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Structural Beam System Boundary Setting

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    Structural Beam System Boundary Setting

    I am creating structural beam systems to layout floor joists (metal studs).

    When I set the boundary to the inside face of my walls, the joists show up exactly where I want them. Flush with the inside face of the wall studs.

    See Picture #1

    Anytime a wall moves or the ceiling height is adjusted my joists automatically snap to the centerline of my walls.

    See Picture #2

    Then I have to go to each Beam system, edit the boundary and click reset system. Then they go back to face of stud.

    I am hoping there is an option that I can select to keep them flush to face of wall and not go to the center. Please help!!!! I thought there should be a beam connection point option inside of the beam system tool but apparently there is not.
    Attached Files
    Regards,
    Emmett Cruey
    ConnectedBIM.Design
    925-695-6000

    #2
    EC,

    Are walls structural? Meaning do they have the little check box that says "Structural" on?

    Is the boundary at the edge of the wall or centerline? Normally this kind of behavior is due to the structural element (joists) not being connected to the element they should cut to. In this case it appears that the joists don't see the wall as their appropriate support so they aren't cutting back like they should.

    Hope that helps.
    Tom Whitehead
    BIM Herder & Revit Wrangler
    Portland, OR

    Comment


      #3
      Yeah the walls are structural, and the boundary line is set to the face of the walls.

      I agree that they are moving to the centerline of wall because they are taking the centerline of wall as their connection point. Just not sure how to change this by default. The weird thing is, is that when I originally place in these beam systems they appear as I want them too.

      if Any change that is made to the elevation of the beam system or the location of the supporting wall the beams (joists in this case extend to the cl. of the wall)

      I then have to open up the system and click the reset system button for them to cut back to face of wall.
      Regards,
      Emmett Cruey
      ConnectedBIM.Design
      925-695-6000

      Comment


        #4
        Hey EC,

        Have you tried locking your boundary lines to the face of your walls when in sketch mode?

        Comment


          #5
          The Beam System needs Supports. Use Pick Supports when editing the boundary lines. That way the Beam System will adjust to changes made in the supports.
          Cliff B. Collins
          Registered Architect
          The Lamar Johnson Collaborative Architects, St. Louis, MO
          Autodesk Expert Elite

          Comment


            #6
            I know this forum is old but I am having a similar problem in Revit 2021. I can't seem to force a beam system (K joists) to align the ends with the face of the wall. It puts the end of the joist in the middle of the wall. If anyone has a good solution I'd still like to hear it.

            Comment


              #7
              Select the beams
              Click Change Reference
              Pick the desired wall face

              Comment


                #8
                Originally posted by AnnieTheGreat View Post
                I know this forum is old but I am having a similar problem in Revit 2021. I can't seem to force a beam system (K joists) to align the ends with the face of the wall. It puts the end of the joist in the middle of the wall. If anyone has a good solution I'd still like to hear it.
                The OOTB K-Series Bar Joist family comes with start/end offset and start/end extension parameters that can be used to control the joist seat length and location. Adding a value to the start/end offset should produce the results you're looking for.
                Tony Perez @Twitter
                BIM Manager
                Page Southerland Page, Inc.

                Comment


                  #9
                  Originally posted by Nurlan View Post
                  Select the beams
                  Click Change Reference
                  Pick the desired wall face
                  Thanks Nurian and Knitro87 for your responses. I tried both of those things and nothing seems to change.
                  The option to change reference is only there if the beam is not part of a beam system. I removed the beam system, but selecting a beam and clicking "change reference", then clicking on the wall face produced no result. Zero change.
                  End extension offsets are also only an option if the beam is not part of a beam system (which I would like to keep my beam system if possible but I did try it.) For some reason they didn't work either though.

                  I think it might have to do with the fact that my joists are locked to a sloped reference plane. So they slope down to the wall I'd like them to end at, following that reference plane.

                  I made sure my beam system edge is the face of the wall.
                  I CAN change the end of a joist (after removing the beam system) by dragging its "end dot" thing from the top view or side view. However, I can't snap to the wall face.
                  Any other ideas?

                  Comment


                    #10
                    AnnieTheGreat
                    The Change Reference works for beams in a beam system, regardless of slope and reference plane, as well as Start /End Extensions.
                    Can you attach a piece of your model with beams?

                    Comment

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