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

Pipe1-1/4xS 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

Pipe1-1/4xS 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 3.00 lb/ft 4.46 kg/m
OD 1.660 in 42.200 mm
Nominal tw 0.191 in 4.850 mm
Design tw 0.178 in 4.520 mm
Area 0.84 in² 540.00 mm²
Ix 0.23 in⁴ 96,100.00 mm⁴
Iy 0.23 in⁴ 96,100.00 mm⁴
Sx 0.28 in³ 4,560.00 mm³
Sy 0.28 in³ 4,560.00 mm³
Zx 0.39 in³ 6,440.00 mm³
Zy 0.39 in³ 6,440.00 mm³
rx 0.53 in 13.40 mm
ry 0.53 in 13.40 mm
J 0.46 in⁴ 192,000.00 mm⁴

Alternatives

Useful nearby sections

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

Lighter in Pipe sections

Pipe1-1/2STD

Weight
2.7 lb/ft (-9.3%)
Depth
— in
Ix
0.3 in⁴ (+27%)

Heavier in Pipe sections

Pipe1-1/2xS

Weight
3.6 lb/ft (+21%)
Depth
— in
Ix
0.4 in⁴ (+61%)

Closest Iₓ in Pipe sections

Pipe1-1/4STD

Weight
2.3 lb/ft (-24%)
Depth
— in
Ix
0.2 in⁴ (-20%)
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Source: AISC Shapes Database v16.0 · Methodology