature pressuresensitive adhesive that permits sheeting applications at temperatures down to minus seven degrees Celsius (-7 o C) without the aid of heat, solvent, or other preparation for adhesion to smooth, dry, clean surfaces. Class V - This shall be a nonadhesive backing made of material commercially used for self-supporting products such as traffic cone collars, temporary roll-up warning signs, and post bands. 3. Performance Requirements - This is a summary of the minimum performance requirements for each type of retroreflective sheeting. Type I - Minimum Coefficient of Retroreflection - Table 9.05-1; Artificial Weathering - 1000 h; Retroreflectance or daytime lightness - Table 9.05-2.
51
MOC General Specifications - November 1998
Type II - Minimum Coefficient of Retroreflection - Table 9.05-3; Artificial Weathering - 2200 h; Reflectance or daytime lightness - Table 9.05-2; Other requirements: When the color orange is specified the artificial weathering will be 500 hours. Type III - Minimum Coefficient of Retroreflection - Table 9.05-4; Artificial Weathering - 2200 h; Reflectance or daytime lightness - Table 9.05-2; Other Requirements: When the color orange is specified the artificial weathering will be 500 hours. Type IV - Minimum Coefficient of Retroreflection - Table 9.05-5; Artificial Weathering - 2200 h; Reflectance or daytime lightness - Table 9.05-6. Other Requirements: When the color orange is specified the artificial weathering will be 500 hours. Type V - Minimum Coefficient of Retroreflection - Table 9.05-7; Artificial Weathering-2200h; Reflectance or daytime lightness - Table 9.05-8. Type VI - Minimum Coefficient of Retroreflection-Table 9.05-9; Artificial Weathering-250 h; Reflectance or daytime lightness-Table 9.05-2. 4. Coefficient of Retroreflection - The coefficient of retroreflection shall meet or exceed the minimum requirements of Tables 9.05-1, 3, 4, 5, 7 and 9 when tested in accordance with ASTM E810 Test Method. 5. Daytime Color - The color of the sheeting shall conform to requirements of Table 9.05-10 and one of the following Tables 9.05-2, 6, or 8 when tested in accordance with Test Method ASTM E97, Method E308, Practice E805, and Practice E 991. Daytime and nighttime color shall have substantially the same hue. 6. Artificial Weathering - The retroreflective sheeting shall be weather resistant and show no appreciable cracking, scaling, pitting, blistering, edge lifting, or curling, or more than eight-tenths (0.8) millimeter shrinkage or expansion when four (4) panels are exposed the number of hours specified in Table 9.05-11 in accordance with ASTM Practice G 123, Type E or FH, with humidifier Off, washing the panels with a five percent (5%) HCl solution for forty-five (45) seconds, rinsing thoroughly with clean water, blotting with a soft cloth, brushing to equilibrium at standard temperature and testing for coefficient of retroreflection. The four (4) panel readings will be averaged. 7. Specular Gloss. The retroreflective sheeting shall have a ninety-four and four tenths (94.4) grad specular gloss of not less than forty (40) when tested in accordance with ASTM D 523. 8. Color Processing. Retroreflective sheeting shall permit cutting and color processing with compatible transparent and opaque process inks in accordance with manufacturer's recommendation at temperatures of fifteen degrees Celsius (15 o C.) to forty degrees Celsius (40 o C) and relative humidity of twenty (20) to eighty (80) percent. The sheeting shall be heat resistant and permit force curing without staining of applied or unapplied sheeting at temperatures as recommended by the manufacturer. Color process for High Intensity Retroreflective Sheeting shall be 52
