When the reservoir is full, the maximum compressive force in a gravity dam is produced

This question was previously asked in
UKPSC JE Civil 2013 Official Paper II
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  1. at the toe
  2. at the heel
  3. within the middle third of the base
  4. at the centre of the base

Answer (Detailed Solution Below)

Option 1 : at the toe
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Detailed Solution

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Concept:

The maximum compressive stresses occur at the heel (mostly during reservoir empty condition) or at the toe (at reservoir full condition) and on planes normal to the face of the dam.

∴ For reservoir empty condition maximum compressive force will be at the heel.

∴ For reservoir full condition maximum compressive force will be at the toe of the dam.

The figure below is the pressure distribution diagram for reservoir full condition:

F1 N.M M.P 22.07.19 D 3

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