. Railroad structures and estimates . Table is based on Weisbachof the pipe. s formula for verj- shortTo find friction head bends, or with a radius equal to the radius in feet multiply figures by STANDPIPES. 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 . Table is based on Weisbachof the pipe. s formula for verj- shortTo find friction head bends, or with a radius equal to the radius in feet multiply figures by STANDPIPES. 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.
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