Rectangular and square HSS

HSS8X8X5/16 HSS203.2X203.2X7.9

Standard: AISC Shapes Database v16.0Source: AISC (aisc.org) — Shapes Database v16.0 (Excel file)
Values published by AISC, in US customary (original) and SI units.
xyb = 8d = 8tdes = 0.291tdes = 0.291
Cross-section, to scaledimensions in inches

Dimensions

Depthd
8in
Widthb
8in
Nominal thicknesstnom
0.3125in
Design thicknesstdes
0.291in

Mass and area

Mass per lengthm
31.84lb/ft
Cross-sectional areaA
8.76in²

Strong axis x–x

Moment of inertiaIx
85.6in⁴
Elastic section modulusSx
21.4in³
Plastic section modulusZx
25.1in³
Radius of gyrationrx
3.13in

Weak axis y–y

Moment of inertiaIy
85.6in⁴
Elastic section modulusSy
21.4in³
Plastic section modulusZy
25.1in³
Radius of gyrationry
3.13in

Torsion and stability

Torsional constantJ
136in⁴
Torsional modulusC
34.5in³

Slenderness ratios

Wall slendernessb/t
24.5
Wall slendernessh/t
24.5

Equivalents in other standards