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UPSC Civil Service Exam Questions - Engineering

Q1:

A three-hinged semicircular arch of radius R carries a uniformly distributed load W per unit run over the whole span. The horizontal thrust is

A WR

B WR/2

C 4/3π WR

D

ANS:B - WR/2

Semicircular with uld over entire span - wR/2.

Semicircular with conc load at the crown - W/2.