Massachusetts Unrestricted Construction Supervisor License Practice Test

What is the minimum required depth of fireplace fireblocking between wood joists, beams, or headers?

1. 1/2 inch

2. 1 inch

3. 1.5 inches

4. 2 inches

The correct answer is: 1 inch

The minimum required depth of fireplace fireblocking between wood joists, beams, or headers is set at 1 inch. This requirement is in place to help prevent the spread of fire from the fireplace to the structure of the building, ensuring that there is a barrier that can slow down or contain any potential fire hazards that may arise from the fireplace itself. Fireblocking is essential for maintaining the integrity of the building’s fire safety systems, as it provides a measure of protection against flames and heat in vertical spaces where fire could potentially travel. The specific requirement of 1 inch not only meets safety standards but also balances practicality in construction, allowing adequate space for framing while ensuring effectiveness in fire containment. Proper installation of fireblocking can be a critical aspect of safeguarding a structure and should always be adhered to in compliance with building codes and regulations.