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Calculate the ratio of the actual soil pressure to net effective pressure. (q/qeff ).

Calculate the ratio of the actual soil pressure to net effective pressure. (q/qeff ).

Structural Analysis
Structural Analysis
6th Edition
ISBN:9781337630931
Author:KASSIMALI, Aslam.
Publisher:KASSIMALI, Aslam.
Chapter2: Loads On Structures
Section: Chapter Questions
Problem 1P
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Question
A 2.8 m wide x 0.42 m thick RC footing is to be provided for a 250mm thick RC wall. The wall carries a dead load of 161 kN/m and a live load of 224 kN/m of the wall. The gross allowable soil pressure is 260 kPa. The bottom of the footing is 1,031 mm below the ground. Use f'. = 21 MPa and fy = 420 MPa. Unit weight is 23.6 kN/m3 for concrete and 18.4 kN/m3 for the soil backfill. Calculate the ratio of the actual soil pressure to net effective pressure. (q/qeff ). Answer in four decimal places. (i.e. 1.6125, 1.5140, 0.8461, etc.)
Transcribed Image Text:A 2.8 m wide x 0.42 m thick RC footing is to be provided for a 250mm thick RC wall. The wall carries a dead load of 161 kN/m and a live load of 224 kN/m of the wall. The gross allowable soil pressure is 260 kPa. The bottom of the footing is 1,031 mm below the ground. Use f'. = 21 MPa and fy = 420 MPa. Unit weight is 23.6 kN/m3 for concrete and 18.4 kN/m3 for the soil backfill. Calculate the ratio of the actual soil pressure to net effective pressure. (q/qeff ). Answer in four decimal places. (i.e. 1.6125, 1.5140, 0.8461, etc.)
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