Steel Beam Sizes / UK / RHS / RHS 400×300×11

RHS 400×300×11 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 400×300×11 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 77.95 lb/ft 116.00 kg/m
Height 15.75 in 400.00 mm
Width 11.81 in 300.00 mm
t 0.433 in 11.000 mm
Area 22.94 in² 14,800.00 mm²
Ix 824.06 in⁴ 343,000,000 mm⁴
Iy 528.55 in⁴ 220,000,000 mm⁴
Sx 104.96 in³ 1,720,000 mm³
Sy 89.70 in³ 1,470,000 mm³
Zx 124.49 in³ 2,040,000 mm³
Zy 102.52 in³ 1,680,000 mm³
rx 5.98 in 152.00 mm
ry 4.80 in 122.00 mm
J 1,001.85 in⁴ 417,000,000 mm⁴

Alternatives

Useful nearby sections

Same-series weight neighbors, closest Ix, and a nearby depth series when available — with percent change versus RHS 400×300×11.

Lighter in Rectangular hollow sections

RHS 300×200×16

Weight
115.0 kg/m (-0.9%)
Depth
300.0 mm (-25%)
Ix
174,000,000 mm⁴ (-49%)

Heavier in Rectangular hollow sections

RHS 500×300×10

Weight
122.0 kg/m (+5.2%)
Depth
500.0 mm (+25%)
Ix
538,000,000 mm⁴ (+57%)

Closest Iₓ in Rectangular hollow sections

RHS 500×200×8

Weight
85.4 kg/m (-26%)
Depth
500.0 mm (+25%)
Ix
340,000,000 mm⁴ (-0.9%)
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Source: British-Sections-1 and Eurocode 3 UK shared angle/hollow tables · v2023.11 · Hot-finished hollow sections · Methodology