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Forums >> Revit Building >> Technical Support >> auditorium seat family and sloped floor
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Joined: Tue, Dec 18, 2007
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I'm trying to make an auditorium seat for a space with floors of differiing slopes. I need to change the angle of the bottom of the chair legs to account for varying slopes but can't figure out how to do this. I've tried using an unhosted template and creating a void extrusion aligned to a reference line with an angle parameter to make cuts of varying angles (didn't work). I've also tried nesting the unhosted chair into a face-based template and then trying to tilt the whole chair relative to the template surface so that it would be vertical when placed on the appropriate floor slope, but Revit tells me that the geometry can't be rotated. I've read lots of posts about sloped floors and walls, etc., but haven't found any that discuss how to make an object with a parametrically controlled angular base. I'd be very grateful for any ideas. I'm sure there must be a way to do it but I'm still scratching my head. Thanks. I'm using MEP 2009.
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jlights |
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Joined: Mon, Jan 12, 2004
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So as an MEP engineer you are creating seating?? I've created a similar face based family for roof vents (whirlybirds). I would take the approach of modelling the chair on a rotatable reference line host. If people are really nice to me I'll post my whirlybird family... :D
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Chris.
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Chris, Thanks for the info. That's exactly the kind of thing I'm trying to do and I'd love to see your whirligig. I'm sending niceness your way. Actually, after I posted my question I answered someone else's lighting question to spread the niceness around. I'm attaching two screen grabs of a test file I created to work out the process. One shows the chair on a flat surface (0 deg. slope). The other shows the "foot" of the frame sloped. I aligned the "foot" extrusion to a reference line and rotated it. Problems: 1) the line and the foot won't move together if I change the angle. 2) If I were to place this on a sloped floor, wouldn't the chair tip forward so that it would still be perpendicular to the project floor as it is in the family? 3) how can I get the tilted foot to cut off the leg to which it's attached so it looks right? Conceptually, wouldn't the family need to be built so that the chair geometry itself can be tilted at an angle complementary to the floor slope so that it is vertical when placed on the slope? Actually, I'm not an engineer but a lighting person who makes a lot of lighting fixture families, and this chair assignment came into my life recently. Plunging ever deeper into the family editor... Thanks again! Judy
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