Geometrical Properties of Tee Section

Dimensions

h =   m, t_w =   m

b_f =   m, t_f =   m

Area

A_w = h·t_w m²

A_f = (b_f – t_w)·t_f m²

A = A_w + A_f m²

Centroid

y_c = b_f2 m

S_y = A_w·h2 + A_f·(h – t_f2) m³

z_c = S_yA m

Perimeter

P = 2·(h + b_f) m

Second moments of area

I_{y_w} = A_w·(h²12 + (z_c – h2)²) m⁴

I_{y_f} = A_f·(t_f²12 + (h – z_c – t_f2)²) m⁴

I_y = I_{y_w} + I_{y_f} m⁴

I_z = t_f·b_f³ + (h – t_f)·t_w³12 m⁴

Polar moment of area

I_x = I_y + I_z m⁴

Radii of gyration

r_y =  I_yA m

r_z =  I_zA m

r_x =  I_xA m