ISMB 350 Dimensions & Weight

ISMB 350 is an IS 808 Indian Standard beam with an actual depth of 350 mm and a 140 mm flange, weighing 52.4 kg per metre (35.21 lb/ft) — commonly used for floor beams and roof framing.

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ISMB 350 Dimensions

PropertyMetricImperial
Depth (d)350 mm13.78 in
Flange width (b)140 mm5.512 in
Cross-section area (A)computed from weight and steel density66.8 cm²10.35 in²
Mass52.4 kg/m35.21 lb/ft

Standard: IS 808. Values from the published section tables; dimensions not listed here are not shown rather than estimated.

What does ISMB 350 weigh and cost?

ISMB 350 has a mass of 52.4 kg per metre. At an example material price of 2.00 per kg (in your currency) that is about 104.80 per metre. Set your quantity, length, and price to total your own run:

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Total weight
314 kg
Material cost
628.80

Material only, example pricing (same currency as the price you enter). Actual steel pricing varies by region, grade, quantity, and market conditions — use your own supplier numbers for real bids.

Pricing more than one size? Build a full member list in the free calculator →

Tallying by hand?

Free steel takeoff template (Excel) with IS 808 sections built in

Free. Needs a free Steelflo account (also includes 3 free takeoffs, no card).

Stop counting ISMB 350s by hand.

Upload your drawing set and SteelFlo puts a box on each steel label it finds, including ISMB 350, ready to review and export as a bill of materials.

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