Hi to all:

We are certifying an existing 10 story core and shell office building, with up to 4 tenants per floor. It is not clear how many indoor air measurements (CO2 and TVOC) we should perform for the whole building: one air measurement per floor, one air measurement per tenant, several measurements per tenant? It is understood that the measurement should be in locations representative of all occupied spaces, but  I´d appreciate a clearer rule for this specific case.

Thank you very much.