Hello everybody!
I am simulating an old structure which is constructed with composed sections (UPN180 FR SP 0.38 for same colums and UPN120 FR SP 0.00 for diagonal trusses). But the Staad Output shows the next warning message for this composed sections: "**WARNING-THIS VERSION DOES NOT DESIGN FACE-TO-FACE CHANNEL SECTIONS (MEMBER 12)."
My Staad version is STAAD.Pro CONNECT Edition - Version 21.03.00.146.
I have the issue that the STAAD do not aply the check code (EN 1993-1-4:2005) to this sections. Is there any way to apply the check code to this sections?
I tried to verify the max stress in the "Beam combined stresses summary" but is too much big because I have 96 load case combinations and the report do not show a summary for each beam, it shows 96 lines for each beam (I have about 9000 beams in my STAAD model). Is there any way to get a summary of beam stresses that really is a summary?
Next you have the std file:
018-47-EA C03_00.STD
Many thanks for your help in advance!
Fernando Gago
Yes double channels face to face cannot be designed as of now as per the EN 1993 code. One option for you would be to design only these members using a US code like AISC UNIFIED 2010.
You can quickly find out the max/min beam stresses from amongst a set of members ( or from amongst all members) using the procedure outlined in the wiki below
https://communities.bentley.com/products/ram-staad/w/structural_analysis_and_design__wiki/37082/finding-out-the-max-forces-displacements-support-reactions-stresses-for-a-group-of-entities
Hello Sye!
Many thanks for your tips!
The problem I have with the US code is that this work is in Spain and I have to justify the compliance of the structure with one of the codes legally accepted in Spain (EN-1993, CTE DB-SE-A or EAE-2011) and the only avaliable in STAAD is the EN-1993.
Regarding the report of max / min beam stress , following the wiki you suggest me I found that the report continues to be too much big. It shows the max/min beam stress for each L/C in a lot of sections of every beam. Is there any way that the report only shows one max/min for each beam?
Thanks again for your help!
Fernando: You may then define the section using a user table General type section.
Regarding the min/max report, you need to choose the option to sort the Beam Stress report based on the Combination Stress. If you sort from high to low, the first row would give you the highest ( positive) value and the last row would give you the lowest (negative ) value for the combined stress.
Thanks Sye!!!!
I had already done what you advise me:
Sye said:Regarding the min/max report, you need to choose the option to sort the Beam Stress report based on the Combination Stress. If you sort from high to low, the first row would give you the highest ( positive) value and the last row would give you the lowest (negative ) value for the combined stress.
The issue is my model has more than 9000 beams and 96 load cases to analyze and the beam stress report shows the results in 13 beam sections. So I have a table with more than 9000x96x13=11232000 rows. Even in the case of getting reports by zones the tables I get is too big. Is too much rough if I want to analyze which beams have more stress than a determined value with such many information.
Definitely, my question is about if I can get a report that only shows one max/min for each beam in the worst section for the most unfavorable load case. Is there the possibility to create my own sort of report?
Many thanks again and excuse my insistence.
If the min/max information is required for each beam then I think the closest option to what you are looking for would be to look at the max force envelope ( example PRINT MAXFORCE ENVELOPE LIST 1 TO 9000 ) and you will get an envelope of forces/moments based on all load cases/combinations along with reporting of which load case is critical, critical section location etc on a member by member basis. You will get the following output in the analysis output file
This is not a an envelope for combined stress but rather an envelope for forces/moments which I think would also help.
This could be of help. Thanks Sye!