W30X173 Steel Beam — Section Properties
Dimensions
| Property | Value | Unit |
|---|---|---|
| Depth (d) | 30.40 | in (772.2 mm) |
| Flange Width (bf) | 15 | in (381.0 mm) |
| Flange Thickness (tf) | 1.07 | in |
| Web Thickness (tw) | 0.66 | in |
| Area (A) | 50.90 | in² (328.4 cm²) |
| Weight | 173 | lb/ft (257 kg/m) |
Elastic Section Properties
| Property | Strong Axis (X-X) | Weak Axis (Y-Y) | Unit |
|---|---|---|---|
| Moment of Inertia (I) | 8,230 | 598 | in⁴ |
| Elastic Section Modulus (S) | 541 | 79.80 | in³ |
| Plastic Section Modulus (Z) | 607 | 123 | in³ |
| Radius of Gyration (r) | 12.70 | 3.42 | in |
Torsional Properties
| Property | Value | Unit |
|---|---|---|
| Torsional Constant (J) | 15.60 | in⁴ |
| Warping Constant (Cw) | 129,000 | in⁶ |
| Distance Between Flange Centroids (ho) | 29.30 | in |
| Effective Radius (rts) | 4.03 | in |
Design Resources
- Beam Capacity Calculator — Check W30X173 for your span and loads
- Column Capacity Calculator — Check W30X173 as a column
- Section Properties Database — Compare with other sections
- Steel Beam Sizes Reference — Full W-shape dimension table
- Steel Grades Reference — A992/A572 material properties
Frequently Asked Questions
What is the weight of a W30X173 beam? 173 lb/ft (257 kg/m). A 40-ft length weighs approximately 6,920 lbs.
What is the section modulus of W30X173? Sx = 541 in³ (strong axis) and Sy = 79.8 in³ (weak axis). The plastic section modulus Zx = 607 in³ and Zy = 123 in³.
What steel grade is standard for W30X173? Typically ASTM A992 (Fy = 50 ksi, Fu = 65 ksi) for W-shapes. Also available in A572 Grade 50 or A36. Verify with mill certificate.
What is the moment of inertia of W30X173? Ix = 8230 in⁴ about the strong axis and Iy = 598 in⁴ about the weak axis. The radius of gyration is rx = 12.70 in and ry = 3.42 in.
Related Pages
- Steel Beam Sizes Reference
- Beam Capacity Calculator
- Column Capacity Calculator
- Section Properties Database
Educational reference only. Verify all section properties against the current AISC Manual and mill certificates before design. Results are PRELIMINARY — NOT FOR CONSTRUCTION.