Mep Specifications

CH C PROJECT

ACES PROPERTY LIMITED PROPOSED BUILDING (G+4+R)

ELECTRICAL SPECIFICATIONS

Prepared by

April , 2014

ACES PROPERTY LIMITED PROPOSED BUILDING (G+4+R) SPECIFICATIONS

ELEC/SPEC.16000.

SECTION

DESCRIPTION

16000 16010 16110

SCOPE AND EXTENT OF WORKS GENERAL REQUIREMENTS AND CONDITIONS CONTAINMENT SYSTEMS FOR WIRING AND CABLING CONDUITS, TRUNKING, TRAYS, LADDERS, DUCTS AND UNDER FLOOR TRUNKING LOW VOLATGE CABLES, WIRES AND ACCESSORIES DU GUIDELINES TELEPHONE AND CABLE TV SYSTEMS WIRING ACCESSORIES EARTHING SYSTEM LOW VOLTAGE AUTOMATIC POWER FACTOR CORRECTION PANEL LOW VOLTAGE ELECTRICAL SWITCHGEAR, MAIN, SUB‐MAIN AND FINAL DISTRIBUTION BOARDS, ISOLATORS AND LOAD‐BREAK SWITCHES LIGHTING FIXTURES AND ACCESSORIES LIGHTING CONTROL SYSTEMS ANOLOGUE ADDRESSABLE VOICE INTEGRATED FIRE DETECTION AND ALARM SYSTEM

16123 16124‐1 16124‐2 16141 16170 16411 16426 16510 16511 16721‐16770 16780

CENTRALLY MONITORED SELF CONTAINED EMERGENCY LIGHTING SYSTEM

16781

MASTER DIGITAL SATELLITE AND TERRRESTRIAL ANTENNAE SYSTEM CLOSED CIRCUIT TELEVISION AND VIDEO SECURITY SURVEILLANCE SYSTEM INTERCOM SYSTEM DIGITAL AUDIO INTERCOM SOLAR WATER HEATER SYSTEM VENDOR LIST

16782 16782‐1 16783

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ACES PROPERTY LIMITED PROPOSED BUILDING (G+4+R) SPECIFICATIONS

ELEC/SPEC.16000.

ELECTRICAL INSTALLATION WORKS SECTION 16000 SCOPE AND EXTENT OF WORKS 1.

SCOPE OF WORKS 1.1

1.2.

1.3. 1.4.

1.5.

1.6.

1.7.

1.8.

2.

The enclosed Specifications cover the Electrical Installation works for the project design is proposed to be “ B+G+4 Residential with Retail Building” for Rajesh Building . The Contractor shall be responsible for the supply, delivery to site, installation, commissioning and testing of the various electrical systems outlined briefly below and as described in detail in the relevant Specifications and drawings. Prior to submitting his offer, the Contractor shall be required to visit the site for familiarization with all site conditions and scope of works. The Contractor shall be responsible for preparing all workshop drawings for each electrical system and submit to the Engineer for his study, comments and subsequent approval. The Contractor shall be responsible for obtaining approvals for all workshop drawings from respective statutory authorities prior to commencing execution of any works. The Contractor shall obtain approval from the Engineer for all equipment and materials at an early date to enable placing of orders in good time. Contractor shall be responsible for applying, coordinating and obtaining/ issuing of all permits and necessary NOC’s from the local authorities (DM, DEWA, Etisalat, DU, RTA, Dubai Police, etc). The Contractor shall be responsible for coordinating with Dubai Electricity and Water Authority (DEWA) for making all necessary arrangements for provision of H.T. electricity supply to the sub-station, and thence to respective Main L.V. Electrical room for connection to the Main distribution board, MDB. All costs, charges and fees required by the statutory authorities shall be included in his offer, except the power connection charges, which shall be paid by the Client. Contractor shall be responsible to comply with Dubai Municipality and DEWA Green Building Regulations.

EXTENT OF WORKS The Electrical Installation works shall include the supply, installation, testing, connecting and putting into satisfactory and safe service the following in compliance with details in relevant drawings, Specifications, Schedules of Luminaries, Schedule of equipment and accessories, and Load Schedules for various distribution boards: 2.1.

Main L.V. ACB/MCCB Distribution Board, designated as MDB shall be form 4 Type 6, complete with kilo-watt-hour meter, ammeters, voltmeter/selector switches, cable glands, other necessary accessories etc. The MDB shall be complete with Power Factor Correcting Panel, designated as PFCP, housed in an independent enclosure, which shall not form an integral part of the MDB.

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2.2. 2.3. 2.4. 2.5.

2.6.

2.7. 2.8. 2.9.

2.10. 2.11. 2.12. 2.13. 2.14. 2.15.

2.16.

2.17.

2.18.

2.19.

ELEC/SPEC.16000.

All Sub-main L.V. MCCB Distribution Boards designated SMDBs. All Final TPN MCB Distribution Boards designated DBs. All heavy-duty isolators constructed to protection grade IP65. All L.V. cabling between MDBs and SMDBs, and between SMDBs and DBs, isolators for fire fighting and other pumps, lifts, A/C Condensing Units and other similar equipment, all in compliance with details in drawings. All L.V. cabling/wiring between MCB boards and respective outlet points associated with internal and external lighting points, exhaust fans, general purpose socket-outlets, hand dryers, isolators etc., all in strict compliance with details in drawings and load schedules for respective boards. All internal and external lighting points and respective fixtures. All Emergency and Exit lighting points and respective fixtures. All single gang, multigang and two-way lighting switches, other SP and DP switches; timer activated contactor operated multi-gang switch assembly units with manual override facility for control of external lighting and roof projection lighting circuits. All Exhaust fans. All recessed domestic type general purpose 13A single and twin switched socket outlets in offices and similar areas. All single and twin surface mounted industrial type 13A switch socket outlets to IP65 in external areas. Fused connection units for connection to water heaters, hand dryers and similar equipment. Cord outlets for connection to exhaust fans. For structured cabling voice and data system, only priority containment system comprising individual conduits to each voice and data outlet from respective Voice Data distributors, trays from main distributor to sub-main distributor, all in coordination with and to the requirements of the specialist sub-contractors who shall be responsible for supply and installation of all structured cabling equipment, voice and data socket outlets and cabling.

3 No. UPS units, UPS1 feeding SPN board DB-CT1 in ground floor Computer and Telephone Room for lighting and small power circuits; UPS2 feeding SPN board DB-CT2 in first floor Computer and Telephone Room for lighting and small power circuits; UPS3 feeding SPN board DB-SEC in ground floor Security Room for supply to socket outlets for all E.L.V. systems inclusive of outlets for CCTV Cameras, Card Access System Magnetic Locks, Security Panel, Fire Alarm Control Panels etc. High quality, high performance integrated Security System comprising CCTV and Card Access Control System complete with all necessary containment system, components and accessories deemed essential for a safe and reliable Security System. Telephone system inclusive of PABX and complete with necessary external and internal conduits with draw tapes/wires, wiring, line jack outlets, main and sub-main distribution frames, junction boxes etc. all in strict compliance with the current rules, regulations, requirements and recommendations of ETISALAT. State-of-the-art Analogue Soft Addressable Voice Integrated Fire Detection and Alarm System, all in strict compliance with the current rules, regulations, requirements and recommendations of the local Civil Defence Autority.

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ACES PROPERTY LIMITED PROPOSED BUILDING (G+4+R) SPECIFICATIONS

2.20. 2.21.

2.22. 2.23. 2.24. 2.25.

ELEC/SPEC.16000.

High quality high performance Satellite Master Antennae System for integration with the structured cabling system. High quality high performance intelligent lighting control system for control of lighting circuits in respective public areas, Libraries, Multipurpose Halls etc. Complete earthing system, inclusive of clean earthing for Telecommunication rooms. Adequate and suitably sized uPVC conduits complete with draw wires for incoming ETISALAT cables. Adequate numbers and suitably dimensioned manholes for telephone and electrical power cables. Complete and satisfactory testing of all items of equipment and accessories for each system described above.

END OF SECTION 16000

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ACES PROPERTY LIMITED PROPOSED BUILDING (G+4+R) SPECIFICATIONS

ELEC/SPEC.16010.

ELECTRICAL INSTALLATION WORKS SECTION 16010 GENERAL REQUIREMENTS AND CONDITIONS 1.

GENERAL. 1.1

1.2.

1.3.

1.4.

1.5.

1.6. 1.7.

1.8.

1.9.

1.10.

These Specifications cover the supply, delivery, storage, installation, connection, testing and commissioning of all equipment and materials required for the electrical installation works for the project, all in compliance with the General and Particular Specifications and Drawings Prior to bidding, the Contractor shall be required to visit the site to ascertain limitations or constraints that may affect his works on site. In addition the Contractor shall study the Specifications and tender design drawings in detail as no variations shall be allowed due to lack of knowledge relating to site conditions and drawings implications. The General and Particular Specifications shall be read in conjunction with the Contracts Documents and Tender drawings. In the event of any discrepancies between the drawings and the Specifications, the drawings shall be deemed correct for tendering purposes. The Contractor shall, however, be required to draw attention to such discrepancies at the time of submitting his offer. All electrical installation works shall be carried out in strict compliance with details in drawings, load schedules for distribution boards, Schedules of equipment and materials, technical Specifications of equipment and materials, and any other instructions issued by the Engineer. All electrical installation works shall conform to the best principles of modern practice and shall be carried out by fully competent tradesmen of appropriate grades to the full satisfaction of the Engineer. All equipment and materials shall be installed to guarantee satisfactory operation at specified parameters. To avoid delays and to facilitate smooth running of the works, the Contractor shall ensure that after receipt of all necessary approvals from the Engineer, prompt orders for all items of equipment and materials shall be placed. High quality brand new equipment and materials free from any flaws and defects shall be used. Any equipment and material not accepted by the Engineer shall be removed and replaced by the Contractor at his own expense. The Contractor shall ensure all equipment, accessories and components are of appropriate protection grade for installation in various areas, taking into account environmental considerations relating to dampness, sand, dust, corrosion etc. The Contractor shall be responsible for the quality of all equipment, materials, accessories and fittings proposed for installation in the project. The Contractor shall submit Quality Inspection Plan for all items for Engineer’s study and review.

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1.11.

1.12.

2.

ELEC/SPEC.16010.

All equipment shall be manufactured by reputable manufacturers of international repute with ISO 9001 accreditation. The manufacturers should have been regularly engaged in the manufacture of respective items for at least ten years, and their products have been used satisfactorily in similar projects. The Contractor shall submit original documents of origin of country of all respective equipment and materials proposed for the project. In addition, Bill of Lading of all the said items of equipment shall also be submitted.

STANDARDS AND CODES All electrical materials and equipment used in electrical installation works shall comply with the requirements of the latest edition of the relevant International Electro-Technical Commission (IEC) publications, British Standards (BS), and NFPA. All electrical installation works shall be carried out in strict compliance with current rules, regulations, requirements and recommendations of the following institutes and statutory authorities: a) b) c) d) e) f)

3.

Dubai Electricity and Water Authority (DEWA) Wiring Regulations. Wiring Regulations of the Institution of Electrical Engineers (IEE), UK, now published as BS7671:2001. IEC Regulations for Electrical Installations in Buildings, publication IEC 364. Local ETISALAT Office for all works related to Telephone and Structured Cabling Systems. Local Civil Defence Authority for all works related to Fire Detection and Alarm System. Dubai Municipality, DEWA and Green Building Regulation.

CLIMATIC CONDITIONS All electrical equipment, materials, apparatus, accessories and fittings used in the installations shall be suitable for use in the climatic conditions prevalent in Ajman as detailed below : a) b)

4.

Maximum ambient temperature : 55 degrees C (to be reviewed). Relative humidity : 95%

ELECTRICITY SUPPLY AND SERVICE CONDITIONS All electrical equipment, materials, apparatus, accessories and fittings used in the installations shall be designed and manufactured to operate safely and continuously in the electricity supply system provided by DEWA with the following characteristics: Voltage Frequency

: :

380V +/- 5%, 3 phase, 4-wire 50 Hz +/- 2%

Neutral Fault level

: :

solidly earthed, TNT system 20 MVA, supplied from a 1000 kVA transformer

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Fault duration 5.

STATUTORY APPROVALS, FEES AND INSPECTION 5.1. 5.2.

5.3.

5.4.

5.5.

5.6.

5.7. 5.8. 6.

:

ELEC/SPEC.16010.

