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1. In the three-hinge arch shown, the diameter of the arch is 3 m
with center directly below C and 3 m to right of A. Point B is 0.8 m above A, and
point D is 0.4 m horizontally from A. P1 = 3 kN, 1.0 m to right of A, and P2 =
5.2 kN, 0.6 m above B.
1. Calculate the reaction at A, in kN.
2. Calculate the reaction at B, in kN.
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