Forums >> Revit Building >> Technical Support >> Revit 2016 How to set the wall height to respond to ceiling heights?

fleentrain89

active

Joined: Fri, Jun 13, 2014
0 Posts
No Rating

By default, walls may be constrained to floor levels or reference planes, but not to ceilings.Most wall heights are respective to ceiling height - not the floor level - and most projects have various ceiling heights.Since Revit has the RCP information, can wall families be set to rise up to (or offset from) the ceiling in that defined room?For instance: All walls in "family A" set to a height of 6" above the ceiling, within that room volume?This way, all walls in "family A" would be adjusted to rise above the ceiling, regardless of ceiling height.Thanks!!

This user is offline

teafoe5

site moderator|||

Joined: Fri, Nov 12, 2010
1749 Posts

"Most wall heights are respective to ceiling height - not the floor level" You are somewhat correct however your walls are built long before your ceilings are put in so you have to set a height of your walls and to do so you need to know what that height is off of the floor level not off of the ceiling.  Eitherway the answer to your question is no, there is no way to do this.

This user is offline

View Website

fleentrain89

active

Joined: Fri, Jun 13, 2014
0 Posts
No Rating

Thanks for the response! I don't see why the walls can't be set to take the highest adjacent ceiling, and add a user input offset (just like with the deck) - if there is no ceiling the model, the wall simply goes to deck. When the user modles the ceiling, the wall adjusts accordingly. Its a simply "if : then", provided revit can determine the volume of a room using ceiling height, it should be able to use that same information to create a parametric wall type.  Is there a script, macro, or Dynamo definition that could accomplish this?   

This user is offline

WWHub

site moderator|||

Joined: Tue, May 16, 2006
13079 Posts

You could probably create some sort of dynamo script but I think this is a user issue - not program.  Walls often have ceilings on both sides of the wall.   Which wall would control the ceiling?  With a dynamo script, you could check both sides but what happens when you got a T intersection and possibly an adjacent space with now ceiling? 

Although I don't like your process, here is a process you can use to do what you want.   Levels do NOT have to be floors or roofs and they don't have to show in elevation, they can just be a reference that can be used to control elements.   So create levels without associated views and put them on normally off workset.  Levels like first floor 8' clg, first floor 9' ceiling.   Now assign your walls to go to tghe correct level with offset.

This user is offline

fleentrain89

active

Joined: Fri, Jun 13, 2014
0 Posts
No Rating

You could probably create some sort of dynamo script but I think this is a user issue - not program.  Walls often have ceilings on both sides of the wall.   Which wall would control the ceiling?  With a dynamo script, you could check both sides but what happens when you got a T intersection and possibly an adjacent space with now ceiling? That dynamo script woudl be perfect!  The ceiling height would inform the wall height, so in the event two adjacent rooms have two different ceiling heights, the highest ceiling would determine the separating wall type.  otherwise there would be a gap under the ceiling in the larger room). In the event there is no ceiling, the wall would just go to the deck unless the user specifies otherwise. Would that be possible to create in Dynamo? Adding reference planes and levels would kill the model  This is a detail that is only specified in certain drawings, so its not critical - but it bothers me to no end that such a simple issue has not been thought of in a BIM model - no doubt there has been many change orders made because the wall was not the correct height. Also - if I do a section-box, it would be incredibly nice to see the different wall heights.  

This user is offline

fleentrain89

active

Joined: Fri, Jun 13, 2014
0 Posts
No Rating

For example: Lets say those constraints are satisfied in this order:  Floor, walls, ceiling. I know the walls need to be 6" above the ceiling, but I have not drawn in the ceilings yet - so the walls go to the upper floor for now. I draw in the ceilings (establishing their height).  There are now four senarios: 1- equal height ceilings on both side of wall. 2- one ceiling is higher than the one on the other side of the wall. 3- there is a ceiling on one side of the wall, an not on the other. 4- there is no ceilings in either volume. In 1, obvioulsy the user-defined constraint goes into effect: the wall is reduced in height from the upper deck, to be 6" above the ceiling level.In 2, the higher ceiling is used to determine the wall height. In 3 and 4, this particular wall type would not be appropriate, and should not be used.  An error message would inform the user that the wall is incorrect so they can change it. If the ceiling is deleted, conditions 3 and 4 woudl occur, and again, the error message would inform the user so they are **at least AWARE** that there is an issue with the wall partitiions.  

This user is offline

WWHub

site moderator|||

Joined: Tue, May 16, 2006
13079 Posts

Adding levels doesn't do much at all to the model.

This user is offline

Ceiling height column problem in schedules

0

Wall heights - change all heights simultaneously

2

Tagging multpile ceiling heights in the same plan

1

Spot Elevation-overall height issue

10

Multiple Ceiling heights

3