30 MVA, supplied from a 1500 kVA transformer 1 second.

The Contractor shall coordinate with DEWA to obtain all relevant information, data and instructions pertaining to his parts of the works. The Contractor shall coordinate with DEWA to make all necessary arrangements for the supply and installation of all high-voltage equipment for connection of electricity supply for the project. The contractor shall coordinate with ETISALAT to obtain all relevant information, data and instructions pertaining to telephone, voice and data system installation works. The Contractor shall coordinate with the local Civil Defense Authority to obtain all relevant information, data and instructions pertaining to installation works for Fire Detection and Alarm system. Prior to commencement of any installation works, the Contractor shall submit specified number of copies of drawings to relevant authorities for checking, comments and approval. Any modifications or additional requirements by the relevant authority shall be brought forthwith to the attention of the Engineer for further action and compliance. To avoid unnecessary delays, the Contractor shall arrange for inspection of works by the relevant authorities on an on-going basis during the course of works. On completion of works, final approval certificates from each statutory authority shall be submitted to the Engineer for handing over to the Client. The Contractor shall pay all attendance and other charges to the relevant authorities.

CO-ORDINATION WITH OTHER TRADES AND SUPPLIERS. 6.1.

The contractor shall coordinate with the plumbing works sub-contractor to ascertain locations and routes of all water and drainage pipes to ensure sufficient and safe clearances are maintained between these and electrical services in all areas. 6.2. The ratings of isolators for water pumps, fire fighting pumps, booster pumps, A.C. Condensing Units, Extract Fans, lifts, and other electrically operated equipment have been stipulated after coordination at the design stage with the Plumbing and Mechanical Engineers. However, the Contractor shall be required to coordinate with the concerned sub-contractors and manufacturers of proposed equipment and supply and install suitable isolators of correct ratings to match requirements of equipment finally selected for installation. 6.3. The Contractor shall coordinate with the suppliers and installers of all specialist equipment inclusive of false ceilings; A.C. equipment and duct work; Fire Detection and Alarm System; Closed Circuit TV vigilance system ; Structured Cabling System for voice, data and TV Systems; P.A. system, Access Control Security System, Telephone System installation etc. to facilitate, wherever applicable, correct and satisfactory installation of containment network comprising conduits, trunking, trays etc. for points associated with the respective systems.

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ELEC/SPEC.16010.

6.4.

Layout of A.C. grills, fire alarm detectors, sound system speakers, emergency lighting luminaires, indoor and outdoor CCTV cameras, Access Conrol Security System clearances above false ceilings etc. shall be fully coordinated with other trades for proper and satisfactory siting of lighting fixtures in the false ceilings. 6.5. Prior to commencement of any works, the Contractor shall liase with all other sub-contractors for all services and submit co-ordinated drawings to the Engineer for his study, comments and final approval. 6.6. The Contractor shall include in his tender all necessary expenses, if any, or providing services to other specialist sub-contractors. 7.

TENDER DRAWINGS AND POSITIONS OF FITTINGS. 7.1.

7.2.

8.

Approximate locations of various items of electrical equipment inclusive of wiring accessories, lighting luminaires, isolators, distribution boards, panels and components of Fire Detection and Alarm system, Structured Cabling System, Telephone System, CCTV System, P.A. System, Access Control Security System etc. indicated in the drawings shall be assumed to be correct for tendering purposes only, and are intended to indicate general requirements and arrangement of aforementioned equipment and accessories. Locations of items of electrical equipment may be changed on site to comply with furniture layout and/or architectural requirements. The electrical design drawings do not intend to show architectural, structural, fabrication or installation details. For accurate dimensions refer to architectural and structural drawings. Elevations for all services shall be verified prior to commencement of any electrical installation works.

CONSTRUCTION DRAWINGS 8.1.

8.2.

8.3.

8.4.

Four sets of tender drawings for all electrical works shall be provided to the Contractor. Any necessary design modifications shall be in the form of design notes and / or sketches as directed by the Engineer. To facilitate satisfactory execution of electrical installation works and to avoid any conflict with other trades and services, the Contractor shall be responsible for preparing all relevant coordinated construction drawings. The Contractor shall submit, within thirty days of Engineer’s instructions for commencement of works, three copies of drawings indicating dimensioned details of sleeves, openings, holes, chases etc. required in the structure; piping and equipment in shafts; piping and equipment in mechanical and plant rooms and other critical areas; equipment foundations; trenches; anchors; inertia slabs etc. to be provided by others to enable him to fulfil his part of the works. Transparencies and four sets of printed copies of all coordinated construction drawings approved and stamped by all other trades shall be submitted to the Engineer.

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9.

WORKING AND “AS FITTED “ DRAWINGS AND OPERATING MAUALS 9.1.

9.2.

9.3.

9.4.

9.5.

9.6.

9.7.

10.

ELEC/SPEC.16010.

During the course of the works the contractor shall maintain a fully detailed record of all changes to the Tender Drawings as true record of actual installations. The drawings shall show the complete electrical installation works of all electrical systems within and external to the building, inclusive of the type, cross- sectional areas and runs/lengths of all L.V. cables, the precise locations of all cables which may be buried within the structure, and those sections of any external cables which are buried directly in the ground. The locations and depths of all underground cables and uPVC conduits for incoming ETISALAT cables at the various entry points shall also be clearly indicated. The Contractor shall be fully responsible for the accuracy of dimensions of all equipment with respect to space available, for accessibility of equipment for maintenance and service, and for compliance with the rules, regulations, requirements and recommendations of the statutory authorities. Preparation and submission of drawings is subject to Contractual obligations and any delay shall be subject to penalties and other remedies as determined by the Engineer. Within one month of completion of the installations, the Contractor shall provide 3 No. complete sets of the following record drawings for all above mentioned systems, as detailed below, for Engineers study, comments and final approval : i) General arrangement of all electrical services “ AS FITTED”, to scale not less than 1:100 metric. ii) Details of all items of plant and equipment including name and address of respective manufacturer, type and model, serial number, duty, rating and any other pertinent information. iii) Single line schematic drawings to a scale not less than 1:100 metric, indicating position of all distribution boards, isolators, switches, control panels etc. with relevant notes describing their functions. After obtaining approval in writing for the drawings, the Contractor shall provide one negative and two prints of each drawing together with two bound sets of all manuals and operating instructions to the Engineer for issuing these to the Client.

PERSONNEL TRAINING 10.1.

10.2.

Prior to acceptance of the works, the Contractor shall be required to train and instruct Client’s personnel in the correct use, operation and supervision of Fire Detection and Alarm System, Sound System, CCTV System and any other system installed in the building. Prior to acceptance of the works, the Contractor shall also be required to demonstrate and explain to the client’s personnel the correct operation of all items of switchgear and the starting, running and stopping of all item of mechanical plant installed in the building.

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10.3. 10.4.

11.

ALTERNATIVE EQUIPMENT AND MATERIALS 11.1.

11.2.

11.3.

12.

ELEC/SPEC.16010.

The cost of the training programme shall be deemed to be included in the Contract price. The supplier shall be required to provide operating manuals to supplement the training courses.

As a guide to the quality of workmanship required, names of three manufacturers together with technical details and, wherever applicable, catalogue number shall generally be specified for each item in the Schedule of Luminaires, Equipment and Materials. Client’s list of recommended and preferred manufacturers for lighting fixtures, wiring accessories, switchgear, cables, busbar ducts and other relevant equipment, materials and System shall be provided. Any alternative offered shall be equivalent or better in quality than those specified, and shall be approved in writing by the Engineer prior to placing order or installing in the project.

INSPECTION, TESTING AND COMMISSIONING 12.1.

12.2.

12.3

12.4. 12.5. 12.6.

12.7. 12.8.

The Contractor shall provide necessary assistance and facilities to the Engineer to inspect all materials and equipment at works on site during the progress of the works. The Contractor shall provide, free of charge, all necessary labour, materials, testing equipment and measuring instruments which may be required to carry out the various tests on the installations in compliance with the recommendations of the relevant statutory authorities and as directed by the Engineer. The Contractor shall give fourteen days notice before the installation is ready for inspection and testing. Subject to the Engineer’s agreement, the Contractor may proceed with the tests and forward three certified copies of the results obtained to the Engineer. If the results are found satisfactory in every respect, the installation shall be accepted, but such acceptance shall be without any prejudice to any claims in respect of any defects which may develop during the guarantee period for maintenance. To facilitate progress of works it may be necessary to test sections of works separately. Tests shall be repeated, within reasonable time and without extra charges, on any sections of the installations which have failed the tests. In case where sections of works are located above false ceilings, the Contractor shall notify the Engineer that the works are ready for inspection and testing. No enclosures shall be installed until inspection and testing have been completed. The Contractor shall be responsible for the correctness of electrical connections to all equipment prior to switching on the supply for their operation. After connection of electricity supply, the Contractor shall commission all sections of the installations to demonstrate to the Engineer the satisfactory and correct operation of all items of installations.

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ACES PROPERTY LIMITED PROPOSED BUILDING (G+4+R) SPECIFICATIONS

13.

ELEC/SPEC.16010.

ELECTRICAL TESTS. 13.1. On completion of the installations and prior to its being made “alive” for service, the Contractor shall carry out the recommended electrical tests, on all sections of the works in the presence of the Engineer and the representative of the Federal Electricity and Water Authority. 13.2. All tests shall be carried out in strict compliance with the requirements and recommendations of the 16th Edition of the IEE Wiring Regulations (BS7671:2001) and the current Wiring Regulations of DEWA. 13.2. Electrical Tests shall include the following :

i) ii) iii) iv) v) vi) vii) 14.

Insulation resistance tests between conductors, and between conductors and earth. Earth continuity tests. Earth resistance measurements. Verification of polarity. Ring circuit continuity tests. Operational tests on all Residual Current Circuit Breakers. Operational tests on all equipment and relays.

MAINTENANCE AND SERVICING. The Contractor shall provide maintenance, servicing and replacement of all defective parts during the maintenance guarantee period from the date of handing over the project.

15.

SAMPLES. The Contractor shall submit samples of all materials, fittings and fixtures to the Engineer and obtain his written approval prior to placing order or using or installing these in any part of the works.

16.

SPARE PARTS. In accordance with respective manufacturer’s recommendations, the contractor shall provide, as part of the Contract, all special tools required for equipment maintenance together with list of spare parts deemed essential for two years, together with individual prices of all items of spares.

17.

NOTICES. In each electrical room the following Notices relating to important instructions and information shall be provided and hung in all electrical rooms : i) The instructions for the treatment of electric shock, in Arabic and English languages, mounted on a steel frame and screwed to the wall.

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ELEC/SPEC.16010.

ii) A schematic diagram of the switchgear located in the room together with a complete single line schematic drawing of the complete electrical distribution system, framed and mounted on the wall. 18.

LABELS AND IDENTIFICATION MARKS. All equipment and apparatus shall be permanently marked with the manufacturer’s name, and shall also be identified by engraved labels to indicate the services controlled or to identify individual apparatus or equipment. Labels shall be securely fixed to the front cover of equipment in an approved manner.

19.

NOTES FOR ELECTRICAL INSTALLATION WORKS. 19.1. 19.2. 19.3. 19.4. 19.5.

19.6. 19.7. 19.8.

19.9.

Each Final MCB Distribution Board shall be sectionalized as indicated in respective load schedules in compliance with DEWA’s requirements. Multigang lighting control switches incorporating more than one phase shall be equipped with phase barriers. Lighting control switches shall be adequately rated to control respective inductive loads. Each hand dryer or hair dryer shall be supplied via a connection unit and shall be controlled by a 20A DP switch with neon indicator. Final locations of all wiring accessories shall be determined in coordination with Architect’s instructions and in compliance with final furniture and equipment layouts. All wiring shall be carried out in strict compliance with details in load schedules of respective final MCB distribution boards. Voltage drops to the farthest point of electrical supply shall not exceed 2.5% of DEWA’s declared nominal voltage. All isolators shall be designed for heavy-duty service and shall comply with degree of protection IP55 for internal and IP65 for external installations. All isolators supplying motoring circuits shall conform with the requirements of type AC23. Where cables, bus-ducts, cable trays, trunking, ladders, conduits etc. pass through fire rated floors, walk or roof, the Contractor shall provide internal and external fire sealant. For non-fire rated locations, the silicon sealants shall be used.

END OF SECTION 16010

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ELEC/SPEC.16110.

