. Comparative designs of Gravity and Ambursen dams. cted at he site, flashboards, rather than crest gates would be hollo\7 space in the dam permits the use of avery satisfactory form of flash board. Instead ofa wooden stanchion to break off, or a light ironrod to bend over, a pipe sleeve is set in concretethrough which a stiff steel rod loosely is prevented by a lightly packed stuffingbox. When it is desired to release the flashboards, the rod is turned halfway around andpulled down until the hook rests in a socket form-ed in the crest. The flash boar* then driftaway
. Comparative designs of Gravity and Ambursen dams. cted at he site, flashboards, rather than crest gates would be hollo\7 space in the dam permits the use of avery satisfactory form of flash board. Instead ofa wooden stanchion to break off, or a light ironrod to bend over, a pipe sleeve is set in concretethrough which a stiff steel rod loosely is prevented by a lightly packed stuffingbox. When it is desired to release the flashboards, the rod is turned halfway around andpulled down until the hook rests in a socket form-ed in the crest. The flash boar* then driftaway and are recovered v/hile the rod is out ofthe way of ice and logs, and can be raised intoposition the following year. See the Gates. Two 8 X 8* sluice gates are to be used, and are to be operated by hydraulic power. The deck isrecessed in two bays to such a depth as to allowof the gate on the outside with the stem passing in thru a stuffing box, ^fee detail on plans. Itis to be especially noted that this form of gate -58-. /^c/A SH 0^^ ^^ ^^
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Keywords: ., bookcentury1900, bookdecade1920, bookidcomparatived, bookyear1921