MOC General Specifications - November 1998
restricted to sheeting with heat activated adhesive backing unless otherwise recommended by the manufacturer. 9. Shrinkage. A twenty-three (23) centimeter square retroreflective sheeting sample with liner shall be conditioned a minimum of one (1) hour at twenty-two degrees Celsius (22o C.) and fifty (50) percent relative humidity. The liner shall be removed and the sample placed on a flat surface with the adhesive side up. Ten (10) minutes after liner is removed and again after twenty-four (24) hours, the specimen shall be measured to determine the amount of dimensional change. The retroreflective sheeting shall not shrink in any dimension more than eight tenths (0.8) millimeter in ten (10) minutes nor more than three (3) millimeters in twenty-four (24) hours. 10. Application Requirements. Retroreflective sheeting shall be "Medium Intensity" (Type I), Medium-High-Intensity (type II), or High-Intensity (Type III) unless a higher intensity is specified in these General Specifications or the Special Specifications. All retroreflective sheeting shall satisfy the tests contained in ASTM D4956 for the Type specified. The Contractor shall supply a Certificate of Eligibility stating that the retroreflective material has been specifically modified for use in Saudi Arabia. TABLE 9.05-1 TYPE I SHEETING Minimum Coefficient of Retroreflection (RA) (Candelas per lux per square meter) Medium Intensity Observation Angle
Entrance Angle
White
Red
Orange
Brown
Yellow
Gree n
Blue
0.20o
-4.0o
70
14.0
25.0
2.0
50
9.0
4.0
0.20o
+30o
30
6.0
7.0
1.0
22
3.5
1.7
0.55o
-4.0o
30
7.5
13.5
1.0
25
4.5
2.0
0.55o
+33o
15
3.0
4.0
0.5
13
2.2
0.8
TABLE 9.05-2 SHEETING TYPES I, II, III AND IV LUMINANCE FACTOR (Y%) (DAYTIME) Color
Minimum
Maximum
White
27
...
Yellow
15
45
Orange
14
30
53
MOC General Specifications - November 1998
Green
3.0
9.0
Red
2.5
12
Blue
1.0
10
Brown
4.0
9.0
TABLE 9.05-3 TYPE II SHEETING Minimum Coefficient of Retroreflection (RA) Candelas per Lux Square Meter Medium-High Intensity Observation Angle
Entrance Angle
White
Yellow
Orange
Green
Red
Blue
Brown
0.2o
-4o
140
100
60
30
30
10
5.0
0.2o
+30o
60
36
22
10
12
4.0
2.0
0.5o
-4o
50
33
20
9.0
10
3.0
2.0
0.5o
+30o
28
20
12
6.0
6.0
2.0
1.0
54
MOC General Specifications - November 1998
TABLE 9.05-4 TYPE III SHEETING Minimum Coefficient of Retroreflection (RA) (Candelas per lux per square meter) High Intensity Observation Angle
Entrance Angle
White
Red
Orange
Yellow
Gree n
Blue
0.2o
-4o
250
45
100
170
45
20.0
0.2o
+30o
150
25
60
100
25
11.0
0.5o
-4o
95
15
30
62
15
7.5
0.5o
+30o
65
10
25
45
10
5.0
TABLE 9.05-5 TYPE IV SHEETING Minimum Coefficient of Retroreflection (RA) (Candelas per lux per square meter) High Intensity Observation Angle
Entrance Angle
0.2o
White
Yellow
Orange
Green
Red
Blu e
Brown
-4o
250
170
100
35
35
20
7.0
0.2o
+30o
80
54
34
9
9
5.0
2.0
0.5o
-4o
135
100
64
17
17
10
4.0
0.5o
+30o
55
37
22
6.5
6.5
3.5
1.4
55
MOC General Specifications - November 1998
TABLE 9.05-6 SHEETING TYPE IV LUMINANCE FACTOR (Y%) DAYTIME Color
Minimum
Maximum
White
50
...
Yellow
30
45
Orange
15
30
Green
6.0
15
Red
6.0
15
Blue
3.0
8.0
Brown
1.0
6.0
TABLE 9.05-7 TYPE V SHEETING Minimum Coefficient of Retroreflection (RA) (Candelas per lux per square meter) Super-High-Intensity Observation Angle
Entrance Angle
White
Yellow
Orange
Green
Red
Blue
0.2o
-4o
700
470
280
120
120
56
0.2o
+30o
400
270
160
72
72
32
0.5o
-4o
160
110
64
28
28
13
0.5o
+30o
75
51
30
13
13
6.0
56
MOC General Specifications - November 1998
TABLE 9.05-8 SHEETING TYPE V Luminance Factor (Y%) Daytime Typically Metallized Microprismatic Delineator Material White
15
...
