Rectangular and square HSS

HSS20X16X3/4 HSS508X406.4X19.0

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 = 16d = 20tdes = 0.698tdes = 0.698
Cross-section, to scaledimensions in inches

Dimensions

Depthd
20in
Widthb
16in
Nominal thicknesstnom
0.75in
Design thicknesstdes
0.698in

Mass and area

Mass per lengthm
171.2lb/ft
Cross-sectional areaA
47.1in²

Strong axis x–x

Moment of inertiaIx
2,710in⁴
Elastic section modulusSx
271in³
Plastic section modulusZx
324in³
Radius of gyrationrx
7.59in

Weak axis y–y

Moment of inertiaIy
1,920in⁴
Elastic section modulusSy
240in³
Plastic section modulusZy
278in³
Radius of gyrationry
6.39in

Torsion and stability

Torsional constantJ
3,590in⁴
Torsional modulusC
411in³

Slenderness ratios

Wall slendernessb/t
19.9
Wall slendernessh/t
25.7

Equivalents in other standards