Sentence 9.26.3.1.(2)

Intent 1:

To limit the probability of water ponding on roof surfaces for extended periods, which could lead to:

• water penetrating roofing membranes,
• accelerated weathering of roofing materials, or
• the roof's structural design loads being exceeded, which could lead to excessive deflection and further ponding.

This is to limit the probability of precipitation or meltwater ingress, which could lead to deterioration, which could lead to the structural failure of roofs or assemblies protected by roofs, which could lead to harm to persons.

Intent 2:

To expand the application of Sentence 9.26.3.1.(1) to allow lower slopes where drainage is provided.