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Creating a void through concrete slab and beam

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    Creating a void through concrete slab and beam

    Hi,

    I have created a Generic Family with a void that we use in concrete slabs. I though in 2012 a family with a void could cut both floor slabs and the beam but the family I have only cut the floor and not the beam.

    The "cut voids when loaded" is ticked.

    Any suggestions would be appriciated,

    Thanks,
    Jh75
    Attached Files

    #2
    make the family generic model face based not floor based.

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      #3
      Originally posted by jh75 View Post
      The "cut ~with~ voids when loaded" is ticked.
      Yes, but it also needs to be checked in your BEAM family(ies). (the "with" is the key word. Actually, any family that you want this void to cut needs to have that box checked... Personally, I find this a little dangerous if the Mechanical guy wants to run a duct through my beam. I'd rather a conflict arise in clash dectection. If the opening is too large, we need to stiffen the beam for the opening.)
      Last edited by LeanneZ; March 13, 2012, 12:43 PM.
      Leanne Zaras, CDT, LEED AP
      AutoCAD 2010 Certified Professional / Revit Architecture 2012 Certified Professional / Revit Structure 2015 Certified Professional
      ACAD2021, RST2014-2021 / Windows 10, 64-bit

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        #4
        Hi,

        I have had some time to play around with this and attached is a sample revit file.
        I was hoping you could use a Gen void family to ‘automatically’ cut the slab and beam.
        The best option seems to be to use a ‘plan generic’ model with a void and ‘manually’ cut the void in the slab and beam using ‘cut geometry’.

        Johk

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          #5
          Hi,
          Forgot to attach the files.

          Johk
          Attached Files

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            #6
            I have been working on this issue myself. I need to notch out grade beams at stepped down pilaster locations. I created an in-place model of the void I required and joined it to the concrete beams. I then put the void shape on its own workset called 'ST-VOIDS'. I then made that workset invisible in all views... seems to be working, the next issue is that when the column comes down onto the lowered pilaster it goes through the void but also bumps out the concrete beams because the concrete beams think they are being supported by the column. grrrrrrrr.
            GradeBeamPilaster.png

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              #7
              ok, Found easier solution - Grade Beam w/ notch at Pilaster

              So I fought with this for a while and found this a much easier solution. I just pulled the beams back from the intersection and added a second pilaster to fill in the higher area. not very parametric but it works for arch sections and the column locations are most likely not going to change. (last words).
              PILASTER-3D.png

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                #8
                make your pilasters out of concrete columns and attach them to the the grid lines if they need to move they will all move with the grid lines. and also the back small piece as well then they will update if you have to move the grid lines
                Last edited by Darius; November 27, 2013, 03:37 PM.

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