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Presentation given at an APS panel discussing whether green schools need to be LEED schools
Citation preview
3/16/2010
1
Green Schools/LEED SchoolsJulie Walleisa, AIA, LEED AP
CERTIFIED
CERTIFIED
GOLD
GOLDGOLD
SILVER
200+ person multidisciplinary firmOffices in NM, TX, NV
Green building = Actually gets resultsIntentional3rd party verified
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REALITY
GOALSaccountability
calculations
trained reviewers
Continuous improvement
deliverablesvetted
rigor
Should you use an established system and structure like LEED, or create your own?
flexible
Framework for making decisions
Minimum expectations
Peer review
Strict deliverables
Comparability
Energy and water savings
Better investment
Better learning environment
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Case Study ‐ RRPS
Lessons Learned
N
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Separatetraffic
ShelterPlayground
Supervise
Adjust to topography
Future expansion
Efficientcirculation
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Stapleton ES
Maggie Cordova ES
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Design
Original prototypes:
Standard plumbing fixtures
Typical insulation and materials
Rooftop packaged units
‐ Low cost‐ Simple maintenance
T8 fluorescent lighting
Physical Changes:
Increased insulationR‐24 walls, R‐38 roof
Efficient low‐e glazing
High‐efficiency mechanical units
Waterless urinals
Dual‐flush toilets
Faucet restrictors
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Physical Changes:
Low‐emittingmaterials
RecycledmaterialsAluminum, steel, insulation, gypsum board, ceiling tile, concreteCeramic tile, toilet partitions
RegionalmaterialsCMU, concrete, asphalt, gravel, plantsGypsum board, sheathing
Process Changes:Construction Waste Recycling
IAQ Management Plan
Commissioning
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Sandia Vista ES
Cielo Azul ES
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Cost/Benefit Study
Premium and paybackWater and energyHard and soft costsOwnerArchitectContractor
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Cost:Stapleton Cordova Sandia Vista Cielo Azul$9.3M $10.2M $14.1M $14.7M
Size: 73,000sf 76,000sf 85,500sf 85,500sf
Site: $150,000 $109,000 $540,000 $1,076,000
Escalation 2004 to 2007: 1.25x
Adjusted: $160.22/sf original $162.31/sf new
1.3% premium
Savings:Utility bills for originals vs models/calculations for newProjected savings on electricity, gas, water
$0.87/sf/yr$73,000 per school per year
2 year payback projected
Not factored in: Expedited schedule cost impactMore plumbing fixtures due to switch to IBC
Cost/Benefit Study
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Results
LEED Silver certifiedEnvironmental Impact
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Indoor water conservation: actual numbers
5 year savings: 1M to 1.8M gallons
0.000
1.000
2.000
3.000
4.000
5.000
6.000
7.000
8.000
9.000
10.000
ESES MCES CAES SVES
87,5
70 s
f 78,6
10 s
f
85,5
13 s
f
85,5
13 s
f Gal
.
Water & Sewer ConsumptionGal. per Sq. Ft.
7.4
9.3
5.0 4.9
$0.54
$0.55
$0.56
$0.57
$0.58
$0.59
$0.60
$0.61
$0.62
$0.63
$0.64
$0.65
ESES MCES CAES SVES
87,5
70 s
f
78,6
10 s
f
85,5
13 s
f
85,5
13 s
f
Elec. ConsumptionRate per Sq. Ft.
Portables
Evening/weekend use
First 12 months
Commissioning issues
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0
100
200
300
400
500
600
700
MCES ESES CAES SVES
481
610.5
252196
Staff Sick Days2008 ‐ 2009 SY
Already seeing:
Water savingsElectricity savingsReduced teacher absenteeism
Limitations:Gas usage not yet clear1st year data is incomplete
Commissioning during part of first year
Need 2‐3 years of data for it to be meaningful
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Green building doesn’t happen accidentally
LEED costs are small compared
to the life cycle benefit
Objective, 3rd party verification is crucial to success
LEED continues to evolve
APS can:
Guide teams
Track resultsContinue to improve
Julie Walleisa, AIA, LEED [email protected]