Calculate Sand Gravel per 50kg Cement Bag in Volume ...
Lets calculate volume of sand and gravel needed to prepare M15 grade concrete. Mix Ratio of M15 grade concrete is 1:2:4. Hence for every 1 part of cement, we have to use 2 part of sand and 4 part of gravel to get M15 ratio concrete. The volume of 50 kg cement bag is CFT.