HSS20×8×3/4 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.

HSS20×8×3/4 is a rectangular tube 20 in. by 8 in. with a 3/4 in. nominal wall.

At 130.33 lb per foot it is one 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 = 167 in³ and its moment of inertia Ix = 1670 in⁴, with a plastic modulus Zx = 216 in³.

Detailing dimensions

Depth (Ht)20"
Width (B)8"
Nominal wall (t)3/4"

Section properties

Weight130.33 lb/ft
Area (A)35.9 in²
Ix1670 in⁴
Sx167 in³
Zx216 in³
rx6.82 in
Iy388 in⁴
Sy97.1 in³
Zy112 in³
ry3.29 in
J1060 in⁴

Other HSS20×8 sizes

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

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

All HSS20×8 sizes and dimensions →

Similar weight HSS shapes

Comparable 130.33 lb/ft sections in other HSS tube sizes.

HSS16×12×3/4130.33 lb/ft · Sx 159 in³HSS14×14×3/4130.33 lb/ft · Sx 149 in³HSS30×10×1/2130.52 lb/ft · Sx 254 in³HSS24×16×1/2130.52 lb/ft · Sx 244 in³HSS22×18×1/2130.52 lb/ft · Sx 236 in³HSS20×20×1/2130.52 lb/ft · Sx 226 in³HSS20.000×0.625129.45 lb/ft · Sx 167 in³HSS22×10×5/8127.37 lb/ft · Sx 191 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 HSS20×8×3/4 cut, formed, or fabricated? Huntington Steel & Supply Co.

Browse more: HSS tube · Steel Beam Size Chart

Interactive drawing