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Forums >> Revit Building >> Technical Support >> create-parts and multi-layered roofs with shape edits

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Sun, Feb 21, 2016 at 5:08:38 AM | create-parts and multi-layered roofs with shape edits

#1

bulcozor


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hello all,

I have a flat roof that has variable rigid insulation slopes in order to drain water at various points within its perimeter.

in the same assembly there is also a 1/2" plywood sheating base below the sloping insulation.

I would like to break that into parts, but after reading various web posts and trying it, it seems that roof shape editing

of a variable height layer (my sloping insulation), automaticly "kills" the create parts button.....and vice-versa....if I create

parts for a flat roof version, and even try to activate shape editing, revit will delete the parts......ugh

 

anyway around all this?....where I can have both parts and sloping insulation in a multi-layered roof?....or do I have to

just keep the layers as separate elements?

 

thanks

PS: using revit arch 2016

 



Edited on: Sat, Feb 20, 2016 at 11:09:24 PM

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Sun, Feb 21, 2016 at 12:41:12 PM | create-parts and multi-layered roofs with shape edits

#2

Beaucoupnice


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Joined: Mon, Nov 19, 2007
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The roof tool is good to make standard roofs but when it gets a little complicated its limitations can prevent you from achieving what you need.

In these circumstance what I have done is simply use an in-place family. I create a horizontal extrusion across the distance it spans, I make the profile of that extrusion a number of layers in accordance with buildup of the specific roof. I then use a vertical void to trim the extrusion to the boundary it must follow. This is then repeated for the rest of the roof. A mono-pitch/skillion roof is easy as it is a single extrusion and a pitched ridge roof can be done too.

Using an in-place family in this instance creates a solid that is sculpted to the exact spatial needs of the roof, allowing you to add in flat roof mounted elements such as roof plant at the correct height and design the edge condition such as a parapet or eave where the roof perimeter line runs. You can't extract out the names of all roof buildup materials (not without a lot of effort) but for plans, detailing, sections and elevations it is the perfect.


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Sun, Feb 21, 2016 at 2:50:34 PM | create-parts and multi-layered roofs with shape edits

#3

bulcozor


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not sure I can achieve what u mention in my case w/ just a in-place fam....esp. all the drainage slopes I need

here's a 3d bird's eye view, and a section cutting through a small part of the roof.....it's slopped insulation over 1/2"

sheating, over metal deck, the overall assembly.....the metal deck and rest of structural is in its own structure file (red)

while the sheating and slopped ins. is in the arch file....at this point I just ended up having the sheating separate

from the slopped insulation, because at time the sheeting needs to end closer to the wall elements then the insulation.

anyway here's an image....it's still a work in progress...

 



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144096_flatRoofWithVariableInsulation.jpg

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Sun, Feb 21, 2016 at 3:27:04 PM | create-parts and multi-layered roofs with shape edits

#4

Beaucoupnice


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3.5 Stars: 6 Votes


Just use a floor slab. Set the right thickness to suit your required roof buildup. Set the floor slab plan profile to the correct footprint shape. Then select the floor slap and adjust the spot heights all across it to suit your calculated falls.

Here's a youtube video to explain adjusting spot heights.

https://www.youtube.com/watch?v=cbudDb31Vzk

Cut out holes for drainage gulleys and add in family category objects as required.


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