Rectangular and square HSS

HSS16X8X5/16 HSS406.4X203.2X7.9

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 = 16tdes = 0.291tdes = 0.291
Cross-section, to scaledimensions in inches

Dimensions

Depthd
16in
Widthb
8in
Nominal thicknesstnom
0.3125in
Design thicknesstdes
0.291in

Mass and area

Mass per lengthm
48.86lb/ft
Cross-sectional areaA
13.4in²

Strong axis x–x

Moment of inertiaIx
451in⁴
Elastic section modulusSx
56.4in³
Plastic section modulusZx
69.4in³
Radius of gyrationrx
5.8in

Weak axis y–y

Moment of inertiaIy
155in⁴
Elastic section modulusSy
38.7in³
Plastic section modulusZy
43in³
Radius of gyrationry
3.4in

Torsion and stability

Torsional constantJ
369in⁴
Torsional modulusC
70.4in³

Slenderness ratios

Wall slendernessb/t
24.5
Wall slendernessh/t
52

Equivalents in other standards