A two hinged semicircular arch of radius $25 m$ carries a load system as shown in figure. The horizontal thrust at each support is ______ kN

34.4

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Solution

The correct option is A 34.4

$H = \frac{60}{π} s i n^{2} (180 - 90 - 72) + \frac{30}{π} + \frac{80}{π} s i n^{2} (72^{o})$
$= 34.406 k N$

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