Concept explainers
Refer to the rectangular combined footing in Figure 10.1, with Q1 = 100 kip and Q2 = 150 kip. The distance between the two column loads L3 = 13.5 ft. The proximity of the property line at the left edge requires that L2 = 3.0 ft. The net allowable soil pressure is 2500 lb/ft2. Determine the breadth and length of a rectangular combined footing.
Find the length and breadth of the combined footing.
Answer to Problem 10.1P
The length of the combined footing is
The width of the combined footing is
Explanation of Solution
Given information:
The distance between two column loads
The column loads
The distance
The net allowable soil pressure
Calculation:
Find the location of the resultant of the column loads
Substitute 150 kip for
Find the length of the foundation
Substitute 3 ft for
Therefore, the length of the combined footing is
Find the length
Substitute 22.2 ft for
Find the area of the combined footing
Substitute 100 kip for
Find the width of the rectangular footing
Substitute
Therefore, the width of the combined footing is
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Chapter 10 Solutions
Principles of Foundation Engineering (MindTap Course List)
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