. Bulletin of the Department of Agriculture. Agriculture; Agriculture. 22 BULLETIN 906, U. S. DEPARTMENT OF AGRICULTURE. Saugus, Calif., is 80 feet high and was built to protect a 16-inch rein- forced concrete pipe that runs gradually up grade for over 2,000 feet. The standpipe is made of 12-inch riveted steel pipe, supported by a steel windmill tower. Open boxes of concrete are built to about 15 feet in height and act as relief stands and at the same time are used as diversion boxes or for measuring water over weirs. Where pressures are too great to permit the installation of a stand- pi
. Bulletin of the Department of Agriculture. Agriculture; Agriculture. 22 BULLETIN 906, U. S. DEPARTMENT OF AGRICULTURE. Saugus, Calif., is 80 feet high and was built to protect a 16-inch rein- forced concrete pipe that runs gradually up grade for over 2,000 feet. The standpipe is made of 12-inch riveted steel pipe, supported by a steel windmill tower. Open boxes of concrete are built to about 15 feet in height and act as relief stands and at the same time are used as diversion boxes or for measuring water over weirs. Where pressures are too great to permit the installation of a stand- pipe, it is common to use air drums to relieve back pressure. Air drums are chambers that are partly full of air, the elasticity of the air preventing excessive pressures on the pipe. Air chambers have been used successfully in some installations, but there are so many cases of the air chamber being waterlogged at a critical time that a -PAPER RING SET INS/DE THIMBLE TO PREVENT ADHERING. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original United States. Dept. of Agriculture. [Washington, D. C. ?] : The Dept. : Supt. of Docs. , G. P. O.
Size: 1725px × 1448px
Photo credit: © Book Worm / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookauth, bookcentury1900, bookdecade1910, booksubjectagriculture
