Q 73
P.W.E. Hong Kong.
141. North Point Balance Tank.-The work under this heading consists of:—
A Service Reservoir having a capacity of 1.146 million gallons and a top water level of 240 A.O.D.
1 12" dia. supply and delivery main from Shaukiwan Road to the reservoir.
The reservoir was completed in November and by the end of the year it had been filled and left under test.
The reservoir has a flow area of 10,894 square feet and an average effective depth of 15.5 feet.
There is a division wall 12 feet in height to facilitate cleaning and repairs and the roof is of reinforced concrete 4$\frac{1}{2}$″ in thickness carried on reinforced concrete beams.
The total quantity of excavation removed was 13,010 cubic yards whilst 2,230 cubic yards of plain cement concrete and 295 cubic yards reinforced concrete were used in the construction of the reservoir and contingent works.
Owing to delay in obtaining possession of the necessary land on which to lay the connecting main it was not possible to start main laying by the end of the year.
Estimates $80,000.00
Expenditure $48,044.88
142. New Principal Mains in City.-The following mains were laid during the year:-
2060 feet of 18" C.I. main from the Monument at Happy Valley via. Bowrington Canal Road west to Hennessy Road and 98 feet of 6" W.0. main. 1164 feet of 15″ C.I. main in Yee Woo Street between Great George Street and Causeway Bay. 1482 feet of 12″ C.I. main in Shaukiwan Road between Bay View Police Station and the Hong Kong Electric Company's Works. 84 feet of 6" main across Yee Wo Street to Great George Street. 270 feet of 8" main in Shaukiwan Road from Lau Sin Street towards Tai Hang. 504 feet of 6" main in Tin Hau Temple Road. 279 feet of temporary 8" piping to West Point Filters from the Rising Mains. Estimates $20,000.00 Expenditure $17,704.47