CLIENT CONSULTANT CONTRACTOR

METHOD OF STATEMENT SUBMITTAL FORM

CLIENT: Deyaar Development PJSC Talia @ Al Furjan Plot-014 Service
PROJECT NAME:
CONSULTANT: Jouzy Consulting Engineers Apartment Tower

CONTRACTOR: New System Engineering LLC PROJECT NO. P166

SUB-CONTRACTOR: Spots Electromechanical Works LLC DATE: 30-Dec-2023

SUBMITTAL NO. P166-NSE-TS-MS-MEP-MECH-00001 02

S/N REV
DESCRIPTION: B.O.Q. REFERENCE:
BOQ 576DXB22, DIVISION - 15 MECHANICAL INSTALLATION,
PAGE NO:15/1
Method of Statements for Raft Piping- Drainage System CONTRACT SPECIFICATION REFERENCE:
SECTION 221000 - PLUMBING PIPING
MANUFACTURER'S NAME AND ADDRESS: IMPORTER / SUPPLIER

TYPE: MATERIAL SAMPLE REPORTS DOCUMENTS OTHERS

ATTACHMENTS : CATALOGUES SAMPLES OTHERS COUNTRY OF ORIGIN:

LOCATION OF USE: SHORT LIST SUPPLIERS: YES NO N/A (Contractor)

RELATED TO:
MEP
CIVIL ARCH STRUCT A/C ELECT PLUMB GENERAL
CONTRACTOR:
SUBMITTED BY: Eng. Mohamed Omar SIGNATURE: DATE: 30-Dec-2023
Project Manager
CONSULTANT:
RECEIVED BY: SIGNATURE: DATE:

CONSULTANT APPROVAL APPROVED

A

APPROVED AS NOTED B
ACTION
REVISED AND RESUBMIT C

REJECTED D

CONSULTANTS COMMENTS:
Refer to the review comments noted on the attached Comment Sheet.

CONSULTANT:
RESPONSE BY: Eng. Hamdy Alqatrany SIGNATURE: DATE: 08-Jan-2024
Resident Engineer
CLIENT COMMENTS:

CLIENT:
RESPONSE BY: SIGNATURE: DATE:

CONTRACTOR:
RESPONSE RECEIVED BY: SIGNATURE: DATE:

NOTE: APPROVAL / COMMENTS DO NOT RELIEVE THE CONTRACTOR FROM HIS CONTRACTUAL OBLIGATIONS.

DISTRIBUTION:
Engineer’s Comments Sheet

Date : 08/Jan/2024
Reference : P166-NSE-TS-MS-MEP-MECH-00001-02
Status : Approved as noted

Engineer’s Comments are as follows:-

Mech:

Only for the raft area , all other areas to be provided for check.

Provide mockup.
Pipes during casting to be under pressure to detect if any leak occurring.
Pipes to be fixed properly.
Coordinate with all other services.
MIR, installation approval, testing to be done before casting.

Mamdouh Ahmed Mohamed Eng. Hamdy Alqatrany

Resident Engineer
Mechanical Engineer

Page 1 of 1
 CLIENT CONSULTANT CONTRACTOR

COMPLIANCE STATEMENT
Document Description: Method Statements of Raft Piping - Drainage System
Submittal Ref: P166-NSE-TS-MS-MEP-MECH-00001 Rev.02

S. NO. CONSULTANT'S COMMENTS REPLY TO CONSULTANT'S COMMENTS

MECH:

The Contractor reply /proposal is inaccurate since the submittal subject is for
the U/G piping which includes the external MH, GT, FCo, concrete
1 Noted , Title changed to MOS of Raft Piping- Drainage System
incasement..etc while the Contractor replies consider the raft only. Either
update the subject or update the content of the submittal as commented.
CLIENT CONSULTANT CONTRACTOR

METHOD OF STATEMENT SUBMITTAL FORM

CLIENT: Deyaar Development PJSC
Talia @ Al Furjan Plot-014 Service
PROJECT NAME:
Apartment Tower
CONSULTANT: Jouzy Consulting Engineers

CONTRACTOR: New System Engineering LLC PROJECT NO. P166

SUB-CONTRACTOR: Spots Electromechanical Works LLC DATE: 21-Dec-2023

SUBMITTAL NO. P166-NSE-TS-MS-MEP-MECH-00001 01

S/N REV
DESCRIPTION: B.O.Q. REFERENCE:
BOQ 576DXB22, DIVISION - 15 MECHANICAL
INSTALLATION, PAGE NO:15/1
Method Statement for Underground Drainage System CONTRACT SPECIFICATION REFERENCE:
SECTION 221000 - PLUMBING PIPING
MANUFACTURER'S NAME AND ADDRESS: IMPORTER / SUPPLIER
NA NA
TYPE: MATERIAL SAMPLE REPORTS DOCUMENTS OTHERS

ATTACHMENTS : CATALOGUES SAMPLES OTHERS COUNTRY OF ORIGIN:

LOCATION OF USE: SHORT LIST SUPPLIERS: YES NO N/A (Contractor)

RELATED TO:
MEP
CIVIL ARCH STRUCT A/C ELECT PLUMB GENERAL
CONTRACTOR:
SUBMITTED BY: Eng. Mohamed Omar SIGNATURE: DATE: 21-Dec-2023
Project Manager
CONSULTANT:
RECEIVED BY: SIGNATURE: DATE:

CONSULTANT APPROVAL APPROVED A

APPROVED AS NOTED B
ACTION
REVISED AND RESUBMIT C

REJECTED D

CONSULTANTS COMMENTS:
Refer to the review comments noted on the attached Comment sheet

• Submission Ref No. should reflect on the attached method statement.

