Twenty Per Cent. Increase Since 1920: Extensions of the Waterworks Mains Appended to the annual report and statement of accounts of the Shanghai Waterworks Ca., Ld. is a very interesting resume of the operations of the company in supplying the Settlement with water during 1921. This has been compile ed by F. B. Pitcairn, engineer-in-chief and manager of the company.
He says:—During the year 1921 very heavy demands were made on the company's pumps and trunk mains as there was considerable delay in getting the new pumps, including the western district' scheme, into commission, so that it was found impossible to keep the full head of pressure called for in the company's agreement with the Council during a short period every day until the latter part of the year.
The total amount of water delivered into the company's distribution system during the year was:—1921 8,292,069,769 gallons.
1920 6,881,225,230
An increase of: 1,410,844,539 gallons, equivalent to 20.5 per cent, The maximum delivered in any one day was 30,426,490 gallons against a maximum of 24,894,315 gallons in 1920.
New Works sup Extensions.
The two new pumps mentioned in last year's report, each capable of pumping 300,000 gallons per hour, have been put into commission No, 7 in October, and No, 8 in November.
The western district reservoirs were put into commission in July with two small temporary pumps driven by motors hired from the Municipal Council. This improved the pressure in the western district very considerably. The two permanent pumps each driven by a 225 Li. P. electric motor were put into commission in December with very satisfactory results, and two more sets of motors and pumps have been ordered which should be in commission before next hot. weather.
Very good progress has been made with the laying of the 40in., 38in., and 36in. steel pumping main, which should be in commission for its whole length, ie. from the pumping station at Yangtszepoo to the Kiangse Road aqueduct before the hot weather.
The company will then have the following increase of plant over the summer of 1921 available including new pumps at Yangtszepoo and the western district. scheme Main Pumps 80 per cent.
Pumping Mains 78 per cent.
Very considerable extensions to the company's mains hare been made during the year 11,282 ft. of 12in and over have been laid.
24,983 ft. of Gin. and Qin. have been laid, also 4,125 ft. of 6in. have been relaid in din,
Text read from the printed page and cleaned; old type leaves the occasional error.