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METHODSTATEMENT

FOR

INSTALLATION AND TESTING OF ABOVE GROUND DRAINAGE PIPE WORKS

Project Name : PROPOSED 2B + G + 7 STOREY RESIDENTIAL BUILDING

Location : DOHA – QATAR

Document No. : TAK / LMRG / MS– M002 Revision : 00

00 Rev Comments Prepared Checked Reviewed Approved Signature :

INSTALLATION AND TESTING OF ABOVE

GROUND DRAINAGE PIPE WORKS

M.S No.: TAK-LMRG.-MS-M002 Rev. 0

SERVICE: Drainage

Page No.: 2 OF 9

This document is the property of TAKYEEF Electromechanical. No part of this publication may be reproduced, stored in a retrieval system in any form, or transmitted by any means,

Table of Contents

1. Scope 2. Related Documents 3. Definitions and Abbreviations 4. Plant and Equipment 5. Material 6. Material delivery, inspection,storage,handling and protection 7. Construction Sequence and Methodology 8. Inspection and testing 9. Responsibilities 10. Safety 11. Attachments




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12. 1.0 Scope:

This method statement details the method for storage, installation and testing of internal piping for soil, waste and storm drainage system as per approved drawings and project Specification.

2.0 RELATED DOCUMENTS 2.1 Reference 2.1.1 QCS 2010 2.1.2 Construction drawings 2.1.3 Approved shop drawings 2.1.4 Approved material submittals MAT/DR/0001 – 0004 MAT/DR – 007 - 0010 2.1.5 HSE plan 2.1.6 Inspection & Test Plans (ITP) TAK – LMRG - ITP – M 002 2.1.7 Risk Assessment – TAK-RISK-015

2.1.8 Project Specification - PART A – Section 4 – Project Specification for Soil, Waste, Vent and storm water system

3.0 DEFINITIONS & ABBREVIATIONS 3.1 MS – Method of Statement 3.2 ITP – Inspection & Test Plan 3.3 PPE – Personal Protective Equipment 3.4 QC – Quality Control 3.5 QCS – Qatar National Construction Standards 3.6 RA - Risk Assessment 3.7 TBT – Tool Box Talk 3.8 PM - Project Manager 3.9 PE – Project Engineer (Mechanical) 3.10 SE – Site Engineer 3.11 QCE – Quality Control Engineer 3.11 FM – Foreman 3.12 SIR – Site Inspection Request 3.13 SD – Shop Drawing 3.14 MIR – Material Inspection Request 3.15 MC – Main Contractor 3.16 FD – Floor drain 3.17 CO – Clean out 3.18 RWO – Rain Water Outlet 3.19 TEM – Takyeef Electro Mechanical




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4.0 Plant and Equipment The following are the Plant and Equipment that shall be used:

o Cranes o Plumbing / fitters tool box o Tower lights o Generator o Scaffolds o Ladders o Electrical drilling machine o Measurement tape / spirit level o Hacksaw blade with frame o Joining weld machine o Line Dori o Testing instruments

5.0 Material

Approved material shall be used, for detail please refer to the approved material submittals

6.0 Material Delivery, Inspection, Storage, Handling and Protection

6.1 When off loading, pipes shall be lowered to the ground either manually or with mechanical aid like crane depending on the quantity of the pipe and should not be dropped to the ground. Refer – Manufacturer’s instruction for transport, handling and storage (Material submittal – if applicable).




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6.2 Pipes shall be given adequate support at all times and shall be stacked on a flat

surface free from any sharp object.

6.3 Special care shall be taken by the storekeeper to protect the material from physical damaged, distortion and exposure to sunlight.

6.4 Socket pipes shall be stacked in layers with sockets placed at alternate ends of

the stack and with the sockets protruding to avoid stable stacks and the possibility of imparting a permanent set of the pipes.

6.5 Larger pipe sizes of thicker class shall always be placed at the bottom.

6.6 Store Keeper will be responsible for proper storage and maintenance of records, as required.

6.7 On receipt of the material, QA/QC Engineer / Site Engineer shall inspect the

material internally and inspection shall be raised to the consultant for approval through Material Inspection Request (MIR) form if found satisfactory.

6.8 Any non-conforming materials must be labeled and kept in identified area till

necessary CAPA is taken or till it is returned to the supplier. 6.9 Piping material will be inspected for quantity and quality and a formal material

inspection request will be raised for every first lot to the concerned for approval. The material will be used to site only after getting approval for the same.

