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Which among the following is not an assumption of the ‘Trial Load Analysis’ method of design of arch dams?

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in Irrigation Engineering by (75.2k points)
Which among the following is not an assumption of the ‘Trial Load Analysis’ method of design of arch dams?

(a) Plane sections normal to the axis remain plane after flexure

(b) Any horizontal arch ring is independent of the arch rings below and above

(c) Modulus of elasticity of concrete and rock foundation is equal for compression and tension

(d) Stresses are proportional to strains

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This question is from Arch Dams in portion Arch and Buttress Dams of Irrigation Engineering

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by (106k points)
The correct answer is (b) Any horizontal arch ring is independent of the arch rings below and above

Best explanation: In Trial load method, the dam is divided into two systems of elements i.e. the horizontal arches and the vertical cantilevers. Each element is supposed to take a percentage of the load due to silt and water pressure. The actual distribution of the load between these elements is then arrived at by several trials.

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