What type of fastener is specified for sheathing edges on roof framing?

The correct answer is based on industry standards for roof framing and sheathing. In typical construction practices, 8d common nails are specifically recommended for fastening the edges of sheathing materials, such as plywood or oriented strand board (OSB), to roof framing.

The use of 8d common nails is favored because they provide the necessary length and holding power to ensure that the sheathing is securely attached to the rafters or trusses. The number "8d" indicates that the nail is 8-penny in size, which is about 2.5 inches long. This size is optimal for penetrating through both the sheathing and into the framing members adequately, ensuring a robust joint.

While other types of nails or different sizes may be used for roofing or sheathing, the 8d common nail strikes a balance between strength and ease of use, making it a standard choice in the industry for this particular application.