Yellow
12
30
Orange
7.0
25
Green
2.5
11
Red
2.5
11
Blue
1.0
10
Brown
1.0
9.0
TABLE 9.05-9 TYPE VI SHEETING Minimum Coefficient of Retroreflection (RA) (Candelas per lux per square meter) Elastomeric-High-Intensity Observation Angle
Entrance Angle
White
Yellow
Orange
Green
Red
Blue
0.2o
-4o
250
170
70
30
35
20
0.2o
+30o
95
64
26
11
13
7.6
0.5o
-4o
200
136
56
24
28
18
0.5o
+30o
60
40
17
7.2
8.4
4.8
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MOC General Specifications - November 1998
TABLE 9.05-10 Color Specifications for Retroreflective Sheeting (Daytime) Chromaticity Coordinates* 1 Color
X
Y
White
.303
Red
2
X
Y
X
Y
X
Y
.287
.368
.353
.340
.380
.274
.316
.613
.297
.708
.292
.636
.364
.558
.352
Brown
.445
.353
.604
.396
.556
.443
.445
.386
Yellow
.498
.412
.567
.442
.479
.520
.438
.472
Green
.030
.380
.168
.346
.286
.428
.201
.776
Blue
.144
.030
.244
.202
.190
.247
.066
.208
*The four pairs of chromaticity coordinates determine the acceptable color in terms of the CIE 1931 Standard Colorimetric System measured with Standard Illuminate source C. TABLE 9.05-11 Artificial Weathering Photometric Requirements Type
Hours
Minimum Coefficient of Retroreflection (RA)
I
1000
50% of Table 9.05-1
II
2200A
65% of Table 9.05-3
III
2200A
80% of Table 9.05-4
IV
2200A
80% of Table 9.05-5
V
2200
80% of Table 9.05-7
VI
250
0% of Table 9.05-9
When the color orange is specified the artificial weathering will be 500 h.
A
9.05.2.10 Delineators and Retroreflectors. Delineator posts shall be steel, aluminum or plastic as specified in Paragraph 9.05.2.6 "Object Markers and Delineator Posts" in these General Specifications of the dimensions and weights shown on the plans or in the M.U.T.C.D.
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MOC General Specifications - November 1998
Sheets for delineator panels shall conform to the requirements as specified above in Paragraph 9.05.2.8 "Sign Panel Materials" in these General Specifications. Retroreflective sheeting material shall be High-Intensity conforming to the requirements of M.U.T.C.D. Section 3.04. When microprismatic retroreflectors are specified, they shall conform to the requirements of Type V Super-High-Intensity Retroreflective Sheeting and the standard drawings, as specified in Paragraph 9.05.2.9 "Retroreflective Sheeting" in these General Specifications. Epoxy Resin Adhesive for bonding retroreflectors to hardened Portland cement concrete shall conform to AASHTO M 237. 9.05.2.11 Object Markers. Materials for object markers, including sign posts, sign face material, retroreflective sheeting, and retroreflectors as detailed in the Ministry of Communications M.U.T.C.D., shall conform to the requirements as specified above in Subsection 9.05.2, "Materials" in these General Specifications. 9.05.3 CONSTRUCTION REQUIREMENTS. 9.05.3.1 Signs. 9.05.3.1.1 Design. All signs shall be of the type, color, design, and size indicated on the plans. All signs shall conform to the Manual on Uniform Traffic Control Devices (M.U.T.C.D.) and M.O.C. Standard Designs. For nomenclature purposes, the following designations shall be as defined unless modified in the Special Specifications. Type A Signs - Retroreflective sheeting on plain aluminum sheets. Type B Signs - Retroreflective sheeting on extruded aluminum panel sections. Type C Signs - Porcelain enamel coating on honeycomb aluminum sections. 9.05.3.1.2 Shop Drawings. The Contractor shall submit to the Engineer for approval, three (3) copies of drawings for all special sign faces and all sign faces bearing messages, showing the design and/or arrangement and spacing of both the Arabic and English sign messages. Official town names and their Arabic and English spelling shall be as provided by the Engineer. Size and style of lettering shall be as shown on the plans and in accordance with the M.U.T.C.D. 9.05.3.2 Storage and Shipment of Signs. Signs delivered for use on a project shall be stored off ground and under cover in a manner approved by the Engineer. Any sign damaged, discolored or defaced during transportation, storage or erection shall be rejected. Shipment to the job site shall be accomplished with each sign separated by heavy paper or cloth and the bundle bound with chord to prevent movement. 9.05.3.3 Placement and Orientation. The Engineer will establish and mark the longitudinal location of each sign.