7.0 Construction Sequence and Methodology

7.1 Pre- Installation

7.1.1 Ensure that all safety requirements are in place in accordance with

project safety plan & Qatar Authority Health & Safety codes in practice. 7.1.2 Ensure that the latest revisions of the approved shop drawings are being

used. Note that any areas on the drawings are subject to modification and work should not proceed in these areas until an updated drawing has been obtained as revision with consultant approval.

7.1.3 Ensure that all plumbers and helpers are aware of the correct materials handling and installation procedure to ensure best quality of workmanship.

7.1.4 All the pipes and fittings shall be cleaned prior for installation. 7.1.5 Work shall be carried out by the site personnel under strict supervision

and guidance of the concerned Supervisors / Foreman (Plumbing) & Site Engineer.

7.1.6 Ladders, step ladders and scaffoldings during construction will be used at site as per the safety plan.




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7.1.7 Installation of pipes and fittings including shall be coordinated with architectural, structural and MEP works for a fit for purpose installation. Any deviation shall be intimated to the engineer for approval prior to start of the work.

7.1.8 Supervisor / Foreman shall ensure equipment and correct tools are available for installation to achieve compliance with the contract requirements.

7.2 Installation

7.2.1 Prior to start of work, FM & SE assigned for the execution of the activity shall be provided with latest approved drawings for site implementation.

7.2.2 Necessary sleeves and boxes shall be provided as per the approved drawings.

7.2.3 For the above ground drainage piping installation make sure that approved drawing and material submittal is available.

7.2.4 Ensure that the approved material is been used at site for the execution. 7.2.5 Ensure that all marking for the pipe lines shall be carried out by FM, with

reference to the floor plans and sectional details drawings. All routes shall be carefully marked utilizing markers and care shall be taken over to proceed. All the fixing lines shall be marked out on the out on the soffit of the slabs from the bench marks, marked by the MC, above finished floor levels in coordination with other services as per the approved shop drawings/ coordinated drawings.

7.2.6 The pipe shall be cut to the required lengths and shall be chamfered at

the ends to remove burrs and smooth finish shall be done. 7.2.7 Remove all dust made by the surface preparation and any trace of

grease inside & outside the edge of the pipe with dry & clean cloth. 7.2.8 The pipes shall be fixed on the supports as per approved drawings. 7.2.9 Distance between the supports, size of rods etc are to be maintained as

per details given in approved SD. 7.2.10 All pipes shall be fixed in neatly arranged lines as possible, and

adequately pitched horizontal lines to allow the system to be properly vented and drained.

7.2.11 A minimum slope shall be provided for the drainage piping as shown in the drawing.

7.2.12 All pipes shall be installed at maximum possible height avoiding structural interference so as to obtain maximum head room.

7.2.13 Pipe and fittings shall be examined for damage and the joint surfaces and components shall be cleaned immediately before laying.

7.2.14 Before making the joint ensure that both pipe ends and the sealing ring in the socket are clean.

7.2.15 Pipes will be laid in the opposite direction to the flow so that spigot end of the pipe is drawn into the socket.




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7.2.16 For the push fit pipe joining ensure that both the pipe and the sealing ring are clean. Lubricate both the pipe ends and the sealing ring in the socket with silicone lubricant. (for further details please refer to the attachment 11.5)

7.2.17 Ensure that components to be joined (by push-fit method) are correctly aligned and then push the spigot fully into the socket.

7.2.18 The joining of larger diameters is generally accomplished by applying leverage to the following socket end using timber block to prevent damage.

7.2.19 For the pipes joining with solvent cement, before joining make sure that both the surfaces are clean.

7.2.20 The solvent cement shall be applied evenly over the mating surfaces of both the pipe and socket.

7.2.21 The pipe shall be inserted to the socket with a slight twisting action to full socket depth. Surplus cement shall be removed with a cloth.

7.2.22 The joint shall be handled after proper curing. 7.2.23 All the open ends of the installed pipes shall be plugged with end caps or

wrapped with PE sheets to prevent dry of dust and other foreign particles.

7.2.24 Provide vent for each system as per the drawings. 7.2.25 Vertical piping will be installed parallel and close to the wall of the

building particularly for those in the shaft area. 7.2.26 Fix the approved floor trap for waste drainage system with pipes and

required fittings as per the approved shop drawings and connect to the approved gully trap.

7.2.27Fix the approved uPVC waste line from the wash basin, bath tub and bidet and connect to the floor trap as shown in the approved SD.

