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What procedure is used to prevent sound transmission between suites in a multi-family dwelling?

Install resilient channels between the stud and wall finish and add acoustic insulation.

Explanation The correct answer is A because installing resilient channels between the stud and wall finish, along with adding acoustic insulation, is an effective procedure for reducing sound transmission between suites. Option B is incorrect because leaving a 1" air space between the exterior sheathing and wall cladding does not provide sufficient soundproofing. Option C is incorrect because expanded foam can still allow sound to pass through if there are gaps in the insulation. Option D is incorrect because while low density gypsum can dampen sound, it is not as effective as adding resilient channels and acoustic insulation. In summary, option A is the best choice as it combines both resilient channels and acoustic insulation for optimal soundproofing.

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By leaving a 1" air space between the exterior sheathing and the wall cladding.

By using expanded foam to insure that there are no gaps for the sound to pass thru.

By using a low density gypsum to dampen the sound and add acoustic insulation.

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