W27X178 Steel Beam — Section Properties
Dimensions
| Property | Value | Unit |
|---|---|---|
| Depth (d) | 27.80 | in (706.1 mm) |
| Flange Width (bf) | 14.10 | in (358.1 mm) |
| Flange Thickness (tf) | 1.19 | in |
| Web Thickness (tw) | 0.72 | in |
| Area (A) | 52.50 | in² (338.7 cm²) |
| Weight | 178 | lb/ft (265 kg/m) |
Elastic Section Properties
| Property | Strong Axis (X-X) | Weak Axis (Y-Y) | Unit |
|---|---|---|---|
| Moment of Inertia (I) | 7,020 | 555 | in⁴ |
| Elastic Section Modulus (S) | 505 | 78.80 | in³ |
| Plastic Section Modulus (Z) | 570 | 122 | in³ |
| Radius of Gyration (r) | 11.60 | 3.25 | in |
Torsional Properties
| Property | Value | Unit |
|---|---|---|
| Torsional Constant (J) | 20.10 | in⁴ |
| Warping Constant (Cw) | 98,400 | in⁶ |
| Distance Between Flange Centroids (ho) | 26.60 | in |
| Effective Radius (rts) | 3.83 | in |
Design Resources
- Beam Capacity Calculator — Check W27X178 for your span and loads
- Column Capacity Calculator — Check W27X178 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 W27X178 beam? 178 lb/ft (265 kg/m). A 40-ft length weighs approximately 7,120 lbs.
What is the section modulus of W27X178? Sx = 505 in³ (strong axis) and Sy = 78.8 in³ (weak axis). The plastic section modulus Zx = 570 in³ and Zy = 122 in³.
What steel grade is standard for W27X178? 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 W27X178? Ix = 7020 in⁴ about the strong axis and Iy = 555 in⁴ about the weak axis. The radius of gyration is rx = 11.60 in and ry = 3.25 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.