A 2.2 m wide x 0.47 m thick RC footing is to be provided for a250mm thick RC wall. The wall carries a dead load of 245 kN/mand a live load of 261 kN/m of the wall. The gross allowable soilpressure is 302 kPa. The bottom of the footing is 835 mmbelow the ground. Use f'. = 21 MPa and fy = 420 MPa. Unitweight is 23.6 kN/m3 for concrete and 18.4 kN/m3 for the soilbackfill.Calculate the ratio of the actual soil pressure to net effectivepressure. (q/qeff ).Answer in four decimal places. (i.e. 1.6125, 1.5140, 0.8461,etc.)You Answered1.2356Correct Answer0.8093 margin of error +/- 1%

Answer Let us first draw the diagram of RC wall footing based on the given data Calculation of…

A 2.2 m wide x 0.47 m thick RC footing is to be provided for a 250mm thick RC wall. The wall carries a dead load of 245 kN/m and a live load of 261 kN/m of the wall. The gross allowable soil pressure is 302 kPa. The bottom of the footing is 835 mm below the ground. Use f'c = 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.)

A 2.2 m wide x 0.47 m thick RC footing is to be provided for a 250mm thick RC wall. The wall carries a dead load of 245 kN/m and a live load of 261 kN/m of the wall. The gross allowable soil pressure is 302 kPa. The bottom of the footing is 835 mm below the ground. Use f'c = 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.)

Principles of Foundation Engineering (MindTap Course List)

9th Edition

ISBN:9781337705028

Author:Braja M. Das, Nagaratnam Sivakugan

Publisher:Braja M. Das, Nagaratnam Sivakugan

Chapter7: Ultimate Bearing Capacity Of Shallow Foundations: Special Cases

Section: Chapter Questions

Problem 7.6P

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