Question 35

Nails used to fasten concrete roofing tiles must penetrate the deck a minimum of 3/4 inch.

To ensure adequate fastening of concrete roofing tiles, nails must penetrate the deck by at least 3/4 inch. This penetration depth is crucial for maintaining the structural integrity and durability of the roofing system.

A) 2 inches.

While a penetration depth of 2 inches may provide a very secure fastening, it exceeds the minimum requirement specified for concrete roofing tiles. Over-penetration can lead to unnecessary complications or damage to the underlying structure.

B) 1 inch.

A penetration depth of 1 inch is insufficient for fastening concrete roofing tiles. The minimum requirement is specifically set at 3/4 inch to ensure proper hold and resistance against weather conditions, making this option inadequate.

C) 3/4 inch.

This option meets the minimum requirement for nail penetration when fastening concrete roofing tiles to the deck. Adequate penetration at this depth ensures that the tiles remain securely in place while also allowing for proper water drainage.

D) 5/8 inch.

A penetration depth of 5/8 inch does not satisfy the minimum requirement necessary for fastening concrete roofing tiles. This insufficient depth may compromise the stability of the roofing system, especially under adverse weather conditions.

Conclusion

The requirement for nails to penetrate the deck a minimum of 3/4 inch is essential for ensuring the secure installation of concrete roofing tiles. While other penetration depths offer varying degrees of security, only 3/4 inch meets the established standard, making it the definitive correct answer. All other options either exceed the requirement or fail to provide adequate fastening, highlighting the importance of adhering to specified construction standards.