Steel Beam Sizes / UK / RHS / RHS 180×100×5

RHS 180×100×5 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 180×100×5 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 14.11 lb/ft 21.00 kg/m
Height 7.09 in 180.00 mm
Width 3.94 in 100.00 mm
t 0.197 in 5.000 mm
Area 4.14 in² 2,670.00 mm²
Ix 27.63 in⁴ 11,500,000 mm⁴
Iy 11.05 in⁴ 4,600,000 mm⁴
Sx 7.81 in³ 128,000.00 mm³
Sy 5.61 in³ 92,000.00 mm³
Zx 9.58 in³ 157,000.00 mm³
Zy 6.35 in³ 104,000.00 mm³
rx 2.59 in 65.70 mm
ry 1.63 in 41.50 mm
J 24.99 in⁴ 10,400,000 mm⁴

Alternatives

Useful nearby sections

Same-series weight neighbors, closest Ix, and a nearby depth series when available — with percent change versus RHS 180×100×5.

Lighter in Rectangular hollow sections

RHS 150×100×5.6

Weight
20.7 kg/m (-1.4%)
Depth
150.0 mm (-17%)
Ix
8,140,000 mm⁴ (-29%)

Heavier in Rectangular hollow sections

RHS 100×60×10

Weight
21.1 kg/m (+0.5%)
Depth
100.0 mm (-44%)
Ix
2,990,000 mm⁴ (-74%)

Closest Iₓ in Rectangular hollow sections

RHS 150×100×8.8

Weight
31.5 kg/m (+50%)
Depth
150.0 mm (-17%)
Ix
11,700,000 mm⁴ (+1.7%)
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Source: British-Sections-1 and Eurocode 3 UK shared angle/hollow tables · v2023.11 · Hot-finished hollow sections · Methodology