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Interior wall and ceiling finishes shall be classified in accordance with which standards?

A. ASTM E84
B. UL 723
C. Both ASTM E84 and UL 723
D. None of the above

Answer :

Final answer:

Interior wall and ceiling finishes are classified using ASTM E84 and UL 723 standards to determine their fire performance and flame spread index.

Explanation:

The classification of interior wall and ceiling finishes is determined in accordance with ASTM E84 and UL 723 standards. These standards assess the fire performance and flame spread index of materials used for finishes. ASTM E84 measures the surface burning characteristics of materials, while UL 723 evaluates the fire and smoke characteristics.

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