The default for calculation is standard.
How to determine area for roof in revit.
While it is possible to estimate the amount of necessary materials using only the total roof area measurement as can be seen from the table depending how large the pitch of the roof the actual area of the roof can differ by up to 2 236 from the measured total area at a pitch of 24 12.
Click quantification tab areabook extension panel calculate areas.
To create a hip roof 4 side slope define slope for all boundaries.
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Calculate areas in a project.
Take the area of the roof s footprint say it s 5 000 square feet and multiply 5 000 by 1 118.
That gives you 5 590 square feet which is the actual area of the surface of the roof.
In the calculate areas dialog specify the calculation type.
This applies to lengths as well as areas.
And that s the number you were looking for.
If slope is active for boundary lines a triangle symbol will appear next to them.
Click duplicate this type to create a new type with different parameters for future use.
In the option bar make sure defines slope is activated for boundary lines.
With 3d mep autocad or revit increasing in popularity it should be not difficult to determine the correct projected area for sizing the rainwater system the roof drains leaders gutters downspouts and horizontal piping.
Visit revit products forum.