Visor Wall

The following article is from The Great Soviet Encyclopedia (1979). It might be outdated or ideologically biased.

Visor Wall

 

in hydraulic engineering, a vertical wall that closes the upper part of a water intake opening and whose lower edge is immersed beneath the minimum level of a hydraulic engineering installation. Visor walls, usually made of reinforced concrete, prevent floating ice and wood from entering water intake works.

The Great Soviet Encyclopedia, 3rd Edition (1970-1979). © 2010 The Gale Group, Inc. All rights reserved.