220
The Service Module: Service Zone
224.5
Every precaution should be taken in design and construction to restrict
sound transference into the functional zone.
All openings through the shear wall must be closed around the service
mains to provide fire security, but the seal should also provide acoustic
separation. All openings through the ceiling subsystem for services
should be sealed as well. Mufflers may be required where return air boots
are used with an exhaust/return plenum HVC system.
Noise generating plumbing should be suspended on isolating devices and
precautions should be taken in services layout to prevent noise
transmission between service runs causing secondary sound paths to the
functional zone.
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