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Preliminary Design Review

Preliminary Design Review. Tony Burnette Trevor Fitch Sheryl Gillow Sigitas Rimkus Simon Stam. PDR Agenda. Introduction Foundation Analysis Roof Truss Analysis Hydronic Subsystem Analysis Building Thermal Analysis Solar Collector Analysis. Introduction. Evanston.

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Preliminary Design Review

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  1. Preliminary Design Review • Tony Burnette • Trevor Fitch • Sheryl Gillow • Sigitas Rimkus • Simon Stam

  2. PDR Agenda • Introduction • Foundation Analysis • Roof Truss Analysis • Hydronic Subsystem Analysis • Building Thermal Analysis • Solar Collector Analysis

  3. Introduction

  4. Evanston • Suburb of Chicago, IL • 60201 Image Courtesy of: www.bonusround.com

  5. Foundation Analysis

  6. Soil Properties Data Courtesy of: “Soil Survey of Du Page County, IL” Natural Resources Conservation Service, 1981

  7. Properties of Concrete Data Courtesy of: “Building Code Requirements for Structural Concrete and Commentary” ACI Committee 318, 2008

  8. Foundation Profile

  9. Insulating Concrete Forms • Rigid plastic foam forms • Hold concrete in place during curing • Serve as thermal insulation after the concrete sets Image Courtesy of: www.pouredfoundations.com

  10. ICF Benefits • Energy savings • Qualifies for a tax credit • Increases interior comfort • Controls moisture, air leaks, mold, and pests • Reduces sound transmissions • Ease of finishing the basement • Drywall can be nailed directly to foam • Cost competitive with poured concrete • Environmentally friendly

  11. ICF Drawbacks • Installation costs may be higher than traditional concrete • Insect problems may occur if installed incorrectly • Relatively unknown to officials and inspectors

  12. Roof Truss Analysis

  13. Loads on Roof • All roofing materials • Flat plate collectors • Snow • Wind load

  14. Pairwise Comparison

  15. Design Compromises • Number of trusses • Desired factor of safety • Beam thickness • Theoretical load estimate • Durability • Insulation

  16. Forces in Truss D h Y E C B A F G X Image Courtesy of: www.saskaschools.ca

  17. Forces in Truss

  18. Lumber Choices Data Courtesy of: www.matweb.com

  19. Hydronic Subsystem Analysis

  20. Goals • Provide domestic hot water at 150 °F • Prevent freezing of working fluid

  21. Piping Options • Copper • PVC

  22. System Options • Purchase a kit • Kit contains almost everything needed for the hydronic system • Extra parts can be purchased if needed • Purchase all components individiually

  23. Recommendations • Copper piping • Glycol based working fluid • Water tank with a heat exchanger

  24. Building Thermal Analysis

  25. Image Courtesy of: www.energy.gov

  26. Weather Data Data Courtesy of: www.noaa.gov

  27. Insulation

  28. Image Courtesy of: www.energy.gov

  29. Insulation Types • Blankets • Standard “Pink Panther” insulation • Available in standard sizes • Loose-Fill • Same material as blanket insulation • Blown into hard to reach areas • Rigid-Foam • Very effective in tight spaces and cold climates • Up to twice as insulating as blanket insulation • Foam-in-Place • Same material as rigid-foam insulation • Used around window and door frames

  30. Data Courtesy Of: www.energy.gov

  31. Windows

  32. Image Courtesy of: www.energysavers.gov

  33. Window Frames • Metal Frames • Light and almost maintenance free • Very poor insulating material • Composite Frames • Same structural and thermal properties as wood • Resist moisture and decay • Fiberglass Frames • Can be filled with insulation • Superior thermal performance to wood or vinyl • Vinyl Frames • Good thermal performance and low maintenance • Tendency to crack in temperature extremes • Paint fades in sunlight • Wood Frames • Insulate fairly well • Require a lot of maintenance • Susceptible to moisture and decay

  34. Window Glazing and Glass • Gas Fills • Heat-Absorbing Tints • Insulated • Low-Emissivity Coatings • Reflective Coatings • Spectrally Selective Coatings

  35. Doors

  36. Exterior Doors • Steel skin with insulating core • Provides higher R-value than solid wood door • Weatherstripping further increases the R-value

  37. Miscellany

  38. Air Sealing • Prevents heat from escaping through cracks in the wall • Air sealing techniques • Air barriers • Block air movement through a wall • Airtight drywall • Caulking • Weatherstripping

  39. Moisture Control • Keep untreated wood from touching soil • Provide ample drainage • Install air sealing gaskets • Install insect shields Image Courtesy of: www.energysavers.gov

  40. Ventilation • Removes air pollutants and moisture • Three basic strategies • Natural ventilation • Air escaping through cracks and vents • Whole-house ventilation • Controlled air movement through fans and duct systems • Spot ventilation • Controlled air movement through localized exhaust fans

  41. Solar Collector Analysis

  42. Collector Slope

  43. Panel Area

  44. Test Intercept

  45. Test Slope

  46. Potential Vendors

  47. Questions?

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