Answer:
The total force on the building, which is a measure of the resistance that must be included in the design of the building is 990 KN
Step-by-step explanation:
Total force = total pressure × Area of that face of the building
Taking an elemental part of the wall
Force on that part, dF = Pressure of that part × Area on that part = (160 + 2y)(75dy)
dF = 12000 dy + 150y dy
dF = (12000 + 150y) dy
Integrating both sides
∫dF = ∫(12000 + 150y) dy
Integrating the left hand side from 0 to F and the right hand side from 0 to 60 m
F = 12000y + 75y² = 12000(60) + 75(60²) = 990000 N = 990 KN.