M12.5X12.4 Steel Miscellaneous beam — Section Properties
Dimensions
| Property | Value | Unit |
|---|---|---|
| Depth (d) | 12.5 | 317.5 mm |
| Flange Width (bf) | 3.75 | 9.53 cm |
| Flange Thickness (tf) | 0.228 | 5.8 mm |
| Web Thickness (tw) | 0.155 | 3.9 mm |
| Area (A) | 3.63 in² | 23.4 cm² |
| Weight | 12.4 lb/ft | 18.5 kg/m |
Elastic Section Properties
| Property | Strong Axis (X-X) | Weak Axis (Y-Y) | Unit |
|---|---|---|---|
| Moment of Inertia (I) | 89.3 | 2.01 | in⁴ |
| Elastic Section Modulus (S) | 14.2 | 1.07 | in³ |
| Plastic Section Modulus (Z) | 16.5 | 1.68 | in³ |
| Radius of Gyration (r) | 4.96 | 0.744 | in |
Torsional Properties
| Property | Value | Unit |
|---|---|---|
| Torsional Constant (J) | 0.049 | in⁴ |
| Warping Constant (Cw) | 76 | in⁶ |
| Distance Between Flange Centroids (ho) | 12.3 | in |
| Effective Radius (rts) | 0.933 | in |
Design Resources
- Beam Capacity Calculator — Check M12.5X12.4 for your span and loads
- Column Capacity Calculator — Check M12.5X12.4 as a column
- Section Properties Database — Compare with other sections
- Steel Beam Sizes Reference — Full dimension table
- Steel Grades Reference — Material properties
Frequently Asked Questions
What is the weight of a M12.5X12.4 beam? 12.4 lb/ft (18.5 kg/m).
What is the section modulus of M12.5X12.4? Sx = 14.2 in³, Zx = 16.5 in³ (strong axis). Sy = 1.07 in³, Zy = 1.68 in³ (weak axis).
What steel grade is standard for M12.5X12.4? ASTM A36 (Fy = 36 ksi) for M-shapes. Verify with mill certificate.
What is the moment of inertia of M12.5X12.4? Ix = 89.3 in⁴ about the strong axis and Iy = 2.01 in⁴ about the weak axis. The radius of gyration is rx = 4.96 in and ry = 0.744 in.
Related Pages
Educational reference only. Verify all section properties against the current AISC Manual and mill certificates before design. Results are PRELIMINARY — NOT FOR CONSTRUCTION.