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Thread: Floor thickness issue

  1. #1
    Member byk3bep's Avatar
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    Floor thickness issue

    I created the roof of the building using the floor command.

    The problem is that the specified thickness of the floor (20cm) differs then the one that is shown in section. I'm guessing that it has to do with the slope angle, and that the floor thickness is in the global z direction.

    Is there a way to correct this, or am I going about this the wrong way. What is the right way?

    Floor thickness issue-ss2.jpg

    Thx for the help, it's much appreciated

  2. #2
    Moderator cellophane's Avatar
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    How did you get your slope? Did you use a slope on your floor or did you use modify sub-elements? If you just apply a slope the thickness will stay constant across the object, if you use modify sub-elements it will distort.

    Why did you use a floor instead of a roof or multiple roofs?
    Attached Thumbnails Attached Thumbnails Floor thickness issue-floorthickness.png  
    snowyweston likes this.

  3. #3
    Forum Co-Founder Alfredo Medina's Avatar
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    That is a known consequence of editing points on a roof or slab. Revit usually issues a warning about it:

    "Thickness of this Roof may be slightly inaccurate due to extreme Shape Editing. Dimensions to this element in sections and details may not accurately indicate the Thickness shown in Type Properties."

    Maybe that roof could be done in other simpler ways, since it is not complex geometry.

  4. #4
    Member byk3bep's Avatar
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    Yep, it's a floor with modified sub elements

    What aproach would you take in this case?

  5. #5
    Forum Co-Founder Alfredo Medina's Avatar
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    I would create a roof type and a wall type with the same materials and thicknesses. A mass with the shape of the slanted walls. Then, walls by face, then a simple roof by footprint for the top. Now you can have proper thickness of materials for the sections.
    Attached Thumbnails Attached Thumbnails Floor thickness issue-2015-04-06_13-36-33.jpg  
    cellophane and willsud like this.

  6. #6
    Member byk3bep's Avatar
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    Thx for your help guys

    Cheers

  7. #7
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    How would you go about keeping the thickness consistent if roof has a complex geometry (see attached image)? any work around that would keep the roof points and lines editable and would give the roof a consistent thickness? In this case, the roof is modeled with footprint, modified by sub elements, cut with vertical opening and points at split lines intersection define the elevations.

    Attached Thumbnails Attached Thumbnails Floor thickness issue-roof-thickness.png  

  8. #8
    Forum Addict GMcDowellJr's Avatar
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    Model each facet individually and slope each as appropriate with a slope arrow. Clean up with voids, etc. No easy button if you need to maintain thickness.


    Sent from my iPhone using Tapatalk

  9. #9
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    Thanks for your response. I understand. This is what I was afraid of. In this case since the roof is quite large and elevations need to be more accessible and adjustable, this wouldn't be as efficient.

  10. #10
    Forum Co-Founder Alfredo Medina's Avatar
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    Maybe this needs to be modeled A) in a generic model adaptive template, using points, reference lines, individual surfaces and two reference planes as hosts for the points. Once this is loaded into a project, B) you create roof(s) by face. These roofs will have a constant thickness. To edit the roof, you edit the location of the points in the family, or the elevation of the hosts reference planes, or create void forms in the family, reload, and update the roof by face.



    Attached Thumbnails Attached Thumbnails Floor thickness issue-2019-01-14_13-43-44.jpg   Floor thickness issue-2019-01-14_13-43-13.jpg  

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