ELECTRICAL INSTALLATION WORKS SECTION - 16110 CONTAINMENT SYSTEMS FOR WIRING AND CABLING CONDUITS, TRUNKING, TRAYS, LADDERS, DUCTS AND UNDER FLOOR TRUNKING

The Contractor shall supply and install a complete network of containment system comprising conduits, underfloor trunking, cable trunking, trays, ladders and duct works in various area of the premises for satisfactory, correct, orderly and segregated distribution of wiring and cabling for electrical power, voice, data and other ELV services. 1.

GENERAL GUIDELINES 1.1.

1.2.

1.3.

1.4.

1.5.

2.

All conduits, trunking, trays etc. shall be arranged in a neat and inconspicuous manner, and each system shall be completely assembled, inspected and tested prior to cables/wiring being drawn in them. All works shall be carried out in strict compliance with the recommendations of the manufacturer and with guidelines and recommendations in BS 7671:2001, which incorporates the I.E.E. Wiring Regulations. Notional routes of cables and other related instructions shall be indicated in the drawings. However, prior to commencement of any parts of the works, the Contractor shall be required to submit, for Engineer’s study and approval, two prints of comprehensive working drawings indicating proposed routes of conduits, trays, trunking, trays, ladders and ducts together with all relevant dimensional details. All containment systems shall be supported and secured to the building fabric in a manner to ensure these are fully protected and have no load or stresses other than the loads of wiring and cabling they are designed to carry. All accessories, fittings and components shall be of same manufacture as for respective items of containment system.

INSTRUCTIONS AND GUIDELINES FOR CONDUIT INSTALLATIONS 2.1. 2.2.

No conduits of diameter smaller than 20 mm shall be used. All conduits, throughout the installations, shall be of sufficiently large crosssectional area and shall be arranged, with sufficient number of strategically located draw-in boxes, to allow easy drawing of any or all the cables. Care shall be exercised to ensure that the number of wires drawn in a conduit, relative to its diameter, does not exceed the number stipulated in the Wiring

File: ELECSPEC16110.doc

Containment Systems for Wiring and Cabling Conduits , Trunking, Trays, Ladders

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2.3.

2.4.

2.5.

2.6.

2.7.

2.8.

2.9.

2.10. 2.11.

2.12.

ELEC/SPEC.16110.

Regulations BS 7671:2001. Should these differ in any way with the regulations of the Dubai Electricity Supply Authority, the requirements of the latter shall be adhered to. All conduits shall be run in a manner to facilitate self-draining to outlet boxes. Each length of conduit shall be cleaned and dried with the help of a swab drawn through its length, and all boxes shall be cleaned to remove moisture prior to installing cables. Conduit bends shall be made with the bore of the tube remaining full and free throughout and all conduits shall be perfectly smooth inside and outside, and free from any burrs and sharp corners. Bends shall be made without heating the conduits and by using approved type of bending machine or bending block to give results consistent with the best grade of craftsmanship. No more than two right angle bends shall be permitted between draw-in boxes. No diagonal runs of conduits shall be allowed on the walls of structure. Conduits concealed in the ceiling slab shall run parallel to walls and beams, and those concealed in walls shall be run vertical and/or horizontal. All conduits cast in concrete or laid in floor screeds shall be effectively secured, positioned and protected against mechanical damage, ingress of concrete etc. Allowance shall be made for thermal expansion and contraction of straight runs of conduits. Where conduits run parallel to one another, the distance between adjacent conduits shall not be less than 15 mm. At junction of multi-run of conduits, rectangular adaptor boxes having internal dimensions not less than 150 x 100 x 50 mm, shall be used. Maximum of 3 Nos. 20 mm diameter and a maximum of 2 nos. 20 mm diameter conduits shall enter the longer and shorter sides of the boxes respectively. For more or larger sized conduits, larger boxes of appropriate sizes shall be used. All conduits embedded in walls shall be fully recessed to permit a minimum thickness of 15 mm plaster or other finish to be obtained. Ceiling boxes for lighting fixtures shall be brought flush with the ceiling plaster or finish. The mounting boxes for flush type switches, socket outlets etc. shall be recessed squaring into the wall structure until the front edge is level with the finished surface of the plaster or other finish. Conduits shall be terminated in accessories, distribution boards etc. either by being screwed into the tapped spouts or holes where such are provided, or by locking into clearance holes by means of couplers and smooth bore hexagonal male bushes. Connections between the conduits and box with clearance holes shall, in addition, be filled with a brass compression washer between the box and the coupling with no exposed thread. Under no circumstances holes shall be drilled in any structural steel or prestressed concrete without the prior written approval of the Engineer. Adaptable switch and socket-outlet boxes in 1-gang and 2-gang configuration shall be constructed of pre-coated galvanized steel complying with the requirements of BS 4662:1970. These shall be complete with adjustable lugs, brass earth terminals, oval knock-outs, rubber grommets etc. Separate and dedicated conduits shall be installed for lighting, small power, telephone, structured cabling and other ELV systems.

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ACES PROPERTY LIMITED PROPOSED BUILDING (G+4+R) SPECIFICATIONS

2.13.

2.14.

2.15.

3.

PVC CONDUITS AND ACCESSORIES 3.1.

All PVC conduits shall be high-impact, rigid and heavy gauge complying with the requirements of BS EN 50086-1:1994. Fittings and accessories shall be of same manufacture as the conduits. Minimum thickness of walls corresponding to respective outside diameter of conduits shall be as follows : OUTSIDE DIAMETER

3.2.

3.3.

3.4. 3.5. 3.6. 3.7.

4.

ELEC/SPEC.16110.

The Contractor shall be required to submit calculations to justify the proposed dimensions of the containment system in compliance with the space factors recommended by IEE Wiring Regulations and by DEWA. In general, space factor for conduits shall be 0.45 and space factor for trunking and ladders shall be 0.4. Conduits installed on surface of walls and ceilings shall be supported along their entire runs by saddlers that shall be spaced in compliance with the recommendations of the manufacturer. Conduits passing through water-proof membranes shall be equipped with 50 mm thick collars of appropriate thickness welded all around at membrane level, with the membrane pressed over the collars. After installation of conduits, the sleeves shall be filled with approved water tight sealant.

WALL THICKNESS

(mm) (mm) 20 1.8 25 1.9 32 2.5 38 2.5 All conduits shall be unthreaded, slip-fit and push-on type. Unless otherwise specified only plain couplers shall be used. All joints shall be made with weather-proof adhesive as recommended by the manufacturer. Terminations in metal equipment and accessories with a tapped entry shall employ flanged couplings locked to the metal case with smooth bore brass/PVC bushes. At all expansion joints in the structure, expansion couplers shall be installed. Draw-in boxes and switch mounting boxes shall be made of PVC and shall be equipped with earth terminals. Wherever necessary, approved type of flexible conduits and adaptors maybe used. Spacing of conduits runs from other services shall be the following minimum values: i) Cold water : 50 mm ii) Hot water : 250 mm iii) Air ducts : 20 mm

GALVANIZED STEEL CONDUITS AND ACCESSORIES. 4.1.

All metal conduits shall be heavy gauge welded screwed steel tubing complying with the requirements of BS 4568:PART 1:1970, and shall be heavily galvanized both inside and outside throughout their entire lengths.

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ACES PROPERTY LIMITED PROPOSED BUILDING (G+4+R) SPECIFICATIONS

4.2.

4.3.

4.4.

4.5.

4.6.

4.7. 4.8.

4.9. 4.10.

5.

ELEC/SPEC.16110.

All conduit fittings and accessories shall be finished to the same classification of protection as for the conduits. All conduits shall be fixed in approved manner by means of crampets, saddles, spacer bar saddles, cast distance saddles, cadmium plated steel screws, bolts, nuts etc. all complying with the requirements of BS 4568: PART 2:1970. All conduits shall be threaded so that the ends of the conduits butt close together in conduit coupling. Lock nuts shall be thoroughly coated with red lead after installation. All conduits shall be mechanically and electrically continuous and shall be effectively bonded and earthed. Earth connections and bonding to conduits shall be by means of copper tape or copper earth wire and earthing clamps complying with BS 951:1999. Where the conduit makes contact with structural steel, an efficient and permanent bond shall be made between the conduit and metal work. All conduit boxes shall be constructed of malleable iron or pressed steel and shall have the same classification for protection as for the conduit. Where they do not serve as outlets, they shall be fitted with lids secured with brass screws. Earthing terminals shall be provided in all outlet boxes. On completion of installations, the conduits shall be checked and all imperfections shall be made good. Rust, minor damage and exposed threads in conduit runs installed on the surfaces shall be painted with two coats of Zinc Chromate paint and finished with approved air drying metallic paint. Conduits concealed in the building structure shall be painted with two coats of air drying red lead paint. The paints shall be applied immediately after the completion of conduit installation. Wherever there is likely to be excessive condensation, boxes shall be filled with suitable plastic compound approved by the Engineer. At all expansion joints in the structure an approved type of flexible sliding connection shall be provided in every run of conduit to take up any expansion or contraction of the conduits under service conditions. Bonding across the joint shall be maintained by separate circuit protective conductor. All conduit runs shall have adequate clearances between them and all other service lines. To facilitate movement between cabling and isolators for equipment, flexible conduit tubing and adaptors complying with the requirements of BS 7311:1952 shall generally be used for housing the cables. For such connections approved type of solid bronze adaptors with standard thread for flexible conduits shall be used.

PVC TRUNKING INSTALLATIONS 5.1.

5.2.

Rigid heavy gauge PVC trunking of approved manufacture may be used in lieu of multiple conduit runs. The trunking shall be rigidly supported along their entire lengths at intervals not exceeding 1.25 m. All fixings shall be carried out with cadmium plated steel screws. All PVC trunking, lids, fittings and accessories shall comply with the requirements of BS 4678-4:1982.

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ACES PROPERTY LIMITED PROPOSED BUILDING (G+4+R) SPECIFICATIONS

5.3. 5.4. 5.5. 5.6.

6.

ELEC/SPEC.16110.

The installation of PVC trunking shall be carried out in strict compliance with the recommendations of the manufacturer. Allowances shall be made for expansion of the trunking by using washers at all fixing points. Separate circuit protective conductors shall be used throughout the system for earthing purposes. All jointing shall be carried out using vinyl cement glue in compliance with manufacturer’s recommendations.

GALVANIZED STEEL TRUNKING INSTALLATIONS 6.1.

6.2.

6.3.

6.4.

6.5.

6.6.

6.7.

6.8.

6.9.

6.10.

Heavy gauge galvanized sheet steel trunking of approved manufacture and of minimum thickness 1.6 mm may be used in lieu of multiple conduit runs. The trunking shall be rigidly supported along their entire lengths at intervals not exceeding 1 m. On horizontal runs the lid or cover plates shall always face upwards. All galvanized steel surface trunking, fittings, bends, tees, cable retainers, cable separators, reducers, supports and other accessories shall comply with the requirements of BS 4678-1:1971. These shall be rust-proof and shall be complete with external fixing lugs. Site fabricated accessories shall not be allowed under any circumstances. The lids or access plates shall be removable in easily-handled sections over the entire length of straight runs of trunkings. Overlapping collar sections or other similar approved linking arrangement shall be provided at the junction of adjacent sections of the trunking. All fittings and accessories shall be installed to ensure there are no sharp edges, projecting screw threads or similar points within the trunking that may result in damage to the cables. All under-floor steel trunking shall comply with the requirements of BS 4678-2:1973. These shall be rust-proof and shall be complete with external fixing lugs. Thickness of steel sheets for different sizes shall be as follows : i) Sizes up to and including 50 x 50 mm 20 SWG ii) Sizes from 50 x 50 mm to 75 x 75 mm 18 SWG iii) Sizes from 75 x 75 mm to 225 x 150 mm 16 SWG Lengths of trunking shall be efficiently bonded to each other using strip copper links not less than 12 mm x 2 mm and fixed with brass nuts and bolts and serrated washers. All lengths shall be connected by “Fish Plate” connectors. All trunking shall be supplied with cable retaining straps at intervals of 1 m. Trunking run horizontally shall be provided with cable separators with insulated pins at 1 m intervals. Trunking run vertically shall be provided with a cable support unit with insulated pins at 3 m intervals. Where trunking passes through floors and walls, fibreglass or an approved ceramic fibre packing shall be fixed into trunking to form effective fire barrier. Under no circumstances cutting and bending of trunking to form flanges and attachments shall be permitted.