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MOC General Specifications - November 1998
The sign shall be laterally positioned from the shoulder edge or curb as shown on the plans or directed by the Engineer. The Contractor shall stake the location of the sign supports. The Contractor shall be responsible for the proper elevation, off-set, level, and orientation of all signs he erects. He shall exercise due care in the preservation of stakes for his and the Engineer's use. If any stakes are lost, damaged, displaced, or removed the Contractor shall have them reset at his expense. Unless otherwise shown on the plans, all signs shall be erected so that the edge and face of the sign are truly vertical and the face is at an angle of ninety-three degrees (93o) grads to the centerline; that is, facing slightly toward the centerline of the lane which the sign serves. Where lanes divide or are on sharp curves, the Contractor shall orient sign faces as indicated on the plans or as directed by the Engineer so that they will be most effective both day and night and so as to avoid specular reflection and glare. All sign supports shall be plumbed. 9.05.3.4 Footings for Posts. Footings shall be excavated to the minimum dimensions shown in the Ministry of Communications Circular No. 747 dated 2/4/1410 Hegira. Footings shall be installed and backfilled flush with the finished ground surface. Class B concrete shall be placed against the undisturbed excavated faces, except that the top fifteen (15) centimeters of each footing shall be formed. Forming of the entire footing will not be permitted unless approved by the Engineer. Concrete shall be thoroughly vibrated. Tops of footings shall be finished with a wood float and all exposed edges shall be rounded with an edger. Backfill shall be compacted to ninety percent (90%) of the maximum dry density determined in accordance with AASHTO T 180. Care shall be taken to prevent damage to the finished concrete. Backfill shall be brought up level with the finished ground line. The top of the foundation shall not extend more than seventy-five (75) millimeters above the terrain. 9.05.3.5 Sign Posts. 9.05.3.5.1 General. The number and lengths of posts shown in the plans for small signs are for bidding purposes only. When progress of the Work permits, the Engineer will authorize the location of each sign, with the station and offset distance from the edge of pavement. The Contractor shall be responsible for determination of post lengths to provide the vertical clearance shown on the plans. Field cutting of posts shall be performed by sawing of the bottom (to be embedded) end. Sign supports shall be fabricated as detailed in the Ministry of Communications Circular No. 747 dated 2/4/1410 Hegira unless modified by the plans. When galvanizing is specified, assemblies shall be hot-dip galvanized after fabrication. All welds shall be mechanically cleaned before galvanizing. Galvanized materials on which the galvanizing has been damaged in transporting, handling or erection will be rejected or may, with the approval of the Engineer, be repaired in the field by the zinc alloy stick method. Required field welds and adjacent areas on which the galvanizing has been damaged shall be galvanized by this same method. The zinc alloy stick shall be cast zinc, tin, and lead in combination with fluxing ingredients. The compound shall be completely liquid at a temperature not lower 60
MOC General Specifications - November 1998
than two-hundred forty degrees Celsius (240 o C). The area to be regalvanized shall be thoroughly cleaned, including the removal of slag on welds. The surface shall be heated with an oxyacetylene torch to approximately three hundred fifteen degrees Celsius (315o C) and the alloy stick rubbed over the surface to fix a deposit. While the alloy is still liquid, a clean wire brush shall be used to smooth the deposit evenly over the entire area being galvanized. If a heavy deposit or build-up is required to match the original coating, more alloy shall be added immediately to the initial bond deposit and spread with a paddle or brush until the required thickness is obtained. Edges of drilled holes shall be coated with commercially available zinc-rich paint. Shop drawings will not be required for pipe posts greater than fifty (50) millimeters in outside diameter showing the details of the breakaway feature. The Contractor shall furnish to the Engineer, fabricator's certifications in triplicate certifying that the material supplied conforms to all of the requirements specified. 