Case Study: Underpinning

Topics: Concrete, Drilling rig, Grout Pages: 6 (1533 words) Published: December 20, 2012
1.0 Case Study

1.1Background of project
Name of project: Projek Mass Rapid Transit Lembah Kelang : Jajaran Sungai Buloh-Kajang (Underground Works-Installation of Micro Pile For Underpinning Works Location of project: Pasar Seni LRT Station

Reason: Adding new foundation
Method of Underpinning:In-Situ
Construction start: 24th of September 2012
Cost: RM 20,000 per pile
No of pile: 74 pile
Contact person: Mr. Safuan Bin Suhaimi (Site Supervisor)

1.2Company Background
MMC Corporation Berhad (MMC) is a utilities and infrastructure group with interests in Transport & Logistics, Energy & Utilities and Engineering & Construction. MMC's key businesses include the Port of Tanjung Pelepas and Johor Port in the Transport & Logistics segment. In Energy & Utilities, MMC has controlling stakes in Malakoff, Gas Malaysia and Aliran Ihsan. MMC Gamuda KVMRT (PDP) is the Project Delivery Partner for the Klang Valley Mass Rapid Transit (KVMRT) project – Sungai-Buloh-Kajang (SBK) line, the country's largest infrastructure project to date. MMC's involvement in this Project is in line with the New Economic Model's strategic reform initiative to re-energise the private sector as one engine of economic growth. MMC Engineering & Construction provides design & build, turnkey and EPCC solutions in all major engineering disciplines, including civil & structural, plant design & mechanical, electrical and process control.

MMC Corporation Berhad 
Level 8, Kompleks Antarabangsa
Jalan Sultan Ismail
50250 Kuala Lumpur Malaysia 
Tel: (603) 2142 4777
Fax: (603) 2148 9887 

1.3 Method Statement of Installation Micro Pile
1.3.1General Description
1. This method statement describes the procedures for the installation of micro pile. The installation of micro pile shall involve the following : * Pre-construction
i. Soil investigation
ii. Preparation of shop drawing
iii. Survey and subsequent joint survey with supervision team iv. Services and utilizes checking
* Construction
v. Drilling
vi. Clearing/Flushing of drill holes
vii. Installation of reinforcement
viii. Grouting/concreting

1.3.2 Materials
2. Cement – cement grout shall be mixed form ordinary Portland cement 3. Non-Shrink grout additives-Intraplast z(prevent grout shrinkage and improve workability) 4. Reinforcement as specified in the drawings

5. Steel casing to prevent collapse during boring works 6. Water stabilizing fluid to prevent collapse of borehole wall beneath the sleeve casing 7. Permanent casing(if required)

1.3.3 Plant and Equipment
No| Equipment| Description|
1| Survey Equipment| For setting out pile point coordinates and levels| 2| Boring Rig| Drilling of pile bores to the required lengths| 3| Service crane| To install reinforcement and general lifting works| 4| Excavator/backhoe| For excavation works|

5| Air compressor| To supply compressed air to tools|
6| Casing and drilling tools| Boring of pile shaft|
7| Welding set| For welding purposes|
8| Grout mixer,grout pump,water tank, water pump| To mix cement grout for grouting works| 9| Tremie hose| Placing of cement grout into pile shaft|

1.3.4 Manpower
No| Division| Type of Man power| Job function|
1| Safety and environment| Safety and environment officer| Implement site safety measures at site| 2| Work operation| Supervisor| Supervising construction activities| 3| Work operation| Surveyor/chainmen| Setting out of works and checking of completed works| 4| Work Operation| Qualified Welder| To carry out welding works| 5| Work operation| General worker| Carrying out work on the ground| 6| Work operation|...
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