Pipe8STD 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.

Pipe8STD has a 8 5/8 in. outside diameter and a 5/16 in. nominal wall.

Also known as NPS 8 pipe (8 in. nominal), Schedule 40 (STD) wall.

At 28.6 lb per foot it is the lightest of the 3 Pipe8 sizes, which run from 28.6 to 72.5 lb/ft.

For strong-axis bending its section modulus is Sx = 15.8 in³ and its moment of inertia Ix = 68.1 in⁴, with a plastic modulus Zx = 20.8 in³.

Detailing dimensions

Outside diameter8 5/8"
Nominal wall (t)5/16"

Section properties

Weight28.6 lb/ft
Area (A)7.85 in²
Ix68.1 in⁴
Sx15.8 in³
Zx20.8 in³
rx2.95 in
Iy68.1 in⁴
Sy15.8 in³
Zy20.8 in³
ry2.95 in
J136 in⁴

Other Pipe8 sizes

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

Pipe8XSPipe8XXS

Similar weight pipe sizes

Comparable 28.6 lb/ft sections in other pipe sizes.

Pipe6XS28.6 lb/ft · Sx 11.6 in³Pipe4XXS27.6 lb/ft · Sx 6.53 in³Pipe5XS20.8 lb/ft · Sx 7.02 in³Pipe6STD19 lb/ft · Sx 7.99 in³Pipe3XXS18.6 lb/ft · Sx 3.31 in³Pipe5XXS38.6 lb/ft · Sx 11.6 in³Pipe10STD40.5 lb/ft · Sx 28.1 in³Pipe4XS15 lb/ft · Sx 4.05 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 Pipe8STD cut, formed, or fabricated? Huntington Steel & Supply Co.

Browse more: Pipe · Steel Beam Size Chart

Interactive drawing