ISA 100×100×12 Weight, Dimensions and IS 808 Properties
ISA 100×100×12 weighs 17.6 kg per metre as per IS 808:1989.
- One 6-metre length weighs 105.6 kg · one 12-metre length weighs 211.2 kg
- Leg 100 mm × thickness 12 mm · root radius 11.0 mm
- Cross-sectional area 22.43 cm² · Iuu = 188.0 cm⁴
ISA 100×100×12 is the heaviest standard 100 mm equal-leg angle in IS 808:1989. At 17.6 kg/m it is used for the most heavily loaded primary truss chord members and built-up compound column sections in large industrial and infrastructure structures.
ISA 100×100×12 Weight Calculator
Enter the total length in metres to calculate weight.
ISA 100×100×12 — Weight Calculator
IS 808:1989 Dimensions and Sectional Properties
| Property | Symbol | Unit | Value |
|---|---|---|---|
| Leg length | A | mm | 100 |
| Thickness | t | mm | 12 |
| Root radius | r1 | mm | 11.0 |
| Cross-sectional area | A | cm² | 22.43 |
| Mass per metre | — | kg/m | 17.6 |
| Centroid distance (Cxx = Cyy) | Cxx | cm | 2.57 |
| Moment of inertia (u–u, max) | Iuu | cm⁴ | 188.0 |
| Moment of inertia (v–v, min) | Ivv | cm⁴ | 48.74 |
| Elastic section modulus (u–u) | Zuu | cm³ | 27.48 |
| Radius of gyration (u–u) | ruu | cm | 2.9 |
| Radius of gyration (v–v) | rvv | cm | 1.47 |
Dimensions and properties as per IS 808:1989 (Reaffirmed 2001). Mass tolerance: ±3% per piece as per IS 808. u–u is the major principal axis at 45° to both legs; v–v is the minor principal axis. Zvv is not published in IS 808:1989 for angle sections.
Common Applications of ISA 100×100×12
ISA 100×100×12 is used for the most heavily loaded back-to-back compound chord members in large-span trusses, primary built-up column sections under very high axial load, heavy wind bracing members in tall structures, and bolted connection joints requiring maximum bearing area. Available from JSPL, Tata Steel, and SAIL.
Worked Example
A structural engineer in Chennai specifies ISA 100×100×12 for 8 heavily loaded primary chord members, each 6 m long, for a 28 m span industrial building truss. Total length = 8 × 6 = 48 m. Weight = 48 × 17.6 = 844.8 kg (0.845 tonnes). At ₹62,000 per tonne (Chennai, May 2026), material cost is approximately ₹52,378.
Related ISA Equal Angle Sections
Compare with adjacent sizes: ISA 100×100×10 (14.9 kg/m) · ISA 110×110×10 (16.5 kg/m). For all ISA equal angles see the Section Reference Library →
Frequently Asked Questions
What is the weight of ISA 100×100×12 per metre?
ISA 100×100×12 weighs 17.6 kg per metre as specified in IS 808:1989. For a standard 6-metre length, the total weight is 105.6 kg. For a 12-metre length, total weight is 211.2 kg.
ISA 100×100×12 ka weight per meter kitna hota hai?
IS 808:1989 standard ke according, ISA 100×100×12 ka weight 17.6 kg/m hota hai. 6 metre ki ek length ka total weight 105.6 kg hoga. Zyada accurate calculation ke liye upar diya gaya calculator use karein.
What are the dimensions of ISA 100×100×12?
ISA 100×100×12 per IS 808:1989 has a leg length of 100 mm, thickness of 12 mm, and root radius of 11.0 mm. The cross-sectional area is 22.43 cm².
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