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Math
 
Square Channel

Cx Cy Area
Moment of Inertia
about the xc axis
Ixc		 Moment of Inertia
about the yc axis
Iyc		 Polar Moment of Inertia
about the zc axis
Jzc
= Ixc + Iyc
Radius of Gyration
about the xc axis>kxc		 Radius of Gyration
about the yc axis
kyc		 Radius of Gyration
about the zc axis
rzc
rzc2 = kxc2+kyc2