By Jordan Mussett, IMAGINiT Building Solutions
Have you ever had a floor look like this because the structural group is responsible for model ownership of the floors?
Or maybe this?
When the floors are in a different model, the Attach Top/Base option isn’t available. Well, it is, there just isn’t anything to attach or join those walls to.
The same problem and solution presents itself with exterior architectural walls that join with structural floors, see detail image above. If the floors are in the Structural Model, they need to be copy / Monitored before the floor material can be taken out of the wall material or vice versa.
So what do you do? One way to deal with this is to Copy/Monitor the floors from the Structural Model. This will allow you to attach your walls to the underside of the floor above, something that is essential for every model. Not only does it make the model look good from the top, it can supply more accurate material takeoffs. Six inches of wall doesn’t seem like a whole lot but when you multiply it times all the walls on a floor for every level, it can amount to quite a bit. BIM models and numbers derived from them are only as accurate as they are modeled.
To Copy/Monitor, go to the Collaborate Tab and find the Copy/Monitor Tool. Select it, then select the Structural Link. To make an accurate copy, go to the Options and copy over the exact same floor or make sure you are matching it up with a floor type in the architectural model with similar material and thickness.
Note: you will need to go into your Visibility Graphic Overrides and turn the floors from Structural off, especially for the exterior wall condition.
Before and after below.
You might be wondering what will happen with attached walls when I decide to copy / paste aligned to selected levels? These walls are in a group because the building has similar floor plans from the 11th to the 26th floors. The interior walls are all in a group and that group is copied to the other levels. Revit performs admirably and attaches the tops of the walls in the copied group to the corresponding floor. This, however, is assuming that the floor has been Copy/Monitored from Structural and that the floor to floor heights are the same. If the floor to floor heights aren’t the same, the group will copy but the walls will be too short.