ISA 150×100×12 Weight, Dimensions and IS 808 Properties
ISA 150×100×12 weighs 22.4 kg per metre as per IS 808:1989.
- One 6-metre length weighs 134.4 kg · one 12-metre length weighs 268.8 kg
- Long leg 150 mm · short leg 100 mm · thickness 12 mm · area 28.56 cm²
- Maximum principal moment of inertia Iuu = 749.9 cm⁴
ISA 150×100×12 is a standard unequal-leg angle in IS 808:1989. At 22.4 kg/m with a 150 mm long leg and 100 mm short leg, it is used for very heavy structural connections where the 12 mm wall ensures adequate bolt-group strength, heavy crane-gantry beam splice angles, and primary truss chord connections in long-span roof structures.
ISA 150×100×12 Weight Calculator
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ISA 150×100×12 — Weight Calculator
IS 808:1989 Dimensions and Sectional Properties
| Property | Symbol | Unit | Value |
|---|---|---|---|
| Long leg | A | mm | 150 |
| Short leg | B | mm | 100 |
| Thickness | t | mm | 12 |
| Cross-sectional area | A | cm² | 28.56 |
| Mass per metre | — | kg/m | 22.4 |
| Centroid from back of long leg | Cxx | cm | 3.47 |
| Centroid from back of short leg | Cyy | cm | 2.07 |
| Moment of inertia (x–x) | Ixx | cm⁴ | 659.6 |
| Moment of inertia (y–y) | Iyy | cm⁴ | 186.2 |
| Moment of inertia (u–u, max principal) | Iuu | cm⁴ | 749.9 |
| Moment of inertia (v–v, min principal) | Ivv | cm⁴ | 95.9 |
| Elastic section modulus (x–x) | Zxx | cm³ | 64.93 |
| Elastic section modulus (y–y) | Zyy | cm³ | 26.19 |
| Radius of gyration (u–u) | ruu | cm | 5.12 |
| Radius of gyration (v–v) | rvv | cm | 1.83 |
| Tangent of principal axis angle | tan α | — | 0.413 |
Dimensions and properties as per IS 808:1989 (reaffirmed 2021). x–x axis is parallel to the long leg; y–y axis is parallel to the short leg; u–u is the maximum principal axis at angle α to x–x. Mass tolerance: ±3% per piece per IS 808.
Common Applications of ISA 150×100×12
ISA 150×100×12 is used for very heavy structural connections where the 12 mm wall ensures adequate bolt-group strength, heavy crane-gantry beam splice angles, and primary truss chord connections in long-span roof structures. General steel merchants and angle stockists carry this size in IS 2062 E250 grade in 6 m and 12 m lengths. JSPL, SAIL, and RINL (Vizag Steel) all roll this designation to IS 808:1989 as standard stock.
Worked Example
A fabricator in Bengaluru needs 4 primary truss chord splice angles on a 40 m span roof truss using ISA 150×100×12, each 3000 mm long. Total length = 4 × 3.0 = 12.0 m. Weight = 12.0 × 22.4 = 268.8 kg. At ₹63,000 per tonne (Bengaluru, May 2026), material cost is approximately ₹16,934 before cutting charges.
Related ISA Unequal Angle Sections
Compare with adjacent sizes: ISA 150×100×10 (18.8 kg/m) · ISA 150×115×10 (20.0 kg/m). For all ISA unequal angles see the Section Reference Library →
Frequently Asked Questions
What is the weight of ISA 150×100×12 per metre?
ISA 150×100×12 weighs 22.4 kg per metre as specified in IS 808:1989. For a standard 6-metre length, the total weight is 134.4 kg. For a 12-metre length, total weight is 268.8 kg.
ISA 150×100×12 ka weight per meter kitna hota hai?
IS 808:1989 standard ke according, ISA 150×100×12 ka weight 22.4 kg/m hota hai. 6 metre ki ek length ka total weight 134.4 kg hoga. Zyada accurate calculation ke liye upar diya gaya calculator use karein.
What are the dimensions of ISA 150×100×12?
ISA 150×100×12 per IS 808:1989 has a long leg of 150 mm, short leg of 100 mm, thickness of 12 mm, and cross-sectional area of 28.56 cm².
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