How many total SFRM thickness measurements are taken on a joist?

In determining the total number of Spray-Applied Fire-Resistive Material (SFRM) thickness measurements taken on a joist, the correct answer is based on established standards and practices regarding fireproofing assessment. The requirement for thickness measurements often follows specific guidelines set forth by relevant codes or testing standards.

For a standard joist application, 14 total measurements are typically required. This is important to ensure a comprehensive evaluation of the fireproofing layer to effectively assess its uniformity and adequacy across the structure. This practice is crucial for verifying that the applied fireproofing meets the necessary performance criteria and provides sufficient protection against fire.

In summary, the total of 14 thickness measurements allows for a detailed quality control process, ensuring compliance with safety standards and enhancing the overall fire resistance of the joist assembly.