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ACES PROPERTY LIMITED PROPOSED BUILDING (G+4+R) SPECIFICATIONS

7.

CABLE TRAYS 7.1. 7.2. 7.3.

7.4. 7.5. 7.6. 7.7.

7.8. 8.

ELEC/SPEC.16110.

All cable trays shall be constructed of hot dip galvanized and perforated sheet steel complying with the requirements of BS 1449:1.1:1991. Cables trays shall be supplied in nominal 2.4 m lengths and shall be of the return flange type. Trays up to but not including 150 mm width shall be of thickness 20 SWG. Tray of width 150 mm to 375 mm shall be of thickness 16 mm SWG. Trays of width 400 mm to 600 mm shall be of thickness 14 SWG. Sections of trays shall be jointed using 6 mm diameter mushroom-headed safety bolts and nuts complying with the requirements of BS 1449. Adequate copper earthing strips shall be fitted at every joint. Holes cut in trays for passage of cables shall be suitably bushed. Cables shall generally be fixed to and supported by perforated galvanized sheet steel trays either wall mounted or suspended and supported from ceilings by sturdy galvanized iron brackets. Cables shall be clipped to trays by nylon or plastic cable ties. Plastic or stainless steel trays shall be used in high corrosion areas.

CABLE LADDERS 8.1.

8.2.

8.3. 8.4.

8.5. 8.6.

8.7.

8.8. 8.9.

8.10.

All cable support ladders shall be manufactured from pre-galvanized steel sheet, of minimum thickness 2 mm, complying with the requirements of BS 449-2:1969. Ladders shall be hot-dip galvanized to comply with the requirements of BS 729:1971, and shall be suitable for installation in humid conditions prevailing in the U.A.E. The rungs of ladders shall be supported on either ends by hexagonal profiled steel sheet channels. In both horizontal and vertical runs the ladders shall be firmly secured to walls or suspended from ceilings by brackets to ensure they are able to withstand the weight of cables. Where ladders are mounted on walls, a minimum distance of 25 mm shall be maintained between walls and cable surfaces. Where ladders are run horizontally supported by cantilevers or other devices, the spacing of the latter shall be in compliance with manufacturer’s recommendations. The width of ladders shall be adequate to ensure that the minimum spacing between surfaces of adjacent cables shall be minimum the diameter of the larger cable. The ladders shall be connected to earth and electrical continuity shall be maintained throughout their entire lengths. The installation shall be complete with all accessories inclusive of necessary joints, coupling, bends, support brackets, wall and ceiling plates, mounting rails, take off hooks etc., all manufactured by the manufacturer of the ladders. For aesthetic reasons, factory fabricated covers of suitable dimensions shall be fixed below horizontally run ladders, with minimum 30 mm spacing between cable surfaces and covers, throughout their routes, particularly in open areas like garages.

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ACES PROPERTY LIMITED PROPOSED BUILDING (G+4+R) SPECIFICATIONS

9.

ELEC/SPEC.16110.

UNDERFLOOR DISTRIBUTION SYSTEMS 9.1.

9.2.

9.3. 9.4.

9.5.

9.6.

9.7.

Wherever required and indicated in drawings, the Contractor shall supply and install one of the following underfloor trunking/ducting cable distribution systems, which shall be complete with all essential components and accessories: i) Under floor trunking/ducting laid in screed. ii) Under floor trunking/ducting cast in-situ into the structural slab. iii) Flush floor cable trunking/ducting. The selected system shall comprise: i) High-quality corrosion-resistant trunking/ducting manufactured from hot-dipped zinc coated low carbon sheet steel complying with the requirements of BS EN 10142:2000, or uPVC trunking/ducting complying with the requirements of BS 4678-4: 1982. ii) Robustly designed high-pressure, load-bearing, corrosion-resistant die-cast zinc alloy floor service and junction boxes in compliance with the current EN Standards. iii) Electrical power, voice, data and video socket outlets, complete with wiring, cabling and all necessary accessories. To achieve high degree of flexibility, the layout of the trunking system shall be based on a grid pattern. Galvanized steel ducts may be of single compartment or of multiple compartment type with metallic segregation between power and other ELV cables. Alternatively, single uPVC ducts may be used for providing insulated enclosures for the different services. All installation works shall be carried out by skilled and experienced personnel in strict compliance with manufacturer’s installation guidelines and recommendations, and in close co-ordination with the Main Civil Contractor. Prior to placing order for equipment and materials and prior to commencing any installation works, the Contractor shall submit, for Engineer’s study and written approval, manufacturer’s installation instructions, schedule of materials and detailed workshop drawings showing layout of trunking, floor service outlet and junction boxes. For Inscreed systems, the recommended dimensions of service outlet boxes and junction boxes shall be 300 x 300 x 75-90 mm. The boxes shall have provisions for access of ducting from all four sides, and all unused entries shall be plugged with detachable side blanks. The covers of boxes shall be designed with 6 mm recess to receive tiles, carpets etc. The service boxes shall be equipped with suitable hinges designed to enable the trap cover to open through 180 degrees and to give free access at all times to power, voice and data outlets. All boxes shall be adjustable in height independently of the ducting system to account for the difference in floor thickness. Adequate measures shall be provided to ensure protection of all emerging cables against damage. All boxes and covers shall be equipped with waterproof gaskets and circuit protective conductors.

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ACES PROPERTY LIMITED PROPOSED BUILDING (G+4+R) 9.8.

SPECIFICATIONS

ELEC/SPEC.16110.

For Raised floor systems, the trunking shall comprise of triple compartment rectangular steel structure designed to serve as main feeder for distribution of power, voice and data cables. The recommended depth of the trunking shall be 38 mm and it shall be complete with covers, compartment segregators and earthing continuity studs for each length. The thickness of the trunking, segregators and junction boxes shall not be less than 1.2 mm. Service boxes shall be constructed from galvanized sheet steel and shall be complete with polyamide trap frame with a carpet trim to cover carpet edges. The traps shall be designed to accommodate 7 mm thick carpet.

SPECIAL REQUIREMENTS AND INSTRUCTIONS The Contractor shall liase with the specialist sub-contractors for CCTV and ACCESS CONTROL SECURITY Systems, FIRE DETECTION and VOICE ALARM SYSTEM, and STRUCTURED CABLING SYSTEM and provide all containment systems in strict compliance with their respective requirements.

END OF SECTION 16110

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ACES PROPERTY LIMITED PROPOSED BUILDING (G+4+R) SPECIFICATIONS

ELEC/SPEC.16123.

ELECTRICAL INSTALLATION WORKS SECTION - 16123 LOW VOLATGE CABLES, WIRES AND ACCESSORIES The contractor shall supply, install, test and connect all cables and wires, commencing from the Main Distribution Board, designated MDB, to sub-main Distribution Boards, designated SMDB, and thence final sub-circuit MCB Distribution boards, designated DB, to isolators for water and fire fighting pumps, lifts, A/C condensing units etc., all in compliance with these Specifications and details in single line power distribution schematic drawing and respective load schedules for various boards. 1.

GENERAL. 1.1. 1.2.

1.3.

1.4.

1.5.

1.6. 1.7.

2.

Unless specified otherwise, copper conductors of 600/100 V insulation grade shall be used for all cables. All cables shall be adequately protected in finishes. No joints shall be permitted in cable runs between any two points unless lengths involved are longer than standard manufactured lengths. The joints, if any, and their positions shall be approved by the Engineer. Cable lugs, terminals and sweating sockets, all manufactured in strict compliance with the requirements of BS 91:1998, including latest amendments, shall be of correct bores appropriate to the sizes of cables to be connected. The bore shall be of adequate diameter to accommodate all strands of cable’s core as filling-in of surplus space with solder shall not be permitted. All soft solder used in cable installation shall comply with the requirements of BS 219:1977 Grade E or F for tinning and Grade H for wiped joints. In general, routes of various cables shall be indicated in the cable routes drawing for tendering purposes only. The final routing shall, however, be approved by the Engineer before any installation is undertaken. All works associated with installation of cables shall include jointing material, cable supports, cleats, brackets, perforated cable trays, ladders etc. together with all necessary accessories. L.V. cables from transformer to MDB shall be supplied and installed by the Dubai Electricity and Water Authority. Without prior approval of the Engineer, the Contractor shall neither drill any steelworks nor weld any part, component or device to the steelworks to provide support to the cables.

INSTALLATION OF CABLES. 2.1.

2.2.

In general, cables from MDB to SMDBs and from SMDBs to Final MCB distribution boards, isolators etc. shall be drawn in appropriate size uPVC conduits, trunking or ducts cast in concrete floors, trenches, or run on perforated sheet steel cable trays/ladders along routes to be finalized on site. External cables laid direct in ground shall be drawn in suitable and appropriate sized uPVC conduits when crossing roads, footpaths, trenches

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ACES PROPERTY LIMITED PROPOSED BUILDING (G+4+R) SPECIFICATIONS

2.3.

2.4.

2.5.

2.6.

2.7.

3.

ELEC/SPEC.16123.

etc. The diameter of uPVC pipes shall generally be between 100 mm to 150 mm. Final sub-circuit wiring shall be drawn in conduits or trunking. In general, the installations shall be concealed within the building fabric. However, in general service areas, workshop, plant rooms, main electrical room etc., the installation may be surface mounted. In all horizontal and vertical runs of cables along walls, beams, columns, service ducts, air-wells etc., all cables shall be supported by “Claw” type cleats or by ladders in compliance with recommendations in BS 7671:2001. For vertical runs, the spacing between adjacent cables shall be minimum twice the diameter of the larger cable. The spacing between wall and cables shall be minimum 25 mm. Bends in cables shall be properly supported and shall be of the maximum possible radius in the space available. The internal radius of every bend shall not be less than the recommended value in BS 7671:2001. Prior to commencing installation works, the Contractor shall submit, for Engineer’s study and approval, the proposed method of installation of cables in each area. The submission shall be complete with working drawings with all details and dimensions for ducts, openings, chases, trenches etc. and supports for cables. The Contractor shall provide numbered brass or plastic discs at each end of every cable run for easy identification of cables.

CROSS-LINKED POLYETHYLENE (XLPE) INSULATED COPPER CABLES 3.1.

3.2.

3.3.

3.4. 3.5.

3.6.

All thermosetting cables specified shall be of 600/1000 V insulation grade conforming to the requirements of BS 5467:1997, including latest amendments. The Conductors shall be stranded and of plain annealed high-conductivity electrical copper complying with the requirements of BS 6360:1991, IEC 228. All 4-core cables specified shall have the conductors insulated by XLPE compound, and the core insulation shall be colored Red, Yellow, Blue and Black for identification. The bedding for the four cores shall be PVC compound over which a single layer of galvanized steel wire shall be provided as armour. The final serving over the armour shall be extruded PVC sheath of black colour. PVC compound used for bedding and sheath shall comply with the requirements of BS 6746:1990. XLPE insulated cables with low emission of smoke and corrosive gases under fire conditions shall comply with the requirements of B.S. 6724:1997 for armoured cables and B.S. 721:1998 for non-armoured cables. XLPE insulated 300/500 V multicore cables with limited circuit integrity under fire conditions shall comply with the requirements of B.S. 7629:1993.

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4.

POLYVINYL CHLORIDE (PVC) INSULATED ARMOURED AND NONARMOURED COPPER CABLES : 4.1.

4.2.

4.3.

5.

5.2.

All single and multicore PVC insulated PVC sheathed non-armoured cables of insulation grade 450/750 V with copper conductors shall comply with the requirements of BS 6004 : 2000. Particulars relating to specifications of copper conductors, PVC compound etc. shall be the same as for those described for XLPE cables under Item 6.3 above.

FLEXIBLE CORDS AND CABLES 6.1. 6.2. 6.3.

6.4.

7.

All PVC insulated, single wire armoured/non-armoured PVC sheathed multicore cables with stranded copper conductors shall conform to the requirements of BS 6346: 1997, including latest amendments. Particulars related to specification of copper conductors, core colour codes, bedding, sheath etc. shall be the same as for those described for XLPE cables under Item 6.3 above. PVC compound used for insulation, bedding and sheath shall comply with the requirements of BS 6746:1990.

PVC INSULATED PVC SHEATHED NON-ARMOURED COPPER CABLES. 5.1.

6.

ELEC/SPEC.16123.

