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RHS 120×80×12.5 - Section Properties

The RHS 120×80×12.5 is a rectangular hollow section with a mass of 33 kg/m, an overall depth of 120 mm and width of 80 mm and a wall thickness of 12.5 mm. It has a cross-sectional area of 42.1 cm², a second moment of area Iᵧ of 692 cm⁴, a plastic modulus Wₚₗ,ᵧ of 153 cm³, to BS EN 10210-2:2006 (SCI P363 Blue Book).

Mass
33 kg/m
Depth
120 mm
Width
80 mm
Wall thickness
12.5 mm
Area
42.1 cm²
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RHS 120×80×12.5 section profile
mass (kg/m)33
t (mm)12.5
Iy (cm⁴)692
Iz (cm⁴)349
iy (cm)4.05
iz (cm)2.88
Wel,y (cm³)115
Wel,z (cm³)87.4
Wpl,y (cm³)153
Wpl,z (cm³)113
A (cm²)42.1
SA/m (m²/m)0.368
SA/t (m²/t)11.2

Related RHS Hot-finished sizes

RHS 120×80×7.1RHS 120×80×8RHS 120×80×8.8RHS 120×80×10RHS 150×100×4RHS 150×100×5RHS 150×100×6.3RHS 150×100×7.1

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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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