![]() ![]() If we refer to M15 concrete, it signifies that the concrete contains 15 N/mm 2 characteristic compressive strength at 28 days.įor M5 grade of concrete, mix proportion is 1:4:8įor M10 grade of concrete, mix proportion is 1:3:6įor M15 grade of concrete, mix proportion is 1:2:4įor M20 grade of concrete, mix proportion is 1:1.5:3įor M25 grade of concrete, mix proportion is 1:1:2 “Mix” belongs to the relevant ingredient proportions which are Cement: Sand: Aggregate or Cement: Fine Aggregate: Coarse Aggregate. The “M” stands for Mix design of concrete succeeded by the compressive strength number in N/mm2 Given below, the details of standard conversion factors:-Ĭoncrete grades are represented as M10, M20, M30 as per their compressive strength. ![]() As for instance, to transform inches to feet, the exact conversion value should be 12 inches equivalent to 1 foot. While doing a conversion, the exact conversion factor to an identical value should be applied. Here, D denotes dia of bars and L denotes total length of steel bars for which the weight should be measured.Īs for instance, if it is required to work out the weight of 20 mm steel bars, the calculation will be as follow :-Ī conversion factor stands for a number that is employed to transform one set of units to another, by multiplying or dividing. The following formula is applied to find out the weight of steel bars:.
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