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Envelope Requirements Summary, pq 2 ENV-REQ <br /> 2015 WSEC Compliance Forms for Commercial Buildings including R2,R3,&R4 over 3 stories and all R1 Revised Oct 2017 <br /> Definitions: <br /> Ls=Liner system--A continuous membrane installed below the purlins and uninterrupted by framing members.Uncompressed,unfaced <br /> insulation rests on top of the membrane between the purlins.Refer to Section A102.2.5.4. <br /> c.i.=Continuous insulation--Insulation that is continuous across all structural members without thermal bridges other than service <br /> openings and penetrations by metal fasteners with a x-sectional area of less than 0.04%of the opaque surface area of the assembly. <br /> Components with more than 0.04%metal penetrations may be eligible to follow the alternate CI values below. <br /> int=Intermediate framing--Includes insulated headers,corners and interior partition wall to exterior wall intersections.Refer to Section <br /> A103.2 for framing definitions. <br /> Footnote Summary: <br /> Each table in the 2015 WSEC has footnotes applicable to specific information provided in the table.This footnote summary provides only <br /> abbreviated details from these footnotes. Refer to 2015 WSEC for complete footnote information. <br /> Note 1 -Assembly descriptions can be found in Chapter 2 and Appendix A. <br /> Note 2-Use of assembly U-factors,C-factors and F-factors from Appendix A and Chapter 3 are required unless otherwise allowed <br /> by the provisions of this Code. <br /> Note 3-For metal building roofs where using R-value compliance method,a thermal spacer block with minimum thickness of 1/2-inch <br /> and minimum R-value of R-3.5 is required.Otherwise use the U-factor compliance method. <br /> Note 4-Where heated slabs are below-grade,they shall comply with the F-factor requirements for slab-on-grade heated slabs. <br /> Note 5-Heated slab F-factors shall be determined specifically for heated slabs.Unheated slab F-factors shall not be used. <br /> Note 6-CMU walls in all occupancies other than Group R may be eligible for reduced insulation if all provisions stated in applicable <br /> footnote are met.Refer to Footnote D in Table C402.1.4 or Footnote C in Table C402.1.3 for eligibility requirements. <br /> Note 7-Components with continuous insulation but with metal penetrations/connections may be eligible for alternate continuous <br /> insulation R-values if all provisions in applicable footnote are met. Refer to alternate prescriptive R-values in table below <br /> and Footnote G in Table C402.1.3 for eligibility requirements. <br /> Alternate continuous insulation nominal R-values <br /> This alternate nominal R-value compliance option is allowed for projects complying with all of the following: <br /> 1.The ratio of the cross-sectional area,as measured in the plane of the surface,of metal penetrations of otherwise continuous <br /> insulation to the opaque surface area of the assembly is greater than 0.0004(0.04%),but less than 0.0012(0.12%). <br /> 2.The metal penetrations of otherwise continuous insulation are isolated or discontinuous(e.g.,brick ties or other <br /> discontinuous metal attachments,offset brackets supporting shelf angles that allow insulation to go between the shelf <br /> angle and the primary portions of the wall structure).No continuous metal elements(e.g.,metal studs,z-girts,z-channels, <br /> shelf angles)penetrate the otherwise continuous portion of the insulation. <br /> 3.Building permit drawings shall contain details showing the locations and dimensions of all the metal penetrations(e.g., <br /> brick ties or other discontinuous metal attachments,offset brackets,etc.)of otherwise continuous insulation.In addition, <br /> calculations shall be provided showing the ratio of the cross-sectional area of metal penetrations of otherwise continuous <br /> Assemblies with Alternate option for assemblies with Alternate option fir assemblies with <br /> coatiauous metal penetrations,greater than metal peaetratieas,greater than or <br /> insulation(see 0.04%but less than 0J3% equal to 0.01%bat less than 0.12% <br /> definition) <br /> R-9.5d R-11 k R-13ci <br /> R 11.4d R-143ci R-15.7ci <br /> R-133c1 R 16.6ci R.183d <br /> R-15.2d R-l9.Oci R-21ci <br /> R.-30a R-38d R-42ci <br /> R-38a R-48d R-53ci <br /> R-13+R-7.50 R-13+R-9.4d R-13+R-10.3c1 <br /> R-13+R-10ci R-13+R-12.5a R-13+R-13.8d <br /> R-13+R 12Sci R-13+R 15.6ci R-13+R-17.2ci <br /> R-13+R-13ci R-13+R 16.3a R-13+R-17.9ci <br /> R-19+R-8.5ci R-19+R-10.6ci R-19+R-11.7ci <br /> R-19+R-14ci R-19+R-17.5ci R-19+R-19.2ci <br /> R-19+R-16d R-19+R-20ci R 19+R-22d <br /> R-20+R.3.8ci R-20+R-4.Sd R-20+R-53d <br /> R-21+R-5a R-21+R4.3a R-21+R4.9d <br /> End of Envelope Requirements Summary <br />