This Blog is dedicated to all things to do with Building Information Modeling.
I'll be blogging about challenges that I come across as BIM Manager as well as points of interest that are related to BIM. Blogs on tips and technical "How-too's" to help you out with creating your BIM models correctly.
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Monday, 15 April 2013
Solar Study - Floor plan doesn't show correctly...
Just came across this issue in one of our offices. Were trying to show how shadows are cast in a public space of one of our buildings were working on. what we found was that the shadows on the floor plan don't exactly match the shadows that we see cast in the camera view.
Shadow Plan View
Shadow Camera View
Seemed like the right thing to do, show the floor plan shadows and the camera view shadows together to clearly indicate the impact of day-lighting for the space.
Well the floor plan will never show the correct shadows.. I believe Revit is treating anything above the "view cut plane" as not existing, hence letting the daylight in as if the walls stop 3' off the ground. Not a true representation of a plan view of the day-lighting condition in that place.
To truly represent the shadow study I recommended that we use a 3D view showing the position/path of the sun, turn off the shadows in the plan view and only use the plan view as a indication of where the camera views are located then use the camera view to show the actual shadows within the room.