Rectangular and square HSS

HSS20X20X5/16 HSS508X508X7.9

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 = 20d = 20tdes = 0.291tdes = 0.291
Cross-section, to scaledimensions in inches

Dimensions

Depthd
20in
Widthb
20in
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
1,460in⁴
Elastic section modulusSx
146in³
Plastic section modulusZx
167in³
Radius of gyrationrx
8.03in

Weak axis y–y

Moment of inertiaIy
1,460in⁴
Elastic section modulusSy
146in³
Plastic section modulusZy
167in³
Radius of gyrationry
8.03in

Torsion and stability

Torsional constantJ
2,250in⁴
Torsional modulusC
226in³

Slenderness ratios

Wall slendernessb/t
65.7
Wall slendernessh/t
65.7

Equivalents in other standards