StructureCalcs75 x 50 x 2.5 RHS
Rectangular Hollow Section · AS/NZS 1163 · Australia / New Zealand
75 x 50 x 2.5 RHS is a rectangular hollow section 75 × 50 mm with a 2.5 mm wall, weighing 4.6 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.
Analyse this section, or combine it with plates and other shapes.
Open 75 x 50 x 2.5 RHS in the Section CalculatorFree, no sign-up, runs in your browser.
Published dimensions
| Property | Metric | Imperial |
|---|---|---|
| Overall depth, d | 75 mm | 2.95 in |
| Overall width, b | 50 mm | 1.97 in |
| Wall thickness, t | 2.5 mm | 0.098 in |
| Mass per metre | 4.6 kg/m | 3.1 lb/ft |
| Area, A | 584 mm² | 0.91 in² |
| Second moment, Ix | 449,501 mm⁴ | 1.1 in⁴ |
| Second moment, Iy | 240,012 mm⁴ | 0.6 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 75 x 50 x 2.5 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 | 11,987 mm³ |
| Elastic modulus, Zy | 9,600 mm³ |
| Plastic modulus, Sx | 14,591 mm³ |
| Plastic modulus, Sy | 11,043 mm³ |
| Radius of gyration, rx | 27.7 mm |
| Radius of gyration, ry | 20.3 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