When verifying field thickness of intumescent fireproofing on steel, what is a common compliant approach?
Choices
- (A) Visual guessing only
- (B) Documented dry-film probes on a patterned grid vs approved system schedules
- (C) Member dead weight alone as proof
- (D) Dark paint colour as evidence
Correct answer: (B)
Documented dry-film probes on a patterned grid vs approved system schedules
Explanation
DFT gauges capture real build-up not appearance.