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Passive Sustainability for Existing Buildings
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Transcript of Passive Sustainability for Existing Buildings
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GULF COAST GREEN 2013CREATE(D) HISTORY:
LEARNING FROM THE PAST TO GUIDE THE FUTURE
PASSIVE SUSTAINABILITY
FOR
EXISTING BUILDINGSGERALD MOORHEAD FAIA
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“GULF COAST GREEN 2013 - USGBC” is a Registered Provider with The American Institute of Architects Continuing Education Systems (AIA/CES). Credit(s) earned on completion of this program will be reported to AIA/CESfor AIA members. Certificates of Completion for both AIA members and non-AIA members are available upon request.
This program is registered with AIA/CES for continuing professional education. As such, it does not include content that may be deemed or construed to be an approval or endorsement by the AIA of any material of construction or any method or manner of handling, using, distributing, or dealing in any material or product.
Questions related to specific materials, methods, and services will be addressed at the conclusion of this presentation.
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GULF COAST GREEN 2013CREATE(D) HISTORY:
LEARNING FROM THE PAST TO GUIDE THE FUTURE
PASSIVE SUSTAINABILITY FOR EXISTING BUILDINGS
SUSTAINABILITY WITH LESS “TECHNOLOGY”
EXISTING BUILDINGS, DEPENDING ON AGE AND
CONSTRUCTION SYSTEMS, CONTAIN MANY ASPECTS OF
SUSTAINABILITY THAT MAKE THEM MORE
ECONOMICALLY VIABLE THAN NEW CONSTRUCTION.
COURSE SUMMARY
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GULF COAST GREEN 2013CREATE(D) HISTORY:
LEARNING FROM THE PAST TO GUIDE THE FUTURE
1. IMPERATIVE FOR CONSERVATION OF EXISTING
BUILDINGS AND EMBODIED RESOURCES.
2. INHERENT CHARACTERISTICS OF EXISTING BLDGS.
3. TAKE ADVANTAGE OF INHERENT CHARACTERISTICS FOR
PASSIVE SUSTAINABILITY
LEARNING OBJECTIVES
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GULF COAST GREEN 2013CREATE(D) HISTORY:
LEARNING FROM THE PAST TO GUIDE THE FUTURE
“THE GREENEST BUILDING IS … ONE THAT IS ALREADY BUILT.”
CARL ELEFANTE, FAIA, QUINN/EVANS ARCHITECTS
EMBODIED ENERGY AND CARBON IN EXISTING CONSTRUCTION AND MATERIALS:
A 50,000 SF COMMERCIAL BUILDING IS EQUAL TO 80 BILLION BTU’S OF ENERGY, THE EQUIVALENT OF 640,000 GAL. OF GASOLINE,AT $3.75/GAL. = $2,400,000 = $48/SF
IF AN EQUIVALENT NEW BUILDING COSTS $200/SF, THE EXISTING BUILDING WOULD BE 25% MORE ECONOMICAL
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GULF COAST GREEN 2013CREATE(D) HISTORY:
LEARNING FROM THE PAST TO GUIDE THE FUTURE
“THE GREENEST BUILDING IS … ONE THAT IS ALREADY BUILT.”
CARL ELEFANTE, FAIA, QUINN/EVANS ARCHITECTS
EXISTING BUILDINGS OUTNUMBER NEW BUILDINGS IN THE US BY 100 TO 1
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GULF COAST GREEN 2013CREATE(D) HISTORY:
LEARNING FROM THE PAST TO GUIDE THE FUTURE
“THE GREENEST BUILDING IS … ONE THAT IS ALREADY BUILT.”
CARL ELEFANTE, FAIA, QUINN/EVANS ARCHITECTS
EXISTING BUILDINGS OUTNUMBER NEW BUILDINGS IN THE US BY 100 TO 1
A GSA STUDY IN 1999 FOUND THAT UTILITY COSTS ARE 27% LESS FOR HISTORIC BUILDINGS THAN FOR NEW BUILDINGS
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GULF COAST GREEN 2013CREATE(D) HISTORY:
LEARNING FROM THE PAST TO GUIDE THE FUTURE
“THE GREENEST BUILDING IS … ONE THAT IS ALREADY BUILT.”
CARL ELEFANTE, FAIA, QUINN/EVANS ARCHITECTS
EXISTING BUILDINGS OUTNUMBER NEW BUILDINGS IN THE US BY 100 TO 1
GSA STUDY IN 1999 FOUND THAT UTILITY COSTS ARE 27% LESS FOR HISTORIC BUILDINGS THAN FOR NEW BUILDINGS
“LONG LIFE / LOOSE FIT.”BUILDINGS CAN LAST A LONG TIME IF THEY ALLOW FOR CHANGING USES.
STEWART BRAND, 1994
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GULF COAST GREEN 2013CREATE(D) HISTORY:
LEARNING FROM THE PAST TO GUIDE THE FUTURE
“THE GREENEST BUILDING IS … ONE THAT IS ALREADY BUILT.”
CARL ELEFANTE, FAIA, QUINN/EVANS ARCHITECTS
EXISTING BUILDINGS OUTNUMBER NEW BUILDINGS IN THE US BY 100 TO 1
GSA STUDY IN 1999 FOUND THAT UTILITY COSTS ARE 27% LESS FOR HISTORIC BUILDINGS THAN FOR NEW BUILDINGS
“LONG LIFE / LOOSE FIT.”BUILDINGS CAN LAST A LONG TIME IF THEY ALLOW FOR CHANGING USES.
STEWART BRAND, 1994
AND IT’S NOT JUST THE BUILDING: DON’T FORGET THE LAND. IT IS ALREADY IN USE.