7.2.28Fix flexible connectors on the building expansion joints as per the approved SD.

7.2.29 RWO shall be as per the approved type and installed with piping as per the approved drawings.

7.2.30 All floor drains/ clean outs shall be installed as per the approved SD and are accessible for proper maintenance and are coordinated with architectural layouts.

7.2.31 The SE/ QCE shall ensure that the FD/ RWO are as per the approved material submittal.

7.2.32 Where drainage pipes passing through fire rated walls / partitions, provide collars as per project specification.

7.2.33 Ensure that the pipe works systems are at least 150mm away from any electrical conduits, cable or wiring. Piping shall be avoided to run over any “Electrical Equipment” or panel if it is unavoidable, protection shoul be provided below the pipe work to protect the equipment as per the standard requirements.

7.2.34 Ensure that identification and labeling of piping shall be provided as per the project specification.




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8.0 INSPECTION & Testing 8.1 After completing the installation of piping works gravity leak test is conducted to

ensure and prove the tightness of the joints and ensure there is no leakage in the piping system.

8.2 The whole pipe work as one system and / or the part of the completed pipe work as highlighted in the concerned area based on the concrete pour progress and site conditions shall be tested in accordance with the following steps.

8.3 Test plugs are inserted at the lower end of the drain or sewer and at the head of any connections with proper supports.

8.4 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 is then filled with water from top.

8.5 No section shall be tested to less than a 3- meters head of water. In testing successive sections at least the upper 3-meters of the next preceding section shall be tested so that no joint or pipe, except the upper most 3-meters of the whole system shall have been subjected to a test of less than a 3- meters head of water for 24 hours.

8.6 The sewer or drain under test should be filled with water for at least 4 hours before inspection.

8.7 The loss of water over a period of 30 minutes should be measured by adding known quantities of water every 10 minutes to maintain the original level of standpipe. The loss water should not exceed the equivalent 1 liter per hour, per linear meter, per meter of nominal diameter.

8.8 While system is under pressure, all the system is inspected thoroughly for any leaks in joints. Pipe or fittings is found defective shall be corrected immediately by replacing defective parts with new joints and materials.

8.3 After repairing any leaks and defects. After rectification retest piping portion thereof until satisfactory results are obtained.

8.4 For the installation and testing necessary SIR shall be raised by TEM QA/QC as per the ITP.

8.5 Test result shall be recorded and documented.

9.0 RESPONSIBILITIES Please refer project quality plan for detailed job description.

10.0 SAFETY

10.1 All safety precautions shall be followed as per established project safety plan and procedures.

10.2 Only experienced and skilled Technicians shall be engaged for carrying out

sanitary wares installation work. 10.3 The people involved in the installation shall use PPE such as Safety Helmets,

Safety Shoes, Gloves, etc. as required.




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10.4 Safety Officer shall check and ensure that all safety precaution are allowed

11.0 ATTACHMENTS

11.1 QC checklist for the installation of drainage pipes and fittings 11.2 Gravity test report 11.3 Inspection and Test plan (ITP) - TAK-LMRG-ITP-M002 11.4 Risk Assessment – TAK-RISK-015 11.5 Manufacture recommendations

ATTACHMENT 11.1

1/1

TAKYEEF ELECTROMECHANICAL W.L.L

P. O. Box 22471, DOHA, QATAR

Tel: +974 4451 4400

Fax: +974 4451 4411

ITP NO. PROJECT NAME TAK‐CL‐003

SERVICE DRAWING NO

YES NO

1

2

3

4

6

7

8

REMARKS CHECK POINTS

Check the pipe route according to applicable drawing(s).

Verify the correct size of A/G drainage pipe, according to associated

drawings.

Check the straightness and alignment of pipe with connecting pipes.

Verify the fall and invert levels of the piping installation with the

approved drawings.

Is approved material submittal available

Is approved drawings available

Is specified / approved material available for construction and the

same is been approved by consultant.

STATUSS. No.

INSTALLATION CHECK SHEET

INSTALLATION OF ABOVE GROUND DRAINAGE PIPES

8

9

10

11

12

13

14

SIGNATURE

Sub ‐ Contractor

Main Contractor

Consultant

Verify the absence of any leak in the connections / joints as per the

requirements and is recorded.

Check the straightness and alignment of pipe with connecting pipes.

Check the cleanouts are provided as shown in the drawing.

