CivilAxisCivilAxis
☕ Support🌐 Community

CF RHS 80×40×3 - Section Properties

The CF RHS 80×40×3 is a rectangular hollow section with a mass of 5.19 kg/m, an overall depth of 80 mm and width of 40 mm and a wall thickness of 3 mm. It has a cross-sectional area of 6.61 cm², a second moment of area Iᵧ of 52.3 cm⁴, a plastic modulus Wₚₗ,ᵧ of 16.5 cm³, to BS EN 10219-2:2006 (SCI P363 Blue Book).

Mass
5.19 kg/m
Depth
80 mm
Width
40 mm
Wall thickness
3 mm
Area
6.61 cm²
🔍 Open the full Steel CatalogueRun EC3 capacity checks on CF RHS 80×40×3📖 Design theory📐 Worked example
CF RHS 80×40×3 section profile
mass (kg/m)5.19
t (mm)3
Iy (cm⁴)52.3
Iz (cm⁴)17.6
iy (cm)2.81
iz (cm)1.63
Wel,y (cm³)13.1
Wel,z (cm³)8.78
Wpl,y (cm³)16.5
Wpl,z (cm³)10.2
A (cm²)6.61
SA/m (m²/m)0.23
SA/t (m²/t)44.4

Related RHS Cold-formed sizes

CF RHS 70×40×5CF RHS 70×50×3CF RHS 70×50×4CF RHS 70×50×5CF RHS 80×40×4CF RHS 80×40×5CF RHS 80×50×3CF RHS 80×50×4

Learn more

📘 How to read a steel section table (UB, UC, IPE, HE)📘 Section modulus explained: elastic (Wel) vs plastic (Wpl)📘 SHS vs RHS vs CHS: choosing a hollow steel section
All RHS Cold-formed sizes
Rectangular Hollow Sections - Cold-formed (BS EN 10219)
Full steel section tables
Every UB, UC, hollow, channel & angle section
Open the interactive tool
Search, compare & run EC3 capacity checks
Rate this
No ratings yet
Sign in to join the discussion.
Loading…