Steel Section Catalog
Barra 12.5mm
BR — Round Bar
Round bars are solid circular sections used for bracing rods, ties, anchor bolts, and secondary structural elements.
The Barra 12.5mm steel profile weighs 1.0 kg/m (0.65 lb/ft). Cross-sectional area: 122.7 mm². Moment of inertia Ix = 0.12 cm⁴, Iy = 0.12 cm⁴.
Cross-section (not to scale)
Imperial equivalent: Ø12.5 mm = 1/2" (fractional inch diameter)
Dimensions
| Property | Metric | Imperial |
|---|---|---|
| Diameter (d) | 12.5 mm | 0.49 in |
| Weight | 1.0 kg/m | 0.65 lb/ft |
Section Properties
| Property | Metric | Imperial |
|---|---|---|
| Area (A) | 122.7 mm² | 0.190 in² |
| Moment of inertia (Ix) | 0.12 cm⁴ | 0.00 in⁴ |
| Moment of inertia (Iy) | 0.12 cm⁴ | 0.00 in⁴ |
| Elastic section modulus (Sx) | 0.19 cm³ | 0.012 in³ |
| Elastic section modulus (Sy) | 0.19 cm³ | 0.012 in³ |
| Plastic section modulus (Zx) | 0.33 cm³ | 0.020 in³ |
| Plastic section modulus (Zy) | 0.33 cm³ | 0.020 in³ |
| Radius of gyration (rx) | 0.31 cm | 0.122 in |
| Radius of gyration (ry) | 0.31 cm | 0.122 in |
Beam Calculator— Barra 12.5mm
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mfixed @ 0mfixed @ 6m→kN/m
Results — Barra 12.5mm
Mmax
15.0 kN·m
Vmax
15.0 kN
δmax
70312.50 mm
L/0
R115.0 kN| 15.0 kN·mR215.0 kN| -15.0 kN·m
Standard:
