Coastal and Floodplain Construction Inspector's Practice Exam

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What is the maximum spacing for ladder framing at gable ends?

12" on center
6" on center
4" on center
2" on center

The correct answer is: 4" on center

Ladder framing at gable ends is designed to provide adequate support and structural integrity for the roofing system. The maximum spacing for ladder framing in this context is established to ensure that the roof sheathing is securely fastened and can efficiently bear any loads, including wind and snow. The reasoning behind a maximum spacing of 4 inches on center is to enhance the structural rigidity of the roof, which is crucial at the more vulnerable gable ends where forces such as uplift and lateral loads can be significant. Closer spacing limits potential deflection and movement, providing a stable surface for attaching the roofing material and reducing the risk of sagging or failure. In contrast, spacing options that are greater than 4 inches on center do not provide the necessary support and could lead to inadequate fastening of the sheathing, compromising the overall performance of the roof structure under various environmental conditions.