RHS 100×40/4 is a cold-formed rectangular hollow section per EN 10219: height 100 mm, width 40 mm, wall thickness 4 mm, weight 8 kg/m, cross-section area 10.2 cm², moment of inertia Iy = 115.7 cm⁴, elastic section modulus Wel,y = 23.1 cm³.
Geometry
Height h100.00 mm
Width b40.00 mm
Wall thickness t4.00 mm
Outer corner radius ro8.00 mm
Inner corner radius ri4.00 mm
Cross-section area A10.150 cm²
Weight G steel 7850 kg/m³7.97kg/m
Section properties
Axis yAxis z
IⓘSecond moment of area about y-axis (strong axis)115.700 cm⁴26.690 cm⁴
WelⓘElastic section modulus23.140 cm³13.350 cm³
WplⓘPlastic section modulus30.260 cm³15.650 cm³
ItⓘSt. Venant torsion constant: resistance to uniform torsion74.530 cm⁴