SOUND TRANSMISSION LIMITATIONS IN HOSPITALS
|NEW CONSTRUCTION||AIRBORNE SOUND TRANSMISSION CLASS (STC)1|
|Patient room to patient room||45||40|
|Public space to patient room3||55||40|
|Service areas to patient room4||65||45|
|Patient room access corridor5||45||45|
|Exam room to exam room||45|
|Exam room to public space||45|
|Toilet room to public space||45|
|Consultation rooms/conference rooms to public space||45|
|Consultation rooms/conference rooms to patient rooms||45|
|Staff lounges to patient rooms||45|
- Sound Transmission Class (STC) shall be determined by tests in accordance with methods set forth in ASTM 90 and ASTM 413. Where partitions do not extend to the structure above, sound transmission through ceilings and composite STC performance shall be considered.
- Treatment rooms shall be treated the same as patient rooms.
- Public space includes corridors (except patient room access corridors), lobbies, dining rooms, recreation rooms, and similar space.
- Service areas for the purposes of this table include kitchens, elevators, elevator machine rooms, laundries, garages, maintenance rooms, boiler and mechanical equipment rooms, and similar spaces of high noise. Mechanical equipment located on the same floor or above patient rooms, offices, nurses stations, and similar occupied space shall be effectively isolated from the floor.
- Patient room access corridors contain composite walls with doors/ windows and have direct access to patient rooms.
- Renovation projects of existing spaces where the existing function is not changed, are not required to comply with the requirements of Table 1224.5.
Recreation rooms, exercise rooms, equipment rooms and similar spaces where impact noises may be generated, shall not be located directly over patient bed areas or delivery and operating suites, unless special provisions are made to minimize such noise.