TFIFRM thickness tests must be performed when TFIFRM has stabilized. Which option correctly reflects this timing?

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Multiple Choice

TFIFRM thickness tests must be performed when TFIFRM has stabilized. Which option correctly reflects this timing?

Thickness measurements must be taken once the TFIFRM has reached a stable thickness. While the material is curing or drying, it continues to change as solvents evaporate and chemical set occurs, so any reading would not reflect the final installed thickness. Waiting until stabilization ensures the measured value represents the true, final thickness that the design requires and that the fireproofing system is intended to provide. In practice, refer to the product data for the recommended stabilization time under the site conditions, then perform the test after that period.

Thickness measurements must be taken once the TFIFRM has reached a stable thickness. While the material is curing or drying, it continues to change as solvents evaporate and chemical set occurs, so any reading would not reflect the final installed thickness. Waiting until stabilization ensures the measured value represents the true, final thickness that the design requires and that the fireproofing system is intended to provide. In practice, refer to the product data for the recommended stabilization time under the site conditions, then perform the test after that period.

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