RHS 80×40/8 is a hot-finished rectangular hollow section per EN 10210: height 80 mm, width 40 mm, wall thickness 8 mm, weight 12.5 kg/m, cross-section area 16 cm², moment of inertia Iy = 106 cm⁴, elastic section modulus Wel,y = 26.5 cm³.
Geometry
Height h80.00 mm
Width b40.00 mm
Wall thickness t8.00 mm
Outer corner radius ro12.00 mm
Inner corner radius ri8.00 mm
Cross-section area A15.950 cm²
Weight G steel 7850 kg/m³12.50kg/m
Section properties
Axis yAxis z
IⓘSecond moment of area about y-axis (strong axis)106.000 cm⁴32.110 cm⁴
WelⓘElastic section modulus26.500 cm³16.050 cm³
WplⓘPlastic section modulus36.470 cm³21.200 cm³
ItⓘSt. Venant torsion constant: resistance to uniform torsion85.760 cm⁴