10 Years of “Green” Projects at
NC State
Highlighting Two Projects:
Jordan Hall Addition
(2002-2006)
and
Eastern 4H Environmental Education Center
Conference and Recreation Hall
(2007-2010)
a
Lisa Maune, Architect, LEED AP
Assistant Director, Design and Construction Services
NC State University
March 2011
The built environment has a profound impact on our natural
environment, economy, health, and productivity.
In the United States alone, buildings account for:
• 72% of electricity consumption,
• 39% of energy use,
• 38% of all carbon dioxide (CO2) emissions,
• 40% of raw materials use,
• 30% of waste output (136 million tons annually), and
• 14% of potable water consumption.
More statistics on the built environment in the U.S. and the growing size of
USGBC membership and LEED are available in the Green Building Facts
document.
PREFACE:
In 2000, when NC State University began its $468 million dollar 2000 Higher Education Bond Program in
earnest, two projects were identified to utilize the Triangle J Council of Government’s High Performance
Guidelines version 2.0. Those projects were the Jordan Hall Addition, and the Leazar Hall Renovation.
At the time, the Triangle J’s building program was aimed at public facilities, and was intended to be a
“roadmap “ for the design and construction of efficient, cost-effective, durable, and environmentally
sound buildings in the Triangle. Since public buildings are a financial investment by taxpayers, as well
as buildings that are highly visible and symbolic in their communities, it was hoped public projects would
encourage the private sector to invest in Sustainable Design Principles.
Various rating systems have been developed to certify green building and construction, including
a
the U.S. Green Building Council’s (USGBC) Leadership in Energy and Environmental Design (LEED)
Green Building Rating System. LEED certification is a third-party validation of a building’s performance
in order to improve efficiency with which buildings and developments use resources while reducing
impacts on human health and the environment. In 2007, NC State’s Chancellor made a commitment that
all “major” projects, those over 20,000 gross square feet, would attain LEED Silver certification.
TIMELINE
1998 : Governor Hunt issued Executive Order 156 which “directed state agencