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RHS 90×50×8 - Section Properties

The RHS 90×50×8 is a rectangular hollow section with a mass of 15 kg/m, an overall depth of 90 mm and width of 50 mm and a wall thickness of 8 mm. It has a cross-sectional area of 19.2 cm², a second moment of area Iᵧ of 174 cm⁴, a plastic modulus Wₚₗ,ᵧ of 51.4 cm³, to BS EN 10210-2:2006 (SCI P363 Blue Book).

Mass
15 kg/m
Depth
90 mm
Width
50 mm
Wall thickness
8 mm
Area
19.2 cm²
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RHS 90×50×8 section profile
mass (kg/m)15
t (mm)8
Iy (cm⁴)174
Iz (cm⁴)64.6
iy (cm)3.01
iz (cm)1.84
Wel,y (cm³)38.6
Wel,z (cm³)25.8
Wpl,y (cm³)51.4
Wpl,z (cm³)32.9
A (cm²)19.2
SA/m (m²/m)0.259
SA/t (m²/t)17.2

Related RHS Hot-finished sizes

RHS 90×50×4RHS 90×50×5RHS 90×50×6.3RHS 90×50×7.1RHS 100×50×3RHS 100×50×3.2RHS 100×50×3.6RHS 100×50×4

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📘 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 →
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Rectangular Hollow Sections - Hot-finished (BS EN 10210)
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