Do = 1.792 ft
Di = 1.625 ft
Esteel= 4.32 * 109 lb / ft2
Iyy = π/64*(Do4-Di4) = 0.164 ft4
EIyy = Esteel * Iyy = 7.065 * 108 lb.ft2
EIzz = EIyy =7.065 * 108 lb.ft2
Gsteel= 1.73 * 109 lb / ft2
J = 2 * Iyy =0.327 ft4
GJ = 5.652 * 108 lb.ft2/rad
A = π/4*(Do2-Di2) = 0.447 ft2
EA =100 lb (nominal)
M = (ρsteel * A) * 110% (couplings) = 7.493 slugs /ft
Dd = 1.792 ft
V = π/4*(Do2) = 2.521 ft2
Db = 1.792 ft