ABU DHABI FUTURE SCHOOL PROGRAM PHASE -2 PACKAGE 4 KG School Al-Falah and Al-BahyaMethod Statement

Method Statement for installation of GRP Pipe (Underground).

ClientAbu Dhabi Education Council

ConsultantDeewan Architects and Engineers

ContractorUnited Engineering Construction

Issued on 31 st July , 2013

Author Reviewed by Approved by MSRev. Name Date Name Date Name Date No.

0 FAISAL WAHEED 01-08-2013 ANAS RABAE 01-08-2013SAID

ABUGHOSH01-08-2013

ASEM-MST-PL-01 REV00

INSTALLATION OF GRP WATER PIPE (UNDERGROUND)

TABLE OF CONTENTS

1. Purpose2. Scope3. Legislation and Code of Practice4. Reference5. Definitions6. Resources 6.1. Equipment 6.2. Safety of Equipment’s7. Safety Precautions 7.1. Construction Hazards 7.2. Personal Protective Equipment 7.3. Safety Training and Emergency procedures 7.4. First Aid8.Detailed Construction Sequence (Methodology) 8.1. Procedure9.Construction Program 9.1 Housekeeping 9.2 Protection of Executed Works 9.3 Responsibilities 9.4 Records10.Inspection and Testing11.Related Forms12.Attachments

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INSTALLATION OF GRP WATER PIPE (UNDERGROUND)

1. Purpose

This document describes the methodology and procedure of installation of GRP pipes for Abu Dhabi Future School Program Phase 2, Package 4, and to ensure that all concerned persons are familiar with the sequence of activities, utilization of resources, and execution of the works in compliance with applicable Safety and Quality Procedures, and Project Documents and technical Specification.

2. Scope of Works

This document covers the following scope of works:

This method statement is intended to outline the activities and the methods used installation of installation of GRP pipes for Abu Dhabi Future School Program Phase 2, Package 4. All activities will be carried out in accordance with the contract details and in full compliance to the Contract Specifications and Documents. All work within the rights-of-way of the standards and specifications will be done in compliance with requirements issued by authorities.

3. Legislation and Code of Practice

All related codes and standards referenced in the Contract Specifications

4. Reference

Contract Specifications Section 21- 10- 50 clause 2 sub clause 2.1.10 Approved Drawings ADSSC standards.

5. Definitions

Client : Abu Dhabi Education CouncilConsultants : Deewan Architects and EngineersContractor : United Engineering Construction

6. Resources

6.1. Equipment / Tools

DESCRIPTION

Tool Box

Measuring Tape

Hack Saw

Spirit Level

Excavator

Roller/Plate Compactor

Solvent Cement

6.2 Safety of Equipment’s

Necessary measures will be taken for the safety of the equipment and any other works affected by the works subject of this document. Relevant entities which might require protection include any such works in the vicinity of the area of work or on the service access or discharge path.The construction team will ensure that any such requirements are documented.

7. Health, Safety & the Environment

7.1 Construction Hazards (tick as appropriate)

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INSTALLATION OF GRP WATER PIPE (UNDERGROUND)

Corrosive OxidizingHighly

flammableExtremely flammable

ToxicHighly Toxic

Irritating Harmful

Explosive

Danger for the

Environment

Constrained Space

Slippery Surface

Danger of Electrocutio

n

Falling from

HeightOther

____________________________________________________________

____________________

The hazards identified above will be controlled under the overall Project Safety Plan which is a separate document communicated to all parties on the project.

7.2. Personal Protective Equipment (tick as appropriate)

The works subject of this document requires that the following PPE be used:

Safety Precaution

Helmet Hi-VizEye

ProtectionFace

ProtectionMask

RequiredRespirator Required

Ear Protection

Gloves Required

Safety Shoes

Required

Protective Clothing

Safety Harness

Equipment Guards

Lifejacket Other

____________________________________________________________

____________________

7.3. Safety Training and Emergency procedures

Before commencing any works, all employees will attend a site safety induction training to ensure all safety measures are understood and implemented and to cover specific procedures in case of emergency. If necessary, practical training exercises will be conducted on escape routes, signage, evacuation and rescue.