9.05.3.5.2 Painting. All exposed steel surfaces, except galvanized surfaces, shall receive one (1) shop coat of Paint No. 1 and two (2) field coats consisting of Paint No. 5 followed by Paint No. 4. 9.05.3.6 Fastening Signs to Sign Posts. Signs shall be fastened to sign supports in accordance with the requirements of the plans, the recommendations of the sign manufacturer, and to the satisfaction of the Engineer. Fasteners shall be vandal-anti-thief resistant to the extent practical. All bolt heads, screw heads, and washers used to install sign on support shall be such that they do not protrude out from the surface of the sign. The heads of the bolts or screws shall be as nearly as practical the same as the color of the background or message area at the point where the hardware is exposed. To the extent practical, fastener systems shall be designed so as not to require the drilling of the sign face. When steel signs are mounted with aluminum hardware or where aluminum signs are mounted with steel hardware or on steel posts, approved asphalt, nylon, or neoprene insulation shall be installed at all points where dissimilar metals might come in contact. 9.05.3.7 Delineators and Retroreflectors. Delineator posts shall be erected at locations shown on the plans and set at elevations such that the delineator retroreflectors will be at the indicated height above the ground surfaces. Posts shall be set plumb and to the established lines and grades. The method of driving shall not substantially alter the cross-sectional dimensions of the posts or damage the post. Posts which are damaged by driving shall be removed and replaced at the Contractor's expense. Predrilling of post holes may be necessary to avoid damage to the posts. Sheet metal panels shall be attached to posts as shown on the plans and retroreflectors or retroreflective sheeting installed as specified.
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MOC General Specifications - November 1998
9.05.3.8 Object Markers. Object markers shall be installed at the locations shown on the plans or designated by the Engineer in accordance with the above requirements. 9.05.4 REPLACEMENT SIGNS. The Contractor shall furnish additional signs to be used for maintenance purposes of the number and type as shown in the plans or specified in the Special Specifications. The Contractor shall deliver these signs to the Road District designated by the Ministry. The cost of transporting replacement signs shall be considered subsidiary to other items in the Bill of Quantities. 9.05.5 METHOD OF MEASUREMENT. Ground-mounted and overhead highway signs shall be measured by the face area to the nearest one-hundredth (1/100) square meter for each highway sign and to the nearest one-tenth (1/10) square meter for the total of each type of sign, as specified in the Bill of Quantities. The area of each sign shall be that of the smallest rectangular, circular, triangular, trapezoidal, or other standard Ministry sign shape that will encompass the sign panel. No measurement shall be made of stiffeners, e.g., those needed to support smaller signs onto larger ones, as these are considered subsidiary to the pay items(s) of signs appearing in the Bill of Quantities. Sign support, breakaway post, of the type specified in the Bill of Quantities, shall be measured by the kilogram for I-beam or by the number of units for tubular as installed and accepted, which shall include the sign post, hinged as required, brackets, coupling bolts, breakaway couplings, nuts, etc., all as specified for the proper erection and anchoring of the post onto the anchor plate; or the threaded reducer when a threaded collar detail is applicable. Overhead sign supports shall be measured by the metric ton as specified in the Bill of Quantities, complete in place