Steel I Beam Area Moment Of Inertia Formula

Equation for calculate steel i beam area moment of inertia is,

Ixx = H³b / 12 + 2[h³B/12 + hB(H + h)² / 4]
Iyy = b³H / 12 + 2(B³h / 12)
j = Ixx + Iyy

Where,
Ixx = Area Moment of Inertia(X-Axis)
Iyy = Area Moment of Intertia(Y-Axis)
j = Polar Moment of Inertia
H = Flange-flange Inner Face Height
b = Web Thickness
h = Flange Thickness
B = Width