Sentence 9.23.14.8.(1)

Intent 1:

To limit the probability of inadequate ridge support, which could lead to an inability to resist expected gravity loads, which could lead to the lower ends of rafters or joists moving outward, which could lead to:

• the failure of roof rafters or joists, or supporting walls, or
• the excessive deflection of roof rafters or joists.

Where assemblies are required to provide fire resistance, this is to limit the probability of compromised fire resistance of the assembly, which could lead to harm to persons.