Steel Beam Sizes / UK / RHS / RHS 160×80×12.5

RHS 160×80×12.5 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 160×80×12.5 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 27.48 lb/ft 40.90 kg/m
Height 6.30 in 160.00 mm
Width 3.15 in 80.00 mm
t 0.492 in 12.500 mm
Area 8.08 in² 5,210.00 mm²
Ix 35.56 in⁴ 14,800,000 mm⁴
Iy 11.17 in⁴ 4,650,000 mm⁴
Sx 11.35 in³ 186,000.00 mm³
Sy 7.08 in³ 116,000.00 mm³
Zx 15.07 in³ 247,000.00 mm³
Zy 8.91 in³ 146,000.00 mm³
rx 2.10 in 53.40 mm
ry 1.18 in 29.90 mm
J 28.83 in⁴ 12,000,000 mm⁴

Alternatives

Useful nearby sections

Same-series weight neighbors, closest Ix, and a nearby depth series when available — with percent change versus RHS 160×80×12.5.

Lighter in Rectangular hollow sections

RHS 220×120×8

Weight
40.2 kg/m (-1.7%)
Depth
220.0 mm (+37%)
Ix
32,000,000 mm⁴ (+116%)

Heavier in Rectangular hollow sections

RHS 200×120×8.8

Weight
41.1 kg/m (+0.5%)
Depth
200.0 mm (+25%)
Ix
27,300,000 mm⁴ (+84%)

Closest Iₓ in Rectangular hollow sections

RHS 150×100×12.5

Weight
42.8 kg/m (+4.6%)
Depth
150.0 mm (-6.3%)
Ix
14,900,000 mm⁴ (+0.7%)
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Source: British-Sections-1 and Eurocode 3 UK shared angle/hollow tables · v2023.11 · Hot-finished hollow sections · Methodology