hi dear community.
i have join to you yet. i have a porblem about steel solution on RFEM 6. when i try to desgin tapered member i have got an error er0034 (desgin via member set).
i design a member for set of member. i mean sperate member - haunc and beam - after that i made them continuos member. but the programme give me a error.
by the way i have already set all design situations up.
thank you.
Hi temacelik and welcome to the Dlubal Community! 
thanks for your message!
To analyse the problem more precisely, the model file would be very helpful:
Click on File → Save as and choose the following settings to reduce the file size:
Then upload the file here (e.g. *.rf6, *.rs9) – this way, the community can also contribute to the solution.
Prefer not to share the file publicly? No problem – send it to me via direct message: click on my profile picture or user name → Message.
Best regards
Niklas Wanke
POTAS KANOPI_TEMA-2_com..rf6 (1.5 MB)
It looks like you've activated all members for the design. However, some of these members do not have design properties because they are being designed through the parent member set. This is the reason you're encountering the error message (see the image, example member 29).
You can consider this error message more as a hint rather than a critical issue. The members will still be designed as part of the member set. 
If the error message is distracting, you can choose to exclude the affected members from the design calculation to remove the warning (see the image below).
Let me know if you need further assistance or clarification! I'm happy to help. 
niklas thank you very much for solution. easy beasy trick. 
