We have a masonry wall that has a very specific cornice profile on the top of the wall which steps as shown in the attached detail and image. The top of the cornice requires a parapet cap. I can use a wall sweep to make EITHER the cornice, OR the parapet cap, but not both as Revit says either: "Two sweeps cannot occur in the same location.", or (when tried raising the cap sweep above the cornice sweep), "The [higher] sweep is not attached to the wall" (and then Revit deletes it, grrr!).
As a temporary solution, I've made ONE profile which includes the shape of the cornice AND the parapet cap and "painted" the cap with a different material so that it displays, renders, details, etc, ok. However the Architect requires the cap to be a separate piece so it can be scheduled. I cannot determine how to accomplish this.
Something that I've considered, but have not been able to find is a method to create a custom wall profile that is inherent to the wall and not added later as a sweep/reveal. This would put the shape of the stepped cornice into the wall itself. Then I could add the cap sweep to that wall. Don't see how to do that though.
Any help is appreciated!
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Thanks for the suggestion on breaking into parts, but I'm not sure that will give us the "true sweep" data needed for scheduling... the "model in place sweep generic model" sounds promising, but I'm unfamiliar with it? Is that the same as a modeled in place mass?
Thanks Gary,
The trouble I'm having with what you've suggested is that when the parapet cap is offset any distance above the wall (and turns a corner) then one of two things always happen: either the corners of the parapet cap don't clean up (either overlap, or break apart), or segments of the parapet cap disappear altogether. Have you seen this issue? When I try to grip the blue dots to adjust, they just snap back into place and nothing changes.
Image-1 is of the parapet cap attached to the top of the wall and has nice, tidy corners. The top of wall is +10'
Image-2 is of the parapet cap offset +2' (the height of the cornice). You can see that one of the parapet cap segments disappears. On some walls all of the segments remain visible, but the corners break apart. Sometimes they have a gap, sometimes they overlap (it's inconsistent).
Hi Gary,
I tried your suggestion about making the cornice a subtractive element (-2'-0") from the top of the main wall, and that seemed to work ok that far... I was then able to place the parapet cap on top of that, which is to say that visually it's 2'-0" above the top of the brick wall, but actually sits at the true top of the wall = to the top of the cornice. The trouble is when the parapet cap is placed in this fashion (no offsets at all) the corners of the parapet cap don't/won't clean up. I get the grips when I select it, but they are fixed in place and cannot be dragged to the correct locations unless it is actually touching the visual top of the wall (two feet below the actual top).
I will try the air gap technique extended up to the actual top of wall and attaching the cap to that, and let you know how it goes.
Thanks for your help with this
JP
I was able to add a membrane component layer to the inside of the wall (in the "Edit Structure" dialog), and made the material type "Air". I unlocked all of the top edges except this layer. This allows the cornice to cut the top of the wall where it is inserted, except it leaves the air layer sticking up past the other parts of the wall, but it is invisible... except for a single line that runs around the top interior representing the edge of the air material. I guess I can hide that line in views where it is a problem, but otherwise I think this solves this issue. Gosh, what an insane workaround!!
Thanks for all the suggestions!
PS. I've photoshopped the padlock symbols into the image just for reference because you can only see them one at a time. This is just to illustrate which are locked, and which are not.
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