ICC-2853 / cdpACCESS-11300

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<table class="diffmod"><tbody><tr><td><ins class="diffins">For SI: 1 inch = 25.4 mm, 1 pound per square foot = 4.88 kg/m</ins><sup class="diffmod"><ins class="diffins">2</ins></sup><ins class="diffins">, 1 pound per cubic foot = 16 kg/m</ins><sup class="diffmod"><ins class="diffins">3</ins></sup><ins class="diffins">.</ins></td><ins class="diffins">
</ins></tr></tbody></table><table><tbody><tr><td><ins class="diffins">ci = Continuous insulation, NR = No requirement, LS = Liner system.</ins></td><ins class="diffins">
</ins></tr></tbody></table><table><tbody><tr><td><ins class="diffins">a.    Assembly descriptions can be found in ASHRAE 90.1 Appendix A.  Framed wall assemblies in Table 402.1.3 correspond to assemblies in ASHRAE 90.1, Appendix A with 3-1/2 studs spaced 16 inches apart measured center to center.  Where using the R-value compliance method for building design, wall assemblies having other stud spacings and depths and having equivalent U-factors in ASHRAE 90.1, Appendix A shall be an alternative.. Claddings and exterior or interior wall sheathing materials having equivalent or greater R-values are an alternative for such framed wall assemblies. </ins></td><ins class="diffins">
</ins></tr></tbody></table><br /><table><tbody class="diffmod"><tr><td><del class="diffmod">For SI: 1 inch = 25.4 mm</del><ins class="diffmod">b.    Where using R-value compliance method</ins>, <del class="diffmod">1 pound per square foot = 4.88 kg/m</del><sup class="diffmod"><del class="diffmod">2</del></sup><ins class="diffmod">a thermal spacer block shall be provided</ins>, <del class="diffmod">1 pound per cubic foot = 16 kg/m</del><sup class="diffmod"><del class="diffmod">3</del></sup><ins class="diffmod">otherwise use the U-factor compliance method in Table C402.1.4</ins>.</td><ins class="diffins">
</ins></tr></tbody></table><table><tbody class="diffmod"><tr><td><del class="diffmod">ci = Continuous insulation</del><ins class="diffmod">c.    R-5.7ci is allowed to be substituted with concrete block walls complying with ASTM C 90</ins>, <del class="diffmod">NR = No requirement</del><ins class="diffmod">ungrouted or partially grouted at 32 inches or less on center vertically and 48 inches or less on center horizontally</ins>, <del class="diffmod">LS = Liner system</del><ins class="diffmod">with ungrouted cores filled with materials having a maximum thermal conductivity of 0.44 Btu-in/h-f</ins><sup class="diffmod"><ins class="diffmod">2</ins></sup><ins class="diffmod"> °F</ins>.</td><ins class="diffins">
</ins></tr></tbody></table><table><tbody class="diffmod"><tr><td><del class="diffmod">a</del><ins class="diffmod">d</ins>.    <del class="diffmod">Assembly descriptions can be found in ANSI/ASHRAE/IESNA Appendix A</del><ins class="diffmod">Where heated slabs are below grade, below-grade walls shall comply with the exterior insulation requirements for heated slabs</ins>.</td><ins class="diffins">
</ins></tr></tbody></table><table><tbody class="diffmod"><tr><td><del class="diffmod">b</del><ins class="diffmod">e</ins>.    <del class="diffmod">Where using R-value compliance method, a thermal spacer block</del><ins class="diffmod">"Mass floors"</ins> shall <del class="diffmod">be provided, otherwise use the U-factor compliance method in Table C402.1.4.</del></td></tr><ins class="diffmod">include floors weighing not less than:</ins></td><ins class="diffmod">
</ins></tr></tbody></table><table><tbody class="diffmod"><tr><td><del class="diffmod">c</del><ins class="diffmod">1</ins>.    <del class="diffmod">R-5.7ci is allowed to be substituted with concrete block walls complying with ASTM C 90, ungrouted or partially grouted at 32 inches or less on center vertically and 48 inches or less on center horizontally, with ungrouted cores filled with materials having a maximum thermal conductivity</del><ins class="diffmod">35 pounds per square foot</ins> of <del class="diffmod">0.44 Btu-in/h-f</del><sup class="diffmod"><del class="diffmod">2</del></sup><del class="diffmod"> °F.</del></td></tr><ins class="diffmod">floor surface area; or</ins></td><ins class="diffmod">
</ins></tr></tbody></table><table><tbody class="diffmod"><tr><td><del class="diffmod">d</del><ins class="diffmod">2</ins>.    <del class="diffmod">Where heated slabs are below grade, below-grade walls shall comply with</del><ins class="diffmod">25 pounds per square foot of floor surface area where</ins> the <del class="diffmod">exterior insulation requirements for heated slabs</del><ins class="diffmod">material weight is not more than 120 pounds per cubic foot</ins>.</td><ins class="diffins">
</ins></tr></tbody></table><table><tbody class="diffmod"><tr><td><del class="diffmod">e</del><ins class="diffmod">f</ins>.    <del class="diffmod">"Mass floors"</del><ins class="diffmod">Steel floor joist systems</ins> shall <del class="diffmod">include floors weighing not less than:</del></td></tr><ins class="diffmod">be insulated to R-38.</ins></td><ins class="diffmod">
</ins></tr></tbody></table><table class="diffmod"><tr><td><del class="diffdel">1.    35 pounds per square foot of floor surface area; or</del></td></tr></table><table><tr><td><del class="diffdel">2.    25 pounds per square foot of floor surface area where the material weight is not more than 120 pounds per cubic foot.</del></td></tr></table><table><tr><td><del class="diffdel">f.    Steel floor joist systems shall be insulated to R-38.</del></td></tr></table>

