Rectangular and square HSS

HSS12X3X5/16 HSS304.8X76.2X7.9

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 = 3d = 12tdes = 0.291tdes = 0.291
Cross-section, to scaledimensions in inches

Dimensions

Depthd
12in
Widthb
3in
Nominal thicknesstnom
0.3125in
Design thicknesstdes
0.291in

Mass and area

Mass per lengthm
29.72lb/ft
Cross-sectional areaA
8.17in²

Strong axis x–x

Moment of inertiaIx
124in⁴
Elastic section modulusSx
20.7in³
Plastic section modulusZx
27.9in³
Radius of gyrationrx
3.9in

Weak axis y–y

Moment of inertiaIy
13.1in⁴
Elastic section modulusSy
8.73in³
Plastic section modulusZy
10in³
Radius of gyrationry
1.27in

Torsion and stability

Torsional constantJ
41.3in⁴
Torsional modulusC
18.4in³

Slenderness ratios

Wall slendernessb/t
7.31
Wall slendernessh/t
38.2

Equivalents in other standards