How many density tests are required for a 17,000 ft² floor?

For a 17,000 square foot floor, the requirement for density tests typically follows guidelines established by codes and standards related to spray-applied fireproofing. Generally, the rule of thumb is to conduct density tests at intervals based on the area covered, ensuring that the fireproofing material meets the necessary specifications for performance and safety.

In this case, having specified that two density tests are required for this size floor is grounded in the standards that aim to ensure adequate representative sampling of the application. It reflects best practices in quality control, helping to verify the uniformity and effectiveness of the fireproofing across substantial areas, which is essential for fire safety compliance.

Specifically, the choice of two tests balances the need for thoroughness in assessing material consistency with practical considerations of testing frequency for larger spaces. Conducting just one test would not provide enough data to represent the entire area reliably, while going beyond two might unnecessarily complicate the testing process without significantly enhancing the reliability of the results.