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Checklist for Installation & Testing of Drainage Piping System and Accessories
Checklist for Testing of Drainage Piping System

1- Checklist for Installation & Testing of Drainage Piping System and Accessories

Project Details

Subcontractor:
Contractor:
Section of Work: Plumbing
Location:
Level:
Work Inspection Request (WIR) No.:

Inspection Stages

Setting Out

Check Layout:
Verify layout of the drainage piping system is as per approved shop drawings.
Check Level / Depth:
Ensure the level and excavation depth are according to design and approved drawings.

MEP / Civil Coordination

Clearances Check:
Confirm that there are no service clashes and required clearance is provided.
Verify clearance approval by the consultant’s civil site team.

Installation Inspection

Material Compliance:
Ensure all installed materials match the approved material submittals.
Bedding Condition:
Check that bedding is free from hard protrusions or large stones and is suitable for pipe laying.
Pipe Size Verification:
Confirm that pipe sizes conform to approved drawings.
Slope and Level Check:
Verify that the level and slope of the installed pipes meet the approved shop drawing specifications.
Manhole Joint Installation:
Ensure push-fit joints are correctly installed for all manhole inlets and outlets.
Road Crossing Pipes:
Confirm that pipes crossing roadways are installed according to approved shop drawings.
Leak Testing:
All drainage pipes must be tested for leaks.
Pipe End Protection:
Check that all open pipe ends are sealed to protect against debris during construction.
Concrete Encasement:
Confirm concrete encasement has been applied where required.
Backfilling Release:
Ensure pipes are approved and released for backfilling.
Backfilling Execution:
Check that backfilling is done in accordance with the approved drawings and specifications.

Final Approvals

For Subcontractor QA/QC:

Name:
Signature:
Date:

For Contractor QA/QC:

Name:
Signature:
Date:

For Consultant Representative:

Name:
Signature:
Date:

2- Checklist for Testing of Drainage Piping System

Form No.:
Revision No.: 0
Page: 1 of 1

Project Information

Subcontractor:
Contractor:
Section of Work: Plumbing
Location:
Level:
Work Inspection Request (WIR) No.:

Inspection & Testing Checklist

Stage-wise Verification

Stage:
Item:
Checked by (Subcontractor):
Checked by (Contractor):
Checked by (Consultant):
Date:

Test Details

Piping System:
Test Pressure:
Actual Pressure:
Date of Test:
Duration of Test:
Testing Fluid/Gas:
Start Time:
Finish Time:
Pressure Gauge Number:
Calibration Due Date:

Remarks

(Insert any additional observations or issues noted during the test)

Test Results

☐ No leaks were observed during the test duration. Test results are acceptable.
☐ Test results are not acceptable. Rectify leaks and retest.

Sign-Off and Approval

Subcontractor QA/QC

Name:
Signature:
Date:

Contractor QA/QC

Name:
Signature:
Date:

Consultant Representative

Name:
Signature:
Date:

Drainage pipe installation Checklist: