A column requires a mil thickness of 65 mils for TFIFRM. What is the lowest allowable mil thickness for an individual thickness determination?

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Multiple Choice

A column requires a mil thickness of 65 mils for TFIFRM. What is the lowest allowable mil thickness for an individual thickness determination?

The test uses a common thickness-tolerance rule: an individual thickness reading must be at least a certain percentage of the required thickness. Here, that minimum is 80% of the required 65 mils. Calculating 65 × 0.80 gives 52 mils. So an individual thickness determination must be at least 52 mils to satisfy the requirement. Readings lower than 52 would be below tolerance, while 52 or more would be acceptable. The other options fall below or not meet that 80% threshold.

The test uses a common thickness-tolerance rule: an individual thickness reading must be at least a certain percentage of the required thickness. Here, that minimum is 80% of the required 65 mils. Calculating 65 × 0.80 gives 52 mils. So an individual thickness determination must be at least 52 mils to satisfy the requirement. Readings lower than 52 would be below tolerance, while 52 or more would be acceptable. The other options fall below or not meet that 80% threshold.

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