HSS9×9×5/16 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.

HSS9×9×5/16 is a square tube 9 in. by 9 in. with a 5/16 in. nominal wall.

At 36.1 lb per foot it is one of the 7 HSS9×9 sizes, which run from 14.96 to 67.82 lb/ft.

For strong-axis bending its section modulus is Sx = 27.6 in³ and its moment of inertia Ix = 124 in⁴, with a plastic modulus Zx = 32.1 in³.

Detailing dimensions

Depth (Ht)9"
Width (B)9"
Nominal wall (t)5/16"

Section properties

Weight36.1 lb/ft
Area (A)9.92 in²
Ix124 in⁴
Sx27.6 in³
Zx32.1 in³
rx3.54 in
Iy124 in⁴
Sy27.6 in³
Zy32.1 in³
ry3.54 in
J196 in⁴

Other HSS9×9 sizes

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

HSS9×9×1/8HSS9×9×3/16HSS9×9×1/4HSS9×9×3/8HSS9×9×1/2HSS9×9×5/8

All HSS9×9 sizes and dimensions →

Similar weight HSS shapes

Comparable 36.1 lb/ft sections in other HSS tube sizes.

HSS14×4×5/1636.1 lb/ft · Sx 30.9 in³HSS12×6×5/1636.1 lb/ft · Sx 30.7 in³HSS10×8×5/1636.1 lb/ft · Sx 29 in³HSS16×6×1/436.03 lb/ft · Sx 38.8 in³HSS14×8×1/436.03 lb/ft · Sx 38 in³HSS12×10×1/436.03 lb/ft · Sx 36 in³HSS14.000×0.25036.75 lb/ft · Sx 34.1 in³HSS9×3×1/235.24 lb/ft · Sx 18 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 HSS9×9×5/16 cut, formed, or fabricated? Huntington Steel & Supply Co.

Browse more: HSS tube · Steel Beam Size Chart

Interactive drawing