ISA 75×75×8 Weight, Dimensions and IS 808 Properties
ISA 75×75×8 weighs 8.9 kg per metre as per IS 808:1989.
- One 6-metre length weighs 53.4 kg · one 12-metre length weighs 106.8 kg
- Leg 75 mm × thickness 8 mm · root radius 9.0 mm
- Cross-sectional area 11.38 cm² · Iuu = 54.0 cm⁴
ISA 75×75×8 is the medium-thickness variant of the 75 mm equal-leg angle in IS 808:1989. At 8.9 kg/m it is used for loaded truss chord members, heavily loaded back-to-back compound struts, and primary bracing members in medium industrial structures.
ISA 75×75×8 Weight Calculator
Enter the total length in metres to calculate weight.
ISA 75×75×8 — Weight Calculator
IS 808:1989 Dimensions and Sectional Properties
| Property | Symbol | Unit | Value |
|---|---|---|---|
| Leg length | A | mm | 75 |
| Thickness | t | mm | 8 |
| Root radius | r1 | mm | 9.0 |
| Cross-sectional area | A | cm² | 11.38 |
| Mass per metre | — | kg/m | 8.9 |
| Centroid distance (Cxx = Cyy) | Cxx | cm | 1.87 |
| Moment of inertia (u–u, max) | Iuu | cm⁴ | 54.0 |
| Moment of inertia (v–v, min) | Ivv | cm⁴ | 14.0 |
| Elastic section modulus (u–u) | Zuu | cm³ | 10.36 |
| Radius of gyration (u–u) | ruu | cm | 2.18 |
| Radius of gyration (v–v) | rvv | cm | 1.11 |
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 75×75×8
ISA 75×75×8 is used for loaded truss top and bottom chord members in 12–18 m span structures, back-to-back compound columns under significant axial load, wind bracing members in tall sheds, and bolted connection cleats requiring high bearing capacity. Available from JSPL, Tata Steel, and RINL.
Worked Example
A structural engineer in Ahmedabad specifies ISA 75×75×8 for 16 truss bottom chord members, each 6 m long, for a 15 m span industrial building. Total length = 16 × 6 = 96 m. Weight = 96 × 8.9 = 854.4 kg (0.854 tonnes). At ₹62,000 per tonne (Ahmedabad, May 2026), material cost is approximately ₹52,973.
Related ISA Equal Angle Sections
Compare with adjacent sizes: ISA 75×75×6 (6.9 kg/m) · ISA 75×75×10 (10.9 kg/m). For all ISA equal angles see the Section Reference Library →
Frequently Asked Questions
What is the weight of ISA 75×75×8 per metre?
ISA 75×75×8 weighs 8.9 kg per metre as specified in IS 808:1989. For a standard 6-metre length, the total weight is 53.4 kg. For a 12-metre length, total weight is 106.8 kg.
ISA 75×75×8 ka weight per meter kitna hota hai?
IS 808:1989 standard ke according, ISA 75×75×8 ka weight 8.9 kg/m hota hai. 6 metre ki ek length ka total weight 53.4 kg hoga. Zyada accurate calculation ke liye upar diya gaya calculator use karein.
What are the dimensions of ISA 75×75×8?
ISA 75×75×8 per IS 808:1989 has a leg length of 75 mm, thickness of 8 mm, and root radius of 9.0 mm. The cross-sectional area is 11.38 cm².
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