ASDSO Dam Safety Toolbox

Arch Dams

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The famed Hoover Dam, located along the Colorado River on the Nevada-Arizona border, is a prime example of a concrete arch-gravity dam. (Wikipedia)

Arch dams are typically rather thin in cross-section. The reservoir water forces acting on an arch dam are carried laterally into the abutments. The shape of the arch may resemble a segment of a circle or an ellipse, and the arch may be curved in the vertical plane as well. Such dams are usually constructed of a series of thin vertical blocks that are keyed together; barriers to stop water from flowing are provided between blocks. Variations of arch dams include multi-arch dams in which more than one curved section is used, and arch-gravity dams which combine some features of the two types of dams.

Life Cycle of Arch Dams

  1. Design and Construction of Arch Dams
  2. O&M of Arch Dams
  3. Decommissioning



Revision ID: 4617
Revision Date: 11/28/2022