Method Statement for Scaffolding erection.docx R3.docx

DESIGN & CONSTRUCT AL WAKRAH BYPASS ROAD (P015)

DESIGN & CONSTRUCT  AL-WAKRAH BYPASS ROAD (P015)

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DESIGN & CONSTRUCT AL WAKRAH BYPASS ROAD (P015)

METHOD STATEMENT FOR ERECTION OF SCAFFOLDING

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DESIGN & CONSTRUCT AL WAKRAH BYPASS ROAD (P015)

Report Details Client

: Public Works Authority(ASHGHAL)

Name of the Project : Design & Construct Al-Wakrah Bypass Road (P015)

Title of the Report :Method Statement of Erection of scaffolding

PMC

: KBR

Consultant

:Halcrow

Main Contractor

: Larsen & Toubro Limited

Design Consultant : WSP

Rev.

Date

Description of Status

CA

26-08-14

1st Submission

Prepared by

Checked by

Authorized by R.Ethirajan

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DESIGN & CONSTRUCT AL WAKRAH BYPASS ROAD (P015)

TABLE OF CONTENTS

Sl.No 1

2

3

4

5

OBJECTIVE

5

 SCOPE

5

 ABBREVIATIONS 5

REFERENCE DOCUMENTS

6

5

RESPONSIBILITIES

6

MATERIALS

7

METHODOLOGY OF EXCAVATION

8

METHODOLOGY OF FOOTING CONSTRUCTION

9

Page

8

CONCLUSION

8

9

15

 APPENDIX  APPENDIX A - RISK ASSESSMENT AND MITIGATION PLAN  APPENDIX B - HEALTH, SAFETY &CONSIDERATIONS

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DESIGN & CONSTRUCT AL WAKRAH BYPASS ROAD (P015)

1. OBJECTIVE The following method statement is written to provide a safe and efficient system of work for the installation of general working scaffold to all areas of construction sites within the project. It will also cover all scaffold adaption’s to general scaffold and any safety and maintenance checks to

be held under current legislation.

2. SCOPE The scope of this document is to provide the methodology and sequence of works that will be implemented on site complying with QCS2010 the Project Specifications and Standards.

3. SUBMITTALS Prequalification documents were submitted for scaffolding materials to consultant and approved by consultant. Design calculations of scaffolding shall be submitted.

4. SAFETY MEASURES IN PPE  All operatives shall be provided with personnel protective gear (PPE) and it shall be worn at all times during site working hours. Hard hats safety boots/shoes and company safety jackets/ overalls shall be worn at all times.  Additional equipment such as safety harnesses, gloves, goggles, dust masks, ear mufflers necessary shall also be provided and shall be used when and where necessary. The Contractor is solely responsible for the on - site safety and in this respect he shall deploy qualified personnel to maintain and adhere to safety standards and construction regulations where applicable.

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DESIGN & CONSTRUCT AL WAKRAH BYPASS ROAD (P015)

5. RESPONSIBILITIES The responsibilities and authorities of Project personnel shall be assigned as per the project requirements. The Site construction activities shall be carried out by L&T and will be by

headed

the Project in charge. Project in Charge

He shall be responsible for the arrangement and erection of scaffolding Works and in charge of Project Engineers. Project Engineer

The Section Engineer/Site Engineer shall responsible to engage trained and certified scaffolder and ensure safety measures and PPE. He also responsible to check scaffoldings are being erected as per drawing. Scaffolding inspector

The scaffolding inspector is responsible for scaffolding. He will check the scaffolding and give approval by installing scaff tag (green tag). Scaffolding shall be inspected by inspector in every seventh day and shall be signed in sacff tag.

HSE Engineer

The Safety Officer (SO) shall be responsible for the on - site safety implementation at all times and shall carry out daily inspections including inspections on plant, trained personnel, and report to the Project in charge.

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DESIGN & CONSTRUCT AL WAKRAH BYPASS ROAD (P015)

6. MATERIALS  All the scaffolding materials shall be taken from approved contractor and shall be for scaffolding.

7. ERECTION PROCEDURE Ensure the following tasks are carried out prior to the erection of the scaffold

 A] Establish whether the person’s erecting the scaffold require a certificate of competency. B] Identify risks and hazards, C] Take appropriate precautionary measures and install necessary barricading etc.

Basing out the scaffold

Each erector will require a “Kwikstage type” hammer, a scaffold “key”, a one meter ruler, a

small magnetic spirit level and a leathe r belt and “frogs” to carry these tools. a) Level the ground and/or clear the area on which the scaffold is to be erected of any debris b) Determine the point at which to start building the scaffold (placement of the first standard). This will be normally at the high point of the slope. c) Place a sole board on the ground ensuring that it bears evenly along its full length. d) Place an adjustable base jack (jack) on the sole board. e) Place a standard 3000 (vertical member) on the jack. This is the 1

st 

“standard”. (An “inside”

standard.)  f) While one person holds the first standard upright a second member of the crew lays a st 

transom (platform support) at 90 degrees to the building from the base of the 1  standard g) The second person then places a jack and 3000 standard on the sole board. This is the 2 “Standard”. (An “Outside” Standard).

