Rectangular and square HSS

HSS22X18X3/4 HSS558.8X457.2X19.0

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 = 0.698tdes = 0.698
Cross-section, to scaledimensions in inches

Dimensions

Depthd
22in
Widthb
18in
Nominal thicknesstnom
0.75in
Design thicknesstdes
0.698in

Mass and area

Mass per lengthm
191.6lb/ft
Cross-sectional areaA
52.6in²

Strong axis x–x

Moment of inertiaIx
3,720in⁴
Elastic section modulusSx
338in³
Plastic section modulusZx
402in³
Radius of gyrationrx
8.41in

Weak axis y–y

Moment of inertiaIy
2,730in⁴
Elastic section modulusSy
304in³
Plastic section modulusZy
351in³
Radius of gyrationry
7.21in

Torsion and stability

Torsional constantJ
5,000in⁴
Torsional modulusC
513in³

Slenderness ratios

Wall slendernessb/t
22.8
Wall slendernessh/t
28.5

Equivalents in other standards