StructureCalcs350 x 250 x 8.0 RHS
Rectangular Hollow Section · AS/NZS 1163 · Australia / New Zealand
350 x 250 x 8.0 RHS is a rectangular hollow section 350 × 250 mm with a 8.0 mm wall, weighing 71.6 kg/m. The dimensions below are the published AS/NZS 1163 values; the drawing is generated from them.
Rectangular Hollow Sections combine one strong axis with clean flat faces for connections, and resist torsion far better than open sections of similar mass.
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Published dimensions
| Property | Metric | Imperial |
|---|---|---|
| Overall depth, d | 350 mm | 13.78 in |
| Overall width, b | 250 mm | 9.84 in |
| Wall thickness, t | 8.0 mm | 0.315 in |
| Mass per metre | 71.6 kg/m | 48.1 lb/ft |
| Area, A | 9,124 mm² | 14.14 in² |
| Second moment, Ix | 160,012,869 mm⁴ | 384.4 in⁴ |
| Second moment, Iy | 95,726,182 mm⁴ | 230.0 in⁴ |
Derived section properties
Integrated from the section's own outline including its outside corner radii, whose arcs are integrated analytically rather than approximated by facets. For 350 x 250 x 8.0 RHS the computed area agrees with the published value to better than 0.01% and Ix to better than 0.01%. Where a value is also published, the published one above is the one to quote.
| Property | Value |
|---|---|
| Elastic modulus, Zx | 914,359 mm³ |
| Elastic modulus, Zy | 765,809 mm³ |
| Plastic modulus, Sx | 1,091,981 mm³ |
| Plastic modulus, Sy | 869,369 mm³ |
| Radius of gyration, rx | 132.4 mm |
| Radius of gyration, ry | 102.4 mm |
Z is the elastic modulus and S the plastic modulus, following AS 4100. Under AISC 360 the letters are reversed.
Neighbouring sizes
Where these numbers come from
Published AS/NZS 1163 values. How StructureCalcs verifies its numbers · Understanding steel section properties · Query this section over the API