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DESIGN & CONSTRUCT AL WAKRAH BYPASS ROAD (P015)

h) While one person holds the two standards erect (one standard in each hand) the second  person places the transom into the “v” pressing (connection point) on the inside of each

standard to creat e an “H” type arrangement. i)

The second person then places a ledger (Horizontal spacing member) into the “v” pressing of

each standard at 90 degrees to the transom.  j)

Using a suitable hammer, the second person can now, firmly but without excessive force, knock the wedges on the ledgers and transoms into the “v” pressings of the first two standards.

k) You now have an “L” shaped configuration that, once the wedges have been knocked in, will support itself if laid over onto the ends of the ledgers. Repeat steps (c) to (h) above to create a second “H” type arrangement. The inside standard is 3000 rd 

th

(the 3  standard); the outside standard is 3000 (the 4  standard). l)

While one person holds the standards plumb the second person carefully raises the ends of each ledger and locates them in tha appropriate “v” pressing on the second set of standards (“H” type arrangement). It should be noted that this procedure is much easier and therefore

safer using a third person in the crew. m) Knock the wedges of the ledgers firmly into the “v” pressings on the standards. n) Place a spirit level on the first transom and wind the second jack up or down until the transom is level. o) Place the spirit level on the inside of the ledger and wind the third jack up or down until it is level.  p) Place the spirit level on the second transom and wind the fourth jack up or down until it is level. q) You have erected now one “bay” of scaffold - (The rectangular area between 4 adjacent standards). r) Make sure the “bay” is parallel to the structure and is “square” –  adjust as required. st 

nd 

rd 

th

s) Place the second transom between 1  and 2  and the 3  and 4  standards 1.5 meter above the lower set of transoms.

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DESIGN & CONSTRUCT AL WAKRAH BYPASS ROAD (P015)

st 

rd 

nd 

th

t) Place a second ledger between the 1  and 3  standards and 2  and 4  standards 1.5 meter apart, i.e. at the same level as the upper and second set of transoms. u) You have now erected the first “lift” of scaffold –   a lift is the area between 2 vertically adjacent rows of transoms and ledgers. The effective top working platform is 2 meter above the supporting surface. v) The working platform is created by placing a platform on and between the second set of transoms. A double handrail (guardrail) should be fixed to the standards on any side of the working platform from which a person could fall. A toe board (kick board) must be fitted immediately underneath all handrails using toe clip boards or some other suitable means of  fixing. Repeat steps (c) to (v) as required to base out the complete area to be scaffold. Increasing the height of scaffold

The erectors carrying out this procedure should hold a current scaffold certificate and be preoperly trained and supervised. During the erection process the erectors must observe and adhere to the  following key points. a)  All lifts to be decked and complete with toe boards and double handrails, these to be left in  position for the lifetime of the scaffold. b) They must access each working platform from a properly constructed access. c) They must raise and lower materials using a “Rope & Wheel” or by the manual handling method kn own as the “handballing”. Whichever method is used erectors must at all times work from a minimum of a decked working platform which has a handrail on all sides. d) “Splice” a 2000 meter standard on top of all existing standards of the scaffold. If it is inte nded to extend the height of the scaffold more than on 2 meter lift it is recommended that 3000 meter standards are used. e) Fix ledgers and transoms in the “v” pressings 2 meter above the existing working platform to create the next 2 meter lift.  f)  A diagonal cross brace shall be fixed as mentioned in the drawing. The height of the scaffold is to extended as required the procedure outlined shall be repeated ensuring that the bracing and ties are secured at the appropriate phase of the erection process.

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DESIGN & CONSTRUCT AL WAKRAH BYPASS ROAD (P015)

Work shall be proceeded (reinforcement and shuttering) after certifying scaffold by scaffolding inspector (green scaf tag to be placed). Scaffolding shall be inspected every seventh day and signed by scaffolding inspector.

Dismantling

Dismantling of the scaffold shall be in the reverse of the erection procedure above.

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DESIGN & CONSTRUCT AL WAKRAH BYPASS ROAD (P015)

 APPENDIX

 APPENDIX A RISK ASSESSMENT AND MITIGATION PLAN

Sr.N

Hazards

Risk Rat.

RISK ASSESSMENT - PIER CONSTRUCTION Residual Risk Control Measures Rating

8

3

Falling into excavations

4

4

Falling from Height

8

5

6

7

Falling objects (Concrete and construction material) Spillage of Concrete/  fuel Slip, Trips and falls.

6

4

8

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Other Mitigation Measures

DESIGN & CONSTRUCT AL WAKRAH BYPASS ROAD (P015)

RISK RATING TABLE

1 to 3 4 to 7 8 to 19

Process Requirement MINOR MEDIUM MAJOR

 Attention Improvement Measure (s) Corrective Action (s)

20 to 25

CATASTROPHIC

Elimination of Hazard (s)

 APPENDIX B HEALTH & SAFETY CONSIDERATIONS I.

GENERAL SAFETY ISSUES

a. Staff should wear correctly PPE and enter the site b. Operators must have valid certificate for proper equipment operation c. Operators must maintain daily equipment complying with operation requirement d. Barriers, e.g earth bund, were arranged to separate the working place and prevent accident e. Regular safety checks will be performed to eliminate all potential hazards and to conform to safety regulations II.

EMERGENCY ARRANGEMENT

a. Emergency contact should be informed to all staff before the work III.

CONSENT AND PERMITS

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DESIGN & CONSTRUCT AL WAKRAH BYPASS ROAD (P015)

a. The work place should be checked by the engineer before working. Any high-risk areas or the carrying out of high-risk operations such as hot work or confined space IV.

HOUSEKEEPING

a. The site shall always be kept in clean condition, rubbish and waste materials shall be  frequently and regularly removed off the site b.  Adequate number of rubbish collectors or designated areas shall be provided for waste disposal c. Materials shall be stacked safely and securely d. Plant, equipment and material shall be positioned as far as possible in order not to cause obstruction to the site accesses In the case of emergency, the contact information of the person in charge are the following: a. Mr. R. Suresh (Administration Manager), mobile number: 0744 85088 b. Mr. T. Sunder (Accounts Manager), mobile number: 0747 85928

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DESIGN & CONSTRUCT AL WAKRAH BYPASS ROAD (P015)

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