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Forums >> Revit Building >> Technical Support >> Pitch Formula
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Joined: Tue, Sep 5, 2006
93 Posts
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Hi... I need to make a Gable VEnt that adjusts with the pitch of a roof. anybody have any advice on writing a formula to adjust the height of the vent depending on the width and the pitch?
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Joined: Mon, Jul 4, 2005
137 Posts
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atan (slope/12) where slope is your pitch, i.e. 7 in a 7:12 sloped roof. see attached
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Joined: Mon, Jul 4, 2005
137 Posts
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Can't seem to attach the screenshot, too big. Here's the family
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Joined: Tue, Sep 5, 2006
93 Posts
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thankyou sooooo much...im just not a mathematical wizard so it was baffling my lil' brain!
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Joined: Tue, Jun 29, 2004
543 Posts
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I've made a fancy one you're more than welcome too. It has some constraint problems I haven't figured out yet though. My method uses a little different calculation than what Dgodfrey said, but that's what most use is the atan formula. I did a rise/run and attached reference lines to the planes.
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Joined: Tue, Sep 5, 2006
93 Posts
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Thanks. Its always good to see the different ways that people do stuff.
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Joined: Tue, Sep 5, 2006
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Here is the one I ended up making. The louvers arent too fancy but Im not planning on rendering this one.
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