How many thickness tests on SFRM are required for an area of 9,100 square feet?

To determine the number of thickness tests required for sprayed fire-resistant material (SFRM) over a certain area, industry standards and best practices typically dictate a specific testing frequency based on the size of the area being covered.

In this case, the area in question is 9,100 square feet. Standards often recommend a systematic approach to testing, where the number of required thickness tests is calculated using a guideline or formula that correlates area size to the number of tests needed to ensure structural integrity and compliance.

For this area, the established practice indicates that approximately 10 thickness tests would be necessary to adequately assess the thickness and uniformity of the SFRM application. This quantity allows for sufficient data collection to confirm that the fireproofing material meets the required performance specifications while accounting for variations that can occur in application techniques.

The choice of 10 thickness tests represents a balance between obtaining a statistically valid sample size and practical considerations regarding testing logistics and resource allocation. It reflects an understanding of the need for thorough assessment in fireproofing treatments while remaining feasible in terms of execution on a project of this size.