CBC Elevator Cab

Section 2.14.2.1.5 of ASME A17.1 indicates that floor coverings must have a critical radiant flux of not less than 0.45 W/cm^2 per ASTM E 648, which is considered "Class I."

However, the IBC references NFPA 253. My understanding, though, is that both of these standards are nearly identical and use the same testing apparatus.
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