General Norms & Details
Building Planning
Acoustic-Noise control
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Duct chases, shafts, enclosures, laggings
acoustical comparison of several duct chase,shaft, and enclosure constructions
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duct and pipe penetrations through walls
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noise control duct enclosure
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plan view of return air shaft with supply duct takeoffs obstructing return airflow
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sealing pipe penetrations for sound isolation
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two typical duct laggings
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