Sound Diffusion Surfaces and Mechanical Noise Control

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Questions and Answers

What type of joint is required between the mechanical room and critical spaces if full acoustic separation cannot be achieved?

  • Isolation joint
  • Construction joint
  • Expansion joint
  • Acoustic separation joint (correct)

Why should a lightweight roof deck not span continuously between a mechanical room and a sound-critical space?

  • To prevent sound or vibration transmission (correct)
  • To prevent air from escaping
  • To allow for natural light
  • To reduce construction costs

What should be done to shaft walls adjacent to quiet areas in terms of their construction?

  • They should be fully soundproofed
  • They should be made of medium to heavy weight masonry (correct)
  • They should be made of lightweight materials
  • They should have large openings

What design feature is recommended for ductwork passing through different spaces on its way to a sound-critical space?

<p>Sealed connections to prevent direct openings (B)</p> Signup and view all the answers

Which of the following is advised regarding fresh-air intake and exhaust-air discharge openings in relation to critical outdoor areas?

<p>They should not lead to critical outdoor areas (D)</p> Signup and view all the answers

What is one important consideration when designing ductwork for sound-critical spaces?

<p>Preventing noise from breaking in or out (B)</p> Signup and view all the answers

What is a recommended maximum trunk duct velocity for effective noise control in performance spaces?

<p>$1000$ FPM (B)</p> Signup and view all the answers

In very critical cases, mechanical room doors may require:

<p>Acoustical seals or sound-rated acoustical doors (C)</p> Signup and view all the answers

What type of wall construction is generally recommended for shaft walls adjacent to quiet areas?

<p>Heavy weight masonry (D)</p> Signup and view all the answers

What should be done with fresh-air intake and exhaust-air discharge openings?

<p>Not lead to critical outdoor areas or locations where noise can re-enter the building (B)</p> Signup and view all the answers

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