CONSULTANT:
RESPONSE BY: Eng. Hamdy Alqatrany SIGNATURE: DATE: 28-Dec-2023
Resident Engineer
CLIENT COMMENTS:

CLIENT:
RESPONSE BY: SIGNATURE: DATE:

CONTRACTOR:
RESPONSE RECEIVED BY: SIGNATURE: DATE:

NOTE: APPROVAL / COMMENTS DO NOT RELIEVE THE CONTRACTOR FROM HIS CONTRACTUAL OBLIGATIONS.

DISTRIBUTION:
Engineer’s Comments Sheet

Date : 28/Dec/2023
Reference : P166-NSE-TS-MS-MEP-MECH-00001-01
Status : Revise & Resubmit

Engineer’s Comments are as follows:-

The Contractor reply /proposal is inaccurate since the submittal subject is for
the U/G piping which includes the external MH, GT, FCo, concrete
incasement..etc while the Contractor replies consider the raft only. Either
update the subject or update the content of the submittal as commented.

Mamdouh Ahmed Mohamed Eng. Hamdy Alqatrany

Resident Engineer
Mechanical Engineer

Page 1 of 1
 CLIENT CONSULTANT CONTRACTOR

COMPLIANCE STATEMENT

Document Description: Method Statements for Underground Drainage System

Submittal Ref: P166-NSE-TS-MS-MEP-MECH-00001-00

S. NO. CONSULTANT'S COMMENTS REPLY TO CONSULTANT'S COMMENTS

MECH:

NSE Structural Engineer submitted the details of embedded piping. Raft thickens's
Pipes should run in the raft as per the common practice, however subject to incresed from 400mm to 700mm to reduce the piping below raft. However this
1
Structure Engineer, details to be submitted in detail. submission is the methodology of pipe installation in Raft to proceed with work.
Final approval subjected to work inspection approval.
The tile coordination to be approved and FD location and wc type to be confirmed
2 There is no tile or WC in basement. Please refer to the Basement layout.
before the final pipe locations.
Raft thickness inceased to 700mm to reduce the piping below raft and wherever
3 Provide deatails of concrete encasement. the pipe goes below raft shall be protected with trench & adequate
reinforcement as shown in the drawing. Refre drainage approved drawings.
There is no Manhole in the basement. Refer to basement drainage L/L drawing.
Catch Basin, Gully trap, Sump pit & sand trap, trench grating only available in
4 Provide manhole pipe method statement. basement. Drainage Manholes are in the basement H/L. Moreover M.H
construction MOS will be submitted separately prior to commence M.H
construction work.
During casting, pipes should be under metered pressure to indictae any leakage or
5 Noted. Compliance subjected to work inspection approval at site
broken pipe.

HSE:
The Contractor shall submit a complete and sufficient Risk Assesment with
1 Comply. Refer to attached Risk assessment.
quantitative matrices for all stages of activities.

2 HSE precautions must not be ignored. Noted. Necessary precautions will be taken prior to commence the work at site.
CLIENT CONSULTANT CONTRACTOR

METHOD OF STATEMENT SUBMITTAL FORM

CLIENT: Deyaar Development PJSC
Talia @ Al Furjan Plot-014 Service
PROJECT NAME:
Apartment Tower
CONSULTANT: Jouzy Consulting Engineers

CONTRACTOR: New System Engineering LLC PROJECT NO. P166

SUB-CONTRACTOR: Spots Electromechanical Works LLC DATE: 4-Nov-2023

SUBMITTAL NO. P166-NSE-TS-MS-MEP-MECH-00001 00

S/N REV
DESCRIPTION: B.O.Q. REFERENCE:

Method Statements for Underground Drainage System CONTRACT SPECIFICATION REFERENCE:

MANUFACTURER'S NAME AND ADDRESS: IMPORTER / SUPPLIER

TYPE: MATERIAL SAMPLE REPORTS DOCUMENTS OTHERS

ATTACHMENTS : CATALOGUES SAMPLES OTHERS COUNTRY OF ORIGIN:

LOCATION OF USE: SHORT LIST SUPPLIERS: YES NO N/A (Contractor)

RELATED TO:
MEP
CIVIL ARCH STRUCT A/C ELECT PLUMB GENERAL
CONTRACTOR:
SUBMITTED BY: Eng. Mohamed Omar SIGNATURE: DATE: 4-Nov-2023
Project Manager
CONSULTANT:
RECEIVED BY: SIGNATURE: DATE:

CONSULTANT APPROVAL APPROVED A

APPROVED AS NOTED B
ACTION
REVISED AND RESUBMIT C

REJECTED D

CONSULTANTS COMMENTS:
Refer to the review comments noted on the attached Comment Sheet.
- Submission Ref No. should reflect on the attached method statement.

CONSULTANT:
RESPONSE BY: Eng. Hamdy Alqatrany SIGNATURE: DATE: 29-Nov-2023
Resident Engineer
CLIENT COMMENTS:

CLIENT:
RESPONSE BY: SIGNATURE: DATE:

CONTRACTOR:
RESPONSE RECEIVED BY: SIGNATURE: DATE:

NOTE: APPROVAL / COMMENTS DO NOT RELIEVE THE CONTRACTOR FROM HIS CONTRACTUAL OBLIGATIONS.

DISTRIBUTION:
Engineer’s Comments Sheet

Date : 29/Nov/2023
Reference : P166-NSE-TS-MS-MEP-MECH-00001
Status : Revise & Resubmit

Engineer’s Comments are as follows:-

Mech:

∧ Pipes should run in the raft as per the common practice, however subject to Structure
Engineer, details to be submitted in detail.
∧ The tile coordination to be approved and FD location and wc type to be confirmed
before the final pipe locations.
∧ Provide details of concrete encasement.
∧ Provide manhole pipe method statement.
∧ During casting , pipes should be under metered pressure to indicate any leakage or
broken pipe.

