What is the maximum thickness determination you can record if the required thickness is 50 mils?

The maximum thickness determination one can record when the required thickness is specified as 50 mils is 50 mils. This means that the material applied must meet this exact thickness for effective fire resistance and compliance with safety codes.

Recording a thickness greater than the specified 50 mils, such as 55 mils, 60 mils, or 65 mils, is not appropriate, as it exceeds the specified requirement. This could potentially compromise the performance of the fireproofing material, lead to issues with inspection standards, and result in non-compliance with building codes. Therefore, the correct answer underscores the importance of adhering to prescribed specifications in fireproofing applications.