How many trusses must individual pieces of sheathing be attached to at a minimum?

The correct minimum number of trusses that individual pieces of sheathing must be attached to is three. This requirement helps ensure structural integrity and stability of the roofing system. By anchoring the sheathing to multiple trusses, it creates a more robust connection that can better withstand various loads and stresses, such as wind and snow.

Attaching sheathing to just one or two trusses could lead to insufficient support, potentially causing the sheathing to warp or fail under load. The design principle behind this guideline is to distribute the stress across multiple supports and reduce the likelihood of buckling or failure over time. This is particularly important in residential constructions in North Carolina, where building codes are enforced to ensure safety and durability. Thus, adhering to the requirement of attaching sheathing to a minimum of three trusses enhances the overall performance and lifespan of the roofing system.