Sound Transmission Class (STC) Quiz
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Questions and Answers

What does the STC rating reflect?

  • The thickness of the partition
  • The color of the partition
  • The decibel reduction of noise provided by a partition (correct)
  • The type of materials used in a partition

    • Which index is used outside the US to rate sound reduction?

  • ASRM E90
  • ASTM E413
  • STC
  • ISO Sound Reduction Index (SRI) (correct)

    • What are the two most basic principles to improve the sound transmission class of a partition?

  • Adding decorations and reducing overall size
  • Increasing color contrast and adding windows
  • Adding mass and increasing overall thickness (correct)
  • Reducing mass and decreasing overall thickness

    • What does a higher number in STC indicate?

    <p>More effective sound insulation</p> Signup and view all the answers

    What does the STC provide a standardized way to compare?

    <p>Products made by competing manufacturers</p> Signup and view all the answers

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