Q 78
HEAD (B) WATER WORKS.
(a) SUPPLY TO ALBANY,
133. This work was referred to in paragraph 236 of last year's Departmental Report.
(1) Pumping Station.
134. The installation of the pumps and motors was completed during January, and pumping commenced on February 3rd.
135. The three pumps which were supplied by Messrs. W. H. Allen Sons & Co., Ltd. are of the single stage centrifugal type with a 9″ suction and 8″ delivery each being driven by a 98 horse power squirrel cage electric motor.
136. The installation was designed to deliver 5,000,000 gallons in twenty hours, and on full test the delivery to the Albany gauge basin was at the rate of 5,568,000 gallons.
137. The building was completed during February at a total cost of $9,062.86. This was in excess of the tender owing to the necessity for a heavy retaining wall around the site and extra piling in the foundations.
(2) Pipe Lines.
138. The lengths of 24″ diameter suction and 21″ diameter delivery mains laid in connection with the scheme were 540 and 1,080 feet respectively. Both mains are of mild steel with cement mortar lining and bitumen and hessian outside wrapping.
(b) SUPPLY TO PEAK ROAD.
139. This work was referred to in paragraph 237 of last year's Departmental Report.
(1) Pumping Station.
140. The installation of the pumps and motors was completed during March, and by means of a cross connection from the delivery main at May Road water was pumped up to the old 750 feet tank from the 13th April until the new service reservoir was completed.
141. The installation supplied by Messrs. W. H. Allen & Co. consists of three 3-stage centrifugal pumps with 4″ suction and 3″ delivery each driven by a squirrel cage electric motor of 33 horse power. The pumps had been designed to supply 600,000 gallons to the new Peak Road service reservoir in twenty hours, and on test the delivery was at the rate of 619,000 gallons.
142. The building was completed in April, the final amount of this contract being $8,706.53, which was slightly in excess of the tender mainly owing to the large quantity of rock excavation.
(2) Pipe Line.
143. The pipe line from the pumping station to the Peak Road service reservoir is 8″ nominal diameter, constructed of mild steel with cement mortar lining, bitumen hessian wrapping and is 1,250 feet in length.