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Forums >> Revit Building >> Technical Support >> How to taper the end of a wide flange beam

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Wed, Aug 29, 2007 at 5:12:07 PM | How to taper the end of a wide flange beam

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stallion87lx


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Does anyone know how to do this? [see image] I just want the end of the beam to have a tapered cut.  Do I need to edit the sweep to be able to do this?  Thanks!

 


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Thu, Dec 30, 2010 at 10:19:38 PM | How to taper the end of a wide flange beam

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iamian33


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Stallion

Did you ever find an answer to this question?  I have a similar situation with several glulam beams in my project.

Ian


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Sat, Jan 1, 2011 at 5:06:54 AM | How to taper the end of a wide flange beam

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Warchitect


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If all you have is a notched glue lam, well just make a family, with the notch built in (doesnt seem so hard to me) the notching is usually similar for most applications...but if you are trying to "notch" a steel beam (if this is what you mean technically) (I feel like a true "tapered" beam would have the flange continue along a tapering web..?..) your not allowed in UBC code to notch steel wide flange beams

sorry if that response is choppy...


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Sun, Jan 2, 2011 at 12:15:24 PM | How to taper the end of a wide flange beam

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Mr Spot


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You can cut any beam family with a reference plane to the desired location.  Simply draw your reference plane, then select the cut geometry tool, select the reference plane and then the beam you want it to cut.

 

NOTE: Take note of the justification of your beam, the side of the beam that is kept is the side that its justified to.

 

HTH. 


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Tue, Jan 4, 2011 at 6:12:26 PM | How to taper the end of a wide flange beam

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Mr Spot.

I like your suggestion, but I am having difficulty making it happen ...

Im in the family editor, for an existing Glulam beam (duplicated from the metric revit library). I have drawn a reference plane at a 30degree angle.  I want to use this as my cut plane to represent the taper.

When I begin the Cut Geometry command, it will not allow me to select this (or any) reference plane.  I can only select the beam extrusion.  Revit's Help speaks of "reference plane in the plane of the wall" but I have no wall where I need to add my taper.  How do I select a reference plane which is not associated with a wall?

What am I missing?  I'm certain it's a simple thing ... 

I've attached a PDF showing the condition I am trying to achieve.  This beam condition will exist at every instance where the beam extends thru the perimeter walls of the building. 



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Tue, Jan 4, 2011 at 7:41:18 PM | How to taper the end of a wide flange beam

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pchan


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Ian,

What Mr. Spot suggested is to create a void extrusion(geometry) and then cut the beam to be a taper shape.

You can use the ref line to control the angle of the cut as well as use it to make the cut angle parametric.

You can also set a parameter where you can control the void not to cut the beam and you now have an option to have the same beam family with a taper end condition.

 

HTH

Philip


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Wed, Jan 5, 2011 at 4:31:34 AM | How to taper the end of a wide flange beam

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Mr Spot


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Thanks for trying to help Philip, but that isn't what I suggested.

Structural Framing families can be cut by reference planes in the project.  So you would draw your beam in the project initially without a tapered end, then draw a reference plane i a perpendicular section where you would like to cut it.  Then use the Cut Geometry tool as I suggested previously.

 

Yes you could make a beam family that has a taper already built into it, but given beams are so easy to cut in the project I tend to take this approach more often than not. 

 



Edited on: Tue, Jan 4, 2011 at 10:32:12 PM

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Wed, Jan 5, 2011 at 5:30:34 AM | How to taper the end of a wide flange beam

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pchan


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Mr. Spot,

Thanks for clarifing your method, this is the first I learn structual elements can be cut in the project environment.

It even works on other Structural elements, too.

 

 


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Thu, Jan 6, 2011 at 12:43:50 AM | How to taper the end of a wide flange beam

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Chris.

Works like a charm ... many thanks.  I think that we will eventually create a beam family that has a taper parametrically build in.  but that will be down the road.  for now, this is the way. 

too bad this technique doesn't work for the extrusion within the family itself ... sure would help here.


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