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Geometrical Properties of Circular Pipe


circular-pipe.png

Dimensions

d = m, t = m

d1 = d – 2·t m

Area

A = π·(d2d12)/4 m2

Centroid

zc = yc = d/2 m

Perimeter

P = π·d m

Second moments of area

Iz = Iy = π·(d4d14)/64 m4

Polar moment of area

Ix = 2·Iy m4

Torsional constant

It = π·(d4d14)/32 m4

Torsional section modulus

Wt = 2·It/d m3

Radii of gyration

rz = ry = √Iy/A m

rx = √Ix/A m


Substitute