W33X387 Steel Beam — Section Properties
Dimensions
| Property | Value | Unit |
|---|---|---|
| Depth (d) | 36 | in (914.4 mm) |
| Flange Width (bf) | 16.20 | in (411.5 mm) |
| Flange Thickness (tf) | 2.28 | in |
| Web Thickness (tw) | 1.26 | in |
| Area (A) | 114 | in² (735.5 cm²) |
| Weight | 387 | lb/ft (576 kg/m) |
Elastic Section Properties
| Property | Strong Axis (X-X) | Weak Axis (Y-Y) | Unit |
|---|---|---|---|
| Moment of Inertia (I) | 24,300 | 1,620 | in⁴ |
| Elastic Section Modulus (S) | 1,350 | 200 | in³ |
| Plastic Section Modulus (Z) | 1,560 | 312 | in³ |
| Radius of Gyration (r) | 14.60 | 3.77 | in |
Torsional Properties
| Property | Value | Unit |
|---|---|---|
| Torsional Constant (J) | 148 | in⁴ |
| Warping Constant (Cw) | 459,000 | in⁶ |
| Distance Between Flange Centroids (ho) | 33.70 | in |
| Effective Radius (rts) | 4.49 | in |
Design Resources
- Beam Capacity Calculator — Check W33X387 for your span and loads
- Column Capacity Calculator — Check W33X387 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 W33X387 beam? 387 lb/ft (576 kg/m). A 40-ft length weighs approximately 15,480 lbs.
What is the section modulus of W33X387? Sx = 1350 in³ (strong axis) and Sy = 200 in³ (weak axis). The plastic section modulus Zx = 1560 in³ and Zy = 312 in³.
What steel grade is standard for W33X387? 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 W33X387? Ix = 24300 in⁴ about the strong axis and Iy = 1620 in⁴ about the weak axis. The radius of gyration is rx = 14.60 in and ry = 3.77 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.