The walls between patient rooms have a 50 STC according to table 1.2-3 2010 FGI. However, our patient's rooms have been designed with NO doors. This is to provide easy and direct access for the nurses and doctors. Do we still have to meet the 45 STC isolation value?
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Susan Walter
HDRLEEDuser Expert
1299 thumbs up
May 12, 2014 - 3:14 pm
I'm not sure how you'll comply with the 35 STC required for patient room to corridor with your design situation. But I would say that you still need to follow the FGI unless your project is outside the USA and following a similar standard that you can get an ACP on from the USGBC.
The way I read the FGI table, you need 50 STC between patient room and the patient room above, 45 STC patient room to patient room (common wall) and 35 STC from the patient room to the corridor (common wall again). The 35 is measured with a closed door.
Gustavo De las Heras Izquierdo
LEED Expert181 thumbs up
May 12, 2014 - 4:59 pm
Thanks for your insight. Yes, the project is located outside the US and we will try to get the ACP from the USGBC.
I was wondering whether or not it is mandatory to have floor-to-floor walls in order to meet the isolation values stated in the table 1.2-3. It is quite difficult having floor-to-floor walls due to the amount of services crossing above the rooms.
Susan Walter
HDRLEEDuser Expert
1299 thumbs up
May 12, 2014 - 5:07 pm
It is pretty much the only way that will get you the STC levels they require. Teams have tried the layer on insulation over the top of wall but never works for very long. You could also look at increasing the ceiling STC to help. We've also had discussions about only taking one layer of gyp to the deck and the other one partial height. The problem is finding accurate testing. Most design teams try to keep the services in the corridors and poke through the corridor wall. Typically, you only find exhaust running across the patient rooms and maybe return air in the patient room.