A concrete dam of trapezoidal cross-section with one face vertical has a thickness of 3.5 m. at the top and 15 m. at the bottom. It is 20 m. high and has a horizontal base. The inclined face is subjected to a water pressure, standing 18 m. above the base. The specific gravity of the concrete is 2.4. Assume no hydrostatic uplift.

A concrete dam of trapezoidal cross-section with one face vertical has a thickness of 3.5 m. at the top and 15 m. at the bottom. It is 20 m. high and has a horizontal base. The inclined face is subjected to a water pressure, standing 18 m. above the base. The specific gravity of the concrete is 2.4. Assume no hydrostatic uplift.

Structural Analysis

6th Edition

ISBN:9781337630931

Author:KASSIMALI, Aslam.

Publisher:KASSIMALI, Aslam.

Chapter2: Loads On Structures

Section: Chapter Questions

Problem 1P

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Q: one

Question

A concrete dam of trapezoidal cross-section with one face vertical has a thickness of 3.5 m.
at the top and 15 m. at the bottom. It is 20 m. high and has a horizontal base. The inclined
face is subjected to a water pressure, standing 18 m. above the base. The specific gravity of
the concrete is 2.4. Assume no hydrostatic uplift.
Determine:
a. Total hydrostatic force acting perpendicular to the inclined surface
b. Location of resultant force which intersects the base from the toe
c. Pressure at heel and toe
3.

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