Reading other international blog published an article on the possibility of modeling of roofs and floors by modification of secondary elements.
are a very powerful tool, no doubt, but that has nothing to do with the correctness of a model obtained with the instruments "traditional" in Revit.
looks like a command made especially for complex shapes very quickly and without thinking too much ... but the margin of error that introduces are alarming.
As always, the potential of this fantastic program must be understood and analyzed in depth to avoid injury.
Where does the error? Try to draw a roof with a given thickness (with no stratum variable), inclinatetelo in a lawful way (by setting the slope of the edges that define it using the arrows or inclination) to see what happens in the section: the thickness remains constant and 'error does not occur.
Now try to get the same angle through the modification of the child elements of the roof (points, fill, etc. ..): Revit will probably notice a (and no error message) that I pointed out the possibility of small inaccuracies due to the inclination who took the roof.
Now if misuraste sectional thickness of the roof that you would notice is less than what you would expect. Why?
size corresponding to the thickness can be read perfectly on the vertical joining the extrados and the intrados of the roof, but this obviously is not the thickness of the roof.
To model a complex then it will cover should be used first to model a mass and then make the roof surface, or use the methodologies that are still in the manuals prior to the release of Revit 2008.
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