Massachusetts Unrestricted Construction Supervisor License Practice Test

What is the proper method of nailing collar ties to rafters?

1. 2 - 16d common nails

2. 3 - 10d common nails

3. 4 - 3" 14 gauge staples

4. Both B and C

The correct answer is: Both B and C

The proper method of nailing collar ties to rafters involves using a secure fastening technique to ensure structural integrity in the roof system. Options B and C highlight acceptable fastening methods that are commonly recognized in construction practices. Using three 10d common nails provides ample strength and resistance to withdrawal, which is crucial when connecting the collar ties to the rafters. This method ensures that the collar ties effectively help to prevent the rafters from spreading apart, maintaining the stability of the roof. Alternatively, utilizing four 3-inch 14-gauge staples is also a reliable method. Staples can quickly and effectively secure collar ties due to their holding strength and the surface area they cover when installed properly. This method is particularly useful in certain framing applications where speed and efficiency are favorable. Both methods are considered effective for this application, depending on the specific construction requirements and preferences. Therefore, the answer that acknowledges both fastening techniques as proper methods for nailing collar ties to rafters is indeed the best choice.