ISA 45×45×5 Weight, Dimensions and IS 808 Properties
ISA 45×45×5 weighs 3.4 kg per metre as per IS 808:1989.
- One 6-metre length weighs 20.4 kg · one 12-metre length weighs 40.8 kg
- Leg 45 mm × thickness 5 mm · root radius 6.0 mm
- Cross-sectional area 4.3 cm² · Iuu = 7.4 cm⁴
ISA 45×45×5 is a light structural equal-leg angle in IS 808:1989. At 3.4 kg/m with a 45 mm leg it is used for secondary bracing, back-to-back cleats, and light truss web members in small-span roof structures.
ISA 45×45×5 Weight Calculator
Enter the total length in metres to calculate weight.
ISA 45×45×5 — Weight Calculator
IS 808:1989 Dimensions and Sectional Properties
| Property | Symbol | Unit | Value |
|---|---|---|---|
| Leg length | A | mm | 45 |
| Thickness | t | mm | 5 |
| Root radius | r1 | mm | 6.0 |
| Cross-sectional area | A | cm² | 4.3 |
| Mass per metre | — | kg/m | 3.4 |
| Centroid distance (Cxx = Cyy) | Cxx | cm | 1.15 |
| Moment of inertia (u–u, max) | Iuu | cm⁴ | 7.4 |
| Moment of inertia (v–v, min) | Ivv | cm⁴ | 1.93 |
| Elastic section modulus (u–u) | Zuu | cm³ | 2.33 |
| Radius of gyration (u–u) | ruu | cm | 1.31 |
| Radius of gyration (v–v) | rvv | cm | 0.67 |
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 45×45×5
ISA 45×45×5 is used for light truss web members, secondary diagonal bracing, back-to-back cleat connections, purlin support brackets, and equipment platform members. Available from JSPL, Tata Steel, and RINL/Vizag Steel in IS 2062 E250 grade.
Worked Example
A fabricator in Mumbai needs 24 diagonal bracing members of ISA 45×45×5, each 1.5 m long, for a mezzanine floor structure. Total length = 24 × 1.5 = 36 m. Weight = 36 × 3.4 = 122.4 kg. At ₹63,000 per tonne (Mumbai, May 2026), material cost is approximately ₹7,711.
Related ISA Equal Angle Sections
Compare with adjacent sizes: ISA 40×40×5 (3.0 kg/m) · ISA 50×50×5 (3.8 kg/m). For all ISA equal angles see the Section Reference Library →
Frequently Asked Questions
What is the weight of ISA 45×45×5 per metre?
ISA 45×45×5 weighs 3.4 kg per metre as specified in IS 808:1989. For a standard 6-metre length, the total weight is 20.4 kg. For a 12-metre length, total weight is 40.8 kg.
ISA 45×45×5 ka weight per meter kitna hota hai?
IS 808:1989 standard ke according, ISA 45×45×5 ka weight 3.4 kg/m hota hai. 6 metre ki ek length ka total weight 20.4 kg hoga. Zyada accurate calculation ke liye upar diya gaya calculator use karein.
What are the dimensions of ISA 45×45×5?
ISA 45×45×5 per IS 808:1989 has a leg length of 45 mm, thickness of 5 mm, and root radius of 6.0 mm. The cross-sectional area is 4.30 cm².
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