CHS 33.7×4

Circular hollow sections from Eurocode 3 UK National Annex and ArcelorMittal Sections 2026-1.

33.7 mm33.7 mm

Outline drawn from the published dimensions. Fillets and root radii are not shown.

Dimensions

PropertyMetricImperial
Thickness, t4 mm0.15748 in
Outside diameter33.7 mm1.3268 in
Inside diameter25.7 mm1.0118 in

Bending about the major axis

PropertyMetricImperial
Second moment of area, Iₓ41,900 mm⁴0.100665 in⁴
Elastic modulus, Sₓ2,490 mm³0.151949 in³
Plastic modulus, Zₓ3,550 mm³0.216634 in³
Radius of gyration, rₓ10.6 mm0.417323 in
Distance to top fibre16.85 mm0.663386 in
Distance to bottom fibre16.85 mm0.663386 in

Bending about the minor axis

PropertyMetricImperial
Second moment of area, I_y41,900 mm⁴0.100665 in⁴
Elastic modulus, S_y2,490 mm³0.151949 in³
Plastic modulus, Z_y3,550 mm³0.216634 in³
Radius of gyration, r_y10.6 mm0.417323 in

Torsion and warping

PropertyMetricImperial
Torsion constant, J83,800 mm⁴0.20133 in⁴

Mass

PropertyMetricImperial
Mass per metre2.93 kg/m1.9689 lb/ft
Analyse a beam with this section
↑↓ to move · ↵ to open · esc to close⌘K