675 IAC 14-4.4-103 Table N1105.5.2(1); specifications for the standard reference and proposed designs

Sec. 103. Change the STANDARD REFERENCE DESIGN specifications for AIR EXCHANGE RATE in TABLE N1105.5.2(1) to read as follows: BUILDING COMPONENT STANDARD REFERENCE DESIGN PROPOSED DESIGN Air exchange rate The air leakage rate at a pressure of 0.2 inch w.g. (50 Pa) shall be 5 air changes per hour. The mechanical ventilation rate shall be in addition to the air leakage rate and shall be the same as in the proposed design, but not greater than 0.01 x CFA + 7.5 x (Nbr + 1) where: CFA = conditioned floor area, ft2. Nbr = number of bedrooms. Energy recovery shall not be assumed for mechanical ventilation. The measured air exchange ratea. The mechanical ventilation rateb shall be in addition to the air leakage rate and shall be as proposed.