Check whether acoustic lagging is provided as per drawings.

Check for proper supports as per the drawings

Installation of RWO, FDs and other drains are installed as per the

drawings

Identification as per project requirement

COMPANY NAME

1/1

ATTACHMENT 11.2

1/1

TAKYEEF ELECTROMECHANICAL W.L.L

P. O. Box 22471, DOHA, QATAR

Tel: +974 4451 4400

Fax: +974 4451 4411

ITP NO. PROJECT NAME TAK‐CL‐002

SERVICE DRAWING NO

YES

1

2

3

4

5

REMARKS Time endS. No.

GRAVITY TEST REPORT

Area / LocationSTATUS

NOTime start

SIGNATURE

Sub ‐ Contractor

Main Contractor

Consultant

COMPANY NAME

1/1

ATTACHMENT 11.3

INSPECTION AND TEST PLAN Project Name:

RESIDENTIAL BUILDING (2B+G+7)

BIN MAHMOUD INSTALLATION AND TESTING OF ABOVE GROUND DRAINAGE

PIPE WORKS

Client: GULF TRADING AND CONTRACTING

Consultant: LACASA

Contractor: CHALLENGER

MEP Contractor : TAKYEEF ELECTRO MECHANICAL Page: 1 of 1

Discipline: Drainage works

ITP Sequence No.: TAK-LMRG-ITP-M002 Rev. No.- 00

Activity No. Activity Description Reference Documents Acceptance Criteria Frequency

Verifying Document

Inspection TEM CTC LACASA

1 Approval of Drawings Project Specification Part A Section 1 # 7 Part A Section 1 # 7 Construction Drawings

Drawing submittal approval as Code A or Code B

Prior to start of work.

Approved Drawings

H R H/R

2 Approval of Material Submittal

Project Specification Approval of material submittal as code A or code B.

Prior to start of work

Approved Material submittal

H R H/R

3 Approval of Method statements

Project Specification, Approved Drawings `

Approval of method statement as Code A or Code B.

Prior to start work

Approved Method statement

H H H/R

4 In-coming Material Inspection / Storage and Handling: Identification

Project Specification and Approved material submittal

Perform receiving inspection for all permanent project material.

Comply with the approved material submittal.

For every first delivery

Material Inspection Request

H H W/H

5 Inspection of Above ground drainage pipe works

Project specification /Approved Drawing / Method statement / Manufacturer Installation instruction

Inspection as per the attached check list.

After installation.

Site Inspection Request (SIR) / Check list

H H W/H

6 Gravity test for piping network

Project specification /Approved Drawing / Method statement / ITP

Check all joints for leakage. No leakage allowed. Test duration: as per the specification requirement.

After installation for all joints


H H W/H

7 Final inspection including identification

Approved Drawing / Method statement

As per the check list Final stage after identification


H H W/H

For code use - H- Hold point – Mandatory – work cannot proceed without approval -W- Witness point (Optional) – S- Surveillance or monitoring – R- Review TEM – Takyeef Electro Mechanical, CTC - Challenger

ATTACHMENT 11.4

HAZARD IDENTIFICATION & RISK ASSESSMENT

NOTE: For detailed definition of SEVERITY, LIKELIHOOD & RANKING, please refer to TAK-014 1 FORM NO. TAK-014-002 REV. 1

Location (Department/Project): 2B+G+7 Storey Residential Building on Plot No.23090015/23090013/23090017 Assessment No. TAK‐RISK‐015

Conducted & Prepared by: BERNALDO C. MADRUGABA Date: 4th June 2015 Risk Assessment Revision 002

Checked by: MG RABBANEE Date: Next Review Date 4th Dec. 2015

MAIN ACTIVITY INSTALLATION OF U/G & A/G DRAINAGE PIPES

RISK ANALYSIS LIKELIHOOD(L) X SEVERITY(S) = RISK(R) RISK ASSESSMENT RESULT RANKING

LIKELIHOOD VALUE SEVERITY VALUE SEVERITY

LIKELIHOOD 3 2 1 Risk Score Ranking What to do?

Unlikely 1 Minor 1 3 9 6 3 6 – 9 High(H) Immediate attention and action required. Shall consider whether to eliminate or modify the activity. (Stop the work)

Likely 2 Moderate 2 2 6 4 2 3 – 4 Medium(M) Specific monitoring procedures required, management responsibility must be specified. Shall consider what can be done to eliminate the risk to prevent any negative outcomes.

