Forums >> Revit Structure >> Technical Support >> Beam Systems not sitting on walls #2

rfender

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Joined: Sat, Apr 11, 2009
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If I create a beam system on it's own level above a wall (top of wall on Level 2), so that the bottom of the individual

members sit on the top of the wall, just like they would if actually built, the individual members will stop at the face

of the interior of the wall, instead of running over the top of the wall.  The first 3 graphics below show what I would

like to happen.  The next two show what actually happens (limited to just 5 graphics).  I am able to make the

members "appear" as if they are running over the top of the wall by separating the levels by 1/2".  As soon

as I set the level elevation so it will rest the members on the wall, the members jump to the interior face of

the wall.  Is there some setting or procedure I'm missing here?

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WWHub

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Joined: Tue, May 16, 2006
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Read this in your HELP:

http://help.autodesk.com/view/RVT/2014/ENU/?guid=GUID-B9F5927E-B875-4B60-8A62-46A399F0B69E

Cick on the tool then the arrow to remove the cutback.

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rfender

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I wasn't able to make that work.  When I place the beam system on top of the wall, the individual beams stop at the interior face of the wall.  If I use the "Beam / Column Join" option, it only moves the beams to the center of the wall.  It looks like in your example, you were able to start with the beams centered on the wall and then able to extend them out to the edge.  Sometimes I can make the beams go to the center of the wall, but most of the time they just stop flush with the inside face of wall.  One thing that I have done, and it has worked, but I can't seem to get it to work today, is creat a new level that is positioned above the top of the wall, far enough above so when the beam system is created, the system doesn't touch the wall.  After making the system, I then drop the level down so that the beam system is sitting right on top of the wall.  This has worked in the past, but now it doesn't.  I have also tried to set the "Elevation" in the properties toolbox to be above the top of wall level.  The beam system will extend out to the edges of the wall, but when I adjust the elevation so the beam system is sitting right on top of the wall, the system reverts back to the interior face of wall.  Hope all that makes sense???

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pijpiwo

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Joined: Fri, Sep 3, 2010
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Select all joists, not the system though (window select and use filter tool to get joists only) and apply start/end cutback in properties.

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rfender

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Joined: Sat, Apr 11, 2009
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OK folks... That is what I discovered today as well.  Start and End Joint Cutbacks.  It works.

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cizl

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Joined: Thu, Apr 15, 2010
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the start/end cutbacks work but still don't accurately represent the beams in plan as cutbacks won't show on the line representation of the joist, only the physical object. Revit should get this to model accurately. 

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wevene3

Joined: Tue, May 14, 2024
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Cutbacks will only impact the object's physical representation, not its line representation in the plan view. This is a restriction of Revit's existing capabilities, and you have identified a worthy enhancement suggestion. The line depiction of the beam or joist in plan view should appropriately reflect the whole length of the member, even if start/end reductions are made.

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