59
satisfactorily completed in July.
The tank has a capacity of 82,000 gallons and is divided into two sections by a mass concrete division wall. The side walls are of mass concrete, and the roof of reinforced concrete beam and slab design carried on reinforced concrete columns. The invert is sloped up near the side walls thus reducing the depth of the walls.
Mainlaying was completed in June, the following lengths were laid during the year:—592 feet of 4" spun iron piping to connect the new tank to the distribution system from Stanley Mound Service Reservoir and 1,767 feet of 3″ wrought iron piping to supply the various blocks of quarters. Work of installing inside services for the cold water supply to all the gaol buildings and quarters was continued and was practically completed at the end of the year.
The
Work was in progress in connection with electric lights, fans and power, telephones and alarm bells.
Expenditure
$2,084,219.64
Expenditure to 31st Dec., 1936...$3,534,930.96
TYTAM TUK CATCHWATERS.
223. Sluices for Tytam Tuk East Catchwater:—This work was referred to in paragraph 215 of last year's Report. A contract for $5,432.45 for the construction of a byepass channel to divert the flow of the Tytam Tuk East Catchwater to a neighbouring stream bed when the Tytam Tuk Reservoir approaches full capacity was signed with Messrs. Jum Yee & Co. on the 20th February. Good progress was made with the contract and the concrete work was completed by the end of May.
The two roller sluice gates for controlling the flow of water were supplied through the Crown Agents at a cost of £632-0-0 f.o.b. by Messrs. Ransomes & Rapier.
The gates arrived from England on 1st May and were erected departmentally the work being completed by the end of June.
224. Recording Instruments-In order to obtain more accurate information for the design of future catchwaters measuring apparatus was installed in the Pottinger Peak Catchwater. Enquiries were made from makers in England and a Lea Compound Excelsior Type Recording Instrument was purchased through the Crown Agents at a cost of £95-0-0. This instrument records the flow of the catchwater through a trapezoidal flume constructed near the outfall. A small recorder house was built in brickwork by the side of the catchwater to accommodate the recording apparatus.