Water is held by gate depicted in Picture 1. Gate is attached by a hinge at the

Question

Water is held by gate depicted in Picture 1. Gate is attached by a hinge at the upper end and by a bolt at the lower end. Bolt is specifically designed to fail when the applied force on it exceeds 500 kN. Find maximum depth of water held by the dam, until failure occurs. The gate has a width of 10 meters.

Picture 1:

Now, both bolts are now taken out and gate is supported by triangular truss which is depicted Picture 2. Find minimum force at the support pin P to allow for a water depth of 25m. At this depth of 25m, find the forces in the 3 members of the triangular truss.

Picture 2:

Explanation / Answer

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