Which statement about CAC is true?

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Prepare for the Interior Design Implementation (IDIX) 2 Exam. Enhance your skills with flashcards and multiple choice questions, each with detailed explanations. Ace your test with expert tips and insights!

Multiple Choice

Which statement about CAC is true?

Explanation:
CAC, or Ceiling Attenuation Class, measures how well a ceiling assembly reduces airborne sound transmission between spaces that share a plenum above the ceiling. In practical terms, a higher CAC means better isolation of noise from one room to the adjacent room across the ceiling plenum. It specifically targets transmission, not how much sound a material absorbs inside a room, which is described by the absorption coefficient. It also isn’t about fire resistance ratings or humidity control in the plenum. So CAC is the measure of the ceiling’s ability to cut sound transfer between rooms connected by a shared plenum.

CAC, or Ceiling Attenuation Class, measures how well a ceiling assembly reduces airborne sound transmission between spaces that share a plenum above the ceiling. In practical terms, a higher CAC means better isolation of noise from one room to the adjacent room across the ceiling plenum. It specifically targets transmission, not how much sound a material absorbs inside a room, which is described by the absorption coefficient. It also isn’t about fire resistance ratings or humidity control in the plenum. So CAC is the measure of the ceiling’s ability to cut sound transfer between rooms connected by a shared plenum.

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