ISMB 150 Weight, Dimensions and IS 808 Properties
ISMB 150 weighs 14.9 kg per metre as per IS 808:1989.
- One 6-metre length weighs 89.4 kg · one 12-metre length weighs 178.8 kg
- Overall depth 150 mm · flange width 80 mm · web thickness 4.8 mm
- Cross-sectional area 1,900 mm² · Ixx = 834.2 cm⁴
ISMB 150 is a popular light beam size per IS 808:1989, widely used for lintels, roof purlins, secondary floor beams, and support frames. Its 150 mm depth provides a significant stiffness advantage over ISMB 125 while remaining easy to handle on site.
ISMB 150 Weight Calculator
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ISMB 150 — Weight Calculator
IS 808:1989 Dimensions and Sectional Properties
| Property | Symbol | Unit | Value |
|---|---|---|---|
| Overall depth | D | mm | 150 |
| Flange width | B | mm | 80 |
| Web thickness | tw | mm | 4.8 |
| Flange thickness | tf | mm | 7.6 |
| Cross-sectional area | A | mm² | 1,900 |
| Mass per metre | — | kg/m | 14.9 |
| Moment of inertia (x–x) | Ixx | cm⁴ | 834.2 |
| Moment of inertia (y–y) | Iyy | cm⁴ | 52.6 |
| Elastic section modulus (x–x) | Zxx | cm³ | 111.2 |
| Elastic section modulus (y–y) | Zyy | cm³ | 13.2 |
| Radius of gyration (x–x) | rxx | cm | 6.63 |
| Radius of gyration (y–y) | ryy | cm | 1.66 |
Dimensions and properties as per IS 808:1989 (reaffirmed 2021). Mass tolerance: ±2.5% per piece per IS 808.
Common Applications of ISMB 150
ISMB 150 is one of the most commonly stocked light beam sizes in Indian steel yards. It is used for lintels up to 2.5 m spans, roof purlins in industrial sheds, secondary beams in mezzanine floors, and machine base frames. SAIL, Tata Steel, and JSW Steel all roll ISMB 150 to IS 808:1989 in IS 2062 E250 grade.
Worked Example
A fabricator in Ahmedabad needs 30 purlins of ISMB 150 each 5.0 m long for an industrial shed roof. Total length = 30 × 5.0 = 150 m. Weight = 150 × 14.9 = 2,235 kg (2.235 tonnes). At ₹58,000 per tonne (May 2026), estimated material cost is approximately ₹1,29,630.
Related ISMB Sections
Compare with adjacent sizes: ISMB 125 (13.1 kg/m) · ISMB 175 (19.6 kg/m). For all ISMB sizes see the Section Reference Library →
Frequently Asked Questions
What is the weight of ISMB 150 per metre?
ISMB 150 weighs 14.9 kg per metre as specified in IS 808:1989. For a standard 6-metre length, the total weight is 89.4 kg. For a 12-metre length, total weight is 178.8 kg.
ISMB 150 ka weight per meter kitna hota hai?
IS 808:1989 standard ke according, ISMB 150 ka weight 14.9 kg/m hota hai. 6 metre ki ek length ka total weight 89.4 kg hoga. Zyada accurate calculation ke liye upar diya gaya calculator use karein.
What are the dimensions of ISMB 150?
ISMB 150 per IS 808:1989 has an overall depth of 150 mm, flange width of 80 mm, web thickness of 4.8 mm, and flange thickness of 7.6 mm. The cross-sectional area is 1,900 mm².
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