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Table R402.1.1 Footnotes • <br /> For SI:1 foot.=304.8 mm,ci.=continuous insulation, int.=intermediateframing. <br /> aR-values are minimums.U factorsand SHGC are maximums.When insulation is installed in a cavity which is less <br /> than the label or design thickness of the insulation,the compressed R-value of the insulation from Appendix Table <br /> A101.4 shall not be lessthan the R-value specified in the table. <br /> b Thefenestrati on U-factor column excludes skylights.The SHGC column appliesto all glazed fenestration. <br /> ""10/15/21.+TB"means R-10 continuous insulation on the exterior of the wall,or R-15 on the continuous insulation <br /> on the interior of the wall,or R-21 cavity insulation plus a thermal break between the slab and the basement wall at <br /> the interior of the basement wall."10/15/21.+TB"shall be permitted to be met with R-13 cavity insulation on the <br /> interior of the basement wall plus R-5 continuous insulation on the interior or exterior of the wall."10/13"means R- <br /> 10 continuous insulation on the interior or exterior of the home or R-13 cavity insulation at the interior of the <br /> basement wall."TB"means thermal break between floor slab and basement wall. <br /> d R-10 continuous insulation is required under heated slab on gradefloors.See R402.2.9.1. <br /> eThere are no SHGC requirements in the Marine Zone. <br /> Reserved. <br /> g Reserved. <br /> h Reserved. <br /> 'The second R-value applies when more than half the insulation is on the interior of the mass wall. <br /> Reserved. <br /> k For single rafter-or joist vaulted ceilings,the insulation may be reduced to R-38. <br /> Reserved. <br /> m Int.(intermediate framing)denotes standard framing 16 inches on center with headers insulated with a minimum <br /> of R-10 insulation. <br /> Table R402.1.3 Footnote <br /> Nonfenestration U factorsshall be obtained from measurement,calculation or an approved source or as specified in <br /> Section R402.1.3. <br /> �4t <br /> i �. <br />