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Answer Posted / kapil gupta
minimum percentage of steel used is 1.5% for 1 cum .
for ex-if we have to build a rcc slab having voloume 10 cum and to find steel used in this rcc in kg/m is -
density of steel =7850kg/cum
and 1.5% of steel is used so simply it is the product of 7850x0.015=117.75kg for 1 cum
now for 10 cum 117.5x10=1175kg.
so for 10 cum rcc 1175 kg steel is used.
*steel more than 2% is not right way as it is very different estimate for practical calculation.
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