A gravity dam of trapezoidal cross section with one face vertical and horizontal base is 22m high and has a thickness of 4m at the top. Water upstream stands 2m below the crest of the dam. The specific gravity of masonry is 2.4. Considering uplift pressure to vary uniformly from full hydrostatic pressure at the heel to zero at the toe: (1) Find the base width 'B' of the dam so that the resultant force will act the extremity of the middle third near the toe. (2) Compute the maximum compressive stresses acting against the base of the dam. (3) Compute the minimum compressive stresses acting against the base of the dam. Please attach your answers and solution in the space provided or at the end of this assessment.
A gravity dam of trapezoidal cross section with one face vertical and horizontal base is 22m high and has a thickness of 4m at the top. Water upstream stands 2m below the crest of the dam. The specific gravity of masonry is 2.4. Considering uplift pressure to vary uniformly from full hydrostatic pressure at the heel to zero at the toe: (1) Find the base width 'B' of the dam so that the resultant force will act the extremity of the middle third near the toe. (2) Compute the maximum compressive stresses acting against the base of the dam. (3) Compute the minimum compressive stresses acting against the base of the dam. Please attach your answers and solution in the space provided or at the end of this assessment.
Chapter2: Loads On Structures
Section: Chapter Questions
Problem 1P
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Transcribed Image Text:A gravity dam of trapezoidal cross section with one face vertical and horizontal base is 22m high and has a thickness of 4m at the
top. Water upstream stands 2m below the crest of the dam. The specific gravity of masonry is 2.4. Considering uplift pressure to
vary uniformly from full hydrostatic pressure at the heel to zero at the toe: (1) Find the base width 'B' of the dam so that the
resultant force will act the extremity of the middle third near the toe. (2) Compute the maximum compressive stresses acting
against the base of the dam. (3) Compute the minimum compressive stresses acting against the base of the dam. Please attach your
answers and solution in the space provided or at the end of this assessment.
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