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DAMS.
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is
consequently variable. The thrust at any point acts normally to the
immersed surface, and is not uniformly distributed over the entire
face, being zero at the water-line and greatest at the foot of the dam.
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A dam may yield by sliding on its base or at any horizontal joint, or by rotation about the toe.
In
masonry dams the weight of the dam acting vertically, and the pressure
of the water acting in directions normal to the surface immersed, are
the two components of a resultant, and stability will be secured when
this
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