Arch-gravity dam

An arch-gravity dam or arch-gravity dam is a design for the shut-off building a dam. It is a mixture of a gravity dam and an arc dam. Part of the expense is removed over arching effect, the rest by the Kragträgerwirkung the wall. The necessary contact area is less than that of a gravity dam. The advantages are compared to a gravity dam in the lower volume of concrete and opposite of an arch dam to the lower load on the valley sides and reduced impact of shrinkage of the concrete.

Even walls that are formed in the lower part as arch dam and a gravity dam on which is placed above ( as in the Okertalsperre ), or vice versa, are considered arch-gravity dam. Such forms occur when it is convenient due to the valley shape.

Examples

  • Okertalsperre ( Germany )
  • Zervreila ( Switzerland )
  • Schlegeisspeicher ( Austria )
  • Karakaya Dam ( Turkey)
  • Hoover Dam (Boulder Dam ) (USA)
  • The Sayano - Schuschensker Reservoir has the highest arch-gravity dam with 242 m.
  • Glen Canyon Dam Arizona; USA ( Grand Canyon )
Dam#Gravity dams
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