Steel Beam Sizes / UK / RHS / RHS 220×120×12.5

RHS 220×120×12.5 Steel Beam Dimensions and Properties

UK Rectangular hollow sections · v2023.11

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Diagram, properties emphasis, and nearby alternatives use the selected unit system.

Units

Section diagram

RHS 220×120×12.5 dimensions

Not to scale. Dimensions shown for reference.

Section properties

Symbols match the steel section finder. Imperial and metric values are shown side by side.

Property Imperial Metric
Weight 40.65 lb/ft 60.50 kg/m
Height 8.66 in 220.00 mm
Width 4.72 in 120.00 mm
t 0.492 in 12.500 mm
Area 11.95 in² 7,710.00 mm²
Ix 109.55 in⁴ 45,600,000 mm⁴
Iy 41.08 in⁴ 17,100,000 mm⁴
Sx 25.32 in³ 415,000.00 mm³
Sy 17.39 in³ 285,000.00 mm³
Zx 32.34 in³ 530,000.00 mm³
Zy 20.81 in³ 341,000.00 mm³
rx 3.03 in 76.90 mm
ry 1.85 in 47.10 mm
J 98.26 in⁴ 40,900,000 mm⁴

Alternatives

Useful nearby sections

Same-series weight neighbors, closest Ix, and a nearby depth series when available — with percent change versus RHS 220×120×12.5.

Lighter in Rectangular hollow sections

RHS 300×200×8

Weight
60.3 kg/m (-0.3%)
Depth
300.0 mm (+36%)
Ix
97,200,000 mm⁴ (+113%)

Heavier in Rectangular hollow sections

RHS 200×150×12.5

Weight
62.5 kg/m (+3.3%)
Depth
200.0 mm (-9.1%)
Ix
42,400,000 mm⁴ (-7.0%)

Closest Iₓ in Rectangular hollow sections

RHS 300×100×5.6

Weight
33.9 kg/m (-44%)
Depth
300.0 mm (+36%)
Ix
46,000,000 mm⁴ (+0.9%)
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Source: British-Sections-1 and Eurocode 3 UK shared angle/hollow tables · v2023.11 · Hot-finished hollow sections · Methodology