HSE:

 The Contractor shall submit a complete and sufficient Risk Assessment with quantitative
matrices for all stages of activities.
 HSE precautions must not be ignored.

Hamdy Al-Qatrany
Resident Engineer

Page 1 of 1
“Method of Statements for
Raft Piping - Drainage
System ”

Project Name: B+G+7F Hotel Apartment On Plot No. AFCH014 at Al Furjan

Reviewed By: Engr. Abdelhamid 30/12/2023

Approved By: Engr. Mohamed Omar 30/12/2023

 Reference

METHOD STATEMENT P166-NSE-TS-MS-MEP-

MECH-00001

SPOTS
ELECTROMECHANICAL INSTALLATION OF RAFT PIPING - Date Rev.
WORKS L.L.C
DRAINAGE SYSTEM 29-12-2023 02

PROJECT TITLE:

PROPOSED (B+G+7 FLOORS+ROOF) HOTEL

APARTMENT BULDING ON PLOT NO. AFCH014

PROJECT NO:
P-166

Document Title: Method Statement for Installation of Raft piping- Drainage System.

APPROVAL & AMENDMENT HISTORY

Approval
Rev. No. Date Prepared By: Checked By: Approved By:
Status

02 29/12/2023 Gigin B John

Page 1 of 14
 Reference

METHOD STATEMENT P166-NSE-TS-MS-MEP-

MECH-00001

SPOTS
ELECTROMECHANICAL INSTALLATION OF RAFT PIPING - Date Rev.
WORKS L.L.C
DRAINAGE SYSTEM 29-12-2023 02

CONTENTS

1.0 Applicable Specifications and Drawings

2.0 Approved Applicable Shop Drawings and Materials

3.0 Purpose of Method Statement.

4.0 Location and Scope of Works.

5.0 Sequence of Works.

5.1 Materials
5.2 Tools
5.3 Clearance & NOCs
5.4 Preparation
5.5 Commencement
5.6 QA/QC Assurance

5.5.1 IT Plan
5.5.2 Calibration
5.5.3 Tolerance as specified.
5.5.4 Hold Point
5.5.5 Witness Points
5.5.6 Inspection Points
5.5.7 Test Regime

5.6 Completion of Work

6.0 HSE Measures & Awareness

7.0 Responsibility

8.0 Care, Protection of Works & Handing Over

Page 2 of 14
 Reference

METHOD STATEMENT P166-NSE-TS-MS-MEP-

MECH-00001

SPOTS
ELECTROMECHANICAL INSTALLATION OF RAFT PIPING - Date Rev.
WORKS L.L.C
DRAINAGE SYSTEM 29-12-2023 02

1.0 Applicable Specifications and Drawings.

1.1 Approved Design Drawings / Approved Shop Drawing

1.2 Approved Specifications / Local and international Standards.

2.0 Approved Applicable Shop Drawing and Materials manufacturer recommendation.

2.1 Approved Shop Drawings

2.2 Approved Materials Submissions

3.0 Purposed of Method Statement.

This document defines the methods to be used to ensure that the works to be conducted at
site are in compliance with the approved designs and approved materials.

The method of statement describes the procedure for installation of Underground Drainage
piping system.

4.0 Location and Scope of Works.

This document applies to the inward site inspection, installation, and inspection methods to
be adopted for the Underground drainage piping system.

The work methods are summarized as follows:

1. Delivery and inspection of Drainage and Vent Piping materials upon delivery at site.

2. Material to be inspection again before installation.

3. Preparation of the Works

4. Delivery and inspection of Drainage and Vent Piping materials upon delivery at working
area.

5. Setting out of works.

Page 3 of 14
 Reference

METHOD STATEMENT P166-NSE-TS-MS-MEP-

MECH-00001

SPOTS
ELECTROMECHANICAL INSTALLATION OF RAFT PIPING - Date Rev.
WORKS L.L.C
DRAINAGE SYSTEM 29-12-2023 02

6. Installation of drainage and Vent piping System.

7. Inspection of drainage and Vent piping System.

5.0 Sequence of Works.

5.1 Material:

1. The raceway system material such as Drainage pipes should be according to the site
requirement and in accordance with the approved shop drawing/design drawing It should
be noted that the materials used in this work area are of valuable nature and that they
shall be stores in a secure location, and access to these materials shall be strictly
controlled.

2. All materials delivered to the site will be first to be inspected by the store in-charge / site
in-charge. All materials should be check in accordance with the site requirement,
approved design, and material qualification. It must also be free from any damage caused
during the delivery to site. Delivery documentation shall be checked for completeness.
Defective or damage materials shall either be returned to the supplier’s facility or stored
on site at a suitable quarantine location.

3. Material to be safely transferred from store to working area.

4. Material to be re-inspected before installation.

5.2 Tools:

1. PPE for all staff and labor

2. Water level, level bar, File, Hole saw cutter and marker.

3. Measuring tape and setting out markers

4. Electric Drill

5. Hack saw Cutter

6. Pipe Fitters toolbox

7. Step ladder

Page 4 of 14
 Reference

METHOD STATEMENT P166-NSE-TS-MS-MEP-

MECH-00001

SPOTS
ELECTROMECHANICAL INSTALLATION OF RAFT PIPING - Date Rev.
WORKS L.L.C
DRAINAGE SYSTEM 29-12-2023 02

5.3 Clearance & NOCs

Not Applicable

5.4 Preparation:

1. Prior to installation of drainage and vent piping works, the supervisor and foreman will
verify and ensure that all the safety requirements have been complied with and are in
place.

2. The supervisor will verify that all relevant approved latest revisions of shop drawings,
technical submittals, inspection and test plans are in the workplace for installation
reference. This also includes installation procedures / method statement.

