Dec 2014, AutoPIPE V8i 09.06.01.10
How to model vertical Air Shafts - large diameter vertical underground piping up to a half mile long, going straight down with external ring braces every 10 to 15 feet ?
Consider the following modeling approach:
1. Model vertical piping with the correct pipe properties as needed.. Confirm code requirements for D/t are not exceeded (typically D/t = 100).
2. Apply soil properties as needed to the vertical piping (may needed more than 1 soil property).
3. Account for the ring braces with different pipe properties.
Note: AutoPIPE performs analysis based on piping code requirements. Some parameters (Pipe OD to wall thickness ratio) in this modeling maybe outside of the selected piping code limitation and may provide an incorrect analysis. Be aware of the selected piping code and program limitation for this type of modeling.