Document Information

Document Type: FAQ

Product(s): LEAP RCPIER/Substructure

Version(s): All

Original Author: Bentley Technical Support Group - VM

QUESTION: How to reduce the analysis time ? 

ANSWER:

These are some of the suggestions to reduce the number of Load combinations and eventually Analysis and Design time.

1) Program generally generates the wind load at every 15 degrees , i would recommend the users to delete the wind loads generated at 15 ,45 and 75 degrees as it is not required to generate at every 15 degrees and even at every 30 degrees the program will generate fairly good results. This will help in reducing number of load combinations and eventually Analysis time.

2) If possible try to select only the critical vehicles which will generate worst reactions and this will help the user to reduce the number of LL cases. This will help in reducing number of load combinations and eventually Analysis time.

3) Thirdly user can go to combination and click on parameters and select Dependent load cases instead of cross combination . If incase dependent load case option does not work you can manually go to dependency table separate the load cases or the dependency by selecting None. Cross combination generally generates a lot of load combination which will increase the analysis time.

4) Use only the load groups which are required for that particular project.

5)  Do not generate Braking force load cases along with the Live loads. Only one braking force is enough for analysis purpose.

6) Close all the other programs while running this particular file .