All insulated flexible cords and cables shall be of 300/500 V grade complying with the requirements of BS 6500:2000. All insulated flexible cords and cables for use in high temperature zones shall comply with requirements of B.S. 6141:1991. Final connections to luminaires and pendants shall employ cables suitable for continuous temperature of 150 deg.C. The cables shall have nickel-plated conductors and shall be double fibre glass wrapped, braided and silicone varnished. Final connections to heating equipment, and where otherwise subjected to heat, shall be silicone rubber insulated multicore cables suitable for continuous temperature of 150 deg. C.

FIRE ALARM AND EMERGENCY LIGHTING CABLES. Thermosetting insulated flexible cords and cables shall be of 300/500 V grade complying with the requirements of BS 7629: 1993 and BS 6387:1994 Category CWZ. These cables shall be designed for reduced flame propagation, for low smoke and corrosive gas emission, and shall be surge, moisture, abrasion and damage resistant.

8.

RUBBER INSULATED CABLES Rubber insulated cables for electrical power and lighting shall comply with the requirements of BS 6007:2000.

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ACES PROPERTY LIMITED PROPOSED BUILDING (G+4+R) 9.

SPECIFICATIONS

ELEC/SPEC.16123.

CO-AXIAL CABLES. Low-loss co-axial cables conforming to the requirements of BS: 5425:1986 shall be used for Satellite/Terrestrial Master TV antennae system.

10.

MINERAL INSULATED METAL SHEATHED COPPER CABLES. 10.1.

10.2. 10.3.

11.

CABLE TERMINATIONS. 11.1.

11.2. 11.3.

12.

Mineral insulated copper sheathed copper conductor cables with rated voltage not exceeding 750V, with or without an overall high-grade PVC sheath, shall conform to the requirements of BS 6207-1:1995. All terminations for mineral insulated cables shall comply with the requirements of BS 6207-2:1995. All works shall be carried out in strict compliance with the manufacturer’s recommendations and in compliance with BS 6207-3:1995. The Contractor shall ensure that all installation works shall be carried out by qualified and specialist personnel who shall have received an approved course of instructions in the termination and installations of mineral insulated cables.

All cables shall terminate in glands recommended by the cable manufacturer. An earth tag shall be provided to facilitate fitting of earth bonds to the frames of equipment. A PVC shroud shall be fitted over each gland. All terminations shall be carried out using a system of compression jointing as recommended by the cable manufacturer. Special protective bushes shall be used at points where cables pass through metal surface such as distribution boards and trunking.

BINDING AND IDENTIFICATION SLEEVES Binding and identification sleeves for use on electric cables and wires shall comply with the requirements of BS 3858:1992.

END OF SECTION 16123

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INTRODUCTION This document contains du’s guidelines for the design, installation and commissioning of building infrastructure for supporting telecommunications services in the UAE. The document is to help building developers deliver high quality, future proof facilities that comply with du’s Fibre technology (FTTX) network standards. To ensure this compliance du requires building developers to go through a ‘No Objection Certificate’ (NOC) process, to submit to sites inspections and to provide material samples for testing. Please contact du for more details about the NOC process. The guidance in this document is based on international standards and du’s extensive experience in offering telecommunications services. du always advises its clients to use qualified and certified professionals in all aspects of telecommunication infrastructure design, installation and commissioning. It is recommended to engage with du at an early stage in any development so that process and design issues can be explained. du welcomes questions from developers so that it can always offer the best advice and information. It is important to note that if a building developer or tenant has special needs or enhanced requirements that may require modifications to these guidelines du must be consulted at the design stage. In exceptional cases du may need to increase the requirements specified in this document to be able to offer service. This document covers the following building types: • • • • • • •

Single villas and villa complexes Residential towers and groups of residential towers Commercial towers and groups of commercial towers Shopping malls Group of shops or retails outlets Hospital, hotels and other bulk service applications Warehouses and sheds

The document is structured so as to provide clear sections on all aspects of the infrastructure • • • • •

Telecommunication spaces Pathways Electro-Mechanical Cables Duct entry

All telecom spaces, pathways, ducts and cabling system specified in this document are for the exclusive use of du.

Emirates Integrated Telecommunications Company PJSC (EITC) Building infrastructure standards – V4

The contents of this document are subject to revision without notice due to continued progress in methodology, design and manufacturing. There are separate documents that cover developing outside plant (OSP) for master plans. Please contact du if you require more information on such cases.

July 2008 www.du.ae Copy right © Emirates Integrated Telecommunications Company PJSC (EITC)

Building infrastructure standards – V4

-1-

www.du.ae

TELECOMMUNICATION SPACES

and pathways. This could involve the installation of covers to cable trays; if this is the case these covers must be removable to allow for the installation of additional cables.

General specifications

The walls, floor, and ceiling of telecom rooms must be finished so as to minimize dust and static electricity. Walls and ceilings shall receive primer and finish coat of light colour paint.

A number of telecom rooms will be required in a building depending on the characteristics of the building. The following room types are required and the details of these rooms are included in the text below and summarised in Appendix 1. • • • •

In order to move equipment into and out of telecom rooms no access from outside of the building to these rooms should be less than 900mm x 2100mm (WxH) A telephone socket must be provided in each area of the telecom rooms wired to the building telephone system.

Main telecom room Mobile-service room Roof-top mobile-service room Floor telecom closet

Safety and other considerations

The height measurements specified are the minimum finished clearance after taking into account allowances for raised floors, overhead cable trays and any other obstructions. In the case that overhead trays are used a minimum headroom access of 300mm is required above the tray.

All telecom rooms must comply with all municipality and national authority standards and regulations; such as those issued by civil defence and utility companies. Notwithstanding this, it is expected that following will be provided:

In multi-story buildings the telecom rooms should be vertical aligned and linked by a shared containment system. This containment system must not reduce the minimum requested space.

•

All telecom spaces should be fitted with smoke detectors connected to the building management system.

All telecom rooms must be dedicated to the use of du. The rooms must be easily accessible to du personnel 24 hours a day and secured from unauthorised entry.

•

All telecom spaces should be fitted with normal and emergency lighting.

•

All containment openings to telecom spaces must be sealed with a regulation fire retardant material.

•

All doors to telecom rooms must be of solid wood core or steel construction, fire retardant with a minimum rating of 2 hours. All doors to telecom rooms must be outward opening with an automatic door closer system fitted on the hinged edge.

•

All doors to telecom rooms must be labelled. Details of the labeling scheme are given in Appendix 2.

•

The room must free from contaminants and pollutants as defined in Appendix 3.

•

All telecom rooms should have basic fire fighting provision of two handheld CO2 cylinder type extinguishers.

Telecom rooms must not be in close proximity to any sources of the following: • • • • • •

Heat Moisture Corrosive atmospheric or environmental conditions High voltages, Radio frequency interference (RFI) Electro-magnetic interference (EMI)

The rooms must not be directly beneath or next to wet areas such as: • • • •

Showers Washrooms Swimming pools Garbage areas

Temperature and humidity

If for any reason it is proposed that any part of a telecom room will be located below the water table then this must be raised at the design stage. This situation will require a floor drain fitted with an automatic submersible pump to counter any risk of water ingress. The rooms should be clean and free from any items not directly related to the specifications in this document such as: • • • • • •

To enable the building developer to design the air conditioning system the maximum heat dissipation of the equipment in the various room types is given in Appendix 1 Whilst the detailed design of the air conditioning system is the responsibility of the building developer the following design principles must be followed:

Equipment Utility pipes Cables Sprinkler systems Windows Pests

All telecom spaces and pathways must be pest controlled using best available practices. In the case of pests it should be noted that rodents often gnaw cables resulting in damage and the potential of service disruption. Special attention should be given to preventing rodents entering telecom spaces

Building infrastructure standards – V4

All the telecom rooms, with the exception of the floor telecom closets, must be provided with an air conditioning system to main the temperature at 20°C ± 3°C and the relative humidity at 50% ± 10%.

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• • • • • •

Dedicated duty and stand-by units Units interlocked based on sensing power failure or over temperature. Stand-by unit connected to emergency electrical supply All units located outside the telecom rooms Both units connected to the building management system Air flow to feed each telecom space via dedicated ducting

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MAIN TELECOM ROOM

MAIN TELECOM ROOM - raised flooring system:

A main telecom room must be provided on the ground floor for all multi-story buildings. This room will be used for the termination of telecom cables and to house telecom equipment both now and in the future.

The main telecom room should have a raised floor. This raised floor should provide a minimum depth of 300mm above the base floor of the room. The floor should comply with the following additional specifications:

The minimum room dimensions will depend on the function and features of the building. The specifications are detailed in Table 1 below and drawings are provided in Appendix 4.

Tile dimensions

Single villas

No requirement

Complex of villas

Multi-Tenant

Multi-tenant

15 to 50

up to G+10 or up to 150 apartments or up to 9,000m2

G+11 to G+100 or 151 to 1000 apartments or 9,001 to 90,000m2

3 x 3 x 3m (W xDxH)

4 x 3 x 3m (W xDxH)

3 x 3 x 3m (W xDxH) Located in a common area of the master plan

Located on the ground floor Located on the ground floor common area common area Table 1 - Main telecom room specifications

Shopping malls, warehouses, groups of shops, retail outlets and bulk service applications

A standard size of 600mm x 600mm must be used. The thickness of bare tile, excluding top and bottom coverings, must be 35mm. Tile surfaces The top surface of the raised floor tiles must be a high pressure laminate anti-static type. The underside must have a conductive surface.

4 x 3 x 3m (W xDxH) Located on the ground floor common area

The door to the main telecom room must be outward opening with a minimum opening of 900mm x 2100mm (WxH). The door should be labelled ‘Main Telecom Room’. The main telecom room must be provided with a raised floor with a height of 300mm above the base floor of the room. The detailed specification of the raised floor is provided in the next section.

Tile core Calcium Sulphate based tiles are preferred. To comply with UAE regulations the tile panel must have the following fire rating: • •

Fire retardant - 2 hours with a flame spread of 20 Heat resistant minimum of 60 minutes.

Load rating - uniform: The minimum uniform distributed load must be 7kN/m

2

Load rating - concentrated In addition to the basic fire fighting provision detailed earlier, the main telecom room must be provided with an additional automatic fire suppression system that uses inert atmospheric gases. The system must be linked to a fire suppression system panel outside of the room.

The minimum concentrated load is 18.6kN/m2. Tile deflection must not exceed 2mm. Load rating - collapse or ultimate

If the inside level of the room is not at the same height as the outside access then a suitable ramped entry with an anti-slip surface must me provided. A threshold step of 100mm must also be provided inside the room under the raised floor to prevent any ingress of water from outside the room.

The minimum collapse load must be 55kN/m

2

Electrical performance All cables in the main telecom room must be properly routed to the desired destinations under the raised floor, for that an adequate sized cable tray system must be installed to maintain the connectivity as described in appendix 4

• •

Surface and volume resistance (at 500V) 1x105 – 1x1010 ohm All metal parts of the raised floor system must be earth bonded

Pedestals The pedestal specification must be as follows: • • • • • •

All pedestals in contact with the finished slab surface Fixed with glue and screws to the finished slab Allow a void below the raised floor of minimum depth 300mm Support a minimum off-center loading of 12kN Support a minimum centre loading of 30kN Have a height adjusting and locking nut system

Understructure system A stringer system must be provided where the stringers are able to support a minimum loading on the raised floor of 1kN. Tile lifter A tile lifter must be provided in each area of the main telecom room.

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CLUSTERED BUILDINGS- group of towers If a project consists of a cluster of multi-tenant buildings then all of the requirements of a single tower still apply. However, it may be possible to reduce the requirements for individual telecom rooms. This would require the cluster of buildings to be linked to the designated main telecom room. The details of this arrangement should be discussed with du at the design stage.

A floor telecom closet must be provided on each floor of all multi-story buildings. The floor telecom closet is required to provide a flexible point for the installation and maintenance of telecom cables. The specifications are detailed in Table 2 below and drawings provided in Appendix 4 Complex of villas 15 to 50

No requirement*

No requirement*

The mobile-service rooms must have a minimum distributed floor load rating of 10 KN/m2 The doors to these rooms must be outward opening with a minimum opening of 900mm x 2100mm (WxH). The doors should be labelled ‘Mobile service room’

FLOOR TELECOM CLOSETS

Single villas

Mobile-service rooms must be provided every 10 floors starting at the lowest basement level with a size 3m x 2m x 3m (WxDxH) with a secured access.

