Rectangular and square HSS

HSS16X8X5/8 HSS406.4X203.2X15.9

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 = 0.581tdes = 0.581
Cross-section, to scaledimensions in inches

Dimensions

Depthd
16in
Widthb
8in
Nominal thicknesstnom
0.625in
Design thicknesstdes
0.581in

Mass and area

Mass per lengthm
93.34lb/ft
Cross-sectional areaA
25.7in²

Strong axis x–x

Moment of inertiaIx
815in⁴
Elastic section modulusSx
102in³
Plastic section modulusZx
129in³
Radius of gyrationrx
5.64in

Weak axis y–y

Moment of inertiaIy
274in⁴
Elastic section modulusSy
68.6in³
Plastic section modulusZy
79.2in³
Radius of gyrationry
3.27in

Torsion and stability

Torsional constantJ
681in⁴
Torsional modulusC
132in³

Slenderness ratios

Wall slendernessb/t
10.8
Wall slendernessh/t
24.5

Equivalents in other standards