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5 * STAR CITY HOTEL -GUESTROOM ACOUSTIC CONTROLS

Acoustic Control

Acoustic performance of walls, floors and equipment is subject to many variables. Consultation with a qualified acoustic consultant, a member of the National Council of Acoustical
Consultants, is highly recommended.
Construction Criteria: Provide interior wall, floor / ceiling construction to achieve the following minimum Sound Transmission Classification (STC) and Impact Insulation Class (IIC):

50 STC between Guest Rooms (Field Test).

45 STC between Guest Rooms and corridors (Field Test).

Space Min. STC
NC
 
Guestroom party walls in masonry
50+
Guestroom party walls in gypsum on stud system
55+

Guestroom shaft and chase walls at bath
50+
Guestroom elevator shaft walls
50+
Guestroom corridor walls
48+
Floor / ceiling construction - concrete
50+
Floor / ceiling construction - wood frame system
55+
Guestroom floor to ceiling
55+
 
 

Construction Details: Ensure that acoustic construction details for required rated assemblies are met.

These details, typically include the following:

• In stud framing, setting the toe of perimeter (base, wall and head) framing members in continuous sealant.

• Following recommended product manufacturer’s acoustic control details, etc.

• Sealing the perimeter of wall where it meets other surfaces.
• Offsetting and sealing electrical receptacle boxes in party walls.

• Designs that mitigate plumbing and mechanical generated noise above ceilings and in chases.

• Spacing of HVAC supply and return grills to prevent noise migration from guestroom to guestroom; providing sound and acoustic baffles in ductwork.

Door / Frame Details: Provide construction to achieve acoustic rating of adjoining wall as noted above.

• Fill hollow frames solid with fiber insulation. Include door perimeter seals and door bottom seals at connector doors. • Provide thresholds for positive door seal contact (entry and connector doors).
• Do not undercut doors to allow return air if it circumvents the sound isolation objectives noted above.

Acoustic Wall Drawings
http://www.iklimnet.com/expert_hvac/sound_reduction.html
 
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