Multi-Tenant

Multi-tenant

up to G+10 or up to 150 apartments or up to 9,000m2

G+11 to G+100 or 151 to 1000 apartments or 9,001 to 90,000m2

Shopping malls

Residential: 2 x 1 x 3m (W xDxH)

Residential: 2x1x 3m(W xDxH)

Commercial: 2 x 2 x 3m (W xDxH)

Commercial: 2 x 2 x 3m (W xDxH)l

Groups of shops, retail outlets and bulk services applications

Warehouses

ROOF-TOP MOBILE-SERVICE ROOM (up to G+10) Roof-top mobile-service rooms must be provided on the roof of all multi-tenant buildings up to G+10 and access must be provided to the building riser system. The specifications are detailed below in Table 4 and drawings are provided in Appendix 4.

Single villas

Complex of villas 15 to 50

3 x 3 x 3m (WxDxH)

2 x 2 x 3m (W xDxH)

Located in all served floors

Located in a common area on each floor

No requirement* No requirement

No requirement

Multi-Tenant

Multi-tenant

up to G+10 or up to 150 apartments or up to 9,000m2

G+11 to G+100 or 151 to 1000 apartments or 9,001 to 90,000m2 No requirement

3 x 3 x 3m (W xDxH)

Shopping malls

Groups of shops, retail outlets and bulk services applications

Warehouses

Defined at design stage

Defined at design stage

Defined at design stage

On roof top Table 4 - Roof-top mobile services room specifications

Located in a Located in a common area on common area on each floor each floor Table 2 - Floor telecom closet specifications * Note: In the case of a multi-story home, office, warehouse, retail shop, etc, floor distribution boxes will be required with a minimum size of 300 x 300 x 150 mm (WxHxD)

The door to this room should be outward opening with a minimum opening of 900mm x 2100mm (WxH); the doors should be labelled ‘Roof Telecom Room’. The roof-top mobile room must have a minimum distributed floor load rating of 10 KN/m

The temperature of the floor telecom closets must be maintained in range 20 – 30oC. In special cases where the floor telecom closet may need to house non-standard equipment the room specification must be increased in line with those for a main telecom room. This must be discussed at the design stage. The closets must be provided with two outward opening doors with a minimum total opening of 1500mm x 2100mm (WxH). The door should be labelled ‘Floor Telecom Closet’

2

An opening must be provided with a dimension of 600mm x 400mm (WxH), 500mm below the room ceiling in walls facing the building’s roof-top area. Space must be reserved on the roof-top of the building for the installation of mobile-service antennas. This will vary from building to building, but will typically be at the corners of the building or on any raised structure on the roof-top. The exact details will be defined at the design stage.

MOBILE-SERVICE ROOMS (more than G+10) Mobile-service rooms must be provided in all multi-tenant buildings above G+10. The specifications are detailed in Table 3 below and drawings are provided in Appendix 4. Single villas

Complex of villas 15 to 50

No requirement

No requirement

Multi-Tenant

Multi-tenant

up to G+10 or up to 150 apartments or up to 9,000m2

G+11 to G+100 or 151 to 1000 apartments or 9,001 to 90,000m2

No requirement

Shopping malls

Groups of shops, retail outlets and bulk services applications

3 x 2 x 3m Defined at Defined at design stage design stage (WxDxH) Every 10 floors starting from lowest basement Table 3 – Mobile-service room specifications

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Defined at design stage

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HOME CONSOLIDATION CABINETS - residential

OFFICE CONSOLIDATION CABINETS (commercial shell and core)

The home consolidation cabinet is a space to house du’s network termination equipment. It also serves as the distribution point for all of the local wiring. A consolidation cabinet should be provided in each home. This should be a telecom cabinet with the following minimum specifications:

In the case of a shell and core development one consolidation cabinet must be provided in each floor telecom closet. The cabinet specifications are as follows:

• • • • • • • • • • • • • • •

Minimum internal dimensions 860mm x 600mm x 150 mm (HxWxD) Mounted flush with the wall Located in an accessible area inside the home close to the entrance and not inside a kitchen, laundry room or bedroom Installed at a height of 1200mm (measured between the finished floor level and the bottom edge of the cabinet) An adequate safe working space around the location Adequate ambient lighting Not close to sources of water or heat Not close to any electrical distribution or bus bars Adequate ventilation must be provided; minimum of one air change per hour. Fitted with RJ45 patch panel Lockable front door Vertical and horizontal cable management for (Unshielded Twisted Pair) UTP patch cables Sufficient cable entries to accommodate the incoming fibre optic and UTP cables Contain a dual 13A switched socket power outlet fed from a dedicated circuit breaker on the domestic supply Labelled with villa or flat number

A drawing of a typical home consolidation cabinet is provided in Appendix 4.

OFFICE CONSOLIDATION CABINETS (Commercial predefined offices, warehouses, sheds, shops)

• • • • • • • • •

Dimensions 42U x 800mm x 800mm (HxWxD) Fitted with RJ45 patch panel Lockable side and rear panels and a lockable front door Provision for an air circulation of one change per hour Vertical and horizontal cable management for UTP patching cables Sufficient cable entries to accommodate the incoming fibre optic and UTP cables Fitted with minimum 8 way power distribution unit (PDU) Jacking feet Labelled with floor number

When a tenant moves into a shell and core building it is expected that they will install consolidation cabinets in each office or business area. The specifications of these consolidation cabinets are as described in the previous section on ‘office consolidation cabinets - commercial predefined rooms’. However these specifications may need to be increased to the meet tenant’s actual requirements. The tenant may wish to provide their own telecom room space and extend the connectivity to the cabinet in the floor telecom closet. Where UTP cables do need to terminate in the floor telecom closet this must be on a wall mounted patch panel or termination block at a common point accessible to du. All installed cables must be properly routed inside the floor telecom closet to the desired destination under a raised floor or in overhead cable trays. Additionally, an adequately sized cable tray system must be installed to maintain connectivity between the cabinet and the wall mounted patch panel where the UTP cables are terminated (see recommendations in Appendix 5). In these types of cases the building tenants will need to discus the requirements with du at the time of fit-out.

The office consolidation cabinet is a space to house du’s network termination equipment. It also serves as the distribution point for all of the local wiring. A consolidation cabinet must be provided in each business area. This should be a telecom cabinet with the following minimum specifications: • • • • • • • • • • • • • • •

Minimum internal dimensions 860mm x 600mm x 300 mm (HxWxD) Located in an accessible area inside the office close to the entrance and not inside a pantry, washroom, etc. Installed at a height of 1200mm (measured between the finished floor level and the bottom edge of the cabinet) An adequate safe working space around the location Adequate ambient lighting Not close to sources of water or heat Not close to any electrical distribution or bus bars Adequate ventilation must be provided; minimum of one air change per hour Fitted with RJ45 patch panel Fitted with patch panel or termination block / frame Lockable front door Vertical and horizontal cable management for UTP patching cables Sufficient cable entries to accommodate the incoming fibre optic and UTP cables Contain a dual 13A switched socket power outlet fed from a dedicated circuit breaker on the domestic supply Labelled with office/room number

A drawing of a typical business consolidation cabinet is provided in Appendix 4.

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ELECTRO-MECHANICAL

EARTH BARS – all rooms

All telecom rooms must be provided with electrical supplies. The details of the requirements for the various rooms are included in the text below and summarised in Appendix 1.

All telecom rooms, with the exception of floor telecom closets, must be fitted with two clean earth bars of the following specifications:

Diagrams of the telecom rooms showing the positions of the electrical systems and electrical single line diagrams are included in Appendix 4.

ELECTRICAL SYSTEMS – main telecom room Sub-Main Distribution Board

• • • • • •

One earth bar for AC One earth bar for DC Minimum length of 500mm Minimum of 10 holes of 12mm diameter Each must be connected to its own earth pit with a resistance of less than 1 ohm Clearly labelled as AC and DC respectively

The main telecom room should be provided with a Sub-Main Distribution Board (SMDB) with a 125A main incomer from the building’s Essential Distribution Board (EDB). The output side of the SMDB must have a minimum of 7 ways, fitted with Moulded Case Circuit Breakers (MCCB) as detailed below: • • •

4 x 63A 1 x 40A 2 x Not fitted (Spare)

Distribution Sockets Two 13A twin sockets must be installed in the main telecom room. One twin 13A socket must also be provided located next to the entry door at a height of 2.2m above finished floor level. These sockets must be supplied from the normal building utility supply on a spur with a dedicated 20A circuit breaker.

ELECTRICAL SYSTEMS – floor telecom closet The following electrical systems must be provided in the floor telecom closet •

Two 13A twin sockets, one on each side of the closet, fed from the normal building supply on spurs with dedicated circuit breakers rated at 20 A.

ELECTRICAL SYSTEMS – mobile-service room The following electrical systems must be provided in the mobile-service telecom room: • •

63A 3 phase isolators fed from essential building power Two 13A twin sockets fed from the normal building supply on spurs with dedicated circuit breakers rated at 20A.

ELECTRICAL SYSTEMS – roof-top mobile-service room The following electrical systems must be provided in the roof-top mobile-service room: • •

63A 3 phase isolators fed from essential building power Two 13A twin sockets fed from the normal building supply on spurs with dedicated circuit breakers rated at 20A.

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PATHWAYS

HORIZONTAL CONTAINMENT – multi-story / multi-tenant buildings

General Specifications

Floor telecom closet to consolidation points

The following requirements must be applied to all containment systems:

The horizontal containment for routing cables from the floor telecom closets to consolidation points on the served floor can use a number of systems (conduits, cable trays, etc.). The solution will depend on the characteristics of the building type; the specifications are given in Appendix 1. Conduits must only be used when the consolidation point locations are permanent, the cable density is low and the flexibility to modify the routing is not required. Specification for the size of this containment is given in Appendix 5.

• • • • • •

• •

The containment system must be designed so that installed cables do not exceed the minimum specified bend radius All metal containment parts must be free from sharp edges and earth bonded Telecom riser openings must be sealed with a suitable fire retardant material Cable trays must be easily accessible in common areas to facilitate any future provision of additional cables Any cable trays that are in publically accessible areas less than 4.8m above the floor must be covered Containment systems must not run through areas exposed to excessive heat, moisture, corrosive atmospheric or environmental conditions, high voltages, radio frequency interference (RFI) or electro-magnetic interference (EMI) For all containment systems a minimum separation must be maintained from sources of electromagnetic interference. Further details are provided in Appendix 6. The building developer may want to consider redundant containment systems, particularly in commercial or prestigious developments. du must be contacted at the design stage to discuss any such requirements.

Generally, the following minimum dimensions must be provided: •

Mobile service antennas Cable trays must be provided to route mobile-service antenna cables from the floor telecom closets to the antenna locations. One cable tray following minimum dimensions must be provided: •

VERTICAL CONTAINMENT – multi-story / multi-tenant buildings

It is recommended that the main telecom room and floor telecom closets should be designed so that they are vertically aligned within the building. Two cable trays, with the following minimum dimensions must be provided: One of 500mm x 100mm (WxH) with Heavy Duty Return Flange (HDRF) One of 300 mm x 100mm (WxH) with Heavy Duty Return Flange (HDRF)

VERTICAL CONTAINMENT - within homes In case of multi-floor apartments / villas the UTP cables between the floors must run through (minimum) 50mm diameter PVC conduits via a junction / pull boxes located on each floor. The junction / pull boxes must be of minimum dimensions 300mm x 300mm x 150mm (WxHxD). The slab opening (if required) for these conduits must be in a suitable and accessible location in every floor. It is recommended that all vertical conduit runs be aligned to ease the installation of cables.

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HORIZONTAL CONTAINMENT - within homes All UTP cables inside the home must run through PVC conduit with a minimum 25mm diameter from the home consolidation point to each dual outlet. If more than one dual outlet is fed by a conduit then the size and quantity of the conduit may need to be up rated. Please refer to Appendix 5 Intermediate PVC junction / pull boxes must be provided on individual runs that exceed 30m. PVC junction /pull boxes must also be provided where an individual conduit run has a sharp change in direction. The conduit boxes referred to above must have the following minimum internal dimensions:

If it is not possible to provide all of the cable trays runs vertically then horizontal trays of the same size should be provided.

Building infrastructure standards – V4

200mm x 50mm (WxH) with Heavy Duty Return Flange (HDRF)

Final Antenna plan / location will be provided at the design stage.

Risers must be provided in multi-story multi-tenant buildings to allow the installation of telecom cables from the main telecom room to the floor telecom closets, mobile -services rooms and roof-top mobile-service rooms. Hot-Dip Galvanised (HDG) slotted steel cable trays must be provided in the risers to carry the telecom cables between all of the telecom rooms.

