Hollow Section — Weight per Meter

Rectangular (RHS) & Circular (CHS) hollow steel sections

1  Material Properties
kg/m³steel density
Typical: 7850 kg/m³ for structural steel, 8000 kg/m³ for stainless steel
2  Section Geometry & Weight Calculation
Rectangular Hollow Section (RHS)
Circular Hollow Section (CHS)
Dimensions
mmheight
mmwidth
mmwall thickness
Cross-section Properties
Agross= H × B=—mm²
Ainner= (H−2t)(B−2t)=—mm²
Asteel= Agross − Ainner=—mm²
Weight per unit length
W= Asteel × ρs / 10⁶
Figure 1 — Rectangular hollow section (RHS) with dimensions
RHS Weight per meter
— kg/m
Section size
—
Dimensions
mmouter diameter
mmwall thickness
Cross-section Properties
Aouter= π D² / 4=—mm²
Ainner= π(D−2t)²/4=—mm²
Asteel= Aouter − Ainner=—mm²
Weight per unit length
W= Asteel × ρs / 10⁶
Figure 2 — Circular hollow section (CHS) with dimensions
CHS Weight per meter
— kg/m
Section size
—
3  Total Weight for Given Length
mmember length
number of members
Wtotal= W × L × n=—kg
4  Quick Reference — Common Section Weights
Rectangular Hollow Sections (RHS)
H × B × t (mm)Asteel (mm²)Weight (kg/m)
Circular Hollow Sections (CHS)
D × t (mm)Asteel (mm²)Weight (kg/m)
Steel density ρ = 7 850 kg/m³ per EN 1993-1-1:2005 (Eurocode 3) §3.2.6
Disclaimer: These calculations are provided for preliminary estimation only. All results shall be independently verified by a licensed structural engineer before use in any design or construction application. The authors accept no liability for errors or omissions.
calculation by Evo Design