PSAD SITUATION 99: Wall Footing w/ Axial Load, Righting and Overturning Moment | CELE November 2018

Описание: CELE Past Board Exam Problem

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SITUATION: A 300 mm thick concrete wall is to be centrally located on a footing. The allowable soil bearing pressure is 192 kPa.
1. The footing is to be designed for a moment of 160 kN-m and a total vertical load of 320 kN. What should be the minimum footing width, in meters, to prevent uplift?
A. 1.8 B. 2.5 C. 3.0 D. 3.7




2. Given:
Total vertical load, P = 540 kN
Resisting moment, M = 1080 kN-m
The footing width is 4 m. How much is the allowable overturning moment (kN-m) such that there will be no tensile stress in the footing?
A. 280 B. 300 C. 360 D. 380

3. Given:
Resisting moment = 945 kN-m
Overturning moment = 315 kN-m
Total vertical load = 450 kN
Footing width = 4.2 m
Which of the following gives the maximum soil pressure (kPa)?
A. 321 B. 214 C. 288 D. 333


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