• •

One 200mm x 100mm (WxH) cable tray with Heavy Duty Return Flange (HDRF) as a main route from floor telecom closet to main corridors and then branches to each home consolidation cabinet through cable trays of 50mm x 50mm (WxH)

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•

300mm x 300mm x 150 mm (HxWxD)

CLUSTER OF BUILDINGS – groups of towers Where a building consists of a group of towers (on a common shared podium) all of the requirements of a single tower still apply. In addition cable trays must be provided linking the main telecom rooms of the towers. Two cable trays following minimum dimensions must be provided: •

300 mm x 100mm (WxH) with Heavy Duty Return Flange (HDRF).

These trays should be readily accessible in common areas to facilitate any future provision of additional cables. However, if these trays are in an area accessible to the public and are less than 4.8m above the floor then the trays should be covered.

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For all scenarios except commercial shell and core 3m of spare fibre must be left neatly coiled in the consolidation cabinet. In the commercial shell and core cases enough fibre to reach the furthest part of the floor area must be left coiled in the consolidation cabinet in the floor telecom closet.

CABLES General specifications The quantity and type of cabling that must be provided by the building developer shown in Appendix 1 and described in the text below. Building developer must submit as-built drawings of all the cabling they provide to du. This must include test reports showing that the performance of the cabling system meets defined requirements. Details for labeling of cables are included in Appendix 2 and the details of cable performance standards and testing are included in Appendix 7.

The fibre should be labelled at both ends with a unique reference for the consolidation point served and the room or area of origin. Labeling details are included in Appendix 2

FIBRE OPTIC CABLES – from main telecom room to roof-top mobile-service room 2 fibre pair cables must be provided from the main telecom room to the roof-top mobile-service rooms. 10m of spare fibre must be left neatly coiled.

FIBRE OPTIC CABLES - specification CAT3 COPPER CABLES – from main telecom room to consolidation points

The following type of fibre must be provided: • • • • • • • •

CAT3 copper cables must be provided in commercial areas and buildings. The quantity of CAT3 cables from the main telecom room to the consolidation points depends on the characteristics of the building. Table 6 below provides details on how to calculate the number of cables required.

Single mode Indoor drop fibres Individual pairs Suitable for LC connectors Bend insensitive Compliant with ITU-T G.652 Jacket made from halogen free and flame retardant material Low Smoke Zero Halogen (LSZH)

Single villas

Complex of villas 15 to 50

FIBRE OPTIC CABLES – from main telecom room to consolidation points

No requirement

No requirement

The quantity fibre optic cables that must be provided and installed from the main telecom room to the consolidation points depends on the characteristics of the building. Table 5 below provides details on how to calculate the quantity of fibre optic cables required.

Single villas

Complex of villas 15 to 50

No requirement

No requirement

Multi-Tenant

Multi-tenant

up to G+10 or up to 150 apartments or 2 up to 9,000m

G+11 to G+100 or 151 to 1000 apartments or 2 9,001 to 90,000m

Residential: 1 pair per apartment

Residential: 1 pair per apartment

Commercial: 2 1 pair per 100m of leasable area plus 20% spare (add 1 pair for any offices less than 2 100m )

Shopping malls and groups shops or retail outlets

Bulk service applications

Warehouses

Multi-Tenant

Multi-tenant

up to G+10 or up to 9,000m2

G+11 to G+100 or 9,001 to 90,000m2

Commercial: 2 1 pair per 100m of leasable area plus 20% spare (add 1 pair for any offices less than 100m2)

Shopping malls and groups shops or retail outlets

Commercial: 2 6 pairs per shop 1 pair per 100m of or for shops over leasable area plus 500m2 6 pairs per 20% spare (add 1 500m2 pair for any offices less than 2 100m ) Table 6 – CAT3 cable requirements

Bulk service applications

Defined at design stage

Warehouses

6 pairs per warehouse

The cable specification must be of the following specifications: • •

Multi-pair Category 3 as per TIA/EIA-568-B CMR or LSZH sheath

The cables must be provided from the main telecom room to each consolidation point. The cables must be continuous lengths free from joints or branches. The cables must pass through the floor telecom closet. 1 pair per shop or for shops over 500m2 , 1 pair per 500m2

Defined at design stage

1 pair per warehouse

Commercial: 2 1 pair per 100m of leasable area plus 20% spare (add 1 pair for any offices less than 2 100m ) Table 5 – Fibre optic cable requirements

In the main telecom room 10m of spare cable must be left neatly coiled. For all scenarios except commercial shell and core 3m of spare cable must be left neatly coiled in the consolidation cabinet. In the commercial shell and core cases enough cable to reach the furthest part of the floor area must be left coiled in the consolidation cabinet in the floor telecom closet. The Cat 3 cables should be labelled at both ends with a unique reference for the consolidation point served and the room or area of origin. Labeling details are included in Appendix 2

The fibres must be provided from the main telecom room to each consolidation point. The fibres should be continuous lengths free from joints, branches or patching. The fibres should pass through the floor telecom closet. At the main telecom room 10m of spare fibre length must be left neatly coiled in all scenarios.

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CAT6 COPPER CABLES – from consolidation points to building outlets

ENTRY DUCTS

To deliver services from the consolidation points the building outlets unshielded twisted pair (UTP) copper cables must be provided. The full design is the responsibly of the building developer, however, the following minimum requirements must be followed for the efficient and effective provision of services:

The building developer must provide lead-in ducts from the main telecom room to the plot boundary. The exact connection points at the plot boundary will depend on whether du network already reaches the plot. Option 1 – du duct network already exists

• • •

• • • • • • • • •

•

The cables must conform to a minimum of CAT6 specification (Category 6, 100 Ohm, 4 pair 24 AWG as specified in ANSI/TIA/EIA 568-B.2 Addendum 1) The wiring must be in a ‘star’ topology fanning out from the consolidation point. Dual RJ45 outlets with spring load sliding shutters must be provided where ever service is required (all outlets should comply with the performance specifications as detailed in ANSI/TIA/EIA 568-B.2 Addendum 6.) Each socket in the dual RJ45 outlet must be wired back to the consolidation point Outlets must not be cascaded or looped and there must be no splitting of cable pairs The maximum cable length from consolidation point to outlet must not exceed 90m At the consolidation point the cables should be terminated on an RJ45 patch panel and labelled with the socket and outlet served In each outlet each cable must be terminated to maintain the twists in each pair up to within 5mm of the termination Proper strain relief should be provided at the terminated ends of the cable The components of the CAT6 system must be from the same supplier or at least compatible to insure maximum performance Design should incorporate built-in flexibility to meet the growing needs of the occupants. The CAT6 cabling system must be tested using an appropriate field test instrument for compliance with ANSI/TIA/EIA 568-B.2 Category 6 (or equivalent if a higher specification has been used). Numbering and colouring of the pairs should be as defined in EIA/TIA 568B, ISO 11801 / EN50173 using the T568B option.

SPECIAL REQUIREMENTS

The building developer will be responsible to connect to du ducting system. The operator will identify the location and quantity of their lead-in ducts. Option 2 – du duct network is still to be built The building developer will be responsible to extend the lead-in duct to 1m outside the plot boundary. The building developer is responsible for locating and clearly identifying lead-in ducts. In both cases the building developer will be responsible for the Maintenance and repair of lead-in ducts. The lead-in ducts will be for the exclusive use of du. The quantity and size of these ducts for different kind of developments is detailed in Appendix 1. The lead-in duct specifications are as follows: • • • • • • •

Public phones, ATM machines and retail kiosks

•

Provision needs to be made for the connection of public phones, ATM machines and retail kiosks. This must use the same design as that prescribed for commercial buildings; one fibre pair and a CAT3 cable pair from the main telecom room to a business consolidation cabinet. The business consolidation cabinet must be in a secure location. If CAT6 cable is extended to the location of the public phone, ATM machine or retail kiosk it must not exceed 90m It is the responsibility of the building developer / consultant to coordinate with du at the design stage for any special or non-standard requirements.

•

Made from black uPVC Upmost part of ducts must be buried to a depth of 600mm below finished ground level Clearly marked above ground level for easy location Sloping away from the building Protected by concrete when running under permanent paved surfaces Sealed at each end to prevent the ingress of any materials such as water, sub-soil, gas, and pests An entry/pull box must be installed for any right-angled or sharp bends in the lead-in duct route If required at the entry to the main telecom room, a wide-angle long radius bend (factory made) may be provided; alternatively an entry box may also be provided All ducts must include a draw rope made of twisted mildew and rot resistant polypropylene; minimum outside diameter of 6mm; minimum tensile strength of 2400lbs / 1000kg

In case of combined plots, two entry locations are still required for primary and secondary network connections. (This will be advised by du at the design stage)

LEAD-IN DUCTS - Complex of villas In the case of a complex of villas the building developer must connect the lead-in ducts to each villa in the complex. The lead-in duct size must not be reduced until the branching point for an individual villa.

LEAD-IN DUCTS – group of buildings In cases where the building developer wishes to share lead-in ducts between a group of buildings (not on a common shared podium) then the design needs must be discussed with du at the design stage.

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LEAD-IN DUCTS - building entry

Spaces

Infrastructure element / building category

Main Telecom Room

up to 9,000m

up to G+10 or up to 150 apartments or

Multi-Tenant

9,001 to 90,000m

G+11 to G+100 or 151 to 1000 apartments or

Multi-tenant

Shopping malls

Warehouses and sheds

Groups of shops or retails outlets

Hospitals and hotels (bulk service)

Defined at design stage

3m x 4m x 3m (on ground floor)

Defined at design stage

3m x 3m x 3m (for a complex of shops)

Defined at design stage

3m x 3m x 3m (for a complex of warehouses)

Defined at design stage

3m x 4m x 3m (on ground floor)

4m x 3m x 3m (every 10 floors starting from lowest basement)

-

2m x 2m x 3m (WxDxH) (all floors)

-

2m x 2m x 3m (WxDxH) (all floors)

-

Defined at design stage

-

-

-

12U x 600mm x 300mm (HxWxD)

Defined at design stage

-

-

3m x 3m x 3m (WxDxH) (all served floors)

12U x 600mm x 300mm (HxWxD)

-

Defined at design stage

-

-

-

12U x 600mm x 300mm (HxWxD)

-

-

-

-

point (defined at design stage)

properly sized cable tray system from floor closet to each consolidation telecom

consolidation

room to each point (defined at design stage)

properly sized cable tray system from nearest telecom

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-

-

-

-

Cable trays 1 x 500mm x 100mm + 1 x 300mm x 100mm (Quantity x WxH)

properly sized cable tray system from floor telecom closet to each consolidation point (defined at design stage)

properly sized cable tray system from nearest telecom room to each consolidation point (defined at design stage)

-

Conduit 2 x 50mm (Quantiy x Diameter) / as required

Defined at design stage

2m x 1m x 3m (WxDxH) (all floors) 2m x 2m x 3m (WxDxH) (all floors) 12U x 600mm x 150mm (HxWxD) 12U x 600mm x 300mm (HxWxD) 42U x 800mm x 800mm (HxWxD) (in floor telecom closet)

main cable tray (minimum): 1 x 200mm x 100mm (Quantity x WxH) (HDG) from Floor telecom closet to main corridor and brach cable tray to each OCP (minimum): 1x50mmx50mm (Quantity xWxH) and 1 x 200mm x 100mm (Quantity x WxH) (HDG) from Floor telecom closet to antenna locations properly sized cable tray system from floor telecom closet to each consolidation point (defined at design stage)

Cable trays 1 x 500mm x 100mm + 1 x 300mm x 100mm (Quantity x WxH)

-

3m x 4m x 3m (on ground floor)

2

Complex of Villas 15 to 50 2

Single Villas

properly sized cable tray system from floor telecom closet to each consolidation point (defined at design stage)

main cable tray (minimum): 1 x 200mm x 100mm (Quantity x WxH) (HDG) from Floor telecom closet to main corridor and brach cable tray to each OCP (minimum): 1x50mmx50mm (Quantity xW xH)

12U x 600mm x 300mm 12U x 600mm x 300mm (HxWxD) (HxWxD) (in each office area) (in each office area) Cable trays Cable trays 1 x 500mm x 100mm + 1 x 500mm x 100mm + 1 x 300mm x 100mm 1 x 300mm x 100mm (Quantity x WxH) (Quantity x WxH) main cable tray: 1 x 200mm x 100mm main cable tray: (Quantity x WxH) (HDG) 1 x 200mm x 100mm from Floor telecom closet (Quantity x WxH) (HDG) to main corridor from Floor telecom closet and to main corridor brach cable tray to each HCP: and 1x50mmx50mm brach cable tray to each HCP: (Quantity xWxH) and 1x50mmx50mm 1 x 200mm x 100mm (Quantity xWxH) (Quantity x WxH) (HDG) from Floor telecom closet to antenna locations

3m x 3m x 3m (on roof-top) 2m x 1m x 3m (WxDxH) (all 2m x 2m x 3m floors) (WxDxH) (all 12U x 600mm floors) x 150mm (HxWxD) 12U x 600mm x 300mm (HxWxD) 42U x 800mm x 800mm (HxWxD) (in floor telecom closet)

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-

3m x 3m x 3m (on ground floor)

-

-

3m x 3m x 3m (on ground floor)

Mobile Service Room

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-

Residential -

-

12U x 600mm x 150mm (HxW xD)

-

Commercial

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-

12U x 600mm x 150mm (HxWxD)

-

Residential

Commercial (shell and core)

-

Conduit 2 x 50mm (Quantiy x Diameter)

-

Conduit 2 x 50mm (Quantiy x Diameter)

Commercial (pre-defined offices)

Roof-top Mobile-Service Room

Floor Telecom Closet

Home Consolidation Cabinet

A cable tray of minimum dimensions 500mm x 100mm (WxH) with Heavy Duty Return Flange (HDRF) will be required for each pair of D54 entry duct pipes.

