Synopsis
This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1900 Excerpt: ...reservoir, with a valve on the outside for cleaning the reservoir when filled with dirt up to the supply pipe. Sometimes the feed-pipe filling the reservoir is also made a supply pipe to the works, tapping the reservoir at the bottom. In this case, if the water is pumped to the reservoir from a pumping station, a valve outside the reservoir can be turned off, checking the inflow of water to the reservoir and permitting the full pressure of the pump to act on the supply pipes. If there are separate feed and supply pipes, a connection with a system of valves can be made outside, so that, by turning off a valve on each of the feed and supply pipes and opening a valve in a short pipe connecting the other pipes, a direct pressure from a pumping station supplying the reservoir can be obtained in case of fire. If the above arrangement can not be made, the supply pipe to the important points to be guarded against fire should be laid, so that connection can be made with a pump in the boiler room to give the necessary pressure. 269O. Size of Pipes for Main Reservoir.--The size of the feed and supply pipes will depend upon the extent and nature of the operations. An ordinary-sized water-main is 3 or 4 in. in diameter for a mine and the requirements connected therewith, using six boilers, 70 to 100 H. P. each, requiring a reservoir capacity of about 30,000 gallons, or possibly 50,000 gallons capacity in case of accident to the pumps. If the operations include 100 coke-ovens, a 4-inch watermain should be laid, allowing about 15,000 gallons additional tank capacity. Where extensive coking operations and coal washing are carried on, a 6-inch water-main and a 150,000-gallon reservoir will not be too large. Pipes should be laid below the frost line and well covered with soi...
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