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Forums >> Revit Building >> Technical Support >> Join geometry is a PAIN !!
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Joined: Sun, Nov 2, 2008
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Join geometry is such a pain in revit.. walls & beams, walls & columns, floors and beams, floros and columns, almost everything needs to be JOINED. and there's no easy ways to join them also. it is so time-consuming and painful. Autodesk must do something about it... Also, Why can't a floor do a simple join geometry with structural columns??? i have a floor with a finishing layer. i want only my structure layer to be underneaththe columns and not the finishing layer? how is that possible?
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Why do you want to join all that stuff? Your file will take a sizaeable performance hit if you could join all that stuff together. Joins are nice, but they do use a fair amount of memory so we generally join only when necessary at locations where we will be cutting sections and details. Aside from that, a lot of stuff can be addressed by detailing instead of driving yourself nuts with modeling.
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will it not affect the schedule of quantities?? how do we trust revit's accuracy if the model is not precise??
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Joined: Tue, May 16, 2006
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I think the trust is something that you have to develope yourself. Revit is not an estimating or take-off program. It will give you a lot of information but you have to quantify that with what you know about the program and the model as well as the modeler.
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I agree Revit is not an estimating or take-off program but we can generate as much as we can if we do perfectly. Here in India most of the construction is with cocrete columns, beams and floors. Even in Architectural drawings we show almost all the Structural stuff like columns in Plans and Floors and Beams in Sections where all the 3 should get flushed which can be achieved only with Join Geometry.
When a Window or Door is placed in a wall, the wall volume gets deducted automatically. Why not when we place a Structural Column or Beam which goes into the wall? It defenitely helps us a lot instead of using Join Geometry everytime.
Coming to my question after I used Join Geometry for my wall and beam, I am getting correct values for the wall without finishes and wrong values for my wall with finishes. I placed Beam in the wall and joined, One wall volume is 1.487 and other is 1.44. You can check the Wall Material Takeoff Schedule and check the values by unjoining the beam and joining again. Does anyone know the reason? Please let me know if I am missing something else? Attached is a screen shot and revit model.
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Pavan Reddy
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Some one please say something. Atleast say it is a bug.
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Pavan Reddy
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Have you undestood the question or should I consider it as a bug?
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Doors and windows are hosted by the wall and their families include a void that cuts the host. Structural beams and colums are not hosted and don't include voids to cut a host. Join geometry is the only means to accomplish what you want. Not a bug but it is something you could add to a wishlist. However, it would really bog down the program.
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Thanks for the reply WWHub. You responded to the 1st half of my question. The actual question lies in the 2nd half.
Please have a look at the above post and reply. The wall with only brick joined with the beam gives correct volume and the same wall with the finishes gives different volume. Please let me know the reasons.
Find attached image and revit file in the above post. Thank you.
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Pavan Reddy
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I modified your file to make this work correctly but I can't share it with you since you are in one of the earlier versions.
Obviously Revit only cuts the material graphically so I edited the wall type and unlocked the core layer. Maybe you should consider something like that?
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Thanks for the quick reply. That's a nice work around, but why it is behaving like that. I can't modify all the core walls like this to get the exact values. There may be more than 100's of walls depends on the project. Can I expect this problem overcome in future versions. If it clears most of the quantities can be taken from Revit itself.
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Pavan Reddy
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124052_Join_Geometry.rvt