CHS 73x4.78 CISC · Weight & Dimensions
CISC, 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 73x4.78 steel profile weighs 8.0 kg/m (5.40 lb/ft). Cross-sectional area: 1,024.447 mm². Moment of inertia Ix = 59.889 cm⁴, Iy = 59.889 cm⁴.
Cross-section (not to scale)
Gauge equivalent: 4.78 mm ≈ 7 gauge (Manufacturers Standard Gage)
Dimensions
| Property | Metric | Imperial |
|---|---|---|
| Thickness (t) | 4.8 mm | 0.19 in |
| Diameter (d) | 73 mm | 2.87 in |
| Weight | 8.0 kg/m | 5.40 lb/ft |
Section Properties
| Property | Metric | Imperial |
|---|---|---|
| Area (A) | 1,024.45 mm² | 1.588 in² |
| Moment of inertia (Ix) | 59.89 cm⁴ | 1.44 in⁴ |
| Moment of inertia (Iy) | 59.89 cm⁴ | 1.44 in⁴ |
| Elastic section modulus (Sx) | 16.41 cm³ | 1.001 in³ |
| Elastic section modulus (Sy) | 16.41 cm³ | 1.001 in³ |
| Plastic section modulus (Zx) | 22.28 cm³ | 1.360 in³ |
| Plastic section modulus (Zy) | 22.28 cm³ | 1.360 in³ |
| Radius of gyration (rx) | 2.42 cm | 0.952 in |
| Radius of gyration (ry) | 2.42 cm | 0.952 in |
Beam Calculator— CHS 73x4.78
drag to orbit
mfixed @ 0mfixed @ 6m→kN/m
Results — CHS 73x4.78
Mmax
15.0 kN·m
Vmax
15.0 kN
δmax
140.88 mm
L/43
R115.0 kN| 15.0 kN·mR215.0 kN| -15.0 kN·m
Standard:
