Hydraulic Structures: Fourth Edition

al., 1977) to appreciate that the protective facing of banks must reach down below the water surface to a sufficiently low level ...

by commercial shipping or larger pleasure boats. For further details on transients in constricted waterways, see also Blaauw and ...

locks of large dimensions in plan and high heads with more complex filling and emptying systems, designed to ensure uniform dis ...

construction as well as the maintenance of the locks; apart from that it accelerates the speedy passage of the vessels through t ...

are hermetically sealed and act as floats. The motion of the tilting gate is governed by a hydraulic motor, mounted at the botto ...

11.8.3 Locks with indirect filling and emptying Indirect filling and emptying of low- and medium-head locks is usually carried o ...

increase of the inflow of water into the locks filled by a long culvert should not exceed dQ/dt0.6 m^3 s^2 at the beginning of ...

with intermediate reservoirs. The economy of handling water is achieved at the cost of increased capital outlay and a longer tim ...

(generally, the opening of the filling system is non-linear). In the same way we could derive the equation for the time to equal ...

t^2  (H1/2 ht1/2) and Q. ForQmax, dQ/dht0, giving ht 4 9 H. (11.20) The maximum discharge occurs at 4/9Hif the filling sys ...

R1.35P/cos 40°1.75P. (11.21) For safety, the permissible tension is limited by RperD/600 (11.22) whereDis the displacement of ...

Ifbandb 1 are the thrift basin and lock widths, handh 1 are the basin and lock depth increments, nis the number of thrift basins ...

andhrare not strongly dependent on Has, usually, 2en$H. The value ofKis usually 0.5–0.7. Little is gained by increasing nbeyond ...

(never built)) the 35 m high ‘Falkirk wheel’ originally proposed as a Ferris type wheel has some unique features. The lift consi ...

11.11 Lock approaches Lock approaches provide the transition between the navigable river and the lock and must be designed both ...

The approach basins of navigation locks on still-water canals may be symmetrical or asymmetrical in plan and are usually relativ ...

The extent, location, and layout of an inland port are determined by its transfer capacity. For a small capacity a port can be b ...

Worked Example 11.1 A navigation lock, 200 m12 m in plan and with a 9.00 m head, is filled through two longitudinal conduits wi ...

Worked Example 11.2 A thrift lock has four basins of the same length (225 m) as the lock, and each of width 20 m. If the width o ...

Edwards, L.A. (1972) Inland Waterways of Great Britain, Imray, Laurie, Norie and Wilson, London. Fuehrer, M. (1985) Wechselbezie ...