Frequent 3 Catastrophic 3 1 3 2 1 1 – 2 Low(L) Manage through routine procedures.Can proceed with the activity as planned

No. Hazard Risk Existing Control

Risk Analysis (Existing Control)

1st Eval. Required Additional Control Measures

Risk Analysis (Additional Controls)

2nd

Eval. Final Evaluation

L S R L S R

1. Excavation

1. Collapse of Excavation sides & spoils

2. Cave-ins

1. Engineers & Supervisors must ensure to conduct soil survey before excavating any location to see if there are any UG utilities and also to determine soil quality &/or texture.

2. Provide slopes or install shoring to prevent collapse of excavation sides and observe 3 feet or 1 meter spoil distance from edge of excavation.

3. Avoid super-impose loads. 4. Ensure to provide water control or

“Socalo” to prevent water from entering the excavation area.

2 2 4 M

1. Close supervision must be done by site Engineers, Supervisors & Team Leaders to ensure work is being done as per plan.

2. Supervisor to assess the physical condition and competence of persons assigned for the job, duration of the job and weather conditions.

3. Proper monitoring by HSE personnel to ensure Safety Guidelines are being observed or complied.

4. Hand digging must be done to check UG utilities prior to using mechanical means.

1 2 2 L



2.

External works &/or Exposure under the heat of sunlight.

1. Dehydration 2. Heat stress (Heat

cramps, heat exhaustion and heat stroke)

3. Eye strain/damage due to Ultraviolet rays

4. Skin disease

1. Ensure to provide temporary shade to avoid direct sunlight exposure.

2. Ensure to provide appropriate PPE such dark glasses and coverall uniform for skin protection.

3. Ensure to implement work rotation to avoid personnel from long sunlight exposure.

4. Reschedule jobs to cooler times (night shift) if possible.

2 2 4 M



3. Use of fixed and mobile scaffold

Multiple body injury due to collapse of scaffold

1. Ensure to conduct tool box meeting regarding the proper use of scaffold.

2. Ensure erection of aluminium scaffold must be done according to manufacturer’s guidelines.

3. Ensure the erection/dismantling of scaffold being done by qualified scaffolder.

4. Only scaffold with green tag will be used and refrain from using scaffold with red tag.

1 3 3 M

1. Prior to start of job, supervisor to assess the working at elevation irrespective of the height and consider primary fall protection devices for heights.


1 2 2 L

4. Moving on the platform Fall from height,

1. Operatives must ensure to wear full body harness while working @ height of 2m and the lanyard hook properly secured to rigid post / structure strong enough to support weight of persons working

1 3 3 M

1. Worksite Supervisors shall monitor the operatives and ensure to wear safety harness with lanyards properly hooked.

1 2 2 L

5. Use of ladder (straight and A-Type)

1. Fall from heights 2. Ladder fall or tip-

over

1. Ensure to conduct tool box meeting regarding the correct use of ladder

2. Operatives must ensure to check the ladder prior to use. - Oil or slippery on rungs - Rungs and rails are not split or

broken - Rubber footings and spreaders are

in good condition. 3. PFAS must be observed or

implemented when working 2 meters & above.

4. Ensure to assign ladder attendant to hold ladder while a person is working on it.

2 2 4 M


2. Work that involves restricted vision or hot work such as welding or oxy cutting should preferably not be performed from a ladder. Preference should be given to the use of temporary work platforms

1 2 2 L



6. Spillage and loose materials/tools

1. Slip 2. Trips

1. Platform is kept neat, tidy and free of loose materials/tools. Spillage shall be cleaned up immediately using absorbent materials and any slippery surfaces cleaned and degreased.

2. Maintain good housekeeping around the work area.

2 2 4 M

1. Worksites Supervisors shall monitor the standards of housekeeping during routine walk around and implement clean ups when necessary

1 2 2 L

7.

Tools, equipment and materials from height.

Body injury of person working down due to accidental fall.

1. Operatives shall ensure that all items of equipment and tools are positioned in a safe and secured manner.

2. Never place any tool near the edge of working platform if not secured.

3. Operatives shall ensure to use rope & basket for lifting & lowering of materials

2 2 4 M

1. Supervisors shall monitor the position of all plant, tools and equipment to ensure that it is safe and secure.

1 2 2 L

8.

