1.A masonry dam of trapezoidal cross section, with one face vertical, has a thickness of 2 ft at the top and 10 ft at thebottom. It is 22 ft high and has a horizontal base. The vertical face is subjected to water pressure, the water standing 15 ftabove the base. The weight of the masonry is 150 lb per cu ft. Where will the resultant pressure intersect the base, andwhat will be the intensity of pressure at the heel andthe toe assuming: (a) that there is no hydrostatic uplift; (b) thatthere is hydrostatic uplift which varies uniformly form that due to a full head of 15 ft at the heel to zero at the toe.

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A masonry dam of trapezoidal cross section, with one face vertical, has a thickness of 2 ft at the top and 10 ft at the bottom. It is 22 ft high and has a horizontal base. The vertical face is subjected to water pressure, the water standing 15 ft above the base. The weight of the masonry is 150 Ib per cu ft. Where will the resultant pressure intersect the base, and what will be the intensity of pressure at the heel and at the toe assuming: (a) that there is no hydrostatic uplift; (b) that there is hydrostatic uplift which varies uniformly form that due to a full head of 15 ft at the heel to zero at the toe.

A masonry dam of trapezoidal cross section, with one face vertical, has a thickness of 2 ft at the top and 10 ft at the bottom. It is 22 ft high and has a horizontal base. The vertical face is subjected to water pressure, the water standing 15 ft above the base. The weight of the masonry is 150 Ib per cu ft. Where will the resultant pressure intersect the base, and what will be the intensity of pressure at the heel and at the toe assuming: (a) that there is no hydrostatic uplift; (b) that there is hydrostatic uplift which varies uniformly form that due to a full head of 15 ft at the heel to zero at the toe.

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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Question

1.
A masonry dam of trapezoidal cross section, with one face vertical, has a thickness of 2 ft at the top and 10 ft at the
bottom. It is 22 ft high and has a horizontal base. The vertical face is subjected to water pressure, the water standing 15 ft
above the base. The weight of the masonry is 150 lb per cu ft. Where will the resultant pressure intersect the base, and
what will be the intensity of pressure at the heel and
the toe assuming: (a) that there is no hydrostatic uplift; (b) that
there is hydrostatic uplift which varies uniformly form that due to a full head of 15 ft at the heel to zero at the toe.

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