Steel Beam Sizes / AISC / Pipe / Pipe3STD

Pipe3STD 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

Pipe3STD 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 7.58 lb/ft 11.30 kg/m
OD 3.500 in 88.900 mm
Nominal tw 0.216 in 5.490 mm
Design tw 0.201 in 5.110 mm
Area 2.07 in² 1,340.00 mm²
Ix 2.85 in⁴ 1,190,000 mm⁴
Iy 2.85 in⁴ 1,190,000 mm⁴
Sx 1.63 in³ 26,700.00 mm³
Sy 1.63 in³ 26,700.00 mm³
Zx 2.19 in³ 35,900.00 mm³
Zy 2.19 in³ 35,900.00 mm³
rx 1.17 in 29.70 mm
ry 1.17 in 29.70 mm
J 5.69 in⁴ 2,370,000 mm⁴

Alternatives

Useful nearby sections

Same-series weight neighbors, closest Ix, and a nearby depth series when available — with percent change versus Pipe3STD.

Lighter in Pipe sections

Pipe2-1/2STD

Weight
5.8 lb/ft (-23%)
Depth
— in
Ix
1.5 in⁴ (-49%)

Heavier in Pipe sections

Pipe2-1/2xS

Weight
7.7 lb/ft (+1.2%)
Depth
— in
Ix
1.8 in⁴ (-36%)

Closest Iₓ in Pipe sections

Pipe2-1/2xxS

Weight
13.7 lb/ft (+81%)
Depth
— in
Ix
2.8 in⁴ (-2.5%)
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Source: AISC Shapes Database v16.0 · Methodology