3. The supervisor and foreman will inspect all the materials delivered to the workplace and
ensure that these are the required materials and also for damage or defect. Materials
found not to be as per requirement or with damage or defect will be set aside. These will
be properly labeled and returned to the warehouse. These will also be reported in a Non-
Conformance Report to the QA/QC Engineer.

4. The supervisor and foreman will orient and familiarize all the plumbers and labors
involved in the installations regarding the relevant approved shop drawings, technical
submittals, installation procedures and details, acceptance criteria and safety
requirements.

5. The supervisor and foreman will examine surfaces to receive drainage and vent pipe works
for compliance with installation tolerances and other required conditions, as described in
the installation requirement. Installation will not proceed until unsatisfactory conditions
have been corrected.

5.5 Commencement:

1. All delivered material shall be inspected upon arrival at site / working area.
2. The delivered material shall be in accordance with the approved design and approved
shop drawing / Approved Material submittal.
3. The material should no defect or damage when delivered on site.
4. All delivered material that does not conform to the approved submittal and does not
conform on the mentioned above shall be returned to the point of supply or stored on the

Page 5 of 14
 Reference

METHOD STATEMENT P166-NSE-TS-MS-MEP-

MECH-00001

SPOTS
ELECTROMECHANICAL INSTALLATION OF RAFT PIPING - Date Rev.
WORKS L.L.C
DRAINAGE SYSTEM 29-12-2023 02

site at a suitable quarantine store. An NCR shall be raised for such non-conformance.
Noncompliance material to be sent outside the site.

Installation of Underground Drainage Piping.

1. Determine the position of the pipe as per approved shop drawing with the help of
surveyor coordinates for catch basins & other drain points. Pipe invert level, to be marked
out along the route of the pipe at intervals not exceeding 6 meters and at every branch,
changes in direction together with positions of floor drains and drain points.
2. Positions of the floor drains, cleanouts, vents, and drain points to be clearly marked and
identified by way of marker posts from main contractor’s surveyor reference provided on
site.
3. Each drain run prior to installation will be marked out with string between points of
changes in direction and held tight to prevent sagging. This line will be on the crown of the
pipe or if not possible to one side and will allow the pipe to be installed in a straight line to
the correct slope.
4. Measure length of pipe required and cut to suit ensuring a square cut. De-burr pipe and
chamfer ends. An allowance of 5-10mm for expansion to be made for each joint of pipe
run.
5. Lay pipes in aligned with the marker strings.

Drainage pipe joint Installation:

1. Measure depth of the socket and mark with pencil on spigot end of pipe.

2. Lubricate spigot end of pipe with the approved manufacturer’s lubricant.

3. Push spigot end of pipe into uPVC ring socket to full depth, ensuring that the ring seal is in
Place correctly and then pull back by 5-10mm to allow for expansion.

4. Repeat procedure along length of pipe and all branch drains.

5. At the head of each drain branch, ensure that the floor drain or drain point is level with the
marker port reference and that the fitting is square.

6. On completion of each drain section, check and adjust if necessary to ensure that the pipe
Is in line with the marker string and all inverts are correct.

7. For pipe work that will be cast within the concrete slab, the pipe is to be restrained and
Supported by bent rebar rods with tie wires fixed around the pipe to prevent movement.
During testing and pouring concrete.

Page 6 of 14
 Reference

METHOD STATEMENT P166-NSE-TS-MS-MEP-

MECH-00001

SPOTS
ELECTROMECHANICAL INSTALLATION OF RAFT PIPING - Date Rev.
WORKS L.L.C
DRAINAGE SYSTEM 29-12-2023 02

8. Where the Raft thickness less than 500 mm and the slope ratio of pipe goes beyond the
raft depth compacted trench with Steel reinforcement to be provided to ensure the slope
of pipe maintained without affecting the substructure of the building.

8. During concrete pour, minimum one senior representative from main contractor & MEP
Contractor to be present to supervise the work. Proper care should be taken to avoid.
Contact from the mechanical vibrator to the pipe to avoid pipe breakage. In event of pipe
damage during casting that section of pipe will be removed immediately and
replaced and water will be filled to check for any leaks. Casting will proceed to other areas.
Till the pipe has rectified.

9. Pipes shall be laid to uniform slope as per approved shop drawing & DM standards.

10. All works open ends to be covered with temporary fabricated end caps / plugs.

Inspection and Testing

1. All work shall be inspected for quality workmanship and conformance to specification prior to
offering for inspection.
2. Notice of inspection shall be advised to main contractor and to the consultant for their
discretionary attendance and witnessing. Notice shall be advised at least 24 hours prior to
date of inspection.
3. Water gravity leak test is conducted to ensure and prove the tightness of the joints and
ensure there are no leaks in the piping system.
4. The water pressure test can be applied to the entire system or in sections. All opening in the
piping will be tightly closed by end caps/plugs or by suitable means and the system filled with
water to the point of overflow from the highest point.
5. No section of the system shall be tested to less than 1.5meter head of water.
6. The water shall be kept in the system or in the portion under test for at least 4 hours during
inspection. The water level will be marked on the pipe at the start and before the end of the
test.
7. While the system is under test, a careful inspection shall be made on all the pipes and joints. If
any leaks in joints or evidence of defective fittings or pipe is revealed the defective fittings /
pipe shall be replaced with new.
8. After rectification the test will be carried out for minimum of 4 hrs.
9. Testing will be witnessed by main contractor / consultant to their satisfaction and
documentation will be maintained by the consultant and main contractor signing off the
inspection request.
10. Only after approval of testing, the pipe would be allowed to cast within the raft slab.
11. Temporarily seal the pipe opening using plastic or wooden disc with packing taps to avoid
ingress of debris and mortar during concrete pouring.

