How many density tests are required per 10,000 ft²?

The correct answer indicates that only one density test is required for every 10,000 square feet of the spray-applied fireproofing material. This standard is established to ensure that the application meets specified material density requirements, which are crucial for effective fire resistance.

Maintaining the proper density is vital, as it directly impacts the fireproofing material’s performance and its ability to provide adequate thermal insulation and structural protection. Conducting a single test for every 10,000 square feet helps streamline the process while ensuring compliance with safety standards.

The other options suggest a higher number of tests, which may lead to unnecessary duplication of effort without providing significant additional value in maintaining quality assurance if the application is consistent and within acceptable performance metrics.