W30X148 Steel Beam — Section Properties
Dimensions
| Property | Value | Unit |
|---|---|---|
| Depth (d) | 30.70 | in (779.8 mm) |
| Flange Width (bf) | 10.50 | in (266.7 mm) |
| Flange Thickness (tf) | 1.18 | in |
| Web Thickness (tw) | 0.65 | in |
| Area (A) | 43.60 | in² (281.3 cm²) |
| Weight | 148 | lb/ft (220 kg/m) |
Elastic Section Properties
| Property | Strong Axis (X-X) | Weak Axis (Y-Y) | Unit |
|---|---|---|---|
| Moment of Inertia (I) | 6,680 | 227 | in⁴ |
| Elastic Section Modulus (S) | 436 | 43.30 | in³ |
| Plastic Section Modulus (Z) | 500 | 68 | in³ |
| Radius of Gyration (r) | 12.40 | 2.28 | in |
Torsional Properties
| Property | Value | Unit |
|---|---|---|
| Torsional Constant (J) | 14.50 | in⁴ |
| Warping Constant (Cw) | 49,400 | in⁶ |
| Distance Between Flange Centroids (ho) | 29.50 | in |
| Effective Radius (rts) | 2.77 | in |
Design Resources
- Beam Capacity Calculator — Check W30X148 for your span and loads
- Column Capacity Calculator — Check W30X148 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 W30X148 beam? 148 lb/ft (220 kg/m). A 40-ft length weighs approximately 5,920 lbs.
What is the section modulus of W30X148? Sx = 436 in³ (strong axis) and Sy = 43.3 in³ (weak axis). The plastic section modulus Zx = 500 in³ and Zy = 68 in³.
What steel grade is standard for W30X148? 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 W30X148? Ix = 6680 in⁴ about the strong axis and Iy = 227 in⁴ about the weak axis. The radius of gyration is rx = 12.40 in and ry = 2.28 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.