To calculate the soil pressure under the footing, we need to determine the total load applied by the footing and then divide it by the area of the footing.Given:
qu = 4 ksf (kips per square foot) - This represents the ultimate bearing capacity of the soil.
D = 65 kips - This is the dead load applied by the structure.
L = 100 kips - This is the live load applied by the structure.
M = 20 ft-kips - This is the moment applied by the structure.
Width (b) = 5m - This is the width of the footing.
Length (l) = 5m - This is the length of the footing.