I have piping going thru roof of a building and exposed to wind. My roof elevation is 90'-0". In wind profile screen I am putting ground elevation at 90'-0". (it is done not to expose the pipe to wind below 90'-0"). However, my

Question

I have piping going thru roof of a building and exposed to wind. My roof elevation is 90'-0". In wind profile screen I am putting ground elevation at 90'-0". (it is done not to expose the pipe to wind below 90'-0"). However, my question is whether AutoPIPE correctly calculates the wind pressure as it is dependent on elevation. The concern is if my piping is at 100' elevation and since I put ground elevation as 90', does it take 10' as the elevation for calculating the wind pressure?

Bilal Shah · Accepted Answer

Yes, changing the "Ground elevation for wind" setting would make AutoPIPE consider height of any point in the model as "Height - Ground Elevation for wind" when calculating wind pressure values. As mentioned in the help: 
 "This elevation will be treated as the datum, making it the same as Height=0 in the wind load profile." 
 Using the Apply Wind checkbox may be a better option in cases where you would not want to change the actual ground elevation wrt model coordinates.

I have piping going thru roof of a building and exposed to wind. My roof elevation is 90'-0". In wind profile screen I am putting ground elevation at 90'-0". (it is done not to expose the pipe to wind below 90'-0"). However, my

Top Replies