Rectangular and square HSS

HSS20X8X7/8 HSS508X203.2X22.2

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 = 8d = 20tdes = 0.814tdes = 0.814
Cross-section, to scaledimensions in inches

Dimensions

Depthd
20in
Widthb
8in
Nominal thicknesstnom
0.875in
Design thicknesstdes
0.814in

Mass and area

Mass per lengthm
149.6lb/ft
Cross-sectional areaA
41.2in²

Strong axis x–x

Moment of inertiaIx
1,880in⁴
Elastic section modulusSx
188in³
Plastic section modulusZx
246in³
Radius of gyrationrx
6.74in

Weak axis y–y

Moment of inertiaIy
432in⁴
Elastic section modulusSy
108in³
Plastic section modulusZy
127in³
Radius of gyrationry
3.24in

Torsion and stability

Torsional constantJ
1,200in⁴
Torsional modulusC
222in³

Slenderness ratios

Wall slendernessb/t
6.83
Wall slendernessh/t
21.6

Equivalents in other standards