File:Notices of the proceedings at the meetings of the members of the Royal Institution of Great Britain with abstracts of the discourses (1902) (14803481413).jpg

Identifier: noticesofproceed1719roya (find matches)
Title: Notices of the proceedings at the meetings of the members of the Royal Institution of Great Britain with abstracts of the discourses
Year: 1851 (1850s)
Authors: Royal Institution of Great Britain
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Publisher: London : William Clowes and Sons
Contributing Library: University of Illinois Urbana-Champaign
Digitizing Sponsor: University of Illinois Urbana-Champaign

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1902.) on the Nile Dams and Reservoir. 193 designing and manufacture of the sluice3 and lock-gates; 140 of thesluices are 23 ft. high by 6 ft. 6 in. wide, and 40 of them half thatheight; 130 of the sluices are on the Stoney principle, withrollers, and the remainder move on sliding surfaces. The larger ofthe Stoney sluices weigh 14 tons, and are capable of being moved byhand under a head of water producing a pressure of 450 tons againstthe sluice. There are five lock-gates, 32 ft. wide, and varying in height upto 60 ft. They are of an entirely different type to ordinary foldinglock-gates, being hung from the top on rollers, and moving like asliding coach-house door. This arrangement was adopted for safety,as 10U0 million tons of water are stored up above the lock-gates,and each of the two upper gates is made strong enough to hold upthe water, assuming the four other gates were destroyed (Fig 6). When the river is rising, the sluices will all be open, and the redwater will pass freely t

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