Valuing Our Built Heritage

Transcription

1 The Vancouver Heritage Foundation The Heritage and Sustainability Nexus Valuing Our Built Heritage Friday, November 5 th 2010 Carl Elefante FAIA Principal Director of Sustainability Quinn Evans Architects

2 The Greenest Building is

3 One That is Already Built.

4 What is Sustainable? Ecology Economy Equity The Ecology of Commerce Paul Hawken

5 E-Valuating Heritage Buildings RE-USE VALUE CULTURAL VALUE ECONOMIC VALUE ENVIRONMENTAL VALUE

6 E-Valuating Heritage Buildings RE-USE VALUE CULTURAL VALUE ECONOMIC VALUE ENVIRONMENTAL VALUE

7 E-Valuating Heritage Buildings RE-USE VALUE Current Performance Meets intended performance goals Meets contemporary performance goals Durability / Maintainability Adaptability Salvage-ability / Recycle-ability / Renew-ability

8 E-Valuating Heritage Buildings RE-USE VALUE Current Performance Meets intended performance goals Meets contemporary performance goals Durability / Maintainability Adaptability Salvage-ability / Recycle-ability / Renew-ability

9 Building Well Durability & Maintainability

10 E-Valuating Heritage Buildings RE-USE VALUE Current Performance Meets intended performance goals Meets contemporary performance goals Durability & Maintainability Adaptability Salvage-ability / Recycle-ability / Renew-ability

11 Building Well Adaptability Dobson McOmber Block Quinn Evans Architects

12 E-Valuating Heritage Buildings RE-USE VALUE Current Performance Meets intended performance goals Meets contemporary performance goals Durability / Maintainability Adaptability Salvage-ability / Recycle-ability / Renew-ability

13 Building Well Salvage / Re-cycling / Re-use

14 E-Valuating Heritage Buildings RE-USE VALUE CULTURAL VALUE ECONOMIC VALUE ENVIRONMENTAL VALUE

15 E-Valuating Heritage Buildings CULTURAL VALUE Cultural / historical assessment Original fabric Representative characteristics Craftsmanship and other exceptional values

16 Secretary of the Interior s s Standards as Green Strategies Preservation Restoration Reconstruction Rehabilitation Retain Replenish Replace Renew

17 SoI s Standards: Preservation Preservation focuses on the maintenance and repair of existing historic materials and retention of a property's form as it has evolved over time. Wren Building College of William & Mary QUINN EVANS ARCHITECTS

18 SoI s Standards: Restoration Restoration depicts a property at a particular period of time in its history, while removing evidence of other periods. Calvary Baptist Church QUINN EVANS ARCHITECTS

19 SoI s Standards: Reconstruction Reconstruction re-creates vanished or non-surviving portions of a property for interpretive purposes. Mt. Vernon Treading Barn QUINN EVANS ARCHITECTS

20 SoI s Standards: Rehabilitation Rehabilitation acknowledges the need to alter or add to a historic property to meet continuing or changing uses while retaining the property's historic character. Cleveland Elementary School QUINN EVANS ARCHITECTS

21 E-Valuating Heritage Buildings RE-USE VALUE CULTURAL VALUE ECONOMIC VALUE ENVIRONMENTAL VALUE

22 E-Valuating Heritage Buildings ECONOMIC VALUE Job Creation & Increased Wages Material vs. Labor Intensive Economic Activities New Construction: 50/50 Rehabilitation: 30/70 Center City Revitalization Heritage Tourism Property Value Increase Local Business Support Donovan D. Rypkema Heritage Strategies International

23 E-Valuating Heritage Buildings ECONOMIC VALUE Job Creation & Increased Wages Material vs. Labor Intensive Economic Activities New Construction: 50/50 Rehabilitation: 30/70 Center City Revitalization Heritage Tourism Property Value Increase Local Business Support Donovan D. Rypkema Heritage Strategies International

24 E-Valuating Heritage Buildings ECONOMIC VALUE Direct Economic Effects Materials & Labor for On-site Activities Indirect Economic Effects Economic Activities of Suppliers & Manufacturers Induced Economic Effects Economic Activities by Households of On-site Labor NCPTT National Park Service National Center For Preservation Technology & Training PEIM Preservation Economic Impact Model 2.0 Software

25 ECONOMIC MODES New Development Maintenance / Conservation Restorative Development The Restoration Economy Storm Cunningham

26 E-Valuating Heritage Buildings RE-USE VALUE CULTURAL VALUE ECONOMIC VALUE ENVIRONMENTAL VALUE

27 E-Valuating Heritage Buildings ENVIRONMENTAL VALUE Inherent Green Value of Traditional and Vernacular Building Community context Climate-responsive building Embodied energy & Material resources Impact avoidance

28 E-Valuating Heritage Buildings ENVIRONMENTAL VALUE Inherent Green Value of Traditional and Vernacular Building Community context Climate-responsive building Embodied energy & Material resources Impact avoidance

