which is at the centerline of the dam surface. The y coordinate for the center
of pressure is
ycp = (922)3(1) / (12)(461)(922) + 461 = 614.7 ft
The pressure prism approach can be used to verify the results obtained.
Based on the pressure prism shown in the figure, the
magnitude of the resultant force is represented by the total volume
of the pressure prism.
This resultant force passes through the centroid of the pressure prism, which
is located at a distance of 922/3 = 307.3 ft from its base and lies in the vertical
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