When rafters are spaced at 24" O.C, how close must they bear to the studs beneath?

In construction, especially regarding roof framing, the spacing of rafters and their bearing on supporting walls or studs is critical for maintaining structural integrity and load distribution. When rafters are spaced at 24 inches on center, the design typically allows for certain bearing requirements to ensure that the rafters effectively transfer loads down to the walls or studs.

The correct answer indicates that when rafters are set at this spacing, they must bear within 5 inches of the supporting studs beneath. This proximity ensures that the load is adequately supported by the studs, minimizing the risk of stress or sagging that could arise from inadequate support. Additionally, it falls within the generally accepted construction practices that promote safety and durability. This balance between spacing and proper bearing locations is essential for avoiding structural failures, ensuring that the roof system functions as intended under various load conditions.

Understanding this concept helps in grasping the relationship between rafter spacing and load-bearing capabilities, which is a fundamental aspect of building codes and structural engineering.