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Thread: modeling depressed slabs

  1. #11
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    Default Re: modeling depressed slabs

    Not sketch based unfortunately. The only addition I have to this is a triangular option that has some basic trig for offset corners. between those I can usually create the area I want. If it's really complex then I will use another floor since that is faster then having families for all situations.

    There's a limit to tools like this, before it becomes to cumbersome for them to be fast and useful.
    AJS
    BIMM Consultant
    www.GHD.com

  2. #12
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    Default Re: modeling depressed slabs

    From a structural drafting standpoint, I hate voids for set-downs. It's just an extra problem.
    The reason I hate them is - more often than not, set down areas have a slab fold where the set down area overlaps with the upper slab, causing a "fold", this is something architects rarely model correctly, and something that is required to be shown in structural documentation, voids do not handle this issue.

  3. #13
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    Default Re: modeling depressed slabs

    I don't have this issue, but my voids are for wet area's mostly.
    AJS
    BIMM Consultant
    www.GHD.com

  4. #14
    100 Club Steve Mintz's Avatar
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    Default Re: modeling depressed slabs

    travis - Most of my irregular depressions in a project have been the same (usually for bathrooms), so I will copy the family and "hard code" the shape. If I have a number of different irregular depressions, I might resort to inplace families.

    (From an engineering standpoint, I usually prefer to question why we have this number of irregular depressions, and if the contractor can actually achieve them).

    karalon - Agreed - I dislike them. For slab depressions (a 1" to 2" decrease in fill thickness, I've never needed to show any special details). For depressed slabs (where the metal deck drops in addition to the fill), I've added detail components to my depressions so that when cut in section, they add most of the drawing information for the "fold". For these cases, I also consider it appropriate to model a separate slab (because structurally that is how it functions and how it will be built).

    Just my $0.02

  5. #15
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    Default Re: modeling depressed slabs

    It's a shame you can't put a reveal in the floor. That's what I do for beam pockets

  6. #16
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    Default Re: modeling depressed slabs

    I'm bringing this thread back to life since I am currently trying to do this in my current project (Revit 2012). The link to the tutorial that was posted by Steve Mintz is no longer active. Does anyone have another tutorial on how to create a slab depression family?
    Thanks

    Nic

  7. #17
    Member mburke.54112's Avatar
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    Default Re: modeling depressed slabs

    We don't model too many slab depressions in our projects, so we use a "model in-place" component.
    I've created directions for how we do it:
    To create an “Model In-Place” Component for a Slab Depression:

    - set Workset & Work Plane to correct level (the level that the slab depression is to be modeled)
    - {Home} tab / WorkPlane
    - {Home} tab / Component / Model In-Place:
    - Family Category = Floors
    - Enter a name for slab depression (ex: “Slab Depression”)
    - {Home} tab / Model Line:
    - draw outline of slab depression (KEEP IT WITHIN A FLOOR SLAB)
    - {Home} tab / Forms / Extrusion:
    - {Properties} box:
    - Start = 0”
    - End = (the depth of depression as a negative number (ex: -1 ¾”))
    - Solid / Void = Void
    - {Modify | Create Extrusion} tab /Draw
    - pick lines of outline just drawn
    - Finish edit mode
    - {Modify | Void Extrusion} tab /Geometry / Cut
    - pick Floor Slab
    - pick Slab Depression
    -{Modify} tab / In-Place Editor
    - Finish Model

    Drawing the depression two times (model lines & create extrusion) will ensure that you can see & pick the slab depression for future editing.
    Hope this helps.
    Michael
    Mulkey Engineers & Consultants
    www.mulkeyinc.com
    - Happiness is Wanting What You Have, Not Having What You Want -

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