HSS 18x18x3/4
Square HSS from AISC Shapes Database v16.0. Also designated HSS457.2X457.2X19.0.
Outline drawn from the published dimensions. Fillets and root radii are not shown.
Dimensions
| Property | Metric | Imperial |
|---|---|---|
| Height | 457 mm | 18 in |
| Width | 457 mm | 18 in |
| Design wall thickness | 17.7 mm | 0.698 in |
| Nominal wall thickness | 19.1 mm | 0.75 in |
Bending about the major axis
| Property | Metric | Imperial |
|---|---|---|
| Second moment of area, Iₓ | 966,000,000 mm⁴ | 2,320 in⁴ |
| Elastic modulus, Sₓ | 4,230,000 mm³ | 258 in³ |
| Plastic modulus, Zₓ | 4,950,000 mm³ | 302 in³ |
| Radius of gyration, rₓ | 178 mm | 7.02 in |
| Distance to top fibre | 228.5 mm | 9 in |
| Distance to bottom fibre | 228.5 mm | 9 in |
Bending about the minor axis
| Property | Metric | Imperial |
|---|---|---|
| Second moment of area, I_y | 966,000,000 mm⁴ | 2,320 in⁴ |
| Elastic modulus, S_y | 4,230,000 mm³ | 258 in³ |
| Plastic modulus, Z_y | 4,950,000 mm³ | 302 in³ |
| Radius of gyration, r_y | 178 mm | 7.02 in |
Torsion and warping
| Property | Metric | Imperial |
|---|---|---|
| Torsion constant, J | 1.54000e+9 mm⁴ | 3,690 in⁴ |
Mass
| Property | Metric | Imperial |
|---|---|---|
| Mass per metre | 255 kg/m | 171.16 lb/ft |