Moment End Plate Steel Connections

[hpayneM8AU3]

Hi, I'm trying to place a typical moment end plate connection. It is not every plate but sometimes I'm getting the error.

"A corresponding Parametric cut for the Cope was created. The Cope will no longer modify the fabrication

shape".

It then proceeds to trim the plate back as per the image attached. What causes this and how can I stop it from doing that?

[Rob_Merriman]

Hi @hpayneM8AU3 

This is very odd behaviour, could you upload some before & after screenshots, ideally a video and a copy of those members and the connecion in a Revit file so we can test

[hpayneM8AU3]

Please find the attached

[DumitruBerteanu]

I wasn't able to reproduce the issue on my side with the attached model, and also the video doesn't contain an instance where this problem appears. Does it appear random when trying to connect same elements, or its related to a specific situation in the model ?

Later edit : the warning message does appear on my side too in specific cases. This message is intended to appear when voids are present on the beams, or when the end copes/cutbacks can't be properly processed when applying a steel functionality. If no voids are present (case in which the message will tell you those voids will be removed), there is no issue with the cutbacks as the steel connections will create proper cuts and copes to compensate. 

[hpayneM8AU3]

Apologies im not sure why the recording isnt capturing the error. Ive attached a new video with grabs of the warning errors. 

[hpayneM8AU3]

I have also attached a clean model and a couple of connection grabs that correspond to the order I placed them in the video above. As you can see the plate is cutting almost to the bolts. Im placing the same connection in both instances but the second one produces the error.  

[hpayneM8AU3]

Hi @DumitruBerteanu, 

Did the above highlight my issue better?

[hpayneM8AU3]

This is a plan view of the issue. Same size columns and rafters. same connection, different plate size.

[DumitruBerteanu]

Hello. Yes, those files helped me reproduce and isolate the issue better.

I wasn't able to understand the root cause of the issue. it seems there is a conflict between this specific moment connection and the column orientation. I will send the file for further investigation on the our side, and will come back with more answers as soon as possible.

In meantime, the workaround you can use to obtain the expected plate side is to uncheck the option "Bolts defined by main beam", found on the Horizontal bolts tab (see pic. below). This will size the plate as expected.

The issue appears only in some cases because it is "dependent" on which side, which of the two flange you make the connection. On one side it is ok, while on the other side this issue appears. If you would rotate the column with 180 degrees for example, the problem wouldn't appear.