HSS20×16×3/4 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.

HSS20×16×3/4 is a rectangular tube 20 in. by 16 in. with a 3/4 in. nominal wall.

At 171.16 lb per foot it is the heaviest of the 6 HSS20×16 sizes, which run from 59.85 to 171.16 lb/ft.

For strong-axis bending its section modulus is Sx = 271 in³ and its moment of inertia Ix = 2710 in⁴, with a plastic modulus Zx = 324 in³.

Detailing dimensions

Depth (Ht)20"
Width (B)16"
Nominal wall (t)3/4"

Section properties

Weight171.16 lb/ft
Area (A)47.1 in²
Ix2710 in⁴
Sx271 in³
Zx324 in³
rx7.59 in
Iy1920 in⁴
Sy240 in³
Zy278 in³
ry6.39 in
J3590 in⁴

Other HSS20×16 sizes

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

HSS20×16×1/4HSS20×16×5/16HSS20×16×3/8HSS20×16×1/2HSS20×16×5/8

All HSS20×16 sizes and dimensions →

Similar weight HSS shapes

Comparable 171.16 lb/ft sections in other HSS tube sizes.

HSS24×12×3/4171.16 lb/ft · Sx 287 in³HSS22×14×3/4171.16 lb/ft · Sx 281 in³HSS18×18×3/4171.16 lb/ft · Sx 258 in³HSS22.000×0.750170.37 lb/ft · Sx 241 in³HSS24×18×5/8169.91 lb/ft · Sx 325 in³HSS22×20×5/8169.91 lb/ft · Sx 313 in³HSS26.000×0.625169.54 lb/ft · Sx 289 in³HSS20×12×7/8173.43 lb/ft · Sx 248 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 HSS20×16×3/4 cut, formed, or fabricated? Huntington Steel & Supply Co.

Browse more: HSS tube · Steel Beam Size Chart

Interactive drawing