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Forums >> Revit Building >> Technical Support >> Wall Constraints invalid
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Joined: Tue, Jul 21, 2009
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I'm using Revit Arch. 2010 I'm having an issue with wall constraints. I'm trying to put in basement walls with the Basement level as the bottom constraint and the main floor as the top constraint. When I try setting this I get an error saying "Top Constraint is invalid for the Level." However if I set the top constraint as unconnected I can come back afterward & change the top constraint to the main floor level. What am I missing? Thanks for your help.
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Any Ideas?
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Can you upload your model with everything stripped out except the basement wall and levels? It will be difficult to see the problem without seeing the model.
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Attached is the stripped down drawing. Note that Revit will not allow me to connect the base of the wall to the basement level and the top of the wall to the main floor. However it will allow me to draw the wall with an unconnected top & then come back and change the top constraint to connect to the main floor. I am assuming this is a bug in the program, but please let me know if it is something that I am doing wrong. Thanks.
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Still no Ideas?
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I get this issue pretty much all the time. Does nobody else have this problem?
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I'm not running 2010 and I couldn't open your drawing, so this is a shot in the dark. Sometimes when you insert a wall, the top constraint is Level 1, but the offset is -20' (for example). So, the top of the wall may be below the base constraint. When you click Unconstrain, then the top constrain is irrelevant. I think you can change going into the wall command, pick a wall type, then go into properties before drawing the wall. Check your top and bottom offsets there. Let me know if this helps... MB
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In the element properties of the wall, the top constraint is set relative to basement level. When you then set the depth as being the main floor level it contradicts the properties. Before you draw the wall set in the constraints (in properties) from the main floor and not the basement.
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Hi, MB Thanks for your comment, good to keep in mind, although this is not the issue here. I am trying to set the top and bottom offsets as zero. Tim, I'm not sure I'm following you correctly. I was trying to change the settings in the properties box. If I draw from the main floor plan I am able to set the constraints correctly, but I don't want to draw my basement from my main floor plan. However after more analysis (and probably fluke) I think I have found the issue. The wall is a basement concrete wall, and in the Type Properties is was set as Foundation (and I would refer to this as a foundation wall). If I change the type to Exterior rather than foundation, It will allow me to change the constraints. So the issue seems to be that Revit won't let you draw a foundation going to the floor above?
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When you execute the wall command, the design bar populates with a few options. One of them is a Height/Depth option. If you choose Depth, I believe Revit will draw the wall from the current level down. If you choose I height, I believe Revit draws from the current level up. I think that's about right. I am drawing Height with an unconnected top constraint. Did that work?
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I think it worked for me emgeeo
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"
When you execute the wall command, the design bar populates with a few options. One of them is a Height/Depth option.
If you choose Depth, I believe Revit will draw the wall from the current level down. If you choose I height, I believe Revit draws from the current level up.
I think that's about right. I am drawing Height with an unconnected top constraint.
Did that work?
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oh my gosh stupid revit, i've had this issue with columns, couldn't work out how to do them. thanks!!!!!!!!
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GlobalDS, THANK YOU for figuring this out! This has been bugging me for weeks - your solution of changing the wall Function under Edit Properties worked perfectly!
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If its a structural wall, in edit type under construction, change the function. This worked when I came across the problem
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