How to Calculate Weight of Mild Steel Bar

This is another useful presentation from L & T - Learning Technology. In this construction video, he will teach you how to calculate weight of steel bar.

Weight = Volume x Density

Volume of bar = πr²h [diameter of cylinder = 8 millimeter and length of cylinder = 1 meter]

Volume of bar = 3.14 x (0.004)² x 1

Volume of bar = 0.00005024 m³

We know that density = 7850 kg/m³

Weight = 0.00005024 x 7850 = 0.395 kg

PROOF

Unit weight of steel (for 1 meter length) = d²/162 = (8)²/162 = 0.395 kg

Both the values are same, which means the formula is right.

For different lengths, weight of steel = d²/162 x length.

Watch the following online demonstration.