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What is m & 20.&
what is fe&415.

Answer Posted / emdadul haque

(1) In the designation of concrete mix M refers mix
Proportion. like mix of M20 is(1:1.5:3)
The number(20) to the specified characteristic
compressive strength of 150mm cube at 28 days in N/mm^2.

(2) Fe is the chemical symbol for the element IRON, the
major component of steel.
415= characteristic strength of steel.

Is This Answer Correct ?    8 Yes 0 No



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