ISMB 100 Dimensions & Weight

ISMB 100 is an IS 808 Indian Standard beam with an actual depth of 100 mm and a 75 mm flange, weighing 11.5 kg per metre (7.73 lb/ft) — commonly used for lintels, trimmers, and light framing. It is the lightest of the 14 ISMB sizes listed here.

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

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

or start a free takeoff to count ISMB 100 on your drawing.

ISMB 100 Dimensions

PropertyMetricImperial
Depth (d)100 mm3.937 in
Flange width (b)75 mm2.953 in
Cross-section area (A)computed from weight and steel density14.6 cm²2.26 in²
Mass11.5 kg/m7.73 lb/ft

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

What does ISMB 100 weigh and cost?

ISMB 100 has a mass of 11.5 kg per metre. At an example material price of 2.00 per kg (in your currency) that is about 23.00 per metre. Set your quantity, length, and price to total your own run:

Count them on my drawing →

Total weight
69 kg
Material cost
138.00

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 100s by hand.

Upload your drawing set and SteelFlo puts a box on each steel label it finds, including ISMB 100, ready to review and export as a bill of materials.

3 free takeoffsNo credit card requiredAISC + 5 international standards

Found your size? Now count it on the drawing.

Upload your PDF and SteelFlo boxes the steel labels it finds, so you get a member list instead of a manual tally of ISMB 100 and its neighbors.

3 free takeoffsNo credit card required