as determined from the Engineer’s computed weights and as specified in the specifications under Subsection 5.05.8 “Method of Measurement;” in these General Specifications except that all steel items in connection with walkways on overhead signs, including rails, brackets and fasteners onto the tubular support, gratings and all incidentals thereof, shall be measured by the metric ton, complete in place, as determined by weighing in the presence of the Engineer on an approved, accurate set of scales. Sign support work shall include all structural excavation and backfill, foundation concrete, reinforcement, structural steelwork, including sign support brackets fittings and fixings and all incidentals associated with these items. See Standard Drawings SS-1A, and SS-1C in the M.O.C. Highway Design Manual, Volume 4. Minor modifications approved by the Engineer to expedite fabrication, will not result in changes to the measure of quantities. There shall be no separate measurement of excavation, backfill, concrete, reinforcing steel, or any other material or Work incidental to installation of sign supports. Delineators and Object Markers shall be measured by the unit for all work including the posts and delineators or object markers of each type authorized, completed, and accepted by the Engineer. Retroreflectors shall be measured by the unit of work authorized, completed, and acceptably installed directly to guardrails, barriers and fences when no posts are required.
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MOC General Specifications - November 1998
Retroreflectors shall be measured by the number of units of the various types placed and accepted, irrespective of color. This work shall include the furnishing of all materials; surface preparation; application of the adhesive and/or fastening of the reflective strips or reflectors onto existing elements; curing and cleaning. Kilometer posts shall be measured by the number of units of each type of single - or double-face assemblies installed and accepted, which shall include the sign plate(s) regardless of size, the post and the post base, including all excavation and backfilling, concrete, reinforcement, anchor bolts, plates, threaded reducer and all incidentals in connection with these items. All Temporary Signing shall be measured as described in the Bill of Quantities under individual specific items contained in Section 9.02, "Traffic Control Through Work Zones" in these General Specifications. 9.05.6 PAYMENT. Items of Work, measured as provided above, will be paid for at the contract unit price(s) for each as specified in the Bill of Quantities, which price(s) shall be full compensation for furnishing all materials, erection, and for all labor, equipment, tools, supplies, and all other items necessary for the proper completion of the Work as specified in Subsection 1.07.2, "Scope of Payment" in these General Specifications. PAYMENT WILL BE MADE UNDER ONE OR MORE OF THE FOLLOWING: ITEM NO
PAY ITEM
PAY UNIT
90501
Highway Signs, Ground-mounted
Square Meter
9050101
Highway Signs, Ground-Mounted - Sheet Aluminum
Square Meter
9050102
Highway Signs, Ground-Mounted - Aluminum Planking or Internally Double Skin Aluminum Sheet
Square Meter
90502
Highway Signs, Overhead
Square Meter
9050201
Highway Signs, Overhead - Sheet Aluminum
Square Meter
9050202
Highway Signs, Overhead - Aluminum Planking or Internally Double Skin Aluminum Sheet
Square Meter
90503
Sign Support, (Breakaway) I.P.E.
Kilogram
9050301
Sign Support, (Breakaway) Single Post I.P.E.
Kilogram
9050302
Sign Support, (Breakaway) Double Post I.P.E.
Kilogram
9050303
Sign Support, (Breakaway) Triple Post I.P.E.
Kilogram
90504
Sign Support, (Breakaway) Tubular
Unit
90505
Sign Support-Overhead
Ton
9050501
Sign Support-Gantry
Ton
9050502
Sign Support-Cantilever
Ton 63
MOC General Specifications - November 1998
90506
Delineators
Unit
90507
Kilometer Post
Uint
9050701
Kilometer Post, Single-face
Unit
9050702
Kilometer Post, Double-face
Unit
90508
Retroreflectors
Unit
90509
Object Markers
Unit
9050901
Object Markers, Type 1 or 3
Unit
9050902
Object Markers, Type 2
Unit
64
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