AA standard channels

C 3 x 1.14

Standard: Aluminum AssociationSource: Aluminum Association standard shape dimensions (as listed by Engineers Edge) — calculated properties
Mass calculated at 2700 kg/m³. Flange toe radius ignored (area difference < 1.5%).
xybf = 1.5d = 3tf = 0.2tf = 0.2tw = 0.13tw = 0.13
Cross-section, to scaledimensions in inches

Dimensions

Depthd
3in
Flange widthbf
1.5in
Web thicknesstw
0.13in
Flange thicknesstf
0.2in
Root radiusr
0.25in

Mass and area

Mass per lengthm
1.129lb/ft
Cross-sectional areaA
0.9648in²
Published area (standard)A pub.
0.965in²
Outside perimeterP
11.53in

Strong axis x–x

Moment of inertiaIx
1.41in⁴
Elastic section modulusSx
0.94in³
Plastic section modulusZx
1.093in³
Radius of gyrationrx
1.209in

Weak axis y–y

Moment of inertiaIy
0.2171in⁴
Elastic section modulusSy
0.2159in³
Plastic section modulusZy
0.3885in³
Radius of gyrationry
0.4744in

Torsion and stability

Torsional constantJ
0.0109in⁴

Centers

Centroidx̄
0.4943in

Equivalents in other standards