W12X305 Steel Beam — Section Properties
Dimensions
| Property | Value | Unit |
|---|---|---|
| Depth (d) | 16.30 | in (414.0 mm) |
| Flange Width (bf) | 13.20 | in (335.3 mm) |
| Flange Thickness (tf) | 2.71 | in |
| Web Thickness (tw) | 1.63 | in |
| Area (A) | 89.50 | in² (577.5 cm²) |
| Weight | 305 | lb/ft (454 kg/m) |
Elastic Section Properties
| Property | Strong Axis (X-X) | Weak Axis (Y-Y) | Unit |
|---|---|---|---|
| Moment of Inertia (I) | 3,550 | 1,050 | in⁴ |
| Elastic Section Modulus (S) | 435 | 159 | in³ |
| Plastic Section Modulus (Z) | 537 | 244 | in³ |
| Radius of Gyration (r) | 6.29 | 3.42 | in |
Torsional Properties
| Property | Value | Unit |
|---|---|---|
| Torsional Constant (J) | 185 | in⁴ |
| Warping Constant (Cw) | 48,600 | in⁶ |
| Distance Between Flange Centroids (ho) | 13.60 | in |
| Effective Radius (rts) | 4.05 | in |
Design Resources
- Beam Capacity Calculator — Check W12X305 for your span and loads
- Column Capacity Calculator — Check W12X305 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 W12X305 beam? 305 lb/ft (454 kg/m). A 40-ft length weighs approximately 12,200 lbs.
What is the section modulus of W12X305? Sx = 435 in³ (strong axis) and Sy = 159 in³ (weak axis). The plastic section modulus Zx = 537 in³ and Zy = 244 in³.
What steel grade is standard for W12X305? 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 W12X305? Ix = 3550 in⁴ about the strong axis and Iy = 1050 in⁴ about the weak axis. The radius of gyration is rx = 6.29 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.