Steel Beam Sizes / UK / RHS / RHS 180×100×5.6

RHS 180×100×5.6 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 180×100×5.6 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 15.72 lb/ft 23.40 kg/m
Height 7.09 in 180.00 mm
Width 3.94 in 100.00 mm
t 0.220 in 5.600 mm
Area 4.62 in² 2,980.00 mm²
Ix 30.51 in⁴ 12,700,000 mm⁴
Iy 12.16 in⁴ 5,060,000 mm⁴
Sx 8.60 in³ 141,000.00 mm³
Sy 6.16 in³ 101,000.00 mm³
Zx 10.62 in³ 174,000.00 mm³
Zy 7.02 in³ 115,000.00 mm³
rx 2.57 in 65.40 mm
ry 1.62 in 41.20 mm
J 27.63 in⁴ 11,500,000 mm⁴

Alternatives

Useful nearby sections

Same-series weight neighbors, closest Ix, and a nearby depth series when available — with percent change versus RHS 180×100×5.6.

Lighter in Rectangular hollow sections

RHS 150×100×6.3

Weight
23.1 kg/m (-1.3%)
Depth
150.0 mm (-17%)
Ix
8,980,000 mm⁴ (-29%)

Heavier in Rectangular hollow sections

RHS 200×120×5

Weight
24.1 kg/m (+3.0%)
Depth
200.0 mm (+11%)
Ix
16,800,000 mm⁴ (+32%)

Closest Iₓ in Rectangular hollow sections

RHS 150×100×10

Weight
35.3 kg/m (+51%)
Depth
150.0 mm (-17%)
Ix
12,800,000 mm⁴ (+0.8%)
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Source: British-Sections-1 and Eurocode 3 UK shared angle/hollow tables · v2023.11 · Hot-finished hollow sections · Methodology