Every Engg. know that =dia*dia/162.2 is Steel weight Formula, But very less people Know that orgin of 162.2 asumption.
Answer Posted / bilal ali khan
Kamaal karte Hoon Main Batata Ho Aur Exact Nikal Ke Dikhata Hoon
Weight=area x thickness x density=LENGTH X AREA X DENSITY
densiy of steel=7850kG per m^3
area=(22 x d^2)/(7 X 4)=(PIE X D KA SQUARE)/ 4
LIS LENGTH
NOW WEIGT=(7850 X L X 3.14 X D^2) / 4
WEIGHT=(L X D^2 ) / (4/(3.14 X 7850))
WEIGHT= (L X D^2) / 0.0001618
NOW U KNOW IN CONVERT L INTO M AND D IN MM U WILL GET UR RESULT dia*dia/162.2
So i know its origin exactly
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