QUESTION
Objective Question
How many cement bags are required for plain cement concrete flooring of size 3 m x 3 m and 100 mm thickness, using a
1:3:6 mix?
Answer
( Option A)
4 bags
Solution
Wet volume =3 x 3 × 0.1 = 0.9 m³.
Dry volume 0.9 × 1.54 = 1.386 m³.
Cement fraction 1/10, so cement volume 0.1386 m³.
Using 0.035 m³ per bag: 0.1386/0.035 3.96, or about 4 bags.
