Modeling a Built-Up Roof in Revit Architecture 2008
Some time back I listed my top three favorite features of Revit Architecture 2008 and they did not include the new slab modification tools. I figured what the heck good were they if you couldn't edit one side of the slab independently of the other?
So... if you're not as big an idiot as I am, read no further (and after that last statement, you'll know if you're as big an idiot as me). If you ARE an idiot like me, keep reading.
Turns out I was wrong - OH, so wrong. The worst part of it is, it's plainly stated in the New Features Workshop: "Slabs also have an additional parameter to create material layers with Variable thickness. When this is active, the non-variable will remain the same thickness throughout the slab while the variable layer will adjust accordingly based on the slope."
DOH! It's so blazingly simple! Try this (note: I'm assuming that you are using the default Revit template or a derivative thereof):
Create a roof by footprint. Using the line tool, draw a rectangular shape and make it a flat roof. Set the roof properties to use the type "Steel Truss - Insulation on Metal Deck - EPDM".
Edit the roof type properties and select the "Edit" button next to "Structure". For the 2nd row down (the "Insulation/Thermal Barriers - Rigid Insulation" material), place a check mark in the "Variable" column as in the image below.
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Select "OK" to exit all dialogs.
That's the key.
Now select the roof and use the "Draw Points" tool in the options bar (shown below), to create a single point in the middle of the roof. Set the elevation to a value like -3".
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That's it. You're done. Cut a section through the roof and take a look. Only the insulation material should be modified.
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How easy is that? Do you feel as stoopid as I do? Good. Come join the rest of us. We meet every Wednesday at 7 PM. Bring a covered dish (with food, stoopid!).