# NCARB ARE Handbook Formula - Uo

Can anyone explain why the second formula Uo for Roofs/Skylights says that o = total wall? seems like it's talking about the roof, no?

It's highly likely that I'm way off here.

Thanks

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Can anyone explain why the second formula Uo for Roofs/Skylights says that o = total wall? seems like it's talking about the roof, no?

It's highly likely that I'm way off here.

Thanks

Post is closed for comments.

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