Monday, April 7, 2008

WMS Sewerage Manhole

WORKS METHOD STATEMENT

CONNECTING OF SEWERAGE MANHOLE FROM NEW MANHOLE TOWARDS EXISTING MANHOLE ACROSS JALAN BUKIT BINTANG
APPROVAL

TABLE OF CONTENTS


1.0 INTRODUCTION
2.0 DESIGN CONSTRAINTS AND COORDINATION
3.0 CONTRACTING METHODS
4.0 PROCUREMENT METHODS
5.0 RESOURCE PROVISIONS
6.0 LOGISTICS PROVISIONS
7.0 MATERIAL MANAGEMENT SYSTEMS
8.0 CONSTRUCTION METHODS AND TECHNOLOGY
9.0 CONSTRUCTION PHASING AND WORKFLOW
10.0 TRAFFIC MANAGEMENT AND MONITORING
11.0 SAFETY PROGRAMME
12.0 QUALITY ASSURANCE AND CONTROL PROGRAMMES
13.0 INDUSTRIAL RELATIONS POLICIES
14.0 ENVIRONMENTAL MONITORING PROGRAMMES

15.0 APPENDICES




1.0 INTRODUCTION
This Work Method Statement describes the connecting of sewerage manhole from new manhole towards existing manhole across Jalan Bukit Bintang

2.0 DESIGN CONSTRAINT
- Nil

3.0 CONTRACTING METHOD
The Condition of Contract has been reviewed by PCSB and particularly those conditions in respect of Sub-PCSBs. The conditions are bespoke for this project and therefore be required to be reflected in any form of Sub-contract utilized on the project.

4.0 PROCUREMENT METHODS
Since PCSB is liable for performance of any subcontractor, it is vital that only companies with proven track records in the relevant activity will be engaged as subcontractor.

It is acknowledge that before any part of the work can be sublet, the approval of the employer’s representative is required.

Refer to PHOS-CN-010 to PHOS-CN-030 for the contract procedure

5.0 RESOURCE PROVISIONS
5.1 Manpower / Labour
The number of manpower/labour to be used during the installation activities shall be identified in the Manpower record.


5.2 Plant Equipment / Machinery
- JCB Backhoe
- JCB Backhoe (Stone Breaker) – If Required
- 8 Tones Lorry
- 1 Tone Lorry
- Milling Machine
- 10 Tones Roller
- 2 Tones Roller / Compactor
- Temporary Camp
- MS Plate
- Mobile Crane (If required)

6.0 LOGISTICS PROVISION
The logistic control shall be accordance with the approved Site Logistic Plan

7.0 MATERIAL MANAGEMENT SYSTEMS
Refer to PHOS-CP-040 for Material Control Procedure

8.0 CONSTRUCTION METHODS AND TECHNOLOGY
8.1 General
The connecting of 225 mm clay pipe is to connect the Private Hospital Project sewerage line into the main sewer line.

8.2 Connection of Existing Manhole at Jalan Bukit Bintang
The proposed sewerage mains shall be connected to the existing manhole no
12 -1-12 located in Jalan Bukit Bintang from proposed MH – A1. The connection shall be carried out during night time preferably on a Saturday night to minimize the disruption to traffic. Before the commencement of the work the following shall be obtained for:
Dewan Bandaraya Kuala Lumpur (DBKL)
• Permission for the half closure of one direction traffic toward Jalan Tun Razak along Jalan Bukit Bintang where the connection is to be made.
• Approval of traffic management plan (To be submitted when making application to DBKL)
In water consortium, the connection work shall only commence when all the internal sewer line has been completed.
• Permission to make connection.
The sequence of connection work is as follow:
• Water is continuously pump into the upstream manhole of existing MH 12-1-12 so that the sludge in the manhole can be as cleaned as possible for working within
• Fresh air is continuously pump into the manhole so that it is safe for worker to work inside the manhole
• The existing road should be sawn cut and starting from the existing manhole excavation shall be carried out to expose the existing manhole
• Upon the exposure of the existing manhole, hacking shall be carried out by using pneumatic breaker to opening for connection. Care must be taken to ensure that the opening is just sufficient to accommodate the pipe to avoid excessive patching later.
• Immediately after the first pipe has been slotted into the existing manhole, the over break in the existing manhole shall be seal with epoxy.
• Trenching and laying of the 225 mm diameter sewer pipe shall continue until a stage where after backfilling a four metre road width can be formed.
• Backfill material shall be sand up to sub – grade level then follow by crusher run base course.
• A 25 mm thick steel plate of suitable width shall be placed on the crusher run base course and the traffic directed to this area.
• The pipe laying shall then be continued until it reaches manhole A1. The trench shall then be backfilled as aforesaid.
• The steel plate shall then be removed and aphetic concrete apply to the trench on top of the prepared base course.

9.0 CONSTRUCTION PHASING AND WORKFLOW
The phase on installation works is included in the Master Programmed.

10.0 TRAFFIC MANAGEMENT AND MONITORING
Make sure no obstruction to site traffic flow. Logistic and safety department will monitor closely

11.0 SAFETY PROGRAMME
11.1 Safety Hoarding, Temporary Works and Public Safety
The Logistic Manager shall be responsible for submission of plans and drawings to the relevant

The Logistic Manager shall provide adequate signboards at all strategic positions warning the public to keep away from the work site and erect temporary fencing and barriers where necessary around the site to prevent unauthorized trespassing during works.
11.2 Personal Safety
The HSSE Manager shall be responsible to take necessary measures to ensure that workers are constantly in safe working condition.




12.0 QUALITY ASSURANCE AND CONTROL PROGRAMMES
Please refer to appendix 15.1 for inspection test plan for underground cable laying

13.0 INDUSTRIAL RELATIONS POLICIES
- Not Applicable

14.0 ENVIRONMENT MONITORING PROGRAMMES
Please refer to PHOS-EMP-001 Environment Management Plan

15.0 APPENDICES
Appendix 15.1 – Inspection Test Plan
Appendix 15.2 – Job Safety Analysis

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