International Correspondence Schools · Scranton, Pa. : The Colliery engineer co. · leaf 395
rength and stability tothe structure. The plank flooring e supports the derricks,hoisting machinery, building material, etc. The consistencyof the cofferdam filling rhust be such as to exclude thewater, and the weight and strength of the entire structuremust be sufficient to resist the pressure of… … Rule.— The pressure upon any vertical stirface due to thezveight of- the liquid is equal to the iveight of a prisvi of theliquid lifhose base has the same area as the vertical surface. RAILROAD CONSTRUCTION. 985 and ivhose altitude is the depth of the center of grainty of thevertical surface below…
Railroad engineering
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