Example 6: Calculate the quantities of cement, water, and fine aggregate and coarse aggregate per trial mix of 0.08 m3 for the following specifications. Characteristic compressive strength 50 MPa at 28 days; S=5 MPa Cement Type I; %3D Slump required = 30-60 mm; Max. Aggregate size = 10 mm3; %3D Coarse aggregate CRUSHED (100 mm), MA fine aggregate CRUSHED (85% pass 600 microns) Maximum allowable free- water/cement ratio = 0.50; Maximum allowable %3D cement content = 550 kg/m3 solve by Britsh method may needed some charts