A 600 mm x 600 mm column carries a total live load of 1200
kN and a total dead load of 1500 kN. The column is to be supported by a
rectangular spread footing whose width is limited to 3m and whose bottom
is 2m below the ground surface. Allowable soil bearing capacity at the
base of the footing is 230 kPa. Unit weight of soil above ftg is 16 kN/m3
and unit weight of concrete is 23.5 kN/m3. Assume f'c = 28 MPa, fy = 275
MPa and hc = 700 mm.
22. Which nearly gives the effective soil pressure in kPa?
a. 192.75 c. 193.75
b. 263.83 d. 199.43
23. Which nearly gives the other length (dim) of the footing in m?
a. 4.5 c. 3.7
b. 3.5 d. 4.7
24. Which nearly gives the effective depth using one way shear in
mm?
a. 552.56 c. 552.52
b. 584.54 d. 584.55
25. Which nearly gives the effective depth using two-way shear in
mm?
a. 552.56 c. 552.52
b. 584.54 d. 584.55
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