HSS20×8×1/2 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.

HSS20×8×1/2 is a rectangular tube 20 in. by 8 in. with a 1/2 in. nominal wall.

At 89.68 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 = 119 in³ and its moment of inertia Ix = 1190 in⁴, with a plastic modulus Zx = 152 in³.

Detailing dimensions

Depth (Ht)20"
Width (B)8"
Nominal wall (t)1/2"

Section properties

Weight89.68 lb/ft
Area (A)24.6 in²
Ix1190 in⁴
Sx119 in³
Zx152 in³
rx6.96 in
Iy283 in⁴
Sy70.8 in³
Zy79.5 in³
ry3.39 in
J757 in⁴

Other HSS20×8 sizes

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

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

All HSS20×8 sizes and dimensions →

Similar weight HSS shapes

Comparable 89.68 lb/ft sections in other HSS tube sizes.

HSS18×10×1/289.68 lb/ft · Sx 117 in³HSS16×12×1/289.68 lb/ft · Sx 113 in³HSS14×14×1/289.68 lb/ft · Sx 106 in³HSS10×10×3/489.5 lb/ft · Sx 69.4 in³HSS14.000×0.62589.36 lb/ft · Sx 78.9 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 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 HSS20×8×1/2 cut, formed, or fabricated? Huntington Steel & Supply Co.

Browse more: HSS tube · Steel Beam Size Chart

Interactive drawing