W36X387 Steel Beam — Section Properties
Dimensions
| Property | Value | Unit |
|---|---|---|
| Depth (d) | 39.10 | in (993.1 mm) |
| Flange Width (bf) | 12.70 | in (322.6 mm) |
| Flange Thickness (tf) | 2.56 | in |
| Web Thickness (tw) | 1.42 | 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) | 26,500 | 882 | in⁴ |
| Elastic Section Modulus (S) | 1,360 | 139 | in³ |
| Plastic Section Modulus (Z) | 1,610 | 224 | in³ |
| Radius of Gyration (r) | 15.20 | 2.78 | in |
Torsional Properties
| Property | Value | Unit |
|---|---|---|
| Torsional Constant (J) | 172 | in⁴ |
| Warping Constant (Cw) | 294,000 | in⁶ |
| Distance Between Flange Centroids (ho) | 36.50 | in |
| Effective Radius (rts) | 3.44 | in |
Design Resources
- Beam Capacity Calculator — Check W36X387 for your span and loads
- Column Capacity Calculator — Check W36X387 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 W36X387 beam? 387 lb/ft (576 kg/m). A 40-ft length weighs approximately 15,480 lbs.
What is the section modulus of W36X387? Sx = 1360 in³ (strong axis) and Sy = 139 in³ (weak axis). The plastic section modulus Zx = 1610 in³ and Zy = 224 in³.
What steel grade is standard for W36X387? 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 W36X387? Ix = 26500 in⁴ about the strong axis and Iy = 882 in⁴ about the weak axis. The radius of gyration is rx = 15.20 in and ry = 2.78 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.