29 E-Valuating Heritage Buildings ENVIRONMENTAL VALUE Inherent Green Value of Traditional and Vernacular Building Community context Climate-responsive building Embodied energy & Material resources Impact avoidance

30 Building Community Building Community: A New Frontier for Architecture Education and Practice Boyer & Mitgang

31 E-Valuating Heritage Buildings ENVIRONMENTAL VALUE Inherent Green Value of Traditional and Vernacular Building Community context Climate-responsive building Embodied energy & Material resources Impact avoidance

32 Building in Nature

33 Green Heritage Richardi House, Bellaire, Michigan

34 E-Valuating Heritage Buildings ENVIRONMENTAL VALUE Inherent Green Value of Traditional and Vernacular Building Community context Climate-responsive building Embodied energy & Material resources Impact avoidance

35 Embodied Energy

36 Energy Use Trend 2003 Commercial Building Energy Consumption Survey U.S. Department of Energy

37 South Hall 1873 Adolf Cluss North & Center Halls 1908 Snowden Ashford Energy Performance EASTERN MARKET

38 Energy Performance BASELINE ENERGY SIMULATION Pumps Lighting Fans Cooling Hot Water Cooking Equipment Heating

39 Energy Performance WINDOW REPLACEMENT OPTIONS Total Building Energy (MMBtus) 3, , ,500 2,000 1,500 1, BASELINE ECM-5 ECM-6 Space Heating Plug Load Equipment Cooking Domestic Hot Water Space Cooling Ventilation Fans Lighting (Space) Pumps & Auxillary Elec. Energy Usage Intensity Energy Usage Intensity (kbtu/sf) from: Btu/sf to: Btu/sf net: -4.5 Btu/sf -3.8 % Maximum Improvement BASELINE: Assumed single pane glazing ECM-5: Single pane low-e coated glazing ECM-6: Double-pane glazing

40 Energy Performance WALL INSULATION OPTIONS 3, Total Building Energy (MMBtus) 3,000 2,500 2,000 1,500 1, BASELINE Space Heating Cooking Space Cooling Lighting (Space) Energy Usage Intensity Plug Load Equipment Domestic Hot Water Ventilation Fans Pumps & Auxillary Elec ECM Energy Usage Intensity (kbtu/sf) from: Btu/sf to: Btu/sf net: -5.6 Btu/sf -4.7 % Maximum Improvement BASELINE: 1-10 thick load bearing brick ECM-4: 2 rigid insulation (furred out with air layer) (R-3.5/in)

41 Energy Performance ROOF INSULATION OPTIONS Total Building Energy (MMBtus) 3,500 3,000 2,500 2,000 1,500 1, BASELINE: Dark slate roof on wood deck ECM-1: High reflective roof skin ECM-2: 2 rigid roof insulation (R-3.5/in) ECM-3: 4 polyisocyanurate roof insulation (R-31) BASELINE ECM-1 ECM-2 ECM-3 Space Heating Plug Load Equipment Cooking Domestic Hot Water Space Cooling Ventilation Fans Lighting (Space) Pumps & Auxillary Elec. Energy Usage Intensity Energy Usage Intensity (kbtu/sf) from: Btu/sf to: Btu/sf net: Btu/sf % Maximum Improvement

42 E-Valuating Heritage Buildings ENVIRONMENTAL VALUE Inherent Green Value of Traditional and Vernacular Building Community context Climate-responsive building Embodied energy & Material resources Impact avoidance

43 How Buildings Learn What Happens After They re Built Stewart Brand BUILDING LIFE-CYCLES Six S s of Life-Cycle

44 Life Cycle Analysis U.S. EPA & NIST BEES Building for Economic and Environmental Sustainability AFTER USE Renewal Removal Re-use Disposal

45 Life Cycle Analysis Wall Assemblies Brick & Steel Metal Siding EIFS Brick & Wood Wood Siding PVC Siding Precast Water Pollution Air Pollution Resources Brick & Block Climate Energy R Value

46 Building Life Cycles Traditional & Modern Technology Traditional Wood Window Modern Aluminum Window

47 Green Building Characteristics Strategies: site micro-climate, water-efficient landscaping, low-impact development Systems: high efficiency HVAC & controls, low-flow plumbing, energy-efficient lighting Materials: durability, salvage, recycling, natural materials, non-toxic materials, local materials Performance: daylighting, natural ventilation, controllability

48 SS Sustainable Site WE Water Efficiency EA Energy & Atmosphere MR Material Resources EQ Environmental Quality ID Innovation & Design

49 Sustainable Stewardship Valuing Existing Buildings

50 Ventilation & Daylight Sustainable Stewardship EASTERN MARKET

51 1973 Improvements Sustainable Stewardship EASTERN MARKET

52 Fire Damage Sustainable Stewardship EASTERN MARKET Skylight Detail

53 Sustainable Stewardship Roof with Restored Skylight EASTERN MARKET

54 The Greenest Building is

55 One That is Already Built.

56 Contact Information Carl Elefante FAIA Principal Director of Sustainability Quinn Evans Architects th Street NW Washington DC (202)

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