void moves when changing host size

[Karol_Piroska]

Hi guys, I wonder if anyone could help me with this one:

I need to add holes for bolts in steel beams so I created a void family to do that. It works fine, but if I change the host (beam) to different size, or a beam that is connected  to this one, the holes change position (sometimes way off).

Thank you

[Revit_Whisperer]

Are you dimensioning and locking the whole at the location you want it on the beam so it doesn't shift?

[Karol_Piroska]

yes and no. Some can be easily locked to a certain reference but other cant as it is a fairly complex industrial structure. However even some that are locked if the host is changed I get warning message  that constraints are not satisfied and even tho the beam size (width) can change by lets say 10mm, hole location jumps way off. As well as I have hundreds of these locking each hole to certain reference can be very time consuming.

I wish there was a way to lock it in space (maybe something like a "super pin").

[Revit_Whisperer]

I am wondering why it is necessary to model the holes...are these for interference checking?

As far as locking the dimensions...if you lock them to the top of the beam and the end, it seems to work as it should in my testing...assuming the beam doesn't get smaller than that value.

[Karol_Piroska]

yes, it is needed for coordination between several drawings. They have to be added based on suppliers drawings of equipment. That means linking the drawing to model, adding it and then checking against other drawings from others. I gave on the idea of detailing it and created a detail family instead and hiding the linked drawing - far from ideal but only efficient solution.

(yeas, locking works if there are no major changes - and there are major changes all the time which would result re-detailing all holes positions again and again). 

So I will add to Revit idea a "super pin" locking item to place no matter what happens 🙂