CHS 121x7 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 121x7 steel profile weighs 19.7 kg/m (13.22 lb/ft). Cross-sectional area: 2,506.991 mm². Moment of inertia Ix = 408.796 cm⁴, Iy = 408.796 cm⁴.
Cross-section (not to scale)
Dimensions
| Property | Metric | Imperial |
|---|---|---|
| Thickness (t) | 7 mm | 0.28 in |
| Diameter (d) | 121 mm | 4.76 in |
| Weight | 19.7 kg/m | 13.22 lb/ft |
Section Properties
| Property | Metric | Imperial |
|---|---|---|
| Area (A) | 2,506.99 mm² | 3.886 in² |
| Moment of inertia (Ix) | 408.8 cm⁴ | 9.82 in⁴ |
| Moment of inertia (Iy) | 408.8 cm⁴ | 9.82 in⁴ |
| Elastic section modulus (Sx) | 67.57 cm³ | 4.123 in³ |
| Elastic section modulus (Sy) | 67.57 cm³ | 4.123 in³ |
| Plastic section modulus (Zx) | 91.09 cm³ | 5.558 in³ |
| Plastic section modulus (Zy) | 91.09 cm³ | 5.558 in³ |
| Radius of gyration (rx) | 4.04 cm | 1.590 in |
| Radius of gyration (ry) | 4.04 cm | 1.590 in |
Beam Calculator— CHS 121x7
drag to orbit
mfixed @ 0mfixed @ 6m→kN/m
Results — CHS 121x7
Mmax
15.0 kN·m
Vmax
15.0 kN
δmax
20.64 mm
L/291
R115.0 kN| 15.0 kN·mR215.0 kN| -15.0 kN·m
Standard:
