HSS20×8×1 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.

HSS20×8×1 is a rectangular tube 20 in. by 8 in. with a 1 in. nominal wall.

At 168.18 lb per foot it is the heaviest of the 7 HSS20×8 sizes, which run from 57.36 to 168.18 lb/ft.

For strong-axis bending its section modulus is Sx = 206 in³ and its moment of inertia Ix = 2060 in⁴, with a plastic modulus Zx = 273 in³.

Detailing dimensions

Depth (Ht)20"
Width (B)8"
Nominal wall (t)1"

Section properties

Weight168.18 lb/ft
Area (A)46.4 in²
Ix2060 in⁴
Sx206 in³
Zx273 in³
rx6.67 in
Iy472 in⁴
Sy118 in³
Zy141 in³
ry3.19 in
J1320 in⁴

Other HSS20×8 sizes

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

HSS20×8×5/16HSS20×8×3/8HSS20×8×1/2HSS20×8×5/8HSS20×8×3/4HSS20×8×7/8

All HSS20×8 sizes and dimensions →

Similar weight HSS shapes

Comparable 168.18 lb/ft sections in other HSS tube sizes.

HSS16×12×1168.18 lb/ft · Sx 196 in³HSS14×14×1168.18 lb/ft · Sx 184 in³HSS26.000×0.625169.54 lb/ft · Sx 289 in³HSS24×18×5/8169.91 lb/ft · Sx 325 in³HSS22×20×5/8169.91 lb/ft · Sx 313 in³HSS22.000×0.750170.37 lb/ft · Sx 241 in³HSS24×12×3/4171.16 lb/ft · Sx 287 in³HSS22×14×3/4171.16 lb/ft · Sx 281 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 HSS20×8×1 cut, formed, or fabricated? Huntington Steel & Supply Co.

Browse more: HSS tube · Steel Beam Size Chart

Interactive drawing