Steel Beam Sizes / UK / RHS / RHS 300×100×11

RHS 300×100×11 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 300×100×11 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 43.21 lb/ft 64.30 kg/m
Height 11.81 in 300.00 mm
Width 3.94 in 100.00 mm
t 0.433 in 11.000 mm
Area 12.69 in² 8,190.00 mm²
Ix 197.73 in⁴ 82,300,000 mm⁴
Iy 32.67 in⁴ 13,600,000 mm⁴
Sx 33.50 in³ 549,000.00 mm³
Sy 16.66 in³ 273,000.00 mm³
Zx 44.12 in³ 723,000.00 mm³
Zy 19.53 in³ 320,000.00 mm³
rx 3.94 in 100.00 mm
ry 1.61 in 40.80 mm
J 95.14 in⁴ 39,600,000 mm⁴

Alternatives

Useful nearby sections

Same-series weight neighbors, closest Ix, and a nearby depth series when available — with percent change versus RHS 300×100×11.

Lighter in Rectangular hollow sections

RHS 200×120×14.2

Weight
63.3 kg/m (-1.6%)
Depth
200.0 mm (-33%)
Ix
39,100,000 mm⁴ (-52%)

Heavier in Rectangular hollow sections

RHS 350×250×7.1

Weight
64.9 kg/m (+0.9%)
Depth
350.0 mm (+17%)
Ix
147,000,000 mm⁴ (+79%)

Closest Iₓ in Rectangular hollow sections

RHS 250×150×14.2

Weight
81.1 kg/m (+26%)
Depth
250.0 mm (-17%)
Ix
81,400,000 mm⁴ (-1.1%)
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Source: British-Sections-1 and Eurocode 3 UK shared angle/hollow tables · v2023.11 · Hot-finished hollow sections · Methodology