Worthen, William Ezra, 1819-1897, [from old catalog] ed · New York, Appleton · leaf 435
reat advantage in reducing the fall, increasing the weightof the hammer, and the frequency of the blows. As generally driven, and ofaverage size, when the whole weight is to be supported by the pile, ten tons may be considered a usual load, but whenadditional support is received from com-pacted… … Fig. 1006. Fig. 1007. Figs. 1006 and 1007 represent plan and elevation of a pile foundation ; thepiles are usually from 10 to 14 top diameter, and driven at about 3 feet be-tween centres. The tops are cut off square and capped with timber the caps ENGINEERING DRAWING. 419 treenailed or ragbolted to…
Mechanical drawing
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