HSS20X8X3/4 Steel Rectangular HSS — Section Properties
Dimensions
| Property | Value | Unit |
|---|---|---|
| Height (h) | 20 | 508.0 mm |
| Width (w) | 8 | 203.2 mm |
| Wall Thickness (t) | 0.75 | 19.0 mm |
| Area (A) | 35.9 in² | 231.6 cm² |
| Weight | 130.3 lb/ft | 193.9 kg/m |
Elastic Section Properties
| Property | Strong Axis (X-X) | Weak Axis (Y-Y) | Unit |
|---|---|---|---|
| Moment of Inertia (I) | 1670 | 388 | in⁴ |
| Elastic Section Modulus (S) | 167 | 97.1 | in³ |
| Plastic Section Modulus (Z) | 216 | 112 | in³ |
| Radius of Gyration (r) | 6.82 | 3.29 | in |
Torsional Properties
| Property | Value | Unit |
|---|---|---|
| Torsional Constant (J) | 1060 | in⁴ |
| Warping Constant (Cw) | 0 | in⁶ |
Design Resources
- Section Properties Database — Compare with other sections
- Steel Grades Reference — Material properties
Frequently Asked Questions
What is the weight of a HSS20X8X3/4 section? 130.3 lb/ft (193.9 kg/m).
What is the section modulus of HSS20X8X3/4? Sx = 167 in³, Zx = 216 in³ (strong axis). Sy = 97.1 in³, Zy = 112 in³ (weak axis).
What steel grade is standard for HSS20X8X3/4? ASTM A500 Grade C (Fy = 50 ksi) or Grade B (Fy = 46 ksi). Verify with mill certificate.
What is the moment of inertia of HSS20X8X3/4? Ix = 1670 in⁴ about the strong axis and Iy = 388 in⁴ about the weak axis. The radius of gyration is rx = 6.82 in and ry = 3.29 in.
Related Pages
Educational reference only. Verify all section properties against the current AISC Manual and mill certificates before design. Results are PRELIMINARY — NOT FOR CONSTRUCTION.