General Norms & Details
Building Planning
Acoustic-Noise control
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Duct system components
guidelines for minimizing regenerated noise in duct tees
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guidelines for minimizing regenerated noise in elbows
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AN-guidelines for minimizing regenerated noise in takeoffs
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guidelines for minimizing regernated noise in transitions and offsets
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suggested maximum airflow velocities in elbows for rectangular ductwork
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the effect of installing a damper behind a grille
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the speaking tube (cross-talk) problem
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