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GULF COAST GREEN 2013CREATE(D) HISTORY:
LEARNING FROM THE PAST TO GUIDE THE FUTURE
WHAT IS AN EXISTING BUILDING?
1. OVER 50 YEARS OLD – “HISTORIC”
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GULF COAST GREEN 2013CREATE(D) HISTORY:
LEARNING FROM THE PAST TO GUIDE THE FUTURE
WHAT IS AN EXISTING BUILDING?
1. OVER 50 YEARS OLD – “HISTORIC”
2. 50 – 30 YEARS OLD – POSSIBLY BUILT W/O AC
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GULF COAST GREEN 2013CREATE(D) HISTORY:
LEARNING FROM THE PAST TO GUIDE THE FUTURE
WHAT IS AN EXISTING BUILDING?
1. OVER 50 YEARS OLD – “HISTORIC”
2. 50 – 30 YEARS OLD – POSSIBLY BUILT W/O AC
3. LESS THAN 30 YEARS OLD – PROBABLY BUILT WITH AC
IN HOUSTON, 1980 IS A KEY TURNING POINT FOR OUR ENVIRONMENT:
BEFORE 1980, SOME PLACES WHERE AIRCONDITIONED.
AFTER 1980, EVERYPLACE WAS EXPECTED TO BE
AIRCONDITIONED: BUILDINGS, HOMES, CARS
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GULF COAST GREEN 2013CREATE(D) HISTORY:
LEARNING FROM THE PAST TO GUIDE THE FUTURE
PASSIVE SUSTAINABILITY
VALID FOR ALL PROJECTS, NEW AND EXISTING BUILDINGS
PASSIVE APPROACHES MAY BE LESS EXPENSIVE TO BUILD
PASSIVE SUSTAINABILITY TAKES ADVANTAGE OF THE CHARACTERISTICS OF AN EXISTING BUILDING, HISTORIC OR OTHERWISE, TO CREATE A HABITABLE ENVIRONMENT USING AS FEW NATURAL AND MAN-MADE RESOURCES AND ACTIVE SYSTEMS AS POSSIBLE.
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GULF COAST GREEN 2013CREATE(D) HISTORY:
LEARNING FROM THE PAST TO GUIDE THE FUTURE
ORIENTATIONHouston @ 29° 45’ 0” N
NS
W
E
21 JUNE
21 DEC
29°
45’ N
83°
47° 24’
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GULF COAST GREEN 2013CREATE(D) HISTORY:
LEARNING FROM THE PAST TO GUIDE THE FUTURE
ORIENTATIONHouston @ 29° 45’ 0” N
N
E
S
W21 JUN
21 DEC
21 JUN
83°
21 DEC 47° 24’
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GULF COAST GREEN 2013CREATE(D) HISTORY:
LEARNING FROM THE PAST TO GUIDE THE FUTURE
NATURAL VENTILATION
WIND DRIVENCROSS-FLOW + VENTURI EFFECT
BUOYANCY DRIVENCHIMNEY OR STACK EFFECT
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GULF COAST GREEN 2013CREATE(D) HISTORY:
LEARNING FROM THE PAST TO GUIDE THE FUTURE
NATURAL VENTILATION
DOUBLE HUNG WINDOW ATTIC FAN
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GULF COAST GREEN 2013CREATE(D) HISTORY:
LEARNING FROM THE PAST TO GUIDE THE FUTURE
NATURAL VENTILATION
HOUSTON 1912
CITY LIMITS CIT
Y L
IMIT
S
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GULF COAST GREEN 2013CREATE(D) HISTORY:
LEARNING FROM THE PAST TO GUIDE THE FUTURE
DAY LIGHTING
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GULF COAST GREEN 2013CREATE(D) HISTORY:
LEARNING FROM THE PAST TO GUIDE THE FUTURE
ROOFS
WALLS
WINDOWS
WOOD
MASONRY
GLASS
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GULF COAST GREEN 2013CREATE(D) HISTORY:
LEARNING FROM THE PAST TO GUIDE THE FUTURE
HEAT GAIN ON ROOFS, WALLS, WINDOWS
21 JUN 83°
SUMMER SUN ON ROOF AND WALLS
WINDOW / WALL RATIO
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GULF COAST GREEN 2013CREATE(D) HISTORY:
LEARNING FROM THE PAST TO GUIDE THE FUTURE
INSULATION
INSULATION
INSULATION
VENTILATION
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GULF COAST GREEN 2013CREATE(D) HISTORY:
LEARNING FROM THE PAST TO GUIDE THE FUTURE
WALL TYPES
SOLID MASONRY VENEER MASONRY WOOD FRAME
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GULF COAST GREEN 2013CREATE(D) HISTORY:
LEARNING FROM THE PAST TO GUIDE THE FUTURE
LOAD BEARING MASONRY
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GULF COAST GREEN 2013CREATE(D) HISTORY:
LEARNING FROM THE PAST TO GUIDE THE FUTURE
LOAD BEARING MASONRY
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GULF COAST GREEN 2013CREATE(D) HISTORY:
LEARNING FROM THE PAST TO GUIDE THE FUTURE
SUMMATION
1. Understand the site and climateOrientationNatural ventilation
2. Investigate low-tech practices used in periods before dependence on electricity and
mechanical systemsNatural ventilationMaterial selection Day lighting
3. Evaluate building systems and materials to control heat gainRoof constructionExterior wall construction: amount of wall, amount of openings,
resistance to moisture & heat penetration
Windows: orientation for ventilation, lightingLocal materials: durability, availability
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This concludes The American Institute of Architects Continuing Education Systems Course
GULF COAST GREEN 2013CREATE(D) HISTORY:
LEARNING FROM THE PAST TO GUIDE THE FUTURE
FIN