Applies To
Product(s):	AutoPIPE
Version(s):	ALL;
Environment:	N/A
Area:	Modeling
Original Author:	Bentley Technical Support Group
Date Logged & Current Version	Dec. 2016 10.01.00.09

Problem:

Can all dynamic analysis (ex. Response Spectrum, time history, Harmonic, etc..) be performed on underwater piping correctly while using AutoPIPE?

Solution:

Assuming the pipe is correctly supported by soil properties, select a range of piping where concrete mattress will be laid across, select Insert> Distributed load..> suggest "Load case to combine with " = GR, enter correct value of weight in vertical down direction, and press OK button to apply.

Or, add additional weight using insulation thickness and density

Note: To model stiffness of concrete mattresses restraining the pipe. Two approaches are:

A. Insert soil over this area with equivalent stiffness to match rigidity of mattresses
B. Insert V-stops with high friction e.g. much greater than 1.0

02. How to model a Concrete Mattress for subsea / underwater piping using AutoPIPE?

Problem:

Solution:

See Also