1627 RUCKER AVE 2017-07-28 - Laserfiche WebLink

Table R402.1.1 FootnoteSFor SI:1 foot-.-NK.8 mm,ci.=continuous insulation,int.=intermediate fra R-values are minimums.U-factors • and SHGC are maximums.When insulation is insr- - —a cavity which is less than the label or design thickness of ulation,the compressed R-value of the insulation from Appendix Table A101.4 shall not be less than the R-value specified in the table.bThe fenestration U-factor column excludes skylights.The SHGC column applies to all glazed fenestration.Exception:Skylights may be excluded from glazed fenestration SHGC requirements in Climate Zones 1 through 3 where the SHGC for such skylights does not exceed 0.30.C"10/15/21.+TB" means R-10 continuous insulation on the exterior of the wall, or R-15 on the continuous 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 interior of the basement wall plus R-5 continuous insulation on the interior or exterior of the wall. "10/13" means R-10 continuous insulation on the interior or exterior of the home or R-13 cavity insulation at the interior of the basement wall. "TB" means thermal break between floor slab and basement wall.dR-10 continuous insulation is required under heated slab on grade floors. See R402.2.9.1.eThere are no SHGC requirements in the Marine Zone.fBasement wall insulation is not required in warm-humid locations as defined by Figure R301.1 and Table R301.1.gReserved.hFirst value is cavity insulation, second is continuous insulation or insulated siding, so "13.+5" means R-13 cavity insulation plus R-5 continuous insulation or insulated siding. If structural sheathing covers 40 percent or less of the exterior, continuous insulation R-value shall be permitted to be reduced by no more than R-3 in the locations where structural sheathing is used to maintain a consistent total sheathing thickness.iThe second R-value applies when more than half the insulation is on the interior of the mass wall.jFor single rafter-or joist- vaulted ceilings,the insulation may be reduced to R-38.klnt. (intermediate framing)denotes standard framing 16 inches on center with headers insulated with a minimum of R-10 insulation.ILog and solid timber walls with a minimum average thickness of 3.5 inches are exempt from this insulation requirement.Table R402.1.3 Footnoteallonfenestration U-factors shall be obtained from measurement, calculation or an approved source or as specified in Section R402.1.3.