1.

A symmetrical parabolic arch of span 19 m and rise 4 m is hinged at the springings. It supports a uniformly distributed load of 1.5 tonnes per meter run of the span. The horizontal thrust in tonnes at each of the springing is -

A. 20.63
B. 16.92
C. 8.5
D. Zero
Answer» C. 8.5


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