Steel Beam Sizes / UK / Universal Columns / UC 305×305×198

UC 305×305×198 Steel Beam Dimensions and Properties

UK Universal columns · v2023.11

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Diagram, properties emphasis, and nearby alternatives use the selected unit system.

Units

Section diagram

UC 305×305×198 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 133.05 lb/ft 198.00 kg/m
Depth, d 13.38 in 339.90 mm
Flange width, bf 12.38 in 314.50 mm
tw 0.752 in 19.100 mm
tf 1.236 in 31.400 mm
Area 39.06 in² 25,200.00 mm²
Ix 1,222.88 in⁴ 509,000,000 mm⁴
Iy 391.61 in⁴ 163,000,000 mm⁴
Sx 183.07 in³ 3,000,000 mm³
Sy 63.46 in³ 1,040,000 mm³
Zx 209.92 in³ 3,440,000 mm³
Zy 96.42 in³ 1,580,000 mm³
rx 5.59 in 142.00 mm
ry 3.17 in 80.40 mm
J 17.63 in⁴ 7,340,000 mm⁴
Cw 14,411.48 in⁶ 3,870,000,000,000 mm⁶

Alternatives

Useful nearby sections

Same-series weight neighbors, closest Ix, and a nearby depth series when available — with percent change versus UC 305×305×198.

Lighter in Universal columns

UC 356×368×177

Weight
177.0 kg/m (-11%)
Depth
368.2 mm (+8.3%)
Ix
571,000,000 mm⁴ (+12%)

Heavier in Universal columns

UC 356×368×202

Weight
202.0 kg/m (+2.0%)
Depth
374.6 mm (+10%)
Ix
663,000,000 mm⁴ (+30%)

Closest Iₓ in Universal columns

UC 356×368×153

Weight
153.0 kg/m (-23%)
Depth
362.0 mm (+6.5%)
Ix
486,000,000 mm⁴ (-4.5%)
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Source: British-Sections-1 and Eurocode 3 UK shared angle/hollow tables · v2023.11 · Methodology