For proper Wind Loads:
Do I need to revise Global cordinate of Vertical axis from actual elevation to zero at ground level?

Wind profile elevation starts from zero. So you should specify the real elevation of pipe from the ground. Sometimes global elevations are measured from sea level or a benchmark, in different projects.

Thank you, Farhad, for taking the time to answer my question.

Its starts from zero. but u can entire like this also in caesar

here below example 0 to 3 mtrs same wind pressure.

Elevation Wind Pressure
m kPa
3 2.58
5 2.58
10 3.11
15 3.43
20 3.63
30 3.90
40 4.19
50 4.33
75 4.63
100 4.78