Checking the Slope of Drainage pipe:

Page 7 of 14
 Reference

METHOD STATEMENT P166-NSE-TS-MS-MEP-

MECH-00001

SPOTS
ELECTROMECHANICAL INSTALLATION OF RAFT PIPING - Date Rev.
WORKS L.L.C
DRAINAGE SYSTEM 29-12-2023 02

1. Select the spirit level that will rest against the drainage pipe you are measuring without
contacting fitting or other obstacles. The level must rest only on the pipe.
2. Set the spirit level on the top of the pipe or hold it against the bottom. Note the position of
the spirit level’s bubble, it should not be centered. Life the end of the spirit level until the
bubble is centered.
3. Measuring the distance between the end of spirit level and the pipe. The distance is the slop
of the pipe along the length of spirit level.
4. Verify the slope is in the correct direction. The pipe must slope downward from the source of
the waste towards the main sewer or manhole.

9. Tools or loose materials to be placed safely.

10 For subsequent inspection procedures, see the Project Quality Control Plan.

11. Pipe work testing shall be undertaken in accordance with ITP.

Make joints of all fittings and straight coupling by:

1. Measure depth of the socket and mark with pencil on spigot end of pipe

2. Lubricate spigot end of pipe with the approved manufacturer’s lubricant.

3. Push spigot end of pipe into uPVC ring socket to full depth, ensuring that the ring seal is in
place correctly and then pull back by a distance of 12mm to allow for expansion.

4. Repeat procedure along length of pipe and all branch drains.

5. At the head of each drain branch, ensure that the floor drain or drain point is level with the
marker port reference and that the fitting is square.

6. On completion of each drain section, check and adjust if necessary to ensure that the pipe
is in line with the marker string and all inverts are correct.

Checking the Slope of Drainage Pipe:

1. Select the spirit level that will rest against the drainage pipe you are measuring without
contacting fittings or other obstacles. The level must rest only on the pipe.
2. Set the spirit level on the top of the pipe or hold it against the bottom. Note the position of
the spirit level’s bubble, it should not be centered. Lift the end of the spirit level until the
bubble is centered.

Page 8 of 14
 Reference

METHOD STATEMENT P166-NSE-TS-MS-MEP-

MECH-00001

SPOTS
ELECTROMECHANICAL INSTALLATION OF RAFT PIPING - Date Rev.
WORKS L.L.C
DRAINAGE SYSTEM 29-12-2023 02

3. Measured the distance between the end of the spirit level and the pipe. The distance is the
slope of the pipe along the length of the spirit level. The standard slope for most soil and
waste pipe is 1 percent downward in direction of flow.

4. Verify the slope is in the correct direction. The pipe must slope downward from the source
of the water or waste toward the main sewer or catch basin.

5.6 QA/QC assurance.

1. All materials used on the project shall be brand new and of high quality. Obtain approval of
all manufacturers from the Consultant and the Owner.

2. "New" is defined as newly manufactured, "state of the art," tested and proven item of
equipment. Items which have been held in stock for any extended period of time by either the
Manufacturer or the Supplier will be rejected.

5.6.1 IT PLAN:

ITP will be submitted separately.

5.6.2 CALIBRATION:

1. The Tools & Equipment Maintenance In-charge shall maintain the “Calibration Schedule”,
which shall record the dates of required calibration checks.

2. Calibration dates may be established by reference to the manufacturer’s recommendations,

or may be determined at the discretion of the Tools & Equipment Maintenance In-charge
based on the nature of the equipment, its area of use and its degree of usage.

3. The Tools & Equipment Maintenance In-charge shall ensure that all items appearing in the
calibration schedule are checked, and if appropriate re-calibrated by the dates stipulated in
the schedule.

4. The Tools & Equipment Maintenance In-charge shall give adequate advance notice to sites
and individuals of the dates by which their items of equipment must be returned for
calibration checks.

5. The Tools & Equipment Maintenance In-charge may, at his discretion, either perform such
calibration checks as may be required himself or send the item of equipment to an external
agency for checking, in line with the policies of Purchase Department.

5.6.3 TOLERANCE AS SPECIFIED:

1. A physical dimension,
Page 9 of 14
 Reference

METHOD STATEMENT P166-NSE-TS-MS-MEP-

MECH-00001

SPOTS
ELECTROMECHANICAL INSTALLATION OF RAFT PIPING - Date Rev.
WORKS L.L.C
DRAINAGE SYSTEM 29-12-2023 02

2. A measured value or physical property of a material, manufactured object, system, or

service,
3. Other measured values (such as temperature, humidity, etc.).
4. In engineering and safety, a physical distance or space (tolerance), as in a truck (lorry), train
or boat under a bridge as well as a train in a tunnel (see structure gauge and loading
gauge).

Dimensions, properties, or conditions may vary within certain practical limits without
significantly affecting functioning of equipment or a process. Tolerances are specified to
allow reasonable leeway for imperfections and inherent variability without compromising
performance.

5.6.4 HOLD POINTS:

The Site Store In-charge shall clearly mark and label those items which are pending for
inspection/verification as “Hold for Inspection”.

Subsequent to the inspection, these materials/products shall be stored in areas suitably

marked and labeled for their retention.

The Site Store In-charge shall ensure that all items are stored in a suitable manner to prevent
deterioration and damage.

Items received from any source not suitable for intended use are held pending their disposal
or return to supplier, shall be marked and labeled "Rejected Items".

5.6.5 WITNESS POINTS:

Refer to the Checklist for Witness Point (Copy attached)

5.6.6 INSPECTION POINTS:

The Project Manager/In-charge shall be responsible for monitoring and inspecting the quality
of the installation throughout the course of the contract.

1. The QA/QC Engineer shall evidence the inspection of the works in progress by preparing for
each completed stage or deemed appropriate area, on the “Inspection Request”.
2. The “Inspection Request” shall define the stage of works or area completed and shall
further summarize the various installations inspected and found to be acceptable by the
company.

