Steel Beam Sizes / UK / RHS / RHS 250×100×12.5

RHS 250×100×12.5 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 250×100×12.5 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 42.00 lb/ft 62.50 kg/m
Height 9.84 in 250.00 mm
Width 3.94 in 100.00 mm
t 0.492 in 12.500 mm
Area 12.34 in² 7,960.00 mm²
Ix 135.02 in⁴ 56,200,000 mm⁴
Iy 29.79 in⁴ 12,400,000 mm⁴
Sx 27.46 in³ 450,000.00 mm³
Sy 15.19 in³ 249,000.00 mm³
Zx 36.13 in³ 592,000.00 mm³
Zy 18.25 in³ 299,000.00 mm³
rx 3.31 in 84.10 mm
ry 1.56 in 39.60 mm
J 82.65 in⁴ 34,400,000 mm⁴

Alternatives

Useful nearby sections

Same-series weight neighbors, closest Ix, and a nearby depth series when available — with percent change versus RHS 250×100×12.5.

Lighter in Rectangular hollow sections

RHS 220×120×12.5

Weight
60.5 kg/m (-3.2%)
Depth
220.0 mm (-12%)
Ix
45,600,000 mm⁴ (-19%)

Heavier in Rectangular hollow sections

RHS 200×120×14.2

Weight
63.3 kg/m (+1.3%)
Depth
200.0 mm (-20%)
Ix
39,100,000 mm⁴ (-30%)

Closest Iₓ in Rectangular hollow sections

RHS 300×100×7.1

Weight
42.6 kg/m (-32%)
Depth
300.0 mm (+20%)
Ix
56,800,000 mm⁴ (+1.1%)
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Source: British-Sections-1 and Eurocode 3 UK shared angle/hollow tables · v2023.11 · Hot-finished hollow sections · Methodology