HP18×135 H-pile

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.

HP18×135 measures 17 1/2 in. deep with a 17 3/4 in. flange, on a 3/4 in. web and 3/4 in. flanges.

At 135 lb per foot it is the lightest of the 4 HP18 sizes, which run from 135 to 204 lb/ft.

For strong-axis bending its section modulus is Sx = 251 in³ and its moment of inertia Ix = 2200 in⁴, with a plastic modulus Zx = 281 in³.

Detailing dimensions

Depth (d)17 1/2"
Flange width (bf)17 3/4"
Web thickness (tw)3/4"
Flange thickness (tf)3/4"
k (detailing)1 15/16"
Workable gage (g)7 1/2"

Section properties

Weight135 lb/ft
Area (A)39.9 in²
Ix2200 in⁴
Sx251 in³
Zx281 in³
rx7.43 in
Iy706 in⁴
Sy79.3 in³
Zy122 in³
ry4.21 in
J9.12 in⁴

Other HP18 sizes

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

HP18×157HP18×181HP18×204

Similar weight H-piles

Comparable 135 lb/ft sections in other H-pile sizes.

HP16×141141 lb/ft · Sx 234 in³HP16×121121 lb/ft · Sx 201 in³HP14×117117 lb/ft · Sx 172 in³HP16×162162 lb/ft · Sx 269 in³HP14×102102 lb/ft · Sx 150 in³HP16×101101 lb/ft · Sx 168 in³HP14×8989 lb/ft · Sx 131 in³HP12×8989 lb/ft · Sx 112 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 HP18×135 cut, formed, or fabricated? Huntington Steel & Supply Co.

Browse more: H-piles · Steel Beam Size Chart

Interactive drawing