IAPMO UMC MPE Practice Questions - UMC Residential And Commercial Mechanical Plans Examiner (MPE) Exam

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A drawing labels a return-air space above a ceiling as a plenum. In plan review, the term plenum is most relevant because it affects:

Whether materials and wiring in the space must be suitable for use in an air-handling space Whether the building is exempt from ventilation requirements Whether the roof drainage system must be resized Whether fuel gas piping can be omitted

Correct Answer:

Whether materials and wiring in the space must be suitable for use in an air-handling space

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