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The most economical central angle of the arch rings of an arch dam can be adopted only at one place preferably at mid-height in an arch dam is of the type __________________

The most economical central angle of the arch rings of an arch dam can be adopted only at one place preferably at mid-height in an arch dam is of the type __________________ Correct Answer constant radius arch dam

The most economical central angle is equal to 1330-34’ and such an angle can be adopted only at one place in constant radius arch dam since as there is considerable variation with height due to narrow V-shape of the valley. It is therefore considered to keep the economical angle of 1330-34’ at about mid-height and the angle at the top will be more than this value due to topographical conditions.

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