Our credit interpretation request is focused on the portion of the credit regarding indoor air quality where chemical use occurs - specifically laboratory rooms with fume hoods. We are concerned with the air quality of our employees and are taking the following measures to ensure that there is chemical-use separation between the laboratories with fume hoods and the adjacent rooms. We are proposing this design solution in lieu of gypsum board wall separations from floor to underside of structure above. The following is the design criteria for each laboratory room with a fume hood: 1. Each room will have a demountable lab wall system which has been tested and approved for Clean Room Class 10,000/ISO 7, gasketed at floor and ceiling (ceiling is at 9
The requirements are specific to performance, not to a particular type of wall construction. The credit is achievable if the team can document that the relevant rooms provide: separate outside exhaust at a rate of at least 0.50 cubic feet per minute per square foot; no air re-circulation; and negative pressure of at least 7 PA (0.03 inches of water gauge). Applicable internationally.