calculate proportions (cement , w/c , fine aggregate , coarse aggregate ) to make differet grades of concrete

i would like to calculate the proportions to make different grades of concrete for cubes and beams with concrete grade c30 6 cubes: 100mm x 100mm x 100mm 2 beams 500mm x 100mm x100 mm concrete grade c40 6 cubes: 100mm x 100mm x 100mm 2 beams 500mm x 100mm x100 mm concrete grade c60 6 cubes: 100mm x 100mm x 100mm 2 beams 500mm x 100mm x100 mm ## Deliverables [login to view URL] requirements notice: As originally posted, this bid request does not have complete details. Should a dispute arise and this project go into arbitration "as is", the contract's vagueness might cause it to be interpreted against you, even though you were acting in good-faith. So for your protection, if you are interested in this project, please work-out and document the requirements onsite.