Surgical suite design, fairfax, virginia, USA

[onlinetips]

Suite has various spaces:

1. Exam Rooms.
2. Fusion Room.
3. Pre-op Room.
4. Post-op Room.
5. 3 Procedure Rooms.
6. Instrument Processing Room.
7. Medical gas Room.

One RTU will serve entire floor with all spaces. Suite is for 'Gastroentrology' endoscopy.
Exam Room, Fusion Room, Pre-op and Post op rooms will be supplied with conditioned air and code required OA.
Return air will be through plenum.

3 Procedure rooms will be supplied with 20 ACH of supply air and 4 ACH of OA. The rooms will be kept at negative pressure.
Return air can be ducted back to RTU. Or transfer ducts to corridor plenum. Which is preferred/required of two?
Should we put barometric dampers on transfer ducts? Is there a requirement to route the return duct to one foot above floor level?

The instrument room will be supplied with conditioned air to meet load and then return will be direct exhaust to the outside. EA will be 20% more than SA to maintain negative pressure. Can the EA be tied to toilet exhaust riser?

The gas room will have 1 hour rated walls. The room will be exhausted directly to the outside with code require EA. Can the EA duct from the gas room tied to toilet riser? If the instrument room EA and gas room EA cannot be tied to toilet EA, do they need to be on separate fans of their own? combined or separate?

Procedure rooms have filter requirement of MERV-14. Do the Fusion, pre-op and post op rooms need to be MERV-14?
Can the MERV-14 filters be installed in RTU? If MERV-14 filters are only required for Procedure rooms, can they be on a dedicated fan with filters, so the remaining floor only uses MERV-8 filters?

 

[willard3]

Most of these answers will be in your state hospital code.