Rectangular and square HSS

HSS16X12X5/16 HSS406.4X304.8X7.9

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 = 12d = 16tdes = 0.291tdes = 0.291
Cross-section, to scaledimensions in inches

Dimensions

Depthd
16in
Widthb
12in
Nominal thicknesstnom
0.3125in
Design thicknesstdes
0.291in

Mass and area

Mass per lengthm
57.36lb/ft
Cross-sectional areaA
15.7in²

Strong axis x–x

Moment of inertiaIx
595in⁴
Elastic section modulusSx
74.4in³
Plastic section modulusZx
87.7in³
Radius of gyrationrx
6.15in

Weak axis y–y

Moment of inertiaIy
384in⁴
Elastic section modulusSy
64in³
Plastic section modulusZy
72.2in³
Radius of gyrationry
4.94in

Torsion and stability

Torsional constantJ
727in⁴
Torsional modulusC
107in³

Slenderness ratios

Wall slendernessb/t
38.2
Wall slendernessh/t
52

Equivalents in other standards