Steel Beam Sizes / AISC / Pipe / Pipe1-1/4STD

Pipe1-1/4STD Steel Beam Dimensions and Properties

AISC Pipe sections · v16.0

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

Units

Section diagram

Pipe1-1/4STD 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 2.27 lb/ft 3.38 kg/m
OD 1.660 in 42.200 mm
Nominal tw 0.140 in 3.560 mm
Design tw 0.130 in 3.300 mm
Area 0.63 in² 403.00 mm²
Ix 0.18 in⁴ 76,600.00 mm⁴
Iy 0.18 in⁴ 76,600.00 mm⁴
Sx 0.22 in³ 3,640.00 mm³
Sy 0.22 in³ 3,640.00 mm³
Zx 0.31 in³ 5,000.00 mm³
Zy 0.31 in³ 5,000.00 mm³
rx 0.54 in 13.80 mm
ry 0.54 in 13.80 mm
J 0.37 in⁴ 153,000.00 mm⁴

Alternatives

Useful nearby sections

Same-series weight neighbors, closest Ix, and a nearby depth series when available — with percent change versus Pipe1-1/4STD.

Lighter in Pipe sections

Pipe1xS

Weight
2.2 lb/ft (-4.4%)
Depth
— in
Ix
0.1 in⁴ (-45%)

Heavier in Pipe sections

Pipe1-1/2STD

Weight
2.7 lb/ft (+20%)
Depth
— in
Ix
0.3 in⁴ (+59%)

Closest Iₓ in Pipe sections

Pipe1-1/4xS

Weight
3.0 lb/ft (+32%)
Depth
— in
Ix
0.2 in⁴ (+26%)
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Source: AISC Shapes Database v16.0 · Methodology