CHS 299x11 GOST · Weight & Dimensions
GOST, cold-formed sections · Circular Hollow Section
Circular Hollow Sections (CHS) are round tubular profiles with the most efficient cross-section for compression. Used for columns, trusses, and architectural structures.
Also known as: Caño estructural redondo (Argentina)
The CHS 299x11 steel profile weighs 78.1 kg/m (52.50 lb/ft). Cross-sectional area: 9,952.566 mm². Moment of inertia Ix = 10,333.873 cm⁴, Iy = 10,333.873 cm⁴.
Cross-section (not to scale)
Dimensions
| Property | Metric | Imperial |
|---|---|---|
| Thickness (t) | 11 mm | 0.43 in |
| Diameter (d) | 299 mm | 11.77 in |
| Weight | 78.1 kg/m | 52.50 lb/ft |
Section Properties
| Property | Metric | Imperial |
|---|---|---|
| Area (A) | 9,952.57 mm² | 15.426 in² |
| Moment of inertia (Ix) | 10,333.87 cm⁴ | 248.27 in⁴ |
| Moment of inertia (Iy) | 10,333.87 cm⁴ | 248.27 in⁴ |
| Elastic section modulus (Sx) | 691.23 cm³ | 42.182 in³ |
| Elastic section modulus (Sy) | 691.23 cm³ | 42.182 in³ |
| Plastic section modulus (Zx) | 912.83 cm³ | 55.704 in³ |
| Plastic section modulus (Zy) | 912.83 cm³ | 55.704 in³ |
| Radius of gyration (rx) | 10.19 cm | 4.012 in |
| Radius of gyration (ry) | 10.19 cm | 4.012 in |
Beam Calculator— CHS 299x11
drag to orbit
mfixed @ 0mfixed @ 6m→kN/m
Results — CHS 299x11
Mmax
15.0 kN·m
Vmax
15.0 kN
δmax
0.82 mm
L/7349
R115.0 kN| 15.0 kN·mR215.0 kN| -15.0 kN·m
Standard:
