what is a circular chain reference

[ray salmon]

can't seem to fix it

the error just says fix it
but how???

r

[iankids]

Hi Ray,

I assume you are in sketch mode and you are getting the error when clicking the "finish Sketch" or similar button.

If this is the case, the most likely cause of the error message is that in the sketch mode you have two lines drawn on top of each other.

Go back to your sketch and check that there are no remnant lines left over from whatever it is you are editing. I typically find this error occurs when I am editing floors which might duck in and out around various walls in a brick building & I accidentally leave a minor line some where.

If the assumption above is not correct, please give a little more info on how you are getting the error message.

Cheers

Ian

[ray salmon]

actually this happened in editing dimensional timber

[jeffh]

I see this on occasion when placing structural members. (Timber framing like you mention) It means you have a support condition where a member has ended up supporting itself in some way. I can't think of a specific example of when you would see it but basically the loads are not being transfered down. They are somehow supporting themselves. Does that make sense?

[Rick Houle]

I have also had this occur inside an overworked curtain wall system (where panels were filled with basic walls in an excessive fashion - whether or not that played a part).
The user was just trying to rotate the curtain wall out in space and i think a piece of floor was attached. I cannot remember the exact situation, but I do think the error was caused by the curtain wall joining up with the floor (sketch) in some manner. Ultimately, the floor sketch was removed from the equation and i believe it then worked. (but we may have also reconstructed the curtain wall differently).
Just trying to offer clues, as i recall this was not a fun message to deal with.
It is often easier to just rebuild the trouble piece.

[tamas]

This thread has some good suggestions:

http://forums.augi.com/showthread.php?t=10698

Tamas

[patricks]

Yeah I think circular chain errors usually happen when things get overconstrained, and something ends up align-locked to something else when it was already locked in the first place by another relationship.

[ray salmon]

the only way i could do this was, build the whole floor frame off to the side so that it was standalone... then when it was done pushed back in
no error messages .... would prefer to build this of course in place but get roadblocked to much

r