Steel Beam Sizes / UK / RHS / RHS 180×100×8.8

RHS 180×100×8.8 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 180×100×8.8 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 23.92 lb/ft 35.60 kg/m
Height 7.09 in 180.00 mm
Width 3.94 in 100.00 mm
t 0.346 in 8.800 mm
Area 7.04 in² 4,540.00 mm²
Ix 44.45 in⁴ 18,500,000 mm⁴
Iy 17.30 in⁴ 7,200,000 mm⁴
Sx 12.51 in³ 205,000.00 mm³
Sy 8.79 in³ 144,000.00 mm³
Zx 15.81 in³ 259,000.00 mm³
Zy 10.37 in³ 170,000.00 mm³
rx 2.51 in 63.80 mm
ry 1.57 in 39.80 mm
J 40.36 in⁴ 16,800,000 mm⁴

Alternatives

Useful nearby sections

Same-series weight neighbors, closest Ix, and a nearby depth series when available — with percent change versus RHS 180×100×8.8.

Lighter in Rectangular hollow sections

RHS 150×100×10

Weight
35.3 kg/m (-0.8%)
Depth
150.0 mm (-17%)
Ix
12,800,000 mm⁴ (-31%)

Heavier in Rectangular hollow sections

RHS 220×120×7.1

Weight
35.9 kg/m (+0.8%)
Depth
220.0 mm (+22%)
Ix
29,000,000 mm⁴ (+57%)

Closest Iₓ in Rectangular hollow sections

RHS 200×120×5.6

Weight
26.9 kg/m (-24%)
Depth
200.0 mm (+11%)
Ix
18,600,000 mm⁴ (+0.5%)
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Source: British-Sections-1 and Eurocode 3 UK shared angle/hollow tables · v2023.11 · Hot-finished hollow sections · Methodology