3. The QA/QC Engineer shall, subsequent to completing the appropriate “Inspection

Request”, advise the main contractor or client’s authorized representative of those areas

Page 10 of 14
 Reference

METHOD STATEMENT P166-NSE-TS-MS-MEP-

MECH-00001

SPOTS
ELECTROMECHANICAL INSTALLATION OF RAFT PIPING - Date Rev.
WORKS L.L.C
DRAINAGE SYSTEM 29-12-2023 02

in which our works are deemed to be completed and which may be released for following
trades.

4. The QA/QC Engineer shall ensure that the “Sanitary ware Handing Over Form” is prepared
for each area in which the installation of sanitary ware is completed and ready to be
handed over to the main contractor or client’s authorized representative.

5. The QA/QC Engineer shall obtain such signatures as may be contractually required from
the main contractor and/or client’s authorized representative on the “Sanitary ware
handing over Form”.

5.6.7 TEST REGIME:

1. The QA/QC Engineer shall ensure that the applicable tests are conducted, at appropriate
stages, during the course of the project and the results are recorded on the following
forms:
a) Foul and Surface Water Drainage
b) Gravity Test Report

2. Test reports shall accompany, as appropriate, by explanatory notes in the form of check
lists, guidelines, method statements or technical procedures, to ensure the correct
method of conducting the test.

3. The above test reports shall reflect the name and signature of the person conducting the
test together with the unique reference number of the instrument used to perform the
test and shall be passed to the QA/QC Engineer for his approval signature confirming the
test results obtained.

4. The QA/QC Engineer shall obtain such approvals of tests so conducted as may be
contractually required from the main contractor and/or consultant’s engineer.

5.7 COMPLETION OF WORK:

1. INSPECTION:
a) The QA/QC Engineer shall, at the time of completing the installation, inspect the
works so completed and produce a list of any defects (snag list) that he may
recognize as requiring rectification.
b) The QA/QC Engineer shall ensure that all such defects are rectified in a timely
manner.
c) The list of defects produced by the QA/QC Engineer shall constitute evidence of the
inspection of the completed installation.

Page 11 of 14
 Reference

METHOD STATEMENT P166-NSE-TS-MS-MEP-

MECH-00001

SPOTS
ELECTROMECHANICAL INSTALLATION OF RAFT PIPING - Date Rev.
WORKS L.L.C
DRAINAGE SYSTEM 29-12-2023 02

2. The QA/QC Engineer shall respond in a timely manner to any preliminary snag lists that
may be issued by the Client’s authorized representative prior to his final inspection of the
installed works.

3. The QA/QC Engineer shall, subsequent to completion of rectifications of defects, advise

the Client’s authorized representative of the completion of the installation works.

4. The QA/QC Engineer shall ensure that all defects advised by the client’s authorized
representative, when conducting his final inspection of the installed works, are rectified in
a timely manner.

5. Unless specified by the contract agreement, the company shall obtain such local authority
approvals, as may be required, for the following:

a) Plumbing Services
b) Fire Fighting / Fire Alarm
c) Drainage
d) Water
6. The QA/QC Engineer shall ensure that all defects advised by the relevant local authority
when inspecting the installed works are rectified in a timely manner.

6.0 HSE measures And Awareness.

1. Proper safety harness to be used and secured, if required.

2. All personal protective equipment shall be used as appropriate according to the nature of
the job.

3. Housekeeping shall be of good standard and all cut pipes and debris shall be removed.

7.0 Responsibility.

The Project Manager is the overall responsible person for the process of implementation of
the works. The Project Engineer will be responsible for all construction activities at the site
and will directly supervise through erection supervisor/skilled foremen at the work site. The
Site Engineer will be responsible for arranging and controlling the inspection and testing
activities.
Furthermore, it is the responsibility of each individual employed in the project to take due
care to ensure their own personal safety and that of their work colleagues.

8.0 CARE, PROTECTION OF WORKS, & HANDING OVER.

8.0.1 Purpose & Description

Page 12 of 14
 Reference

METHOD STATEMENT P166-NSE-TS-MS-MEP-

MECH-00001

SPOTS
ELECTROMECHANICAL INSTALLATION OF RAFT PIPING - Date Rev.
WORKS L.L.C
DRAINAGE SYSTEM 29-12-2023 02

1. To ensure that completed system are inspected, commissioned (in accordance with
relevant commissioning and completion plans) and operating in a safe manner in
accordance with the contract and manufacturers specified requirements (All relevant
documentation included) and then formally handed over to client or authorized
representative.
2. Protection of work till project handing over.

8.0.2 Procedure
Inspections & Defect Lists (Snag List)

(1) Site Inspections

(a) At the outset of the contract agree the basis on which the works will be inspected
(In accordance with ITPs and specification requirements).
(b) Carry out pre-commissioning checks.
(c) Non-compliances identified while carrying out site inspections, testing and/or
commissioning are recorded on the relevant inspection test reports.

(2) Client’s Defect Lists

Should there be any defects identified the construction Manager/Engineer responsible

for the specific area will in conjunction with the QA/QC Engineer complete the
relevant NCRs and put in place a plan to rectify and re-inspect.

(3) Commissioning

(a) Prepare and issue to the commissioning Engineer, before starting commissioning
work, a schedule of items to be checked; tested and/or commissioned, together with
the relevant drawings and documents. Use authorised and calibrated test instruments,
copies of the calibration certificates should be attached to the commissioning
documents as required.
(b) Issue an Inspection Test Request in advance of Commissioning to enable the Main
Contractor and/or the Consultant to witness the Commissioning.
(c) Use a Check sheet to record details of any installation/plant/equipment failures.

