. Railroad structures and estimates . 84 kt 624l0 40 lo 252 n \:i based on Woisbachs formula for very .short , or with a radius equal to the nuliuaof the pipe. To find friction head in feot multiply figures by I STAXDPIPES. 461 Standpipes. — There are two kinds of water columns or stand-pipes in general service, for conveniently supplying locomotiveswith water at locations remote from the water tank. Both aremuch alike excepting in the spout which is either telescopic orsemi-rigid. The telescopic spout has a vertical movement ofabout 5 ft., a convenience to accommodate the varyi
. Railroad structures and estimates . 84 kt 624l0 40 lo 252 n \:i based on Woisbachs formula for very .short , or with a radius equal to the nuliuaof the pipe. To find friction head in feot multiply figures by I STAXDPIPES. 461 Standpipes. — There are two kinds of water columns or stand-pipes in general service, for conveniently supplying locomotiveswith water at locations remote from the water tank. Both aremuch alike excepting in the spout which is either telescopic orsemi-rigid. The telescopic spout has a vertical movement ofabout 5 ft., a convenience to accommodate the varying heightsof locomotive tenders, and the semi-rigid about 2 ft. Thestandpipes are made of iron and steel and a great number ofstyles are produced; in all, however, the essential features con-sist of a main vertical pipe or column, a bell pedestal base, aspout, the valve mechanism and chamber or pit in which thevalves are set. Normally the water column spout stands par-allel with the track; on taking water the spout is drawn across. ^ xfl n feio Drain Concrete Floor STAND PIPE, RIGID TYPE rI ^s^ TELESCOPIC TYPE the track, a lever is pulled and the flow is immediate. Whensufficient water has been taken the lever is released and the wateris automatically- cut off, and the spout being is returnedto the position parallel to the track. As it takes up little room and is arranged to swing clear of thetracks when not in use, it is not considered a serious obstruction. Standpipes are used very extensively at stations, yards, andother places where convenient for quick service, and are gener-ally located so that one standpipe will serve two tracks. Standpipe, Telescopic Type. — A pipe line from the servicewater tank the full size of the standpipe is run connecting the 462 STANDPIPES. two as direct as possible, so as to render a high velocity supply;sometimes the connection is made with the city or towns highpressure mains and charged by meter. The standpipes in general use ar
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