Question

1. which factor is least likely contribute to sagging sheathing? the thickness of the sheathing the number of nails holding the sheathing to the roof framing the orientation of the grain (e.g. on plywood sheathing) the distance between the rafters or trusses the weight of the load on the sheathing

Explanation:

To determine the least likely factor for sagging sheathing, we analyze each option:

• Thickness of sheathing: Thicker sheathing resists sagging, so thickness impacts sagging.
• Number of nails: More nails secure sheathing better, reducing sagging—so nail count matters.
• Grain orientation (plywood): Plywood grain orientation affects structural integrity; improper orientation can increase sagging risk.
• Rafter/truss distance: Wider spacing reduces support, increasing sagging—so spacing matters.
• Weight of load: Heavier loads increase sagging forces.

Among these, grain orientation (e.g., in plywood) is least directly linked to sagging compared to the others. While grain orientation affects plywood strength, the other factors (thickness, nail count, rafter spacing, load weight) have more direct, measurable impacts on sagging.

Answer:

The orientation of the grain (e.g. on plywood sheathing)