Water-power; an outline of the development and application of the energy of flowing water . Fig. rg. the author in 1885 across the Saugus River in Massachusettsfor the purpose of measuring the flow of the stream. The headcreated by the dam did not need to be more than 3 feet, andit was not necessary to continue the measurement more than a 45 46 CONSTRUCTION OF MEASURING THE FLOW OF THE STREAM. 42 year, so that a substantial structure was not required. Thebed of the stream was gravel to an indefinite depth. At theproposed location of the dam the bed was levelled for a space12 feet up and
Water-power; an outline of the development and application of the energy of flowing water . Fig. rg. the author in 1885 across the Saugus River in Massachusettsfor the purpose of measuring the flow of the stream. The headcreated by the dam did not need to be more than 3 feet, andit was not necessary to continue the measurement more than a 45 46 CONSTRUCTION OF MEASURING THE FLOW OF THE STREAM. 42 year, so that a substantial structure was not required. Thebed of the stream was gravel to an indefinite depth. At theproposed location of the dam the bed was levelled for a space12 feet up and down stream, 24 feet transverse. In thisspace were imbedded across the stream three 8 X 8-inch sills,each confined by three i-inch iron rods driven through holesin the sill and 12 feet deep in the ground, the process of driv-ing forming a head on the rod which held the timbers these timbers was laid a flooring of 2-inch plank securelyspiked down, forming an apron over wiiich the water flowed 2or 3 inches deep until everything was ready for raising the up-stream timber, a row of spiling,* consisting of2-inch tongued and grooved plank, was driven to a depth of2 or 3 feet, and continued on each side to meet the embank-ment which formed the remainder of the dam. Along the sillthis spiling was cut off 2 or 3 inches below the top of the sill,a
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Keywords: ., bookcentury1900, bookdecade1910, booksubjecthydraulicengineering
