For level bases and bedding for footings, the usual grade of concrete used is M10 or M15
M20 is standard for use with reinforced cement concrete when being used in beams, slabs, supporting columns in buildings in commercial concrete pours.
For level bases and bedding for footings, the usual grade of concrete used is M10 or M15
M20 is standard for use with reinforced cement concrete when being used in beams, slabs, supporting columns in buildings in commercial concrete pours.