Sessional_Paper_1892 — Page 127

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35. Meters.--Seventy meters varying from of an inch to three inches are in use for measuring water supplied to Government Buildings and for trade purposes.

The expenditure under this heading amounts to $2,785.88.

36. Peak Water Supply.-The works for the supply of water to the Hill District which consist of a pumping station on the Bonham Road at a level of 160 feet above Ordnance Datum in which is installed a triple expansion condensing Engine (High Pressure Cylinder 5 inches diameter. Inter- mediate Pressure Cylinder 9 inches diameter. Low Pressure Cylinder 14 inches diameter) of the Worthington Duplex type actuating double ram pumps 28 inches diameter stroke 9 inches and an hydraulic duplex motor, diameter of cylinders 14 inches actuating differential rams 32 and 5% inches diameter stroke 3 feet. The engine is supplied with steam by a vertical boiler of Beely's Field tube type.

37. In the case of the hydraulic motor the power is obtained from the. Pokfoolum Service Reservoir situated on a level of 437 feet above Ordnance Datum. The water after passing through the power cylinder exhausts into the water mains supplying the City. An average back pressure in the exhaust of 25 lbs. on the square inch is maintained by means of a bye-pass fitted with a reducing valve regulated to close on the back pressure exceeding 25 fbs. on the square inch.

The normal piston speed is 65 feet per minute.

The engine and boiler were supplied by Messrs. JAMES SIMPSON & CO., of Pimlico and the Hydraulic Motor by Messrs. HATHON DAVEY & Co., of London and Leeds.

Provision has also been made in this station for the erection of another hydraulic motor to pump to the reservoir south of the Pokfoolum Filter Beds.

A small reservoir has been constructed in the nullah adjoining the station for supplying water to the steam engine condenser.

38. From this station the water is pumped to a reservoir at the Peak at a level of 1,780 feet above Ordnance Datum through a 3-inch rising main 4,390 feet in length laid with hydraulic piping fitted together with screwed socket joints.

This main is for the greater part of its length on the surface and owing to the steep declivity of the hill side secured at intervals with holding down bolts.

Provision is made for expansion and contraction by the irregularity of the line adopted.

39. From the reservoir at the Peak the water is distributed through 1.93 miles of 3 inch piping. Three miles of 2 inch piping and 635 yards of 11⁄2 inch piping.

The capacity of the reservoir at the Peak is 10,000 gallons.

40. Five other covered reservoirs have been constructed, one near the "Eyrie," one at Mount Kellet, two at Mount Gough, one at Magazine Gap, having a joint capacity of 40,000 gallons. These works are now practically completed. Forty-four houses, including Mount Austin Hotel, in the Hill District have been connected with the water mains.

The population of the Peak at the last census was 1,100 and the consumption of water is about 20,000 gallons per day.

41. The whole of this work with the exception of the erection of the pumping station buildings has been carried out by this department without the intervention of a contractor.

The money voted was $32,800 and the expenditure has been $28,892.39.

42. Sewerage Works City of Victoria.-The sewerage works in the High Level District were completed in June last and comprise 3.61 miles of main sewers varying from 12 inches to 6 inches in diameter provided with manholes, ventilators and flushing arrangements. Several houses in this district have been connected with the new sewers.

43. The sewerage works of District No. 6 W. were commenced in March those of No. 5 W. September and those in No. 4 W. in November last.

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Of these the sewers in district No. 6 W. have been completed comprising 4.81 miles of sewers varying from 18 inches to 6 inches diameter and provided with manholes, ventilators and flushing arrangements, 1.62 miles of sewers have been completed in District No. 5 W. and half a mile in No. 4 W.

Making the total length of sewers laid within the City during 1891 nine miles.

44. One hundred and eighty gullies have been fixed in these districts.

45. The work of training the nullahs in the Western District of the City has also been completed. 46. The money voted for these works last year was $67,000 and the amount expended $54,737.29. This sum includes $1,262.34 expended in connecting house drains with the public sewers.

47. Hung Hom Sewerage. The sewerage of the Village of Hung Hom (population 5,185) commenced in October 1890 has been completed and the drainage of every house in the Village re- arranged and connected with the new system.

This work comprises 12 miles of main sewers 9 inches, and 6 inches in diameter provided with the necessary manholes, ventilators and flushing arrangements also the concreting and channelling of 1,250 square yards of lanes and alleyways.

The money voted for this work was $9,000, the total amount expended $8,120.63.