Answer / venkatreddy

415 stands for the tensile strength of the steel bar=415N/mm^2

Answer / ratheesh

FE - ferrous iron
415 - tensile strength 415N/mm2

Answer / surajpotdar

Fe415 is yield strengh of steel
415 N/mm2

Answer / jayaprakash g

415 stands for yield strength of steel

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how to calculate cement bag in RCC

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