A three-hinged circular arch ACB is formed by two quadrants of circles AC and BC of radii 2R and R respectively with C as crown, as shown in the figure at side. Consider the following in respect of the reactive forces developed at support A and B due to concentrated load W at the Crown. 1. Line of action RA at A is inclined as 45° to the horizontal. 2. VA = VB = W/2 3. HB = 2 HA 4. HA = HB = W/2 Which of the above is/are correct ?
A. 1 and 3 B. 2 and 3 C. 1, 2 and 4 D. 4 only
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Answer: A.) 1 and 3.(for the conditions )
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