306 94TH PL SE 2015 Plans 2022-11-22

Table R402.1.1 Footnotes For SI: 1 foot .=304.8 mm, ci .= mntinuous insulation, int.=intermediate framing. � 'R-,alues are minimums. U-factors and SH6C are maximums. When insulation is installed in a cavitywhich is less than the label or designthickness of the insulation,the mmpressed R-value of the insulation from Appendix Table A101.4shall not be lessthanthe R-value specified inthe table. °The fenestration U-factor mlumn exdudes skylights.The SH6C mlumn applies to all glazed fenestration. Exception: Skylights may be exduded from glazed fenestration SH6C 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.+T6" shall be permitted to be met with R-13 cavity insulation on the interior of the basement wall 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 ofthe basement wall. "TB" means thermal break betweenfloorslab and basement wall. ° R-10 mntinuous insulation is required under heated slab on grade floors.See R4022.9.1. e There are no SH6C requirements in the Marine Zone. �Basement wall insulation is not required in warm-humid locations as defined by Figure R30L1 and Table R301.1. gReserved. ° 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 covers 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 sheathing thickness. �The semnd R-value applies when more than halfthe insulation ison the interior ofthe mass wall. � Forsingle rafter-orjoisrivaWted ceilings,the insulation may be reduced to R-38. �InL (inlermediate framing) denotes standard framing 16 inches on center with headers insulated with a minimum of R-10 insulation. � Log and solid timberwalls with a minimum average thickness of 3.5 inches are exemptfrom this insulation requirement. Table R402.1.3 Footnote ° Nonfenestration U-factors shall be obtained from measurement, calculation or an approved source or as specified in Section R402.13.