Answer / ds raju

Question is not clear. Is it design calculation ? or RCC
volume of the footing.

Design calculation depends on the safe bearing cpacity of
the soils and load on the footing.

Concrete volume can be calculated based on the shape of of
the footing.

For Rectangular/ square type : LxBxH
For Trepezoidal type : h/3 (Area at bottom-A1 + Area at top-
A2 +SqRt of (A1xA2)

Answer / r.vandhana

the calculation varies for each type of footing

Answer / sachin kesarkar

FOR RECTANGULAR FOOTING VOLUME= L*B*H
WHERE L=LENGTH B=BREDTH H=HEIGHT
FOR TRAPEZOIDAL FOOTING VOLUME=h/3(A1+A2+ROOT A1.A2)
WHERE h=HEIGHT A1=TOP SURFACE AREA A2=BTM.SURFACE AREA.
THERE ARE ALSO THE FOOTINGS WHICH ARE NOT PERFECTLY
TRAPEZOIDAL, IN THAT CASE WE HAVE CALCULATE IT WITH
TRAPEZOIDAL HAVING 5% VARIANCE.

Answer / srinivasan

1) FOR RECTANGULAR OR SQURE PORTION L X B X H WHERE L=
LENGTH B= BREADTH, H= HEIGHT

2) TRAPEZOIDAL PORTION H/3 (A1+ A2)+SQRT (A1*A2)

Answer / imtiyaz

H/3 (A1+ A2)+SQRT (A1*A2)

Answer / guest

width of footing can be calculated as
w= 2*l + 30
depth of footing can be varied as soil change

Answer / guest

Dear friends generally we do this footing calculation like
this two method =
(A)1st method =i)1.500 m x 1.500 m x 0.500 m = 1.13 Cum.
ii)½ x ( 1.500 m + 0.250 m ) x 1.500 m x 0.200 m = 0.260
Cum. (B)2nd Method =i)(1.500 x 1.500 x 0.200)+ (0.250 x
0.250 x.0.250)= 0.460 Cum.
ii) ( 1.500 x 1.500)+ ( 0.250 x 0.250)/2 x 0.200 = 0.231
Cum.
( But I think it is not proper procedure so please you do
properly )

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