Water-power; an outline of the development and application of the energy of flowing water . experiment, , by driving stakes and observing the forcerequired to draw them. The buoyancy of such a lining wouldin no case exceed 10 poimds per square foot, which for sleepers3 feet apart and stakes 5 feet is about 150 pounds pull on eachstake. This diminishes rapidly as the timber becomes water-soaked. In this method it is better to use 3-mch by 8-inchjoists for the sleepers. These are laid flatwise and bored witii3-inch holes for the stakes, which are formed with heads thatdo not go through the h
Water-power; an outline of the development and application of the energy of flowing water . experiment, , by driving stakes and observing the forcerequired to draw them. The buoyancy of such a lining wouldin no case exceed 10 poimds per square foot, which for sleepers3 feet apart and stakes 5 feet is about 150 pounds pull on eachstake. This diminishes rapidly as the timber becomes water-soaked. In this method it is better to use 3-mch by 8-inchjoists for the sleepers. These are laid flatwise and bored witii3-inch holes for the stakes, which are formed with heads thatdo not go through the holes. 400 CANALS. Figs. 193 and 194 represent another method of Hning-which may, under some conditions, be used with advantage,especially when the ground is not adapted to driving, as, forinstance, where the bed-rock is not far enough below surface of the canal, bed, and slopes, being finished tosubgrade, is covered with boards or planks running lengthwiseof the canal. These are not necessarily of uniform length,width, or thickness. Provided they are sound, they may be f^^fTT. Fig. 193.
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Keywords: ., bookcentury1900, bookdecade1910, booksubjecthydraulicengineering
