LOCATION:  Bangkok, Thailand

CLIENT:     Department of Highways

PERIOD OF SERVICES : June 2005– October 2006

CONSTRUCTION COST:  9,500 MB

FINANCED BY:            -

ASSOCIATED FIRMS: Halcrow-PDI, AEC and TEC          

DESCRIPTION OF PROJECT:

Klong Prapa is generally a canal utilized for supplying raw water. Krom Klong Prapa Road, a royal contemplate project, was originated to improve raw water supplying as well as to serve extension of city civilization and also traffic congestion problem in urban area.  The project mainly aims to protect raw water quality during transmission from Chaopraya river to treatment plant inside the Bangkok town area having pollution.  It is decided to permanently divert raw water in open channel to closed system such as tunnel system.  Big volume of water  such as 72 m3/s and 12 m3/s will be transmitted by dual tunnel sizing 7.2 m ID and 3.2 m ID tunnel, respectively.  Total length of tunnel will be about 24 kilometers.

SCOPE OF SERVICES:

·         Detailed engineering design of TUNNEL as follows:

-       Intake and Outlet Structure

-       Tunnel Alignment

-       Tunnel Structure (including Lining, Shaft, Ground improvement)

-       Foundation analysis & design

-       Technical Specifications and Tender Documents

KEY FACTORS:

·         Geotechnical and structural design of tunnel, shaft, retaining wall, base slab, pilings and piled foundation

·         Preparation of drawings, specifications & calculations