HSS24×18×5/16 square/rectangular HSS tube

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.

HSS24×18×5/16 is a rectangular tube 24 in. by 18 in. with a 5/16 in. nominal wall.

At 87.14 lb per foot it is the lightest of the 5 HSS24×18 sizes, which run from 87.14 to 201.79 lb/ft.

For strong-axis bending its section modulus is Sx = 172 in³ and its moment of inertia Ix = 2060 in⁴, with a plastic modulus Zx = 201 in³.

Detailing dimensions

Depth (Ht)24"
Width (B)18"
Nominal wall (t)5/16"

Section properties

Weight87.14 lb/ft
Area (A)23.9 in²
Ix2060 in⁴
Sx172 in³
Zx201 in³
rx9.3 in
Iy1330 in⁴
Sy148 in³
Zy166 in³
ry7.47 in
J2500 in⁴

Other HSS24×18 sizes

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

HSS24×18×3/8HSS24×18×1/2HSS24×18×5/8HSS24×18×3/4

All HSS24×18 sizes and dimensions →

Similar weight HSS shapes

Comparable 87.14 lb/ft sections in other HSS tube sizes.

HSS22×20×5/1687.14 lb/ft · Sx 166 in³HSS22.000×0.37586.69 lb/ft · Sx 126 in³HSS26.000×0.31385.81 lb/ft · Sx 149 in³HSS24×12×3/888.73 lb/ft · Sx 155 in³HSS22×14×3/888.73 lb/ft · Sx 152 in³HSS20×16×3/888.73 lb/ft · Sx 147 in³HSS18×18×3/888.73 lb/ft · Sx 139 in³HSS13.375×0.62585.19 lb/ft · Sx 71.6 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 HSS24×18×5/16 cut, formed, or fabricated? Huntington Steel & Supply Co.

Browse more: HSS tube · Steel Beam Size Chart

Interactive drawing