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R Value of Wall Improvement

R Value of Wall Improvement. Breno bondarenko Costa Arch 3630 Prof. Aptekar & Prof Azaroff. IECC & ASHRAE Maps. IECC & ASHRAE Maps. Average Temp & Precipitation Irvine, CA. Average Temp & Precipitation for NYC. Existing Conditions- Stevens. Identifying Material

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R Value of Wall Improvement

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  1. R Value of Wall Improvement Breno bondarenko Costa Arch 3630 Prof. Aptekar & Prof Azaroff

  2. IECC & ASHRAE Maps

  3. IECC & ASHRAE Maps

  4. Average Temp & Precipitation Irvine, CA

  5. Average Temp & Precipitation for NYC

  6. Existing Conditions- Stevens • Identifying Material • 1/4” Cement Board Siding • 1 3/16” Substructure • Thermal Barrier • ¾” Plywood • Close Cell Spray Foam R30 • 2x6” Stud Wall • Awning Window by Pella • 5/8” GWB • Phase Change Material(PCM)

  7. Existing Conditions – References R Value

  8. Existing Conditions – References R Value

  9. Existing Conditions – R Value of Wall 2x6” Wood Stud=6.875 Closed Cell Foam R30=38.4 5/8” GWB with PCM=0.569 ¾” Plywood=0.95 Window by Pella=2.75 ¼” Cement Siding=0.13 Total=49.674 • The addition of all the R values of the wall materials does not surpass the 50 minimum for an excellent insulation.

  10. Proposed Changes – Stevens • By simply adding a 2” air space at insulation on the outside part of the wall, the R value of the wall increases and surpasses the 50 minimum required. 2x6” Wood Stud=6.875 Closed Cell Foam R30=38.4 5/8” GWB with PCM=0.569 ¾” Plywood=0.95 Window by Pella=2.75 ¼” Cement Siding=0.13 2” Air Space @ Insulation=1.13 Total=50.804

  11. Existing Conditions- SCIAL/CalTech Identifying Materials Structural Steel Framing 4x6 (wood) Beam 2x12 (wood) beam (6”)Batt Insulation (5/8”) Plywood Sheathing Sprayed Insulation

  12. Existing Conditions – Reference R Value

  13. Existing Conditions – R Value of Wall Structural Steel Framing=0.541 4x6 (wood) Beam=5.4 2x12 (wood) beam=16.875(12”x12”) (6”)BattInsulation=19.0 (5/8”) Plywood Sheathing=0.94 Sprayed Insulation @ 3”=2.4(@2.4 per12”h) Sprayed Insulation @ 6”=4.8(@2.4 per 12”h) Total=49.956 • The total addition of the R values of the wall is a little bellow the recommended. Although, there is a thermal bridge connecting the roof to the wall making this number go down quite a bit and diminishing the ability for the wall to insulate the building.

  14. Proposed Changes – R Value of Wall Structural Steel Framing=0.541 4x6 (wood) Beam=5.4 2x12 (wood) beam=16.875(12”x12”) (6”)BattInsulation=19.0 (5/8”) Plywood Sheathing=0.94 Sprayed Insulation @ 6”=4.8(@2.4 per12”h) Sprayed Insulation @ 6”=4.8(@2.4 per 12”h) Total=52.356 • By adding sprayed insulation around the steel structural framing, it eliminates the thermal bridge, increasing the R value, therefore, insulating the building better.

  15. References • http://www.weather.com/weather/wxclimatology/monthly/graph/USNY0996 • http://www.weather.com/weather/wxclimatology/monthly/92697 • Building System: Mechanical, Electrical, Plumbing, Fire Safety & Communication Systems, Lighting & Acoustics Educational book by Wendell C. Edwards • http://archtoolbox.com/materials-systems/thermal-moisture-protection/24-rvalues.html • http://rvalue.net/page2.html • http://apps1.eere.energy.gov/buildings/publications/pdfs/building_america/4_3a_ba_innov_buildingscienceclimatemaps_011713.pdf • http://www.jameshardie.com/pdf/esr-1844.pdf • http://www.springfieldmo.gov/taskforce/greenbuild/pdfs/rValRequireASHRAE90.1.pdf

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