W18X211 Steel Beam — Section Properties
Dimensions
| Property | Value | Unit |
|---|---|---|
| Depth (d) | 20.70 | in (525.8 mm) |
| Flange Width (bf) | 11.60 | in (294.6 mm) |
| Flange Thickness (tf) | 1.91 | in |
| Web Thickness (tw) | 1.06 | in |
| Area (A) | 62.30 | in² (402.0 cm²) |
| Weight | 211 | lb/ft (314 kg/m) |
Elastic Section Properties
| Property | Strong Axis (X-X) | Weak Axis (Y-Y) | Unit |
|---|---|---|---|
| Moment of Inertia (I) | 4,330 | 493 | in⁴ |
| Elastic Section Modulus (S) | 419 | 85.30 | in³ |
| Plastic Section Modulus (Z) | 490 | 132 | in³ |
| Radius of Gyration (r) | 8.35 | 2.82 | in |
Torsional Properties
| Property | Value | Unit |
|---|---|---|
| Torsional Constant (J) | 58.60 | in⁴ |
| Warping Constant (Cw) | 43,400 | in⁶ |
| Distance Between Flange Centroids (ho) | 18.80 | in |
| Effective Radius (rts) | 3.32 | in |
Design Resources
- Beam Capacity Calculator — Check W18X211 for your span and loads
- Column Capacity Calculator — Check W18X211 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 W18X211 beam? 211 lb/ft (314 kg/m). A 40-ft length weighs approximately 8,440 lbs.
What is the section modulus of W18X211? Sx = 419 in³ (strong axis) and Sy = 85.3 in³ (weak axis). The plastic section modulus Zx = 490 in³ and Zy = 132 in³.
What steel grade is standard for W18X211? 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 W18X211? Ix = 4330 in⁴ about the strong axis and Iy = 493 in⁴ about the weak axis. The radius of gyration is rx = 8.35 in and ry = 2.82 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.