Coastal and Floodplain Construction Inspector's Practice Exam

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What is the appropriate fastener spacing for sheathing edges on roof framing?

4" o.c.
6" o.c.
8" o.c.
10" o.c.

The correct answer is: 6" o.c.

The correct answer for the appropriate fastener spacing for sheathing edges on roof framing is 6 inches on center (o.c.). This spacing ensures that the sheathing is securely attached to the underlying framing, which is essential for maintaining the structural integrity of the roof system. Using 6 inches on center for fasteners allows for adequate support, helps to prevent sagging or movement of the sheathing under wind loads or snow loads, and minimizes the risk of the sheathing detaching over time. It is particularly important in coastal and floodplain areas where structures may be subjected to more extreme weather conditions. While the other options suggest spacing that is either too rare or too close, they may not provide the optimal balance of strength and efficiency needed for roof sheathing in these environments. This makes 6 inches on center the standard choice for securing sheathing edges effectively, ensuring that the roofing system performs as designed.