Article 513 applies to buildings or structures that contain Class I or Class II liquids and where aircraft might undergo service, repair or alteration.
Any pit or depression below the level of an aircraft hangar floor shall be classified as a _____ location that extends up to said floor level.
a) Class I, Division 1
b) Class I, Division 2
c) Class II, Division 1
d) Class III
See answer and applicable Code reference
The correct answer is: a) Class I, Division 1
Article 513 applies to buildings or structures that contain Class I or Class II liquids and where aircraft might undergo service, repair or alteration. As per 513.3(A), "Any pit or depression below the level of the hangar floor shall be classified as a Class I, Division 1 or Zone 1 location that shall extend up to said floor level."
About the Author
Mike Holt
Mike Holt is the owner of Mike Holt Enterprises (www.MikeHolt.com), one of the largest electrical publishers in the United States. He earned a master's degree in the Business Administration Program (MBA) from the University of Miami. He earned his reputation as a National Electrical Code (NEC) expert by working his way up through the electrical trade. Formally a construction editor for two different trade publications, Mike started his career as an apprentice electrician and eventually became a master electrician, an electrical inspector, a contractor, and an educator. Mike has taught more than 1,000 classes on 30 different electrical-related subjects — ranging from alarm installations to exam preparation and voltage drop calculations. He continues to produce seminars, videos, books, and online training for the trade as well as contribute monthly Code content to EC&M magazine.
