StructureCalcsISA 80x80x10
Angle (ISA) · IS 808 · India
ISA 80x80x10 is an Indian standard angle with 80 × 80 mm legs, 10.0 mm thick, weighing 11.6 kg/m. The dimensions below are the published IS 808 values; the drawing is generated from them.
ISA angles brace and connect Indian steelwork; an angle bends about tilted principal axes, and the derived principal values below carry their angle.
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Published dimensions
| Property | Metric | Imperial |
|---|---|---|
| Leg length, d | 80 mm | 3.15 in |
| Thickness, t | 10.0 mm | 0.394 in |
| Mass per metre | 11.6 kg/m | 7.8 lb/ft |
| Area, A | 1,470 mm² | 2.28 in² |
| Second moment, Ix | 872,000 mm⁴ | 2.1 in⁴ |
| Second moment, Iy | 872,000 mm⁴ | 2.1 in⁴ |
Derived section properties
Integrated from a square-cornered outline — the fillet radii this family really has are not drawn, so the computed values differ slightly from published. For ISA 80x80x10 the computed area is 2.04% from published and Ix 2.05%. Where a value is also published, the published one above is the one to quote.
| Property | Value |
|---|---|
| Elastic modulus, Zex | 15,796 mm³ |
| Elastic modulus, Zey | 15,796 mm³ |
| Plastic modulus, Zpx | 28,469 mm³ |
| Plastic modulus, Zpy | 28,469 mm³ |
| Radius of gyration, rx | 24.4 mm |
| Radius of gyration, ry | 24.4 mm |
| Principal maximum, Imax (derived) | 1,412,500 mm⁴ |
| Principal minimum, Imin (derived) | 367,167 mm⁴ |
| Principal axis angle, θp | 45.0° |
Ze is the elastic modulus and Zp the plastic modulus, following IS 800 notation.
Neighbouring sizes
Where these numbers come from
Published IS 808 values. How StructureCalcs verifies its numbers · Understanding steel section properties · Query this section over the API