StructureCalcsPipe3-1/2STD
Steel Pipe · AISC Shapes Database v15.0 · United States
Pipe3-1/2STD is a steel pipe section 101.6 mm in outside diameter with a 5.4 mm wall, weighing 13.6 kg/m. The dimensions below are the published AISC Shapes Database v15.0 values; the drawing is generated from them.
Pipe sections are round tubes to ASTM A53 dimensions, tabulated by AISC alongside the HSS range for columns, braces and handrails.
Analyse this section, or combine it with plates and other shapes.
Open Pipe3-1/2STD in the Section CalculatorFree, no sign-up, runs in your browser.
Published dimensions
| Property | Metric | Imperial |
|---|---|---|
| Outside diameter, d | 101.6 mm | 4.00 in |
| Wall thickness, t | 5.4 mm | 0.211 in |
| Mass per metre | 13.6 kg/m | 9.1 lb/ft |
| Area, A | 1,613 mm² | 2.50 in² |
| Second moment, Ix | 1,881,366 mm⁴ | 4.5 in⁴ |
| Second moment, Iy | 1,881,366 mm⁴ | 4.5 in⁴ |
Derived section properties
Integrated analytically from the exact circular tube. For Pipe3-1/2STD the computed area agrees with the published value to 0.48% and Ix to 0.04%. Where a value is also published, the published one above is the one to quote.
AISC tabulates hollow-section properties on the design wall (tdes = 0.93 tnom, per AISC 360), while the published mass reflects the nominal wall — which is why mass and area here differ by about 7% by convention, on every AISC hollow section.
| Property | Value |
|---|---|
| Elastic modulus, Sx | 37,049 mm³ |
| Elastic modulus, Sy | 37,049 mm³ |
| Plastic modulus, Zx | 49,696 mm³ |
| Plastic modulus, Zy | 49,696 mm³ |
| Radius of gyration, rx | 34.1 mm |
| Radius of gyration, ry | 34.1 mm |
S is the elastic modulus and Z the plastic modulus, following AISC 360. Australian and British practice reverse the letters.
Neighbouring sizes
Where these numbers come from
Published AISC Shapes Database v15.0 values. How StructureCalcs verifies its numbers · Understanding steel section properties · Query this section over the API