(4) Commissioning Documentation

(a) Collate the results recorded while the commissioning done, include any specialist
supplier reports.
(b) Include commissioning documentation in the Operating & Maintenance Manuals
for handover to Client or his representative. Where it is not appropriate to include
them in the Manual forward the commissioning results later for inclusion with the
other records.
Page 13 of 14
 Reference

METHOD STATEMENT P166-NSE-TS-MS-MEP-

MECH-00001

SPOTS
ELECTROMECHANICAL INSTALLATION OF RAFT PIPING - Date Rev.
WORKS L.L.C
DRAINAGE SYSTEM 29-12-2023 02

(c) The person responsible for Commissioning will produce a commissioning Plan to be
issued and approved prior to commissioning commencing.
(d) Instruction & Demonstration
(e) Where required use the commissioning period to instruct the client or
representative, on the use and maintenance of services provided. This must
include information, instruction and training in the safe operation and
maintenance of the systems and equipment. Whilst the Supplier’s specialist.
(f) Commissioning engineer is doing his/her work, arrange for him/her to
demonstrate the operation and maintenance of the equipment to the client or his
representative.
(g) Arrange a handover meeting with the client to ensure that they are satisfied that
all defects are closed out and that the installation functions safely & correctly. At
this meeting, or as required by the specification; issue the appropriate number of
Operating & Maintenance Manuals and Record Drawings. The ‘Handover’ is
deemed to be the date from when the client has beneficial use of the installation,
unless there has been earlier partial hand-over/s.

(5) Handover Documentation

(a) The following documents (Examples only) will be issued by Al Ittihad Electro
Mechanical Co. to M/S AL Sahel contracting company L.L.C for onward issue to
the Engineer:
(b) As Built Drawings.
(c) O&M Manuals.
(d) Asset Registers.
(e) Local regulator approved services drawings.
(f) Civil Defence Completion Certificate.
(g) Testing and Commissioning Reports.
(b) The O&M Manuals will follow a standard format previously used within our
company which can be modified to suit Clients’ particular needs.

(c) Asset Register will be produced which will record such data as:
 Asset Type, TAG Code, System
 Supplier Code, Manufacture Code, Model and Origin
 Product Code, Quantity
 Drawing, Photograph number Serial Number, Bar Code
 Nominal Capacity, Date Commissioned
 Life Span, Warranty
 Location, O&M Manual Reference
 Spares Register

***************************
Page 14 of 14
 Page no. : 1 of 4
Date of Issue : 20/12/2023
Revision : 00
RISK ASSESSMENT Document ref : P166-NSE-TS-MS-MEP-
MECH-00001
Project :P-166
Installation of Under Ground PVC Pipes and RA No. P166-NSE-TS-MS-MEP-MECH-00001
ACTIVITY:
Fittings in Raft DATE 20/12/2023
PROPOSED (B+G+7
FLOORS+ROOF) HOTEL
LOCATION: Basement Raft PROJECT:
APARTMENT BULDING ON
PLOT NO. AFCH014
EQUIPMENT TO BE USED SUBSTANCES TO BE USED REVISION STATUS
1. Hand Saw REVISION NUMBER REVISED DATE
2. Measuring Tape
Rev. 00 20/12/2023
3. Chalk Line & Powder
4. Wire Cutter N/A
5. Glue
6. Lubricant
7. Spirit Level
POTENTIAL HAZARDS / CONDITIONS CONSIDERED (TICK BOX) PERSONS AT RISK (TICK BOX)

FALL FROM HEIGHT ELECTRICITY DEEP EXCAVATION EMPLOYEES PUBLIC

FALLING OF MATERIALS MANUAL HANDLING SLIPS / TRIPPING

SUBCONTRACTORS
LIFTING OPERATION COSHH ENVIRONMENTAL RISK

FIRE RISK ADVERSE WEATHER GENERAL PUBLIC VISITORS

MANDATORY HSE REQUIREMENTS (TICK BOX)

SAFETY INDUCTION WORK PERMIT

TOOLBOX TALK PROPER TOOLS / EQUIPMENTS

PROPER PPE PROPER SUPERVISION

SAFE WORK PLACE PROPER BARRICADE AND WARNING SIGN IN THE AFFECTED AREA

PERSONAL PROTECTIVE EQUIPMENT (PPE) REQUIREMENT (TICK BOX)

SAFETY HELMET GLOVES EAR PLUGS / DEFENDERS

SAFETY BOOTS MASK RESPIRATORY / BREATHING APPARATUS

GOGGLES / SPECTACLE OVERALLS FULL BODY SAFETY HARNESS

TO REFER OTHER RISK ASSESSMENTS

1.
2.
3.
4.
RISK LEVEL

H (HIGH-Potential to cause death or permanent injury) M (MEDIUM – Potential to cause loss time injury) L (LOW – An injury treatable with First Aid)

LIKELIHOOD (L) SEVERITY (S) CLASS OF RISK (L X S) RISK MATRIX

5 5 10 15 20 25
LIKELIHOOD (L)

1. IMPROBABLE. 1. NEGLIGIBLE. 4 4 8 12 16 20
HIGH = 15 – 25
2. REMOTE. 2. MINOR. 3 3 6 9 12 15
3. PROBABLE 3. REPORTABLE. MEDIUM = 07 – 14
2 2 4 6 8 10
4. OCCASIONAL. 4. SERIOUS. LOW = 01 - 06 1 1 2 3 4 5
5. FREQUENT 5. CATASTROPHIC.
1 2 3 4 5
SEVERITY (S)

NOTE: 1. Risk assessment must be addressed to workers by work in charge before starting job.
2. Risk assessment is a continuous process hence to be reviewed depending on activity & risk involved
 Page no. : 2 of 4
Date of Issue : 20/12/2023
Revision : 00
RISK ASSESSMENT Document ref : P166-NSE-TS-MS-
MEP-MECH-00001
Project :P-166
ACTIVITY: P166-NSE-TS-MS-MEP-MECH-00001

