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  1. Sustainable Buildings and Green Markets An Engineering Perspective Presented by: Haven Alford

  2. Overview • Why does it matter • Elements of Sustainable Buildings • Government Application (Green Market Incentives)

  3. Environmental Impact of Buildings (why does it matter?)US Commercial Buildings Facts: • 65.2% total US electricity consumption • > 36% total US primary energy use • 30% total US greenhouse gas emissions • 136 million tons of US construction/demolition waste (about 2.8 lbs/person/day) • 12% of potable water in the US • 40% (3 billion tons annually) of raw materials used globally www.usgbc.org

  4. 5 Broad Areas of Application • Sustainable Sites • Energy and Atmosphere • Indoor Environmental Quality • Water Efficiency • Materials and Resources

  5. LEED Concept and Intent • LEED is the standard for sustainable design worldwide. • Design and construction practices that significantly reduce or eliminate the negative impact of buildings on the environment. • LEED is a point based system that ranks the sustainability of a building’s design by: • Certified (26 – 32 points) • Silver (33 – 38 points) • Gold (39 – 51 points) • Platinum ratings (52 – 69 points)

  6. Why engineers (and you) should care… • Discipline: • MEP 28 points 41% • Architect/LA 21 30% • Civil 11 16% • Constructor 4 6% • Undefined 5 7% • Totals 69 points 100%

  7. Sustainable Sites • Site Selection • Development Density • Brownfield Redevelopment • Alternative Transportation • Public Transportation • Bicycle Storage and Changing Rooms • Alternative Fuel Vehicles • Parking Capacity • Reduced Site Disturbance • Storm Water Management

  8. Alternative Fuel Vehicles www.state.me.us/cleangovt/ ENERGY/energy.htm

  9. Sustainable Sites • Reduced Site Disturbance • Protect or Restore Open Space • Development Footprint • Storm Water Management • Rate and Quantity • Treatment • Heat Island Effect • Non-Roof • Roof • Light Pollution Reduction

  10. Green Roof • www.dep.state.pa.us/.../ se/stormwater.htm

  11. Light Pollution http://archives.cnn.com/2000/US/08/24/dimming.the.lights.ap/large.usa.lights.jpg

  12. Water Efficiency • Water Efficient Landscaping • Reduce by 50% • No Potable Use or No Irrigation • Innovative Wastewater Technologies • Water Use Reduction • 20 – 30%

  13. Waterless Urinals and Composting/Waterless Toilets http://www.aventer.com/toilets/images/t3.jpg http://www.magic-tec.com/magic_ur.html

  14. Energy and Atmosphere • Fundamental Building System Commissioning • Minimum Energy Performance • CFC Reduction in HVAC&R Equipment • Optimize Energy Performance • Renewable Energy • 5 – 10% • Additional Commissioning • Ozone Protection • Measurement and Verification • Green Power

  15. Example of Natural Ventilation www.thedalles.k12.or.us/.../ sld018.htm

  16. Renewable Energy http://www.power-technology.com

  17. Photovoltaic Roof Systems http://www.fsec.ucf.edu/pvt/education/inspgcps/handbook/images/pvarray.jpg http://www.alternativeenergyinc.com/images/gallery/roof_mounted_pv.jpg

  18. Materials and Resources • Storage and Collection of Recyclables • Building Reuse • Maintaining 75 – 100% of Existing Walls, Floor, and Roof • Maintain 100% of the shell/structure and 50% of non-shell/non-structure • Construction Waste Management • Divert 50 – 75% from a landfill • Resource Reuse • 5 – 10% of materials used are salvaged, refurbished, or reused materials, products and furnishings

  19. Materials and Resources • Recycled Content • 5 – 10% (post-consumer + ½ post-industrial) • Regional Materials • 20% manufactured regionally • 50% extracted regionally • Rapidly Renewable Materials • Certified Wood

  20. Recycled and Rapidly Renewable Materials http://www.eps.or.kr http://www.franksupply.com

  21. Indoor Environmental Quality • Minimum IAQ (Indoor Air Quality) Performance • Environmental Tobacco Smoke Control • Carbon Dioxide Monitoring • Ventilation Effectiveness • Construction IAQ Management Plan • During Construction • Before Occupancy

  22. Indoor Environmental Quality • Low Emitting Materials • Adhesives and Sealants • Paints and Coatings • Composite Wood Indoor Chemical and Pollutant Source Control • Controllability of Systems • Perimeter Spaces • Non-Perimeter Spaces

  23. Indoor Environmental Quality • Thermal Comfort • Compliance with ASHRAE 55 • Permanent Monitoring System • Daylight and Views • Daylighting in 75% of spaces • Views for 90% of spaces

  24. Example of Daylighting csep1.phy.ornl.gov/ CSEP/PT/NODE37.html

  25. Federal Government LEED Applications • General Services Administration (GSA) • US Air Force • US Army Corps of Engineers • Department of State • Department of Energy (DOE) • Environmental Protection Agency (EPA) • US Navy

  26. State Government LEED Applications • California • Pennsylvania – all new construction • Oregon – tax credit • New York • Maryland – all buildings over 500,000 ft2 • New Jersey – schools, and voluntary applications • Arizona • Missouri • Wisconsin

  27. Local Government LEED Applications • Austin, Texas • Boulder, Colorado • Los Angeles, California • San Diego, California • San Mateo, California • Arlington, Virginia • Cook County, Illinois • Portland, Oregon • San Jose, California • Seattle, Washington

  28. Incentives • Sell energy back to the utility company • Tax breaks on new technologies • Rebates, grants and loans

  29. Sources • Ray Yunk, Professor of Architectural Engineering • Dustin Schafer, Instructor of Architectural Engineering • www.usgbc.org Questions?