Family with Sweep Problem

[Kai.KoffmaneEWRR9]

Hi again, 🙂

I have a family problem and yet no solution. I creaste a family for a swan neck entry. The Family works only the problem is the sweep I create on the top for the neck entry.
If I lock this sweep to the reference plane with the 200 dimension with the botton I can not adjust the "_io_Höhe Abtropfhaube". I get a error message he can not move this with the sweep.

And I dont know which dimension I should add to move this if I change this paramter from maybe 950 to 700. Have someone a idea for this?

[ReneBogersREBO]

Not sure, but my guess that you "aligned" and "locked" your sweep to the reference plane?

If you try not to align it, but do it with a dimension (startpoint sweep-axis TO reference plane). Set this dimension to "0" end locked.

Not sure if it works, but worth a try 😉

[L.Maas · Accepted solution]

I quickly created this family (Revit 2019). Study it to see if it solves your issue.

[lim.wendy]

Hi @Kai.KoffmaneEWRR9,

Have you tried the suggestions by Rene and Lou, and did they work? Let us know if you still need help.

[Kai.KoffmaneEWRR9]

I have only one question. How you create this angle on this sweep on the top. I try to recreate this but by me I doesnt work 😞 Is this angle connected to the sweep directly?

It would be great you can show me this. Thanks again

[L.Maas]

Yes, if you edit the sweep path, you see this.

As path is locked to the bottom reference plane in the screenshot I can manipulate it with the arcdegrees parameter

[Kai.KoffmaneEWRR9]

Soory its me again..

In my familly its not possible to create a angle dimension to this sweep. The ends from the sweep are connected to this both reference lines but I can not create a angle dimension. 
If you know what is my mistake?? 😞

[Kai.KoffmaneEWRR9]

Sorry. The family is not 100% what I need. I have create this now and it works. The only thing is now I want to change the "_io_Hähe Abtropfhaube" Parameter and if I change this I want that the whole neck entry moves down and not change the angle. Is this possible?

I add also a sweep int he pipe so I can now look into this. This is what I need because normaly I must model a pipe in this swan neck entry. But this is now problem I think.

I added the family maybe you can have a look...

[L.Maas]

The void sweep you have in their caused a problem. The path of the sweep was not constrained/locked to the reference plane.

BTW I made a modification. I removed the void element. I changed the bottom straight part and the goose neck (you can do the other straight parts). I made it hollow by making use of an inner and outer circle. Used a formula that the inner circle is outer circle - thickness of pipe (Dicke).

I try to avoid voids as they tend to have a negative impact on Revit performance. So if I can (easily) create the same element without voids I tend do that. Of course voids within a project is not an issue. But when you have many of them it adds up.

Also consider if you need it really to be hollow? Every additional complexity will make the project larger and slower. Same as with the voids. Not so important if you have a small project or only few of thsoe families. But it might add up.

[Kai.KoffmaneEWRR9]

Thanks,

I change the other pipes also to this with Radius innen and no it works to change the height.
The only problelm now is then if I change the type to a other it broke the family. And I dont know if what is now the mnistake?

[L.Maas · Accepted solution]

For the other types look at the thickness parameter basically you are now trying to create an extrusion without any thickness which is not allowed so put for all the types here the thickness of the pipe material