7.4. First Aid

Prior to the commencement of work, arrangements will be made for medical facilities and medical personnel to be available from prompt attention to the injured person. The contractor’s vehicle assigned to the job site will be used for transporting the injured person to the first aid station and to the nearest hospital when required.

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INSTALLATION OF GRP WATER PIPE (UNDERGROUND)

Name of On-Site First Aider/s:

First Aid Box Location:

Location of Nearest Hospital:

First Aid and Medical Supplies available at site:

Potable Water Ice Cubes

10x6cm Sterile Gauze Pad 4x6cm Gauze Roller Bandage

10x10cm Sterile Gauze Pad 8x10cm Gauze Roller Bandage

Large Sterile Gauze Pad 10x12cm Gauze Roller Bandage

Burn Dressings 5cm Elastic Bandage

7.5cm Elastic Bandage 10cm Elastic Bandage

Triangular Bandage Barrier Device for CPR

Adhesive Skin Tape Adhesive Leucoplast Tape

Emergency Blanket Safety Pins

First Aid Scissors Tweezers

Disposable Gloves Instant Cold Pack

Non-prescription Medicines (Aspirin, Ibuprofen, Acetaminophen)

First Aid and Burn Spray, Deep Heat Spray

8. Detailed Construction Sequence (Methodology)

8.1. Procedure

8.1.1 Handling for pipes:

During transportation pipes must be handled with care. Do not drop or drag pipes especially on hard

surfaces. Unloading of pipes to be carried out by care.

When mechanical lifting equipment is to be used, no metallic slings, hooks or chains should use in direct

contact with the pipe. Ropes or web slings are preferred, as they will not damage the pipe wall.

8.1.2 Storage on site

Pipes should be stored on a flat dry level surface free from sharp projections, stones or other objects

likely to cause point loading or pipe deformation. Timber supports spaced 1.5m apart along the pipe can

be used to support the pipes. The width of the stack should not exceed 3m.

Fittings will be stored in sheltered conditions in the boxes as supplied to protect them from weathering

and accidental damage.

8.1.3 Trench Formation

The trench shall be excavated by a Hand/Back hoe Loader, after the area of excavation is identified, The

formation of the trench must consist of stable, uniform and smooth soil devoid of irregularities for direct

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INSTALLATION OF GRP WATER PIPE (UNDERGROUND)

laying of pipes, Compaction for the full width of the pipe trench shall be to at least 95% Modified Proctor

Density.

The excavated material shall be placed on one side of the trench leaving the other side clear for pipe

handling, and the bed of the trench should be smoothened out evenly to provide a uniform support for the

pipe.

While excavating 2 No. of labors should be present with the excavating machine to avoid any damages that

can occur while excavating to any of the underground services.

8.1.4 Sequence of Installation

a. Mark routing of pipe work according to approved shop drawing.

b. Install piping as per approved shop drawing.

c. All horizontal drainage piping shall be installed with 2% slope unless otherwise indicated.

d. Install fittings for changes in direction and branch connections with appropriate branches, bends and

long sweep bends

e. Use long turn double Y-branch and 1/8 bend fittings if two fixtures are installed back to back or side

by side with common drain pipe.

f. Do not change the direction of flow more than 90 degrees.

g. Use the proper size of standard increasers and reducers if pipes different sizes are connected.

h. Reducing the size of drainage piping in direction of flow is prohibited.

i. Install encasement on underground piping according to ASTM A 674, AWWA C105/ A 21.5 and

ADSSC standards.

