What is the minimum number of thickness checks required per inspection shift for TFIFRM?

The minimum number of thickness checks required per inspection shift for TFIFRM (Thermal Fireproofing Insulation Finish for Reinforced Metal Deck) is established to ensure consistent quality and compliance with fireproofing standards. Performing three thickness checks per shift allows for a comprehensive assessment of the application process, catching any potential inconsistencies or variations in thickness that could compromise fire resistance.

This requirement is crucial because the effectiveness of spray-applied fireproofing is highly dependent on achieving the specified thickness. Adequate checks prevent the risk of applying insufficient material, which could lead to structural vulnerabilities in case of a fire. By conducting multiple thickness checks, inspectors can ensure that the application meets the necessary fire resistance criteria.

Having fewer checks may not provide sufficient oversight to identify issues that may arise during the application, whereas increasing the checks beyond three could impose unnecessary burdens without significantly increasing quality assurance. Thus, three is the balanced number that ensures thoroughness while maintaining practicality in inspection processes.