HSS20X12X3/4 Steel Rectangular HSS — Section Properties
Dimensions
| Property | Value | Unit |
|---|---|---|
| Height (h) | 20 | 508.0 mm |
| Width (w) | 12 | 304.8 mm |
| Wall Thickness (t) | 0.75 | 19.0 mm |
| Area (A) | 41.5 in² | 267.7 cm² |
| Weight | 150.8 lb/ft | 224.4 kg/m |
Elastic Section Properties
| Property | Strong Axis (X-X) | Weak Axis (Y-Y) | Unit |
|---|---|---|---|
| Moment of Inertia (I) | 2190 | 988 | in⁴ |
| Elastic Section Modulus (S) | 219 | 165 | in³ |
| Plastic Section Modulus (Z) | 270 | 190 | in³ |
| Radius of Gyration (r) | 7.26 | 4.88 | in |
Torsional Properties
| Property | Value | Unit |
|---|---|---|
| Torsional Constant (J) | 2220 | 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 HSS20X12X3/4 section? 150.8 lb/ft (224.4 kg/m).
What is the section modulus of HSS20X12X3/4? Sx = 219 in³, Zx = 270 in³ (strong axis). Sy = 165 in³, Zy = 190 in³ (weak axis).
What steel grade is standard for HSS20X12X3/4? ASTM A500 Grade C (Fy = 50 ksi) or Grade B (Fy = 46 ksi). Verify with mill certificate.
What is the moment of inertia of HSS20X12X3/4? Ix = 2190 in⁴ about the strong axis and Iy = 988 in⁴ about the weak axis. The radius of gyration is rx = 7.26 in and ry = 4.88 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.