Intent 1:
To exempt from the application of Articles 9.19.1.1. to 9.19.1.3., roof configurations where:
- heat and moisture transfer into or out of the space
(caused by air pressure differences across the building envelope induced
by stack effect) is reduced because the lower portion of the roof
is close to the neutral pressure plane, and
- the likelihood of snow accumulation and ice damming
is limited.