W40X215 Steel Beam — Section Properties
Dimensions
| Property | Value | Unit |
|---|---|---|
| Depth (d) | 39 | in (990.6 mm) |
| Flange Width (bf) | 15.80 | in (401.3 mm) |
| Flange Thickness (tf) | 1.22 | in |
| Web Thickness (tw) | 0.65 | in |
| Area (A) | 63.50 | in² (409.7 cm²) |
| Weight | 215 | lb/ft (320 kg/m) |
Elastic Section Properties
| Property | Strong Axis (X-X) | Weak Axis (Y-Y) | Unit |
|---|---|---|---|
| Moment of Inertia (I) | 16,700 | 803 | in⁴ |
| Elastic Section Modulus (S) | 859 | 101 | in³ |
| Plastic Section Modulus (Z) | 964 | 156 | in³ |
| Radius of Gyration (r) | 16.20 | 3.54 | in |
Torsional Properties
| Property | Value | Unit |
|---|---|---|
| Torsional Constant (J) | 24.80 | in⁴ |
| Warping Constant (Cw) | 284,000 | in⁶ |
| Distance Between Flange Centroids (ho) | 37.80 | in |
| Effective Radius (rts) | 4.19 | in |
Design Resources
- Beam Capacity Calculator — Check W40X215 for your span and loads
- Column Capacity Calculator — Check W40X215 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 W40X215 beam? 215 lb/ft (320 kg/m). A 40-ft length weighs approximately 8,600 lbs.
What is the section modulus of W40X215? Sx = 859 in³ (strong axis) and Sy = 101 in³ (weak axis). The plastic section modulus Zx = 964 in³ and Zy = 156 in³.
What steel grade is standard for W40X215? 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 W40X215? Ix = 16700 in⁴ about the strong axis and Iy = 803 in⁴ about the weak axis. The radius of gyration is rx = 16.20 in and ry = 3.54 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.