ISA 40×40×5 Weight, Dimensions and IS 808 Properties
ISA 40×40×5 weighs 3.0 kg per metre as per IS 808:1989.
- One 6-metre length weighs 18.0 kg · one 12-metre length weighs 36.0 kg
- Leg 40 mm × thickness 5 mm · root radius 6.0 mm
- Cross-sectional area 3.79 cm² · Iuu = 5.1 cm⁴
ISA 40×40×5 is one of the most commonly stocked light structural angles in India. At 3.0 kg/m with a 40 mm leg it is a standard choice for roof purlin cleats, lacing bars, and secondary bracing in light industrial structures.
ISA 40×40×5 Weight Calculator
Enter the total length in metres to calculate weight.
ISA 40×40×5 — Weight Calculator
IS 808:1989 Dimensions and Sectional Properties
| Property | Symbol | Unit | Value |
|---|---|---|---|
| Leg length | A | mm | 40 |
| Thickness | t | mm | 5 |
| Root radius | r1 | mm | 6.0 |
| Cross-sectional area | A | cm² | 3.79 |
| Mass per metre | — | kg/m | 3.0 |
| Centroid distance (Cxx = Cyy) | Cxx | cm | 1.05 |
| Moment of inertia (u–u, max) | Iuu | cm⁴ | 5.1 |
| Moment of inertia (v–v, min) | Ivv | cm⁴ | 1.33 |
| Elastic section modulus (u–u) | Zuu | cm³ | 1.8 |
| Radius of gyration (u–u) | ruu | cm | 1.16 |
| Radius of gyration (v–v) | rvv | cm | 0.59 |
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 40×40×5
ISA 40×40×5 is used for roof purlin and girt cleats, lacing bars in battened columns, secondary diagonal bracing in portal frames, equipment support frames, and gusset stiffeners. Tata Steel, JSPL, and APL Apollo all stock ISA 40×40×5 in IS 2062 E250 grade.
Worked Example
A structural fabricator in Surat needs 60 purlin cleats of ISA 40×40×5, each 250 mm long, for a 20 m span industrial shed. Total length = 60 × 0.25 = 15 m. Weight = 15 × 3.0 = 45 kg. At ₹62,000 per tonne (Surat, May 2026), material cost is approximately ₹2,790.
Related ISA Equal Angle Sections
Compare with adjacent sizes: ISA 35×35×5 (2.6 kg/m) · ISA 45×45×5 (3.4 kg/m). For all ISA equal angles see the Section Reference Library →
Frequently Asked Questions
What is the weight of ISA 40×40×5 per metre?
ISA 40×40×5 weighs 3.0 kg per metre as specified in IS 808:1989. For a standard 6-metre length, the total weight is 18.0 kg. For a 12-metre length, total weight is 36.0 kg.
ISA 40×40×5 ka weight per meter kitna hota hai?
IS 808:1989 standard ke according, ISA 40×40×5 ka weight 3.0 kg/m hota hai. 6 metre ki ek length ka total weight 18 kg hoga. Zyada accurate calculation ke liye upar diya gaya calculator use karein.
What are the dimensions of ISA 40×40×5?
ISA 40×40×5 per IS 808:1989 has a leg length of 40 mm, thickness of 5 mm, and root radius of 6.0 mm. The cross-sectional area is 3.79 cm².
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