9330 4TH AVE SE 2014 Plans 2022-11-22

Table R402.1.1 Footnotes For SI: 1 foot = 304.8 mm, ci .=mntinuous insulation,int .=intermediate framing. ' R-values are minimums. U-factors and SHGC are maximums. When insulation is installed in a cavity which is less than the label ordesign thickness of the insulation,the mmpressed R-value ofthe insulation from Appendix Table A101.4 shall not be less than the R-value specified in the table. °The fenestration U-factor mlumn exdudes skylights.The SHGC mlumn applies to all glazed fenestration. Exception: Skylights may be exduded from glazed fenestration SHGC requirements in Climate Zones 1 through 3 where the SHGC for such skylights does not exceed 030. "'10/15/21.+TB" means R-10 mntinuous insulation on the exterior of the wall, or R-15 on the mntinuous insulation on the interior of the wall, or R-21 cavity insulation plus a thermal break between the slab and the basement wall at the interior of the basement wall. "10/15/21+TB" shall be permitted to be met with R-13 cavity insulation on the interiorofthe basementwall plus R-5 mntinuous insulation on the interior or exterior of the wall."10/13" means R-10 mntinuous insulation on the interior or exterior of the home or R- 13 cavity insulation atthe interior of the basement wall."TB" meansthermal break between floorslab and basement wall. °R-10 mntinuous insulation is required under heated slab on grade floors.See R4021.9.1. eThere are no SHGC requirements in the Marine Zone. f Basement wall insulation is not required in warm-humid locations as defined by Figure R301.1 and Table R301.1. e Reserved- ° First value is cavity insulation, semnd is mntinuous insulation or insulated siding, so"13.+5" means R-13 cavity insulation plus R-5 mntinuous insulation or insulated siding. If structural sheathing mvers 40 percent or less of the exterior, mntinuous insulation R-value shall be permitted to be reduced by no more than R3 in the locations where structural sheathing is used to maintain a mnsistent total sheathingthickness. �The semnd R-value applies when more than halfthe insulation is on the interiorofthe mass wall. � Forsingle rafter- orjoist-vaulted ceilings,the insulation may be reduced to R38. � Int (intermediate framing) denotes standard framing 16 inches on centerwith headers insulated with a minimum of R-10 insulation. � Log and solid timber walls with a minimum average thickness of 3.5 inches are exempt from this insulation requirement. Table R402.1.3 Footnote ' Nonfenestration U-factors shall be obtained from measurement, calculation oran approved source oras specified in Section R402.13.