Steel Beam Sizes / UK / RHS / RHS 200×100×12.5

RHS 200×100×12.5 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 200×100×12.5 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 35.41 lb/ft 52.70 kg/m
Height 7.87 in 200.00 mm
Width 3.94 in 100.00 mm
t 0.492 in 12.500 mm
Area 10.40 in² 6,710.00 mm²
Ix 75.44 in⁴ 31,400,000 mm⁴
Iy 24.03 in⁴ 10,000,000 mm⁴
Sx 19.16 in³ 314,000.00 mm³
Sy 12.27 in³ 201,000.00 mm³
Zx 24.90 in³ 408,000.00 mm³
Zy 14.95 in³ 245,000.00 mm³
rx 2.69 in 68.40 mm
ry 1.52 in 38.70 mm
J 61.02 in⁴ 25,400,000 mm⁴

Alternatives

Useful nearby sections

Same-series weight neighbors, closest Ix, and a nearby depth series when available — with percent change versus RHS 200×100×12.5.

Lighter in Rectangular hollow sections

RHS 250×150×8.8

Weight
52.2 kg/m (-0.9%)
Depth
250.0 mm (+25%)
Ix
55,500,000 mm⁴ (+77%)

Heavier in Rectangular hollow sections

RHS 300×250×6.3

Weight
52.8 kg/m (+0.2%)
Depth
300.0 mm (+50%)
Ix
91,900,000 mm⁴ (+193%)

Closest Iₓ in Rectangular hollow sections

RHS 220×120×8

Weight
40.2 kg/m (-24%)
Depth
220.0 mm (+10.0%)
Ix
32,000,000 mm⁴ (+1.9%)
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Source: British-Sections-1 and Eurocode 3 UK shared angle/hollow tables · v2023.11 · Hot-finished hollow sections · Methodology