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BUILDING <br />§ 5-85 <br />Wood framed and other <br />R-13 + R-3.8ci or R-20 <br />R-13 + R-3.8ci or R-20 <br />Walls, below grade <br />Below -grade wall <br />NR <br />NR <br />Floors <br />Mass <br />NR <br />NR <br />Joist/framing <br />NR <br />NR <br />Slab -on -grade floors <br />Unheated slabs <br />NR <br />NR <br />Heated slabs <br />R-7.5 for 12" below <br />R-7.5 for 12" below <br />Opaque doors <br />Nonswinging <br />R-4.75 <br />R-4.75 <br />For SI: 1 inch = 25.4 mm, 1 pound per square foot = 4.88 kg/m2, 1 pound per cubic foot = <br />16 kg/m3. <br />ci = Continuous insulation, NR = No requirement, LS = Liner system. <br />a. Assembly descriptions can be found in ANSI/ASHRAE/IESNA Appendix A. <br />b. Where using R -value compliance method, a thermal spacer block shall be provided, <br />otherwise use the U -factor compliance method in Table C402.1.4. <br />c. Cool roof is defined as a roof with three-year aged solar reflectance of 0.55 and 3 - <br />year aged thermal emittance of 0.75 or 3 -year aged solar reflectance index of 64. <br />d. R-5.7ci is allowed to be substituted with concrete block walls complying with ASTM <br />C 90, ungrouted or partially grouted at 32 inches or less on center vertically and 48 <br />inches or less on center horizontally, with ungrouted cores filled with materials <br />having maximum thermal conductivity of 0.44 Btu-in/h-f2 °F. See Section <br />C402.2.3." <br />(10) Subsection C402.2.3 of the International Energy Conservation Code is <br />amended to read as follows: <br />"C402.2.3 Thermal resistance of above -grade walls. The <br />minimum thermal resistance (R -value) of materials installed <br />in the wall cavity between framing members and <br />continuously on the walls shall be as specified in Table <br />C402.1.3, based on framing type and construction materials <br />used in the wall assembly. <br />5-113 SUPP. 8 (7-2020) <br />