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<table><tbody><tr><td>For SI: 1 inch = 25.4 mm, 1 pound per square foot = 4.88 kg/m<sup>2</sup>, 1 pound per cubic foot = 16 kg/m<sup>3</sup>.</td>
</tr></tbody></table><table><tbody><tr><td>ci = Continuous insulation, NR = No requirement, LS = Liner system.</td>
</tr></tbody></table><table><tbody><tr><td>a.    Assembly descriptions can be found in ASHRAE 90.1 Appendix A.  Framed wall assemblies in Table 402.1.3 correspond to assemblies in ASHRAE 90.1, Appendix A with 3-1/2 studs spaced 16 inches apart measured center to center.  Where using the R-value compliance method for building design, wall assemblies having other stud spacings and depths and having equivalent U-factors in ASHRAE 90.1, Appendix A shall be an alternative.. Claddings and exterior or interior wall sheathing materials having equivalent or greater R-values are an alternative for such framed wall assemblies. </td>
</tr></tbody></table><br /><table><tbody><tr><td>b.    Where using R-value compliance method, a thermal spacer block shall be provided, otherwise use the U-factor compliance method in Table C402.1.4.</td>
</tr></tbody></table><table><tbody><tr><td>c.    R-5.7ci is allowed to be substituted with concrete block walls complying with ASTM C 90, ungrouted or partially grouted at 32 inches or less on center vertically and 48 inches or less on center horizontally, with ungrouted cores filled with materials having a maximum thermal conductivity of 0.44 Btu-in/h-f<sup>2</sup> °F.</td>
</tr></tbody></table><table><tbody><tr><td>d.    Where heated slabs are below grade, below-grade walls shall comply with the exterior insulation requirements for heated slabs.</td>
</tr></tbody></table><table><tbody><tr><td>e.    "Mass floors" shall include floors weighing not less than:</td>
</tr></tbody></table><table><tbody><tr><td>1.    35 pounds per square foot of floor surface area; or</td>
</tr></tbody></table><table><tbody><tr><td>2.    25 pounds per square foot of floor surface area where the material weight is not more than 120 pounds per cubic foot.</td>
</tr></tbody></table><table><tbody><tr><td>f.    Steel floor joist systems shall be insulated to R-38.</td>
</tr></tbody></table>

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<table><tr><td>For SI: 1 inch = 25.4 mm, 1 pound per square foot = 4.88 kg/m<sup>2</sup>, 1 pound per cubic foot = 16 kg/m<sup>3</sup>.</td></tr></table><table><tr><td>ci = Continuous insulation, NR = No requirement, LS = Liner system.</td></tr></table><table><tr><td>a.    Assembly descriptions can be found in ANSI/ASHRAE/IESNA Appendix A.</td></tr></table><table><tr><td>b.    Where using R-value compliance method, a thermal spacer block shall be provided, otherwise use the U-factor compliance method in Table C402.1.4.</td></tr></table><table><tr><td>c.    R-5.7ci is allowed to be substituted with concrete block walls complying with ASTM C 90, ungrouted or partially grouted at 32 inches or less on center vertically and 48 inches or less on center horizontally, with ungrouted cores filled with materials having a maximum thermal conductivity of 0.44 Btu-in/h-f<sup>2</sup> °F.</td></tr></table><table><tr><td>d.    Where heated slabs are below grade, below-grade walls shall comply with the exterior insulation requirements for heated slabs.</td></tr></table><table><tr><td>e.    "Mass floors" shall include floors weighing not less than:</td></tr></table><table><tr><td>1.    35 pounds per square foot of floor surface area; or</td></tr></table><table><tr><td>2.    25 pounds per square foot of floor surface area where the material weight is not more than 120 pounds per cubic foot.</td></tr></table><table><tr><td>f.    Steel floor joist systems shall be insulated to R-38.</td></tr></table>