North Carolina Building Contractor License Practice Exam

What can floor sleepers, bucks, and nailing blocks not be constructed from?

1. Non-combustible materials

2. Combustible materials

3. Wood materials

4. Minimum thickness materials

The correct answer is: Combustible materials

Floor sleepers, bucks, and nailing blocks are structural components used in construction to provide support and stability to various structures, particularly in framing. The correct answer indicates that these elements should not be constructed from combustible materials, meaning materials that can easily catch fire and contribute to the spread of flames. Using non-combustible materials for these components is critical for fire safety and building integrity. Non-combustible materials include concrete, masonry, and certain metals that do not ignite or sustain combustion. This choice helps to enhance the fire resistance of a structure, thereby protecting its occupants and minimizing damage in the event of a fire. Combustible materials, which could include many types of wood and other organic substances, pose a significant fire risk. They can ignite and allow flames to move rapidly through a building, leading to increased damage and danger. While wood materials could be seen in conjunction with local building codes and practices, the focus here is on ensuring fire safety with the use of non-combustible products. When it comes to minimum thickness materials, while they certainly have specifications to meet certain structural standards, they are not inherently unsafe from a fire perspective like combustible materials are. Thus, selecting non-combustible materials is the critical takeaway regarding the