Bowden-Smith, Edward Cyril · New York, D. Van Nostrand Company · leaf 46
om the surface to the cutting edge is about 25 feet. Insome cases the floor of the tubbing, which is composedof box-section, cast-iron plates, filled with concrete, issubjected to an external pressure of 100 tons. The inletmanhole seen to the left of the tubbing is 17 feet deep,from the invert of… … Ejectors in Cast-iron Tubbing(Sharia, Clot Bey, Cairo) CENTRIFUGAL PUMPS AND EJECTORS 27 collecting sewer, possibly two miles distant, or directto the disposal works by a main sealed sewer. The air main enters the chamber through the upper-most ring shown to the left, and the exhaust passes outat…
Pumping machinery
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