Chapter 05E Energy Conservation Code

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E NERGY C ONSERVATION C ODE§5E-2-1 (37) Subsection R402.2 of the International Energy Conservation Code is amended to read as follows: “R402.2 Specific insulation requirements (Prescriptive). In addition to the requirements of Section R402.1, insulation shall meet the specific requirements of Sections R402.2.1 through R402.2.13. Exception: Above-grade walls and ceilings shall be permitted to comply with Section R407.” (38) Subsection R402.2.5 of the International Energy Conservation Code is amended to read as follows: “R402.2.5 Mass walls. Mass walls for the purposes of this chapter shall be considered above-grade walls of concrete block, concrete, insulated concrete form (ICF), masonry cavity, brick (other than brick veneer), earth (adobe, compressed earth block, rammed earth) and solid timber/logs, or any other walls having a heat capacity greater 22 x °F (123 kJ/m x K). than or equal to 6 Btu/ft Exception: Insulation or R-value for mass walls, indicated in Table R402.1.2, is not required when at least one of the following conditions is met: 1. 2. Walls have overhangs with a projection factor equal to or greater than 0.3. The projection factor is the horizontal distance from the surface of the wall to the farthest most point of the overhang divided by the vertical distance from the first floor level to the bottom most point of the overhang. 3. Concrete, CMU, and similar mass walls are 6 inches or greater in thickness.” (39) Subsection R402.3.2 of the International Energy Conservation Code is amended to read as follows: “R402.3.2 Glazed fenestration SHGC. Fenestration shall have a maximum solar heat gain coefficient as specified in Table R402.1.2. An area-weighted average of fenestration products more than 50- percent glazed shall be permitted to satisfy the SHGC requirements. Exceptions: 1. Jalousie windows are exempt from SHGC requirements. SUPP. 9 (1-2021) 5E-19