TO FIND THE MATERIAL QUANTITY OF CONCRETE
to find the material for the required 1 m3 concrete work
grad of concrete :- M20
material proportions cement : sand : aggregate
1 : 1.5 : 3
sum of ratio : 1 + 1.5 + 3 = 5.5
volume of concrete : 1 M3
safety factors : 57 %
dry volume of concrete : 1+ ((57/100) x 1)
= 1.57 M3
material calculation :-
CEMENT :
total wet volume
= ------------------------------------------ x cement ration
sum of ration
1.57
= -------------------------------------------- x 1
1 + 1.5 + 3
= 0.28 M3
to find number of bag =
1 bag of cement = 0.035 lit
0.28
= ----------------------
0.035
= 8.15 say 9 bags
total number of cement bags 9 bags
SAND :
total wet volume
= ------------------------------------------ x sand
sum of ration
1.57
= -------------------------------------------- x 1.5
1 + 1.5 + 3
= 0.42 M3
AGGREGATE :
total wet volume
= ------------------------------------------ x aggregate
sum of ration
1.57
= -------------------------------------------- x 3
1 + 1.5 + 3
= 0.84 M3