Paints / Chemical Cleaners / Thinners Petrol / Lubricants & Aerosols

1. Fire / Explosion 2. Inhalation of

Fumes 3. Eye Injury 4. Suffocation 5. Skin Irritation 6. Ingestion

1. Secure MSDS & conduct special TBT or COSHH meeting on use of chemicals and hazardous substances.

2. No smoking on undesignated areas. 3. Forbid open flame or heat and

ignition sources from workplaces where accumulation of fumes is evident.

4. Proper ventilation on Storage areas and workplaces; provide exhaust blower inside rooms or congested areas where people are working.

5. Provide and use appropriate PPE’s such as, but not limited to, respirators / masks, Face shield, rubber gloves.

6. Wash hands properly before eating, use hand soap to remove chemical resins from hands.

2 2 4 M



1 2 2 L

9. Flying/airborne particles Eye injury

1. Operatives shall ensure to wear the required eye protection for the task at hand, ie goggles or face shield when grinding, handling chemicals etc.

2 2 4 M


1 2 2 L

10. Striking objects hit with installed protruding utilities

1. Eye injury 2. Head injury.

1. Operatives shall remain vigilant when moving around the platform and ensure to wear hard hat and eye protection always to avoid head injury.

2 2 4 M


1 2 2 L

ATTACHMENT 11.5

54

Solvent cement jointing

This technique applies to 100, 200, 400 and 500 pipes when

used with 100, 200 and 500 system fittings.

Step 1

Cut pipe square, deburr and clean mating surfaces with

Terrain cleaning fluid 9101 (Fig.1).

Step 2

Coat mating surfaces with solvent cement using a clean

brush, assemble joint immediately, removing any excess

cement with a clean rag. Initial set 3-minutes. Note 24 hours

is required for the joint to fully set before testing. (Fig. 2).

Brush supplied with tin is suitable only for sizes up to 50mm

for larger sizes use at least 12mm brush. Directions for use

of solvent cement are printed on the container label and

must be followed closely.

Conversion of solvent weld socket to seal ring joint (using 109 adaptor)

Under normal use only fit 109 to upstream socket.

Step 1

Clean mating surfaces with Terrain cleaning fluid 9101 (Fig.3).

Step 2

Fit seal ring into 109 collar (Fig. 4)

Step 3

Carefully apply solvent cement to mating surfaces (Fig. 5)

Step 4

Assemble immediately applying firm even pressure until

collar is in correct position (Fig. 6)

Fig. 1 Fig. 2

Fig. 3

Fig. 5

Fig. 4

Fig. 6

Sitework Instructions


Contents Pipe sizes & number of joints achievable*

32mm 40mm 50mm 82mm 110mm 160mm

9101 Cleaning Fluid 125ml 80 80 80 30 20 10

250ml 160 160 160 60 40 20

9100 Liquid Weld solvent cement 30ml 10 10 10 3 2 1

125ml 27 27 27 10 7 3

250ml 55 55 55 20 15 7

9136 Lubricant 250gm 400 300 250 200 150 100

Estimating guide: Terrain cleaning fluid, liquid weld, lubricants

* For guidance only: approximate number allowing for wastage.

55

Seal ring jointing - 109

Step 1

File a 45° chamfer onto end of square cut pipe. Lubricate

rubber seal with Terrain lubricant 9136 (Fig.7).

Step 2

Enter pipe fully into socket, mark pipe as shown (Fig. 8).

Step 3

Withdraw pipe until the mark is 12mm away from socket.

This means a 12mm gap exists between the end of the pipe

and the socket register. This gap will allow the pipe to

expand without distorting the pipework. Anchor the

expansion joint with a holderbat or if not practical anchor a

fitting within 1 metre of the joint (Fig 9 & 10).

Expansion Gap

Fig. 7

Fig. 9

Slip coupling - 111.S

Slip couplings are used for inserting additional fittings such

as branch or for remedial work in existing soil pipework.

To insert fitting:

Step 1

Assemble the fitting with a short length of pipe in the

appropriate sockets. Cut out a section of the assembly,

allowing for an expansion gap. Clean and chamfer pipe ends.

Lubricate seals of the slip couplings.

Step 2

Slide the couplings completely over the spigot ends of the

existing pipe.

Step 3

Insert and line up the new assembly, slide back the couplings

to cover over the joints. Secure slip couplings with

holderbats. (See Fig. 11).

Fig. 11

Fig. 8

Fig. 10

ExpansionGap


mos ag drainage system

Documents

frame o

drainage page

material delivery

storm drainage system

approved drawings

project specification

tak lmrg ms m002 revision

retrieval system