Rectangular and square HSS

HSS20X20X7/8 HSS508X508X22.2

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 = 0.814tdes = 0.814
Cross-section, to scaledimensions in inches

Dimensions

Depthd
20in
Widthb
20in
Nominal thicknesstnom
0.875in
Design thicknesstdes
0.814in

Mass and area

Mass per lengthm
221.1lb/ft
Cross-sectional areaA
60.8in²

Strong axis x–x

Moment of inertiaIx
3,670in⁴
Elastic section modulusSx
367in³
Plastic section modulusZx
433in³
Radius of gyrationrx
7.77in

Weak axis y–y

Moment of inertiaIy
3,670in⁴
Elastic section modulusSy
367in³
Plastic section modulusZy
433in³
Radius of gyrationry
7.77in

Torsion and stability

Torsional constantJ
5,870in⁴
Torsional modulusC
597in³

Slenderness ratios

Wall slendernessb/t
21.6
Wall slendernessh/t
21.6

Equivalents in other standards