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RHS 180×100×5 - Section Properties

The RHS 180×100×5 is a rectangular hollow section with a mass of 21 kg/m, an overall depth of 180 mm and width of 100 mm and a wall thickness of 5 mm. It has a cross-sectional area of 26.7 cm², a second moment of area Iᵧ of 1150 cm⁴, a plastic modulus Wₚₗ,ᵧ of 157 cm³, to BS EN 10210-2:2006 (SCI P363 Blue Book).

Mass: 21 kg/m
Depth: 180 mm
Width: 100 mm
Wall thickness: 5 mm
Area: 26.7 cm²

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mass (kg/m)21

t (mm)5

I_y (cm⁴)1150

I_z (cm⁴)460

i_y (cm)6.57

i_z (cm)4.15

W_el,y (cm³)128

W_el,z (cm³)92

W_pl,y (cm³)157

W_pl,z (cm³)104

A (cm²)26.7

SA/m (m²/m)0.547

SA/t (m²/t)26.1

Related RHS Hot-finished sizes

RHS 180×60×8.8 RHS 180×60×10 RHS 180×60×12.5 RHS 180×100×4 RHS 180×100×6.3 RHS 180×100×7.1 RHS 180×100×8 RHS 180×100×8.8

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 →

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

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