No_8_August_1968 — Page 37

SINGAPORE

CIVIL ENGINEERING AND PUBLIC WORKS

JOHORE RIVER WATER SUPPLY SCHEME

ABOUT 30 m.g.d. of treated water

will pass though stage 1 of Singapore's M$23.75 million Johore River Water Supply Scheme. The scheme is designed for an ultimate yield of 60 m.g.d.

From an intake on the Johore River, water is drawn through four 36in. siphon pipes via a low lift pumping station to treatment works designed to cope with considerable variations in raw water quality.

Treated water is then pumped through 17 miles of 66in. bore thin- walled steel pipeline to link with the island's trunk main and distribution system. Many of the civil structures

BINNIE and PARTNERS

are built to handle the full output en- visaged when stage 2 is complete.

Interests in the scheme, which was inaugurated recently have been very much an international affair. Offshore currency was provided by the World Bank and contractors in Singapore, Malaya, Japan, Norway and the UK were concerned in the construction and supply of plant. The consulting engineers were the London firm of Binnie and Partners.

The works are located on the right bank of the Johore River about 11⁄21⁄2

consulting engineers

miles upstream of Kota Tinggi town. Site clearance of the headworks area, consisting of about 110 acres, began at the end of April, 1965, and head- works, earthwork and roads started three months later. Pipeline construc- tion began in August, 1965, followed by the two main headworks contracts in early November, 1965, and late January, 1966.

Erection of treatment plant started in August. 1966, and pumping plant in January, 1967. Commissioning work began at the end of May, 1967,

Far East BUILDER, August 1968.

Above: A 100ft. gap in the pipeline for special central span pipes over the river

Top left: 66in. batterfly valve chamber and Y-branch for connection to future pipeline

Left: Special central span pipes in place

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