RHS 180×100/4 is a hot-finished rectangular hollow section per EN 10210: height 180 mm, width 100 mm, wall thickness 4 mm, weight 16.9 kg/m, cross-section area 21.6 cm², moment of inertia Iy = 944.5 cm⁴, elastic section modulus Wel,y = 104.9 cm³.
Geometry
Height h180.00 mm
Width b100.00 mm
Wall thickness t4.00 mm
Outer corner radius ro6.00 mm
Inner corner radius ri4.00 mm
Cross-section area A21.590 cm²
Weight G steel 7850 kg/m³16.90kg/m
Section properties
Axis yAxis z
IⓘSecond moment of area about y-axis (strong axis)944.500 cm⁴379.400 cm⁴
WelⓘElastic section modulus104.900 cm³75.870 cm³
WplⓘPlastic section modulus128.000 cm³85.160 cm³
ItⓘSt. Venant torsion constant: resistance to uniform torsion852.100 cm⁴