Trapezoidal footing length = 2m , B=1.7m D=0.5m and d-
0.15m. Can anybody help and calculate quantity of concrete
by explaining all formulas involved.

Answer Posted / umesh gumme

avg of D & d=0.5+0.15/2=0.325
size of footing 1.7*2 no of footing assume 5
no*(avg+D)*(avg+D)*(D-d)
5*(0.325+0.5)*(0.325+0.5)*(0.5-0.15)
5*0.825*0.825*0.485=1.65 m cube

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