Steel Beam Sizes / UK / UB Tees / T 171×178×34

T 171×178×34 Steel Beam Dimensions and Properties

UK Tees split from universal beams · v2023.11

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

Units

Section diagram

T 171×178×34 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 22.51 lb/ft 33.50 kg/m
Depth, d 7.15 in 181.60 mm
Flange width, bf 6.82 in 173.20 mm
tw 0.358 in 9.100 mm
tf 0.618 in 15.700 mm
Area 6.62 in² 4,270.00 mm²
Ix 27.63 in⁴ 11,500,000 mm⁴
Iy 16.36 in⁴ 6,810,000 mm⁴
Sx 4.97 in³ 81,500.00 mm³
Sy 4.80 in³ 78,600.00 mm³
Zx 8.85 in³ 145,000.00 mm³
Zy 7.38 in³ 121,000.00 mm³
rx 2.05 in 52.00 mm
ry 1.57 in 39.90 mm
J 0.67 in⁴ 278,000.00 mm⁴
Cw 0.93 in⁶ 249,000,000 mm⁶

Alternatives

Useful nearby sections

Same-series weight neighbors, closest Ix, and a nearby depth series when available — with percent change versus T 171×178×34.

Lighter in Tees split from universal beams

T 165×267×33

Weight
32.8 kg/m (-2.1%)
Depth
262.4 mm (+44%)
Ix
29,600,000 mm⁴ (+157%)

Heavier in Tees split from universal beams

T 152×229×34

Weight
33.6 kg/m (+0.3%)
Depth
228.9 mm (+26%)
Ix
21,200,000 mm⁴ (+84%)

Closest Iₓ in Tees split from universal beams

T 140×203×23

Weight
23.0 kg/m (-31%)
Depth
201.5 mm (+11%)
Ix
11,200,000 mm⁴ (-2.6%)
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Source: British-Sections-1 and Eurocode 3 UK shared angle/hollow tables · v2023.11 · Methodology