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adopted amount appear applied assumed bank Bridges calculation carried catchment cause circumstances cloth compared connected consider considerable construction course culvert depth designed determine discharge districts Drawing earth edition effect embankment Engineer engravings enlarged equal escape evaporation evident examination example excess extent face fact fall float flood flow force give given ground height Illustrated India Iron irrigation laid land length less material matter mean ment method miles Mining mode natural necessary numerous observations passing pipe plates possible Practical pressure principles probably produced proportion puddle puddle wall quantity question Railway rain rainfall reason record regard reservoir resist result revised rule Second shown side slope springs storage stream sufficient supply surface System Tables taken thickness tion Treatise United valley valve vertical wall waste weir whole wood cuts
47 ページ - ... ascertain what power it exercises to resist the pressure of water. The pressure of water upon any plane surface immersed is known to be equal to the area of that surface, multiplied by the depth of its centre of gravity below the level of the water and by the weight of a unit of water. Generally speaking, the unit adopted in calculations is a foot; and the unit of water being taken at a cubic foot, weighing 62.5 Ibs., the resulting product from the multiplication of the three quantities will...