Red Seal Carpenter Complete Practice Exam 2026

Installing exterior plywood wall sheeting with the long dimension at a right angle to the studs is crucial for structural integrity and performance. This orientation enhances the sheeting's resistance to wind loads and contributes to the overall rigidity of the wall assembly. When the long edge of the plywood runs perpendicular to the framing members (the studs), it allows for proper load distribution and minimizes the potential for buckling or warping under stress.

Additionally, this method promotes better attachment to the framing, ensuring that the fasteners penetrate the studs adequately. It also helps in creating a continuous surface that contributes to the building envelope, preventing moisture infiltration and improving insulation performance.

Using this orientation helps avoid potential issues with seams, as it allows for better alignment and support of joints where sheets meet. This is particularly important in maintaining the structural characteristics of the wall, especially in high-wind areas or in applications where lateral stability is a concern.