ISA 70×70×6 Weight, Dimensions and IS 808 Properties
ISA 70×70×6 weighs 6.4 kg per metre as per IS 808:1989.
- One 6-metre length weighs 38.4 kg · one 12-metre length weighs 76.8 kg
- Leg 70 mm × thickness 6 mm · root radius 9.0 mm
- Cross-sectional area 8.13 cm² · Iuu = 34.1 cm⁴
ISA 70×70×6 is a structural equal-leg angle in IS 808:1989. At 6.4 kg/m with a 70 mm leg it bridges the gap between 65 mm and 75 mm angles, used for medium-span truss chord members, back-to-back built-up column sections, and bracing in industrial structures.
ISA 70×70×6 Weight Calculator
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ISA 70×70×6 — Weight Calculator
IS 808:1989 Dimensions and Sectional Properties
| Property | Symbol | Unit | Value |
|---|---|---|---|
| Leg length | A | mm | 70 |
| Thickness | t | mm | 6 |
| Root radius | r1 | mm | 9.0 |
| Cross-sectional area | A | cm² | 8.13 |
| Mass per metre | — | kg/m | 6.4 |
| Centroid distance (Cxx = Cyy) | Cxx | cm | 1.67 |
| Moment of inertia (u–u, max) | Iuu | cm⁴ | 34.1 |
| Moment of inertia (v–v, min) | Ivv | cm⁴ | 8.88 |
| Elastic section modulus (u–u) | Zuu | cm³ | 6.92 |
| Radius of gyration (u–u) | ruu | cm | 2.05 |
| Radius of gyration (v–v) | rvv | cm | 1.05 |
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 70×70×6
ISA 70×70×6 is used for truss chord and web members in 10–14 m span structures, back-to-back compound column legs, bracing members in multi-bay sheds, and secondary beam support brackets. Stocked by JSPL, Tata Steel, and RINL in IS 2062 E250 grade.
Worked Example
A fabricator in Nagpur needs 12 bottom chord members of ISA 70×70×6, each 5 m long, for a 10 m span series of roof trusses. Total length = 12 × 5 = 60 m. Weight = 60 × 6.4 = 384 kg. At ₹62,000 per tonne (Nagpur, May 2026), material cost is approximately ₹23,808.
Related ISA Equal Angle Sections
Compare with adjacent sizes: ISA 65×65×8 (7.7 kg/m) · ISA 75×75×6 (6.9 kg/m). For all ISA equal angles see the Section Reference Library →
Frequently Asked Questions
What is the weight of ISA 70×70×6 per metre?
ISA 70×70×6 weighs 6.4 kg per metre as specified in IS 808:1989. For a standard 6-metre length, the total weight is 38.4 kg. For a 12-metre length, total weight is 76.8 kg.
ISA 70×70×6 ka weight per meter kitna hota hai?
IS 808:1989 standard ke according, ISA 70×70×6 ka weight 6.4 kg/m hota hai. 6 metre ki ek length ka total weight 38.4 kg hoga. Zyada accurate calculation ke liye upar diya gaya calculator use karein.
What are the dimensions of ISA 70×70×6?
ISA 70×70×6 per IS 808:1989 has a leg length of 70 mm, thickness of 6 mm, and root radius of 9.0 mm. The cross-sectional area is 8.13 cm².
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