RISK CONTROLLED RESIDUAL

S. N. HAZARD HARM CONTROL MEASURES
LXS L M H BY WHOM RISK
1. Proper scaffoldings/ ladders to be used.
2. All openings are properly covered.
3. Unnecessary materials or tools from the top of the ladders or the scaffolds is not
allowed, proper helmet, safety shoes & hand gloves to be used.
4. Proper scaffolding, platform & ladder to be check by competent/certified personnel
Falling Objects Foreman,
only.
1 (Fall From Height) During Broken limbs, Fatality 16 H Engineer & 4
5. Foreman to be instructed for safe keeping of tools, power tools and unnecessary
installation process Safety Officer
material in the platform.
6. Personnel who will be working at height shall be given a proper information, training &
instructions.
7. Throwing of materials is strictly prohibited.

1. All the workers must have helmets, hand gloves and safety shoes.
2. The employees must be made aware of the requirements of this assessment.
3. Lift area to be demarcated to restrict access.
4. Ensure safe slinging and ringing practices.
Lifting Operation
5. Do not stand beneath the load. Foreman,
(Overloading and overturning
2 Broken limbs, Fatality 20 H 6. Lifting plan to be made prior to lifting operation. Engineer & 4
of equipment’s / materials, Fall
7. Coordinate with the main contractor for proper lifting operation. Safety Officer
of Load)
8. Only certified operator and bankman will do the operation.
9. Ensure all lifting equipment to be regularly monitored or checked by assigned
personnel.

1. Employees are made aware of the risks associated with manual handling and the
required kinetic lifting techniques during toolbox talks and awareness campaigns.
Musculoskeletal 2. A Toolbox Talk Training should be conducted before manual handling operation.
injuries from 3. All person should allow only to lift / carry the materials or equipment as per their
Workers &
3 Manual Handling torque/sudden 12 M capacity. 3
movement of hand 4. Lifting plan to be made prior to manual lifting operation.
Foreman
tools and lifting 5. Mechanization should be done to minimize exposure.
6. Use safe lifting practices, keep the weight as close to you as possible, involve extra
people for as needed.
 7. Carry out housekeeping before the manual lifting.
1. Proper machine maintenance.
2. Implement an existing energy control program or develop a site-specific program that
addresses how employees will be protected from unexpected start-up and/or
Fire or explosion risk release of stored energy during servicing and maintaining machines and equipment.
& Fatality 3. Control procedures will include the following:
Vibration of machine a.) Shutoff machines and equipment using established procedures.
Foreman,
Unexpected Start-up of equipment during use b.) Ensure that each authorized employee places a lockout or tagout device on each
4 20 H Engineer & 4
electrical tools can affect fingers, energy isolating device.
arms and hand in c.) Relieve, disconnect, or restrain all potentially stored hazardous or residual energy. Safety Officer
long term to disability d.) Verify isolation using test procedures before beginning work.
cuts of body parts e.) Ensure that locks and tags are only removed by the authorized employee.
f.) Prior to returning machine or equipment to normal operation, replace and reactivate
all safeguards and remove all locks and tags.

1. Implement a hearing conversation

Foreman,
program when noise levels exceed permissible levels in the workplace.
5 Noise Exposure Hearing Problem 12 M Engineer & 3
2. Keep unnecessary response near noisy operation
Safety Officer
1. Use proper tools/cutter.
2. Training should be done; PPE must be whorn at all times. Foreman,
Pipe Cutting (exposure to
6 Cuts & Fatality 20 H 3. Remove all the debris, sharp object cut edges in safe place. Engineer & 4
sharp object or tools)
4. Maintain good housekeeping and orderliness in workplace. Safety Officer

1. Maintain good housekeeping and orderliness in workplace.

Trench excavation / backfilling 2. The employees must be made aware of the requirements of this assessment. Foreman,
7 (concrete dust & debris Breathing problems 9 M 3. Hand gloves, eye protection, dust proof mask must be worn at all times. Engineer & 3
exposure) upon laying of pipes 4. Work area to be demarcated to restrict access. Safety Officer

1. Use of ground fault circuit interrupter, assured equipment grounding program.

2. Inspect equipment and hand tools and verify safety features before use.
3. Do not use defective equipment and hand tools.
Vibration of
4. Secure proper storage of equipment and hand tools when not in use..
equipment during use
Use of Equipment and Hand 5. Maintain equipment so that it is properly balance and has no loose or worn out parts Foreman,
can affect fingers,
8 Tools 12 M and blades/cutters are sharp, etc. Engineer & 3
arms and hand in
6. To protect against vibration, workers should keep their hands warm to get a good flow Safety Officer
long term to disability
of blood into the fingers by:
cuts of body parts
➢ Wearing gloves
➢ Massaging Fingers
 1. Discharge all potential power.
2. The employees must be made aware of the requirements of this assessment.
3. All electricity to site has circuit breakers fitted.
4. All electrical tools to be checked regularly.
Burns or fatalities 5. Ensure all socket outlets are in good conditions.
Foreman,
may arise from 6. All electrical tools should be as per specified voltage or capacity.
9 Potential of Electric Shock 20 H Engineer & 4
contact with live 7. Training should be done on how to use the electrical equipment.
conductors 8. Use of Fire Protective Equipment (Fire Blanket & Fire Extinguishers to be provided in Safety Officer
work place).
9. Secure safe access. Establish and maintain evacuation routes and an alerting system
to notify individuals in case an evacuation become necessary.

ASSESSED BY
REV. No:02
(NAME): SPOTS ELECTROMECHANICAL WORKS L.L.C SIGNATURE:
APPROVED BY
REV. DATE:29/12/2023
(NAME): JOUZY CONSULTING ENGINEERS SIGNATURE: