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Forums >> Revit Structure >> Technical Support >> Scissor Truss family - RAC2008

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Wed, Aug 29, 2007 at 3:21:36 PM | Scissor Truss family - RAC2008

#1

t1slc


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Joined: Sun, Feb 25, 2007
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I have a scissor truss that I downloaded. I'm attempting to edit the family so that I can have two different top chord lengths and angles, i.e. at the ridge the slope chages. I seem to have gotten it so that I can adjust the span of each side of the ridge seperately, but can't seem to figure out how to adjust the pitch independently. In fact, I can't seem to figure out how the family is utilizing the pitch parameter.

Anybody out there give me some help? 



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Tue, Sep 4, 2007 at 12:19:27 AM | Scissor Truss family - RAC2008

#2

robinballew


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Joined: Sun, Nov 27, 2005
298 Posts
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if you look at the family the designer of the truss has a formula that defines the height of the truss as

((left span + right span) / 2) * (tan(A))

 Where A is the aTan of the slope.

 


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