net-zero site design: finn hill middle school
TRANSCRIPT
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net-zero site design: Finn Hill Middle School
At the end of this program, participants will be able to:
1. Evaluate building orientation both inside the building and outside as it relates to educational goals.
2. Evaluate building orientation both inside the building and outside as it relates to energy goals.
3. Understand the functions of educational landscape.
4. Understand the appropriate scale and texture of courtyard environments.
Anjali Grant, AIA LEED BD+C MahlumKas Kinkead, ASLA, RLA Cascade Design Collaborative
MAHLUM.COM CASCADEDESIGNCOLLAB.COM
©2011 MAHLUM | CDC
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©2011 MAHLUM | CDC
For most educational projects, site is a given.
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Denny Creekoutfall
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Seattle area
temperate heating climateno air-conditioningsun as a resource
Dallas
©2011 MAHLUM | CDC
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©2011 MAHLUM | CDC
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©2011 MAHLUM | CDC
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©2011 MAHLUM | CDC
Why a single-story school ?“Environmental & Adventure School curriculum includes an extensive focus on community and environmental stewardship and environmental / adventure education activities.”
©2011 MAHLUM | CDC
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“We want to be the most energy-efficient district in the state.”Lake Washington School District
©2011 MAHLUM | CDC
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Existing school, 89
School 4, 60
School 2, 43School 1, 44
School 3, 46
Finn Hill w/o PV, ~28
Baseline school, 46
Finn Hill w/ PV, ~18
$0
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0%
50%
100%
150%
200%
250%
300%
350%
0 20 40 60 80 100 120
PV
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Energy Use Index (kbtu/sf/yr)
school comparison & goals
44 School 1 One gas-fired furnace per classroom
43 School 2 Condensing boilers and central air handling units with hot water terminal heat
46 School 3 One gas-fired furnace per classroom
60 School 4 Natural ventilation via operable windows with perimeter hot water heating
source: ARUP
©2011 ARUP
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performance summary
©2011 ARUP
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MahlumArupCoughlin Porter LundeenCascade Design CollaborativeSSA
Lake Washington School District
integrated design
©2011 MAHLUM | CDC
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“baseline” energy use patternsGlass16%
Wall3%
Slab8%
Roof7%
Infiltration10%
Ventilation air56%
©2011 ARUP
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mechanical design: Arup
Heat pump with variable flow hot water loop, 240-400% efficiency
Fully ducted; ducts sized for ventilation air
Air heated with heat recovery ventilators and VAV boxes
Demand-controlled ventilation
All systems & plant sized for heating
No perimeter heating
©2011 MAHLUM
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Typical construction: R-10 2x6 metal stud wall with R-19 batt insulation
enhanced thermal envelope
As constructed: R-22 6” nominal structural insulated panel (SIP)
Wall3%
Roof7%
Infiltration10%
©2011 MAHLUM
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©2011 MAHLUM
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triple-glazing where needed
U 0.45 / R-2.2Typical aluminum double-glazed windows
U 0.34 / R-2.9Thermally broken frame with double-glazed, ‘warm-edge’ Argon-filled units
U 0.27 / R-3.7Thermally broken frame with triple-glazed, ‘warm-edge’ Argon-filled units
Glass16%
©2011 MAHLUM
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©2011 MAHLUM | CDC
Hard-working site
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solar radiation over the seasons
source: Hopper, Landscape Architectural Graphic Standards ©2011 MAHLUM | CDC
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regional shading periods
source: Olgyay, Design with Climate ©2011 MAHLUM | CDC
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carbon calculator
Center for Urban Forest ResearchPacific Southwest Research StationUS Forest Service
http://www.fs.fed.us/ccrc/topics/urban-forests/ctcc/
©2011 MAHLUM | CDC
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air flow patterns and landscaping
source: Olgyay, Design with Climate ©2011 MAHLUM | CDC
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© Marysville School District © K
elle
y Ta
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| D
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roup
landscape buffers
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©2011 MAHLUM | CDC
site design
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©2011 MAHLUM | CDC©2011 MAHLUM | CDC
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entry
©2011 MAHLUM | CDC
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galleryartist Susie Lee
©2011 MAHLUM | CDC
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windows adjacent to walkwaysabove 7 feet
4% of the floor area for ventilation10% of the floor area for cooling
motorized & controlled by DDC
©2011 MAHLUM | CDC
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workyard/electives
©2011 MAHLUM | CDC
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workyard/electives
©2011 MAHLUM | CDC
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commons/big steps
©2011 MAHLUM | CDC
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photo by Lake Washington School District
commons/big steps
©2011 MAHLUM | CDC
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© Kelley Tanner | DLR Group©2011 MAHLUM | CDC
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commons/big steps
©2011 MAHLUM | CDC
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commons/big woods
©2011 MAHLUM | CDC
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© K
elle
y Ta
nner
| D
LR G
roup
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©2011 MAHLUM | CDC
pod courtyards
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©2011 MAHLUM | CDC
scale
©2011 MAHLUM | CDC
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Vienna primary school, Helmut Wimmer
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our research team
Rogers, “An Analysis of Climatic Influences on Courtyard Design for Cold Climates.” http://www.collectionscanada.gc.ca/obj/s4/f2/dsk2/ftp01/MQ41768.pdf ©2011 MAHLUM | CDC
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©2011 MAHLUM | CDC©2011 MAHLUM | CDC
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pod courtyards
©2011 MAHLUM | CDC
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©2011 MAHLUM | CDC
classroom / shared learning
©2011 MAHLUM | CDC
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classroom / shared learning
©2011 MAHLUM | CDC
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pod raingardens
80% of the site runoff is treated by raingardens
©2011 MAHLUM | CDC
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©2011 MAHLUM | CDC
pod raingardens
©2011 MAHLUM | CDC
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©2011 MAHLUM | CDC
concept sketch by Cascade Design Collaborative
©2011 CDC
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©2011 MAHLUM | CDCphoto by Lake Washington School District
pod raingardens
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renewable energy
photo by Lake Washington School District
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capital cost ($/sf) plus intangible benefits
$0
$5
$10
$15
$20
$25
$30
$35
$40
$45
$50
envelope daylighting ventilation heat pumps photovoltaics
comfort productivityhealthmood
views: connect to outdoors
healthalertness
education
trees
comforthealthmood
education
©2011 MAHLUM | ARUP
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©2011 MAHLUM | CDC
conclusions
Our classrooms are getting smaller & more technology-focused.
Together can we:
give our teachers and students new opportunities for outdoor learning;
add valuable program space at lower cost;
let our kids expend energy and blow off steam;
tie our energy and operational goals to program and support learning.