. Land drainage by means of pumps . ^4. £.e*37 / t\>-rr?cur>c/P/7ej \«__J ! £ Fig 2.—Plan and elevation of pumping plant, Louisa-Des Moines Drainage District No. 4, Iowa. charge pipe through the levee above high water and then down, withits end opening below low-water line, so as to secure a water is necessary in order that the pipe may act as a siphon and that LAND DRAINAGE BY MEANS OF PUMPS. 47 hence the static head on the pump may be only the difference inlevel between the water in the canal and the water in the river. Inthis case the pipe must have an opening at t
. Land drainage by means of pumps . ^4. £.e*37 / t\>-rr?cur>c/P/7ej \«__J ! £ Fig 2.—Plan and elevation of pumping plant, Louisa-Des Moines Drainage District No. 4, Iowa. charge pipe through the levee above high water and then down, withits end opening below low-water line, so as to secure a water is necessary in order that the pipe may act as a siphon and that LAND DRAINAGE BY MEANS OF PUMPS. 47 hence the static head on the pump may be only the difference inlevel between the water in the canal and the water in the river. Inthis case the pipe must have an opening at the highest point for usein priming the pump. This opening will also be used to admit airto break the seal, thus preventing water from flowing back by siphon
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Keywords: ., bookauthorunitedst, bookcentury1900, bookdecade1910, bookyear1915
