Computer · Structural Analysis
A rigid frame ABCD with vertical members AB and CD is pinned at A and roller-supported at D. The horizontal member BC is loaded with a vertical point load of 90 kN at its center. Given AB = BC = CD = 3 m. If support A undergoes a rotation of 1/300 rad and also sinks downward by 30 mm, how are the final support reactions affected?
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 1The bending moments change but the support reactions remain partially altered.
- 2The reaction at A shall change but the reaction at D shall remain unchanged.
- 3They shall not be affected due to rotation and sinking because the frame is statically determinate.✓
- 4They shall be significantly altered due to both rotation and sinking.
Correct answer
They shall not be affected due to rotation and sinking because the frame is statically determinate.
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