How to calculate OTTV with Sefaira simulation results?

How do I derive the OTTV value from Sefaira simulation results?

@chinhaw.lim, it has been a really long time since I came across the OTTV calcs. So please take my advice here with a grain of salt.

You might be able to calculate the OTTV value through the Sefaira plugin. Assuming you are using the equation below for both the walls and the roof (Separate but similar equation).

You should be able to get all the information you need from the Sankey diagram in the plugin and the SketchUp model for the area of the walls/roof.


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