ISA 175×175×12 Weight, Dimensions and IS 808 Properties
ISA 175×175×12 weighs 31.9 kg per metre as per IS 808:1989.
- One 6-metre length weighs 191.4 kg · one 12-metre length weighs 382.8 kg
- Leg 175 mm × thickness 12 mm · root radius 16.0 mm
- Cross-sectional area 40.57 cm² · Iuu = 1055.0 cm⁴
ISA 175×175×12 is a very large structural equal-leg angle in IS 808:1989. At 31.9 kg/m with a 175 mm leg it is used for the heaviest primary truss chord members, built-up compound columns in large multi-storey industrial frames, and primary bracing in large infrastructure structures.
ISA 175×175×12 Weight Calculator
Enter the total length in metres to calculate weight.
ISA 175×175×12 — Weight Calculator
IS 808:1989 Dimensions and Sectional Properties
| Property | Symbol | Unit | Value |
|---|---|---|---|
| Leg length | A | mm | 175 |
| Thickness | t | mm | 12 |
| Root radius | r1 | mm | 16.0 |
| Cross-sectional area | A | cm² | 40.57 |
| Mass per metre | — | kg/m | 31.9 |
| Centroid distance (Cxx = Cyy) | Cxx | cm | 4.07 |
| Moment of inertia (u–u, max) | Iuu | cm⁴ | 1055.0 |
| Moment of inertia (v–v, min) | Ivv | cm⁴ | 274.1 |
| Elastic section modulus (u–u) | Zuu | cm³ | 86.1 |
| Radius of gyration (u–u) | ruu | cm | 5.1 |
| Radius of gyration (v–v) | rvv | cm | 2.6 |
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 175×175×12
ISA 175×175×12 is used for primary chord members in 36–45 m span heavy industrial trusses, back-to-back compound column sections in large multi-storey steel frames, primary heavy wind bracing, large bolted connection nodes at main structural joints, and crane gantry chord members. Available from JSPL and Tata Steel.
Worked Example
A structural engineer in Mumbai specifies ISA 175×175×12 for 8 primary chord members, each 6 m long, for a 42 m span heavy industrial crane truss. Total length = 8 × 6 = 48 m. Weight = 48 × 31.9 = 1,531.2 kg (1.531 tonnes). At ₹62,000 per tonne (Mumbai, May 2026), material cost is approximately ₹94,934.
Related ISA Equal Angle Sections
Compare with adjacent sizes: ISA 150×150×15 (33.5 kg/m) · ISA 175×175×15 (39.4 kg/m). For all ISA equal angles see the Section Reference Library →
Frequently Asked Questions
What is the weight of ISA 175×175×12 per metre?
ISA 175×175×12 weighs 31.9 kg per metre as specified in IS 808:1989. For a standard 6-metre length, the total weight is 191.4 kg. For a 12-metre length, total weight is 382.8 kg.
ISA 175×175×12 ka weight per meter kitna hota hai?
IS 808:1989 standard ke according, ISA 175×175×12 ka weight 31.9 kg/m hota hai. 6 metre ki ek length ka total weight 191.4 kg hoga. Zyada accurate calculation ke liye upar diya gaya calculator use karein.
What are the dimensions of ISA 175×175×12?
ISA 175×175×12 per IS 808:1989 has a leg length of 175 mm, thickness of 12 mm, and root radius of 16.0 mm. The cross-sectional area is 40.57 cm².
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