Al Rajhi Projects and Construction LLC

WORK PROCEDUREPROJECT: PROJECT NAMERef No. FOUN/06

PAGE 1 OF 2

SECTION:DATE OF ISSUEDec.2012

FOUNDATIONS

SUBJECT: BY:QA/QC ENGINEER

CONTROL OF SEWERAGE AND SURFACE WATER DRAINAGEAPPROVED BY:QHSE MANAGER

ACTIONVERIFY

1.SCOPE

This procedure covers controls to be carried out during construction of underground sewerage and surface water drainage works.

2.PROCEDURE

.1All sewerage and surface water drainage works will be carried out in accordance with the contract specification and good practice.

Where specifications are not provided or are incomplete, the matter shall be referred back to the Consultant for additional information.

.2Depending upon the complexity of the work, and the requirements of the PQP, a method statement shall be prepared and approved by the Consultant which shall include:

i)Proposed plant and equipment.ii)Jointing technique.iii)Trench support (in case of deep excavation).iv)Manufacturers jointing and installation details and test certificates (where relevant).v)Sequence of activities.vi)Compaction method and quality of fill material.vii)Test plan.

.3Check delivery order and certificates against the specification and examine marks, labels and condition of material and components.

.4Unload and handle materials and components with care to minimise damage and soiling.

ProjectEngineer

ProjectEngineer

Store-keeper/SiteEngineer

Store-keeper/SiteEngineer

Request forInformation

MethodStatement

WORK PROCEDUREPROJECT: PROJECT NAMERef No. FOUN/06

PAGE 2 OF 2

SECTION:DATE OF ISSUEDec. 2012

FOUNDATIONS

SUBJECT: BY:QA/QC ENGINEER

CONTROL OF SEWERAGE AND SURFACE WATER DRAINAGEAPPROVED BY:QHSE MANAGER

ACTIONVERIFY

.5Before commencing excavation, fence or board the area of work so as to prevent unauthorised access. Provide adequate safeguards, e.g. gangways, handrails, notices or direction boards and lighting at night.

.6Contact local authority departments to obtain details of existing underground services. Proper marking will be employed on the site to avoid damage to any adjacent services.

.7Provide adequate trench support to retain the sides of excavations and ensure the safe and proper construction of works and completion of backfilling.

.8Spoil heaps stacked material and vehicles to be kept at a distance of more than the trench depth from the trench.

.9Temporary supports to excavations will be maintained in position until sufficient backfill has been placed and compacted to ensure the stability of the sides of the excavation.

.10Employ the proper jointing method as recommended by pipe manufacturer. Ensure that jointing faces are dry, clean and free from soil or bedding particles.

.11Finalise an intermediate test plan and water testing to be done to check water tightness of pipeline.

3.DOCUMENTATION

.1Appendix FOUN/06A and Appendix FOUN/06/B, shall be used to monitor drainage construction. Approval to proceed will be given by the QA/QC.

Site Engineer/Safety Officer

SiteEngineer

Site Engr/Gen. Foreman

SiteEngr/Gen.Foreman

SiteEngr/Gen.Foreman

Gen. Foreman

SiteEngineer

QA/QC

FOUN/06/A, Records/Drawingsobtained from localdepartments

FOUN/06/A

Test Plan

Check sheets

PROJECT: PROJECT NAMESITE NO.:

CHECK SHEET FOR SEWERAGE AND SURFACE WATER DRAINAGESheet No.

SUBCONTRACTOR: CLIENT

SECTION OF WORK ____________________________ LOCATION _________________

STAGEITEMCheckedbyDATE

PIPEWORK ORCHANNEL1. Set line and level.SU

2. Check location of underground services before commencement of excavation. SE

3. Check inverts levels and gradients.SU

4. Check correct diameter and material. Also check the compatibility of pipes, fittings and accessories for jointing e.g. ring seals, solvent cements, lubricants.

SE

5. Check position and no. of connections.SE

6. Check availability of trench support material.GF

7. Check bedding and granular surround.GF

8. Backfill to specification material/compaction.SE

9. Ensure protection of laid pipeline from damage by construction traffic.SE

10. Pipe run rodded and tested.PE/MEP

APPROVAL TO PROCEEDQA/QC

GULLEYCONNECTION1. Check correct gulley used.SE

2. Check position and level of gulley.SE/SU

3. Check correct surround.GF

4. Check gulley grid.GF

5. Check gulley cleaned out.GF

APPROVAL TO PROCEEDQA/QC

QA/QC Quality Assurance/Quality Control, PE Project Engineer, SE Site Engineer,SU Surveyor, MEP MEP Coordinator, GF General Foreman

PROJECT: PROJECT NAMESITE NO.:

CHECK SHEET FOR SEWERAGE AND SURFACE WATER MANHOLESSheet No.

SECTION OF WORK: ____________________________ MANHOLE No: ______________

STAGEITEMCheckedbyDATE

PREPARATION1. Set position of manhole and base level.SE/SU

2. Check base concrete.GF

3. Check correct base rings (outlets).SE

4. Check rings/reducer/step irons.SE

5. Checks cover slab level and location of opening.SE

6. Check concrete surround.GF

7. Check correct cover/brick bedding/concrete haunch.GF

8. Check manhole benching.GF

9. Clean out manhole.GF

APPROVAL TO PROCEEDQA/QC

QA/QC Quality Assurance/Quality Control, SE Site Engineer, SU, - Surveyor, GF General Foreman