Rectangular and square HSS

HSS22X18X5/16 HSS558.8X457.2X7.9

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 = 18d = 22tdes = 0.291tdes = 0.291
Cross-section, to scaledimensions in inches

Dimensions

Depthd
22in
Widthb
18in
Nominal thicknesstnom
0.3125in
Design thicknesstdes
0.291in

Mass and area

Mass per lengthm
82.88lb/ft
Cross-sectional areaA
22.7in²

Strong axis x–x

Moment of inertiaIx
1,680in⁴
Elastic section modulusSx
153in³
Plastic section modulusZx
178in³
Radius of gyrationrx
8.61in

Weak axis y–y

Moment of inertiaIy
1,240in⁴
Elastic section modulusSy
138in³
Plastic section modulusZy
156in³
Radius of gyrationry
7.4in

Torsion and stability

Torsional constantJ
2,200in⁴
Torsional modulusC
224in³

Slenderness ratios

Wall slendernessb/t
58.9
Wall slendernessh/t
72.6

Equivalents in other standards