HS178×178×7.9
Square HSS from CISC Structural Section Tables SST12.1.
Outline drawn from the published dimensions. Fillets and root radii are not shown.
Dimensions
| Property | Metric | Imperial |
|---|---|---|
| Height | 177.8 mm | 7 in |
| Width | 177.8 mm | 7 in |
| Design wall thickness | 7.94 mm | 0.312598 in |
| Nominal wall thickness | 7.94 mm | 0.312598 in |
Bending about the major axis
| Property | Metric | Imperial |
|---|---|---|
| Second moment of area, Iₓ | 24,800,000 mm⁴ | 59.5822 in⁴ |
| Elastic modulus, Sₓ | 279,000 mm³ | 17.0256 in³ |
| Plastic modulus, Zₓ | 330,000 mm³ | 20.1378 in³ |
| Radius of gyration, rₓ | 68.8 mm | 2.7087 in |
| Distance to top fibre | 88.9 mm | 3.5 in |
| Distance to bottom fibre | 88.9 mm | 3.5 in |
Bending about the minor axis
| Property | Metric | Imperial |
|---|---|---|
| Second moment of area, I_y | 24,800,000 mm⁴ | 59.5822 in⁴ |
| Elastic modulus, S_y | 279,000 mm³ | 17.0256 in³ |
| Plastic modulus, Z_y | 330,000 mm³ | 20.1378 in³ |
| Radius of gyration, r_y | 68.8 mm | 2.7087 in |
Torsion and warping
| Property | Metric | Imperial |
|---|---|---|
| Torsion constant, J | 39,800,000 mm⁴ | 95.6199 in⁴ |
Mass
| Property | Metric | Imperial |
|---|---|---|
| Mass per metre | 41.1 kg/m | 27.6 lb/ft |