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Forums >> Revit Building >> Technical Support >> Wall joining to roof problem

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Thu, Jan 2, 2014 at 10:42:03 PM | Wall joining to roof problem

#1

camerongood210


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Because of the relative complexity of the roof, we’ve had to create it using multiple roofs.  Now that we’ve gotten the roof looking the right way, we can’t get two walls to properly join to the roof. Those two walls happen to be at the intersection of two separate roofs (see attached images). Wall 1 joins/attaches correctly while wall 2 does not. Wall 2 will join up just fine with the roof if you detach it from wall 1, but obviously the two must to be joined. Every time you try to join Wall 2 to the roof, Revit gives you the warning “Can't keep wall and target joined” while highlighting Wall 2. Is there a way around this? FYI, the two roofs are at the same elevation. We are using Revit 2013. Thanks in advance guys.



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Thu, Jan 2, 2014 at 10:42:52 PM | Wall joining to roof problem

#2

camerongood210


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Here's the section thru wall 2



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Thu, Jan 2, 2014 at 11:34:32 PM | Wall joining to roof problem

#3

dgcad


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This is most likely happening because the two walls are cleaning up with each other at the corner and therefore are 'joined' to each other. To prove this try 'disallowing' the join at the intersection and see if that helps.

 

You can also create a sloped 'reference plane' (perhaps align and lock it) along the underside of the roof and 'attach' the wall to the refernce plane instead of the roof. Walls will 'attach' to other walls, floors, roofs and reference planes.


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Fri, Jan 3, 2014 at 1:12:55 PM | Wall joining to roof problem

#4

camerongood210


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Thanks for the reply. Wall 2 and roof 2 will clean up just fine if you disallow the join between wall 1 and wall 2, but you run into this same problem if you try to rejoin them afterwards. Placing a reference plane at the location you described seems to work, though. Here's one nit-picky thing about that though. See the attached images. As you can see, there is no diagonal line between the wall & roof at wall 1, but there is at wall 2 (because the wall technically ends at the bottom of the roof/reference plane). Is there a way around this? FYI, the wall/roof core layers are the same for both wall/roof 1 and 2. 



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127379_Wall_1.JPG127379_Wall_2.JPG

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Fri, Jan 3, 2014 at 1:33:08 PM | Wall joining to roof problem

#5

WWHub


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Can you show us your roof?  I'm curious as to why you did multiple roofs.


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Fri, Jan 3, 2014 at 3:13:22 PM | Wall joining to roof problem

#6

camerongood210


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The gable right past the steeple is what kind of makes it a challenge. I just didn't see any other way to do it than creating seperate roofs.



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Fri, Jan 3, 2014 at 3:18:43 PM | Wall joining to roof problem

#7

WWHub


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All of those roofs except for the roof with the steeple and the portico appear to have the same base level.  As such, those could / should all be one roof sketch.


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Fri, Jan 3, 2014 at 3:37:03 PM | Wall joining to roof problem

#8

camerongood210


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That's correct. All those roofs are at the same elevation. I wouldn't even know how to draw a roof with that interior gable thing.


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Fri, Jan 3, 2014 at 4:00:39 PM | Wall joining to roof problem

#9

WWHub


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One roof.  You have to cheat a little.  If you look, you will see I used an 1/8" roof jog at the top and bottom L.  Instead, I think Instead I could have used a roor slope arrow there to make that slope.



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127391_Capture.PNG127391_Capture2.PNG

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Fri, Jan 3, 2014 at 4:18:20 PM | Wall joining to roof problem

#10

camerongood210


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Thanks man. I'll give it a shot.


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Fri, Jan 3, 2014 at 6:44:21 PM | Wall joining to roof problem

#11

camerongood210


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WW, what version of Revit are you using? If you're using 2013 or earlier, could you upload that model so I can see how you sketched that roof? Thanks.


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Fri, Jan 3, 2014 at 7:20:06 PM | Wall joining to roof problem

#12

WWHub


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The second image above is my original sketch and it shows where the slopes are.  I have now changed the lower L and the upper L using a slope arrow as I suggested and two lines that meet at the peak.  Look at the image.



Edited on: Fri, Jan 3, 2014 at 1:21:17 PM

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Fri, Jan 3, 2014 at 11:56:46 PM | Wall joining to roof problem

#13

camerongood210


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WW, I really appreciate your help so far. I understand the slope arrow thing now. Thanks. Take a look at the attached image. Won't those roof return be a problem?



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Mon, Jan 6, 2014 at 1:19:42 PM | Wall joining to roof problem

#14

WWHub


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Only if they return under the gable .... and I would think the would for just a little bit.  You could fix these with a little roof edge sweep, an in-place or a little roof.  I might split off just that section of roof all the way done to the eave (so that I could define it easily) and do just that portion seperate....  As usual, you have multiple options. 

 

Whatever you decide, I'm sure this was a good learning exercise.


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