ISA 65×65×8 Weight, Dimensions and IS 808 Properties
ISA 65×65×8 weighs 7.7 kg per metre as per IS 808:1989.
- One 6-metre length weighs 46.2 kg · one 12-metre length weighs 92.4 kg
- Leg 65 mm × thickness 8 mm · root radius 8.0 mm
- Cross-sectional area 9.76 cm² · Iuu = 34.5 cm⁴
ISA 65×65×8 is the heavier 65 mm equal-leg angle in IS 808:1989. At 7.7 kg/m it provides 30% more cross-sectional area than ISA 65×65×6, used for loaded truss chord members and back-to-back compound struts where the thinner variant is under-capacity.
ISA 65×65×8 Weight Calculator
Enter the total length in metres to calculate weight.
ISA 65×65×8 — Weight Calculator
IS 808:1989 Dimensions and Sectional Properties
| Property | Symbol | Unit | Value |
|---|---|---|---|
| Leg length | A | mm | 65 |
| Thickness | t | mm | 8 |
| Root radius | r1 | mm | 8.0 |
| Cross-sectional area | A | cm² | 9.76 |
| Mass per metre | — | kg/m | 7.7 |
| Centroid distance (Cxx = Cyy) | Cxx | cm | 1.66 |
| Moment of inertia (u–u, max) | Iuu | cm⁴ | 34.5 |
| Moment of inertia (v–v, min) | Ivv | cm⁴ | 8.95 |
| Elastic section modulus (u–u) | Zuu | cm³ | 7.69 |
| Radius of gyration (u–u) | ruu | cm | 1.88 |
| Radius of gyration (v–v) | rvv | cm | 0.96 |
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 65×65×8
ISA 65×65×8 is used for loaded truss chord members in 12–16 m span structures, heavily loaded back-to-back compound struts, bolted splice connections, wind bracing members in tall industrial sheds, and gusset plates with high bearing loads. Available from JSPL and Tata Steel.
Worked Example
A fabricator in Pune needs 10 bottom chord members of ISA 65×65×8, each 6 m long, for a heavily loaded 14 m span truss. Total length = 10 × 6 = 60 m. Weight = 60 × 7.7 = 462 kg. At ₹62,000 per tonne (Pune, May 2026), material cost is approximately ₹28,644.
Related ISA Equal Angle Sections
Compare with adjacent sizes: ISA 65×65×6 (5.9 kg/m) · ISA 70×70×6 (6.4 kg/m). For all ISA equal angles see the Section Reference Library →
Frequently Asked Questions
What is the weight of ISA 65×65×8 per metre?
ISA 65×65×8 weighs 7.7 kg per metre as specified in IS 808:1989. For a standard 6-metre length, the total weight is 46.2 kg. For a 12-metre length, total weight is 92.4 kg.
ISA 65×65×8 ka weight per meter kitna hota hai?
IS 808:1989 standard ke according, ISA 65×65×8 ka weight 7.7 kg/m hota hai. 6 metre ki ek length ka total weight 46.2 kg hoga. Zyada accurate calculation ke liye upar diya gaya calculator use karein.
What are the dimensions of ISA 65×65×8?
ISA 65×65×8 per IS 808:1989 has a leg length of 65 mm, thickness of 8 mm, and root radius of 8.0 mm. The cross-sectional area is 9.76 cm².
Need weight for a different section type? Our free Metal Weight Calculator covers all IS 808 sections, pipes, bars, and hollow sections.
Try the Free Metal Weight Calculator →