W27X281 Steel Beam — Section Properties
Dimensions
| Property | Value | Unit |
|---|---|---|
| Depth (d) | 29.30 | in (744.2 mm) |
| Flange Width (bf) | 14.40 | in (365.8 mm) |
| Flange Thickness (tf) | 1.93 | in |
| Web Thickness (tw) | 1.06 | in |
| Area (A) | 83.10 | in² (536.2 cm²) |
| Weight | 281 | lb/ft (418 kg/m) |
Elastic Section Properties
| Property | Strong Axis (X-X) | Weak Axis (Y-Y) | Unit |
|---|---|---|---|
| Moment of Inertia (I) | 11,900 | 953 | in⁴ |
| Elastic Section Modulus (S) | 814 | 133 | in³ |
| Plastic Section Modulus (Z) | 936 | 206 | in³ |
| Radius of Gyration (r) | 12 | 3.39 | in |
Torsional Properties
| Property | Value | Unit |
|---|---|---|
| Torsional Constant (J) | 79.50 | in⁴ |
| Warping Constant (Cw) | 178,000 | in⁶ |
| Distance Between Flange Centroids (ho) | 27.40 | in |
| Effective Radius (rts) | 4 | in |
Design Resources
- Beam Capacity Calculator — Check W27X281 for your span and loads
- Column Capacity Calculator — Check W27X281 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 W27X281 beam? 281 lb/ft (418 kg/m). A 40-ft length weighs approximately 11,240 lbs.
What is the section modulus of W27X281? Sx = 814 in³ (strong axis) and Sy = 133 in³ (weak axis). The plastic section modulus Zx = 936 in³ and Zy = 206 in³.
What steel grade is standard for W27X281? 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 W27X281? Ix = 11900 in⁴ about the strong axis and Iy = 953 in⁴ about the weak axis. The radius of gyration is rx = 12 in and ry = 3.39 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.