I Beam Weight Calculator – ISMB ISWB Weight per Metre
Calculate steel I-beam weight per metre and for any total length. Covers ISMB and ISWB sections as per IS 808. Used by structural engineers, fabricators, and steel contractors in India.
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ISMB Weight Table (IS 808)
ISMB 150
14.9 kg/m
ISMB 200
22.1 kg/m
ISMB 250
30.4 kg/m
ISMB 300
35.0 kg/m
ISMB 400
52.4 kg/m
ISMB 500
75.0 kg/m
Custom I Section Weight: Area = B×tf×2 + (D−2×tf)×tw Weight (kg/m) = Area (mm²) × 7850 / 1,000,000
Frequently Asked Questions
ISMB stands for Indian Standard Medium Weight Beam. It is an I-shaped steel section manufactured as per IS 808. Widely used as beams, columns, and purlins in industrial and structural steel construction in India.
ISMB 200 (200mm depth) weighs 22.1 kg per metre as per IS 808. For a standard 6m length: 22.1 × 6 = 132.6 kg per piece.
ISMB (Medium Weight Beam) has narrower flanges and is more commonly available. ISWB (Wide Flange Beam) has wider flanges providing better lateral stability and is preferred for heavily loaded beams and columns.