Steel Section Catalog
Barra 20mm
BR — Round Bar
Round bars are solid circular sections used for bracing rods, ties, anchor bolts, and secondary structural elements.
The Barra 20mm steel profile weighs 2.5 kg/m (1.66 lb/ft). Cross-sectional area: 314.2 mm². Moment of inertia Ix = 0.79 cm⁴, Iy = 0.79 cm⁴.
Cross-section (not to scale)
Imperial equivalent: Ø20 mm = 3/4" (fractional inch diameter)
Dimensions
| Property | Metric | Imperial |
|---|---|---|
| Diameter (d) | 20 mm | 0.79 in |
| Weight | 2.5 kg/m | 1.66 lb/ft |
Section Properties
| Property | Metric | Imperial |
|---|---|---|
| Area (A) | 314.2 mm² | 0.487 in² |
| Moment of inertia (Ix) | 0.79 cm⁴ | 0.02 in⁴ |
| Moment of inertia (Iy) | 0.79 cm⁴ | 0.02 in⁴ |
| Elastic section modulus (Sx) | 0.79 cm³ | 0.048 in³ |
| Elastic section modulus (Sy) | 0.79 cm³ | 0.048 in³ |
| Plastic section modulus (Zx) | 1.33 cm³ | 0.081 in³ |
| Plastic section modulus (Zy) | 1.33 cm³ | 0.081 in³ |
| Radius of gyration (rx) | 0.5 cm | 0.197 in |
| Radius of gyration (ry) | 0.5 cm | 0.197 in |
Beam Calculator— Barra 20mm
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mfixed @ 0mfixed @ 6m→kN/m
Results — Barra 20mm
Mmax
15.0 kN·m
Vmax
15.0 kN
δmax
10680.38 mm
L/1
R115.0 kN| 15.0 kN·mR215.0 kN| -15.0 kN·m
Standard:
