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    Joining beams to slabs

    I'm trying to join beams with slabs. However, when I press Join, Revit is not allowing me to even select a beam. It does allow me to select any other element though, including other structural elements such as columns. Does anyone know what the reason might be?

    #2
    Am I doing something inherently wrong? I made a test on another machine on an older version of Revit. I'm modelling a simple structural slab and a beam. Both of them have concrete material applied. When I'm trying to join them I run into the same issue. I can select the slab but not a beam. Unjoin command is not doing anything either.

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      #3
      I think we may need more info, or a chance to investigate your model.

      Very quickly, I opened v2018, began a new project using an OOTB Structural Template, drew in a floor and added some concrete beams. In previous releases, the material had to be THE EXACT SAME material in order to join. However, after investigating my test project, my floor is lightweight concrete and my beams are Cast-in-Place Gray. I was not expecting them to join, but they did.

      So, I'm not sure what is going on with your project.
      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
        Any chance the beams you are trying to select are part of a Beam System, and- therfore- pinned? It is possible you have "Allow selection of pinned elements" turned off, so you cant select the beams.

        Are you able to select them when you arent in the join command?
        Aaron "selfish AND petulant" Maller |P A R A L L A X T E A M | Practice Technology Implementation
        @Web | @Twitter | @LinkedIn | @Email

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          #5
          Thank you both for your replies.
          The beam is not pinned and I can select it outside of the join command. Maybe I'm doing something wrong while creating the beam family? I'm attaching the link to the test file: https://drive.google.com/open?id=0B9...EN1aDQ2YzNGV0E

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            #6
            Originally posted by panbystry View Post
            Thank you both for your replies.
            The beam is not pinned and I can select it outside of the join command. Maybe I'm doing something wrong while creating the beam family? I'm attaching the link to the test file: https://drive.google.com/open?id=0B9...EN1aDQ2YzNGV0E
            I suggest using the concrete beam that is in the library, which uses a profile sweep instead of a sketch extrusion like yours. When I changed yours to a profile sweep it worked as intended.
            Michael "MP" Patrick (Deceased - R.I.P)

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              #7
              Originally posted by MPwuzhere View Post
              I suggest using the concrete beam that is in the library, which uses a profile sweep instead of a sketch extrusion like yours. When I changed yours to a profile sweep it worked as intended.

              This solved it. Many thanks! I reckon it must be a bug though, I imagine both beams should behave in the same way.

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                #8
                Originally posted by panbystry View Post
                I'm trying to join beams with slabs. However, when I press Join, Revit is not allowing me to even select a beam. It does allow me to select any other element though, including other structural elements such as columns. Does anyone know what the reason might be?

                The reason is with the family. If we put the material behaviour of the beam as concrete and put the visibility of the 3d geometry(sweep) to be visible in coarse, medium and fine then this family will auto join with slab or other concrete beams in project.
                Next, if we put the material behaviour other than concrete(steel), and put the visibility of the 3d geometry(sweep) to be visible in coarse, medium and fine then this family can be used with join tool in project. We can select the beam using join tool.

                In most of the structural framing family, the solid geometry will be set as invisible in coarse mode.

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