8.1.5 Raft Slab

a. After getting the all civil clearances (including foundation layout, levels, blinding, water proofing & steel

fixing), prepare the pipe length required as the approved shop drawing for the laying through the steel

fixture.

b. Make sure the pipe slope levels are as per the approved shop drawing otherwise as indicated.

c. Pipe to be tied properly as maintaining slope according to approval.

d. Precede necessary steps of installation sequences with leak testing as explained in technical specification.

e. Prior to the concrete filling make sure all the installation and testing are as per the approvals.

8.1.6 Pipe works

Measure length of pipe required, making due allowance for any pipe fittings to be used. Cut the pipe to

the measured length. Ensure that the ends are cut square and clean all burs.

The spigot and socket to be jointed should be carefully examined for any damage which could impair the

jointing procedure.

The spigot insertion depth should be measured as the depth from the mouth to the shoulder of the socket.

The insertion depth should be marked on the spigot using marker.

The jointing system for drainage piping system is “Solvent weld”.

The mating areas of the spigot and the socket should be thoroughly cleaned using the pipe cleaner and a

clean rag.

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INSTALLATION OF GRP WATER PIPE (UNDERGROUND)

8.1.6 Leak Testing

a. The piping system to be tested shall be closed by plugging and blanking all openings in the system in

an approved manner.

b. Suitable plugs are inserted at the lower end of the drain or sewer and at the head of any connections.

c. A suitable bend together with a vertical length of pipe is fitted at the head of the sewer or drain to

provide the necessary test head. The system then filled with water.

d. Close openings in piping system and fill with water to point of overflow but less than 10-foot head of

water (30 KPa) from before 15 minutes before starts to completion of inspection. Water level must not

drop and inspect joints for leak.

e. The sewer or drain under test should be left filled with water for min 2hours.

f. So ensure that all piping and joints are no leak.

g. During the water test, precautions should be taken to prevent any movement of the drain or sewer.

h. All ends shall be plugged after completion of test to protect from debris.

i. After successful testing & Inspection of pipe work, covering of pipe work can proceed as per approved

drawing details.

j. All piped pressure systems shall be hydraulically tested to at least 1.5 times the operating pressure. Pressure shall be maintained for at least 24 hours.

5.6 Backfilling

I. Embedded in concrete

a. Place the pipe in the containment with pipe support members

b. Maintain the slope properly (2%) or as shown on drawing

II. Buried in soil

a. Backfilling shall take place immediately after the entire test has been approved by the Engineers b. Provide warning tapes or detectable warning tapes before final back filling. c. The excavated material shall be used as backfilling material and backfilling material shall be uniformly

wetted with water. The backfilling shall be done in layers that do not exceed 300mm of well compacted layer which the compaction will be done by a plate compactor for the said layer each layer of backfilling shall proceed after the Engineers approval for the compacted layer is given for the previous layer

9. Construction Program

As per main program

9.1 Housekeeping

The work area shall be maintained neat and tidy as reasonable practical at all times.

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INSTALLATION OF GRP WATER PIPE (UNDERGROUND)

9.2 Protection of Executed Works

Executed works in areas were other works are still being carried out shall be protected as per the contract requirements.

9.3 Responsibilities

PositionOverall Resp. Supervise Perform Short Description

Project Manager Construction Manager Project Engineer Site Manager Site Engineer Land Surveyor Safety Engineer QA/QC Engineer MEP Coordinator General Foreman Foreman Charge hand Labourer Helper

9.4 Records

In accordance with the Quality Management System, the following records will be maintained as documentary evidence of the establishment of this method statement:

Records to be retained Responsibility Minimum Retention Period

Disposition

Work Notification( If required)

Site Manager As per ContractRequirements

Request for Inspection( RIW )

QA/QC Engineer As per ContractRequirements

10. Inspection and Testing

In Process works shall be monitored for quality of workmanship and fabrication against approved shop drawings and standards by the relevant supervisor.

All works shall be inspected for conformance to specification. The inspection formats shall be used in accordance with the requirements of the main contractor UNEC. Raise the inspection for installation of GRP water pipe.

11. Related Forms

As per required forms

12. Attachments

Risk Assessment

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