I have a section property of cold formed section and I need to input this parameter in STAAD Pro to model the system accurately, in the photo the data available i need to know how to input it.
If the purpose is to model these sections and carry out an analysis on the model to find out the displacement, member forces etc. you may model these as general sections. The following wiki tells you where to go to do that. Although this is not specific to coldformed sections, but the same process would hold good
https://communities.bentley.com/products/ram-staad/w/structural_analysis_and_design__wiki/17821/how-can-i-define-a-steel-section-encased-in-concrete-or-a-steel-section-with-a-concrete-core-in-staad-pro
If design of these coldformed sections is also something that you are looking for, then it may be worth noting that STAAD.Pro can perform design of coldformed sections as per certain design codes like the AISI ( American ), IS 801 ( Indian), S136 ( Canadian ) etc. To get a design done, you would have to add these coldformed sections to the corresponding coldformed section database in STAAD.Pro. The process is explained at the wiki below
https://communities.bentley.com/products/ram-staad/w/structural_analysis_and_design__wiki/29329/modifying-the-section-database
Thanks Sye for your reply,
I am trying to model a building which consists of beams and columns made from cold formed sections, but the sections are not standard, so I used a small program to calculate every section property, now am trying to model the whole system in StAAD Pro, so I need to make sure that all the properties are defined correctly, so the model behave with realistic response, so if it is possible could you tell me a reference where it says that “Ax” value stand for ***** and “ ZX” is For example the major section modules,
and is it possible to build a section by drawing it inside the program and use its properties in modeling?
And thank you for speed reply
By default, the program calculates buckling factor for all primary/REPEAT LOAD cases but you can insert a PERFORM ANALYSIS & CHANGE after the cases for which you do not need to carry out buckling analysis. After the CHANGE, specify the loads for which BUCKLING ANALYSIS us required. A sample piece of code is provided below.
LOAD 1 ELEMENT LOAD41 TO 72 PR -1LOAD 2 JOINT LOAD11 33 FZ -2022 FZ -100...LOAD 12 REPEAT LOAD1 1.2 2 1.2 PERFORM ANALYSISCHANGELOAD 13 REPEAT LOAD1 1.0 2 1.0 LOAD 14 REPEAT LOAD1 1.2 2 1.4 PERFORM BUCKLING ANALYSISCHANGE
...
In the above example the BUCKLING ANALYSIS would only be carried out for cases 13 and 14.
A request : For questions which are not related to a previous post, please create a new post instead of clubbing the question to the older one. This helps in better management of posts and would make life easier for people who will be referring to these posts in the future.
Thought this may be a good topic for a wiki
https://communities.bentley.com/products/ram-staad/w/structural_analysis_and_design__wiki/36763/how-can-i-restrict-staad-pro-to-carry-out-buckling-analysis-for-certain-load-cases-only
Answer Verified By: Abdalla Sharf El-Dien
When you add a section to a particular database, the naming of the new section has to match the nomenclature being used for the sections already existing in that table. You cannot use any name. So if you trying to add sections to the Indian Coldformed Section database you need to check how the other sections are named and then name your section accordingly. The numbers can change but not the alphabets. Also using space is not permitted in the section names and don't use long names.
about the buckling analysis
I as sorry for mixing more that subject in the same post but the example is not clear enough for me. would you please clarify
it in a detailed steps in the wiki post?
and about adding new section to the tables
it doesn't save the section Iy value
5187.Staad analysis.rar
For buckling analysis : You need to set up the command file following the sample input that I had provided. You need to use the editor ( accessible from the menu option Edit > Edit Input Command File ) to type in the PERFORM ANALYSIS and PERFORM BUCLKING ANALYSIS commands at appropriate locations in the input file.
Regarding adding the section: Once you enter the value for Iy in the database, press the Enter key on the keyboard and then click on the Save. Close the table and open it back up to check that the value is accepted. It should get accepted.
It worked, I guess the problem was that don’t press enter, thanks.