Pipe2-1/2STD pipe

Detailing dimensions and section properties from the AISC Shapes Database, 16th Edition. Values are shown to the nearest 1/16 in. as they appear on a shop drawing.

Pipe2-1/2STD has a 2 7/8 in. outside diameter and a 3/16 in. nominal wall.

Also known as NPS 2-1/2 pipe (2-1/2 in. nominal), Schedule 40 (STD) wall.

At 5.8 lb per foot it is one of the 6 Pipe2 sizes, which run from 3.66 to 13.7 lb/ft.

For strong-axis bending its section modulus is Sx = 1.01 in³ and its moment of inertia Ix = 1.45 in⁴, with a plastic modulus Zx = 1.37 in³.

Detailing dimensions

Outside diameter2 7/8"
Nominal wall (t)3/16"

Section properties

Weight5.8 lb/ft
Area (A)1.61 in²
Ix1.45 in⁴
Sx1.01 in³
Zx1.37 in³
rx0.952 in
Iy1.45 in⁴
Sy1.01 in³
Zy1.37 in³
ry0.952 in
J2.89 in⁴

Other Pipe2 sizes

Same nominal size, different weight — useful when you are checking a substitution or a lighter section.

Pipe2STDPipe2XSPipe2-1/2XSPipe2XXSPipe2-1/2XXS

Similar weight pipe sizes

Comparable 5.8 lb/ft sections in other pipe sizes.

Pipe3STD7.58 lb/ft · Sx 1.63 in³Pipe1-1/2XS3.63 lb/ft · Sx 0.392 in³Pipe1-1/4XS3 lb/ft · Sx 0.278 in³Pipe1-1/2STD2.72 lb/ft · Sx 0.309 in³Pipe3-1/2STD9.12 lb/ft · Sx 2.26 in³Pipe1-1/4STD2.27 lb/ft · Sx 0.222 in³Pipe1XS2.17 lb/ft · Sx 0.154 in³Pipe1STD1.68 lb/ft · Sx 0.126 in³

Detailing values are rounded to the nearest 1/16 in. per the AISC Steel Construction Manual. Verify critical dimensions against the current Manual before fabrication. Need Pipe2-1/2STD cut, formed, or fabricated? Huntington Steel & Supply Co.

Browse more: Pipe · Steel Beam Size Chart

Interactive drawing