Steel Section Catalog
Barra 8mm
BR — Round Bar
Round bars are solid circular sections used for bracing rods, ties, anchor bolts, and secondary structural elements.
The Barra 8mm steel profile weighs 0.4 kg/m (0.27 lb/ft). Cross-sectional area: 50.3 mm². Moment of inertia Ix = 0.02 cm⁴, Iy = 0.02 cm⁴.
Cross-section (not to scale)
Imperial equivalent: Ø8 mm = 5/16" (fractional inch diameter)
Dimensions
| Property | Metric | Imperial |
|---|---|---|
| Diameter (d) | 8 mm | 0.31 in |
| Weight | 0.4 kg/m | 0.27 lb/ft |
Section Properties
| Property | Metric | Imperial |
|---|---|---|
| Area (A) | 50.3 mm² | 0.078 in² |
| Moment of inertia (Ix) | 0.02 cm⁴ | 0.00 in⁴ |
| Moment of inertia (Iy) | 0.02 cm⁴ | 0.00 in⁴ |
| Elastic section modulus (Sx) | 0.05 cm³ | 0.003 in³ |
| Elastic section modulus (Sy) | 0.05 cm³ | 0.003 in³ |
| Plastic section modulus (Zx) | 0.09 cm³ | 0.005 in³ |
| Plastic section modulus (Zy) | 0.09 cm³ | 0.005 in³ |
| Radius of gyration (rx) | 0.2 cm | 0.079 in |
| Radius of gyration (ry) | 0.2 cm | 0.079 in |
Beam Calculator— Barra 8mm
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mfixed @ 0mfixed @ 6m→kN/m
Results — Barra 8mm
Mmax
15.0 kN·m
Vmax
15.0 kN
δmax
421875.00 mm
L/0
R115.0 kN| 15.0 kN·mR215.0 kN| -15.0 kN·m
Standard:
