HSS20×12×1 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.

HSS20×12×1 is a rectangular tube 20 in. by 12 in. with a 1 in. nominal wall.

At 195.4 lb per foot it is the heaviest of the 7 HSS20×12 sizes, which run from 65.87 to 195.4 lb/ft.

For strong-axis bending its section modulus is Sx = 274 in³ and its moment of inertia Ix = 2740 in⁴, with a plastic modulus Zx = 344 in³.

Detailing dimensions

Depth (Ht)20"
Width (B)12"
Nominal wall (t)1"

Section properties

Weight195.4 lb/ft
Area (A)53.8 in²
Ix2740 in⁴
Sx274 in³
Zx344 in³
rx7.14 in
Iy1230 in⁴
Sy205 in³
Zy241 in³
ry4.78 in
J2820 in⁴

Other HSS20×12 sizes

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

HSS20×12×5/16HSS20×12×3/8HSS20×12×1/2HSS20×12×5/8HSS20×12×3/4HSS20×12×7/8

All HSS20×12 sizes and dimensions →

Similar weight HSS shapes

Comparable 195.4 lb/ft sections in other HSS tube sizes.

HSS16×16×1195.4 lb/ft · Sx 249 in³HSS24×12×7/8197.24 lb/ft · Sx 326 in³HSS18×18×7/8197.24 lb/ft · Sx 292 in³HSS30×10×3/4191.58 lb/ft · Sx 363 in³HSS24×16×3/4191.58 lb/ft · Sx 350 in³HSS22×18×3/4191.58 lb/ft · Sx 338 in³HSS20×20×3/4191.58 lb/ft · Sx 323 in³HSS24×18×3/4201.79 lb/ft · Sx 382 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 HSS20×12×1 cut, formed, or fabricated? Huntington Steel & Supply Co.

Browse more: HSS tube · Steel Beam Size Chart

Interactive drawing