Rectangular and square HSS

HSS20X20X3/4 HSS508X508X19.0

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 = 20d = 20tdes = 0.698tdes = 0.698
Cross-section, to scaledimensions in inches

Dimensions

Depthd
20in
Widthb
20in
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
3,230in⁴
Elastic section modulusSx
323in³
Plastic section modulusZx
378in³
Radius of gyrationrx
7.84in

Weak axis y–y

Moment of inertiaIy
3,230in⁴
Elastic section modulusSy
323in³
Plastic section modulusZy
378in³
Radius of gyrationry
7.84in

Torsion and stability

Torsional constantJ
5,110in⁴
Torsional modulusC
519in³

Slenderness ratios

Wall slendernessb/t
25.6
Wall slendernessh/t
25.6

Equivalents in other standards