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Office Consolidation Cabinet

The quantity of trays required will depend on the entry duct requirements specified in Appendix 1.

Residential

The quantity and location of the entry boxes will depend on the route from the main telecom room to du network. Entry boxes must be included wherever the duct system has right-angle or sharp bends or other factors to facilitate cable pulling.

Main Risers

Horizontal

-

The following specifications must be followed:

-

-

A more detailed set of entry box specifications and drawings are included in Appendix 8.

-

Entry boxes are required for du to install their cables through the lead-in duct. The type and size of entry/pull boxes will depend on the characteristics of the building development. The details for entry boxes are included the text below and summarised in Appendix 1.

Commercial (pre-defined offices)

LEAD-IN DUCTS – entry box

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- 18 Building infrastructure standards – V4

Commercial (shell and core)

Constructed of reinforced concrete Fitted with a ductile iron frame and cover Minimum load rating 400kN Cover marked ‘du - Telecom’ An earth rod must be provided with a resistance of lees than 5 ohms. • • • • •

Pathways

Where lead-in ducts cannot be routed directly into the main telecom room Hot-Dip Galvanised (HDG) slotted steel cable trays must be provided as an alternative. These trays must be easily accessible in common areas to facilitate any future provision of additional cables. However, if these trays are in an area accessible to the public and are less that 4.8m above the floor then the trays must be covered.

APPENDIX 1 –specification of minimum quantities and dimensions

LEAD-IN DUCTS

Electrical Supply

Heat dissipation

Floor Loading

Air Conditioning

Fire fighting

Ducts

Commercial

Commercial

Residential

A high quality outdoor label should be fixed to the outside of the building or compound wall at the point where the lead-in ducts enter the plot. The label should read ‘Telecom duct’ followed by the plot number and, if there is more that one lead-in duct location, a unique reference number.

All telecom rooms (excluding floor closets) Main Telecom Room Floor Telecom Closet Roof-top Mobile Service Room Mobile Services Rooms

Mobile Service Rooms

Roof-top room

Mobile Service Rooms

Main Telecom Room

Mobile Service Rooms

Main Telecom Room

Copper cables (CAT6)

Copper cables (CAT3)

Fibre Optic Cables

Infrastructure element / Building category

Electrical and environmental

Cables

All the infrastructure components described in this document must be clearly and uniquely labelled. The label information must correspond with the descriptions on the as-built drawings. Entry Duct

The type of label used must be suitable for the object being labelled and its environment. This is particularly important for cables and consolidation cabinets where a high quality printed selflaminating type must be used. Entry Box

All telecom space must be labelled with the function of the space and the floor level.

2 x D56 (50mm)

-

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-

-

-

-

-

-

2 pairs per outlet

-

-

Installed by du

Single Villas

TELECOM SPACES 600mm x 600mm x 800mm per villa

-

-

Installed by du

Complex of Villas 15 to 50

Main Telecom Room 1 Mobile-service Room B5 Floor Telecom Closet 12

Multi-Tenant

All consolidation points must be labelled with a meaningful reference. Examples:

Multi-tenant

CP.02.02 - consolidation point in Villa 2 in street 2

9,001 to 90,000m2

G+11 to G+100 or 151 to 1000 apartments or

CP.01.01 - consolidation point in apartment 1 on the first floor

CABLES

1 x 125A plus DB 2 x 13A twin socket 1 x AC and DC earth bars

1 x 125A plus DB 2 x 13A twin socket 1 x AC and DC earth bars

Shopping malls

Warehouses and sheds

-

Defined at design stage

Defined at design stage

Defined at design stage

Defined at design stage

Defined at design stage

Defined at design stage

Defined at design stage

Defined at design stage

Defined at design stage

-

Defined at design stage

Defined at design stage

2 pairs per outlet

Defined at design stage

Defined at design stage

6 pairs per shop or for shops 2 2 over 500m , 6 pairs per 500m

1 pair per shop or for shops 2 2 over 500m , 1 pair per 500m

-

Groups of shops or retails outlets

CABLE TRAYS

2 pairs per outlet

Installed by du

DU.MTR-CP.02.02#F0002 - fibre core 2 from the du main telecom room area to the consolidation point in Villa 2 in street 2

Defined at design stage

Dedicated air-conditioning system to maintain room temperature at 20o C ±3oC

100kN/m (distributed load)

2

1 x 63A isolator 1 x 63A isolator 2 x 13A twin socket 2 x 13A twin socket 1 x AC and DC earth bars 1 x AC and DC earth bars 30KW 30KW 36kW for Roof-top room 36kW for Roof-top room and and 13kW for each mobile service 13kW for each mobile service room room 2

DU.MTR-CP.01.01#F0001 - fibre core 1 from the Du main telecom room area to the consolidation point in apartment 1 on the first floor

1 x smoke detector connected 1 x smoke detector connected to BMS to BMS

JRC12

JRC12

JRC12

2 x D56 (50mm) per retail 2 x D54 (100mm) primary plot 2 x D54 (100mm) primary plot entry entry and and 2 x D54 (100mm) secondary 2 x D54 (100mm) secondary plot entry plot entry 600mm x 600mm x 800mm 600mm x 600mm x 800mm per warehouse per shop plus JRC12 for plot entry plus JRC12 for plot entry

2 x D56 (50mm) per warehouse

2 x hand-held CO2 cylinder extinguishers, 1 x smoke detector and automatic fire suppression system (Inert gas type) 2 x hand-held CO2 cylinder 2 x hand-held CO2 cylinder extinguishers extinguishers Defined at design stage Defined at design stage Defined at design stage

100kN/m (distributed load)

Examples:

Defined at design stage

1 pair per apartment 1 pair per apartment 1 pair per 100m2 of leasable 1 pair per 100m 2 of leasable 1 pair per shop or for shops area plus 20% spare area plus 20% spare (add 1 pair for any offices less (add 1 pair for any offices less over 500m2 , 1 pair per 500m 2 than 100m 2 ) than 100m 2 ) 2 2 1 pair per 100m of leasable 1 pair per 100m of leasable 6 pairs per shop or for shops area plus 20% spare area plus 20% spare (add 1 pair for any offices less (add 1 pair for any offices less over 500m2 , 6 pairs per 500m 2 than 100m 2 ) than 100m 2 ) 2 pairs per outlet 2 pairs per outlet 2 pairs per outlet

up to 9,000m2

up to G+10 or up to 150 apartments or

CONSOLIDATION POINTS

2 x D56 (50mm) per villa 4 x D54 (100mm) primary route 4 x D54 (100mm) primary route 4 x D54 (100mm) primary route and and and 4 x D54 (100mm) for plot entry 4 x D54 (100mm) secondary 4 x D54 (100mm) secondary 4 x D54 (100mm) secondary route route route

-

-

-

30KW

-

2 pairs per outlet 1 x 125A plus DB 2 x 13A twin socket 1 x AC and DC earth bars

Examples: 600mm x 600mm x 800mm per villa plus JRC12 for plot entry

Telecom cables Mobile-service cables

Cable trays and conduits must be labelled based on the services to be carried: JRC12

2 x D54 (100mm) primary route and 2 x D54 (100mm) secondary route

Defined at design stage

Defined at design stage

Defined at design stage

Defined at design stage

Defined at design stage

Defined at design stage

2 pairs per outlet

-

-

-

Hospitals and hotels (bulk service)

• •

All cable types to be labelled Both ends to be labelled Both ends to correspond Meaningful references; e.g. ‘Apartment number and floor’, Villa number and street, etc. • • • •

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- 20 Building infrastructure standards – V4

APPENDIX 2 – administration and labelling scheme

APPENDIX 3 – building contaminants Maximum acceptable concentration 0.01 ppm 100 μg/m³/24h 4 μg/m³/24h 0.05 ppm 0.1 ppm 0.3 ppm

Fire Alarm Panel

900mm.

2 x handheld CO2 cylinder extinguishers

13A Twin Socket fed from utility power at 2.2 m above finish floor level

SMDB

Contaminant Chlorine Dust Hydrocarbons Hydrogen sulphide Nitrogen oxides Sulphur dioxide

APPENDIX 4 – typical drawings / layouts

Entry ducts

4000mm.

fire suppression system (inert gas type) 150 X50 mm Power cable tray

13A Twin Socket From Utility Power with dedicated circuit breaker Smoke Detector connected to BMS 450X100 mm HDG cable tray under raised floor

DC Clean earth bar AC Clean earth bar

13A Twin Socket From

Riser shaft

Utility Power with dedicated circuit breaker

3000mm.

Fire Alarm Panel

900mm. 2 x handheld CO2 cylinder extinguishers 13A Twin Socket fed from utility power at 2.2 m above finish floor level

3000mm.

SMDB

150X50 mm power cable tray

fire suppression system (inert gas type) 13A twin socket fed from utility power with dedicated circuit breaker

13A twin socket fed from utility power with dedicated circuit breaker

DC clean earth bar

AC clean earth bar

Smoke Detector connected to BMS

Entry ducts

Riser shaft

450X100 mm HDG cable tray under raised floor

3000mm.

Building infrastructure standards – V4

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Building infrastructure standards – V4

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Home consolidation cabinet

Main telecom room layouts and electrical single line diagram

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Office consolidation cabinet

Building infrastructure standards – V4

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Building infrastructure standards – V4

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www.du.ae

Mobile service room Floor telecom closet (2 x 2m)

900mm.

2 x handheld CO2 cylinder extinguishers

13 A twin socket fed from utility power with dedicated circuit breaker

13 A twin socket fed from utility power with dedicated circuit breaker

63A three phase Isolator fed from essential building power

3000mm.

Smoke Detector connected to BMS

DC Clean earth bar

AC Clean earth bar Riser Shaft

3000mm.

Roof top mobile service room

Floor telecom closet (2 x 1m)

Building infrastructure standards – V4

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Building infrastructure standards – V4

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APPENDIX 5 – containment capacity guidelines

APPENDIX 6 – separation from power sources

CABLE TRAYS AND TRUNKING – CAT6 In a number of places this document gives specific sizes for containment systems. Where this is not possible the building developer needs to calculate appropriate size for the containment system. The following table gives maximum carrying capacities at installation for a range of containment dimensions. Containment systems must be no more than 60% utilised when first installed. These figures are based on a cable diameter of 5.893mm.

Cable tray dimensions (WxH)

Trunking dimensions (WxH)

50 x 50

50mm x 50mm

55

75 x 50

50mm x 75mm

82

100 x 50

50mm x 100mm

110

150 x 50

75mm x 100mm

165

200 x 50

100mm x 100mm

220

300 x 50

150mm x 150mm

330

450 x 50

150mm x 150mm

495

600 x 50

-

660

900 x 50

-

990

All pathways supporting telecommunications cabling must comply with the minimum separation distances specified in TIA-568-B and TIA-569-A. A summary from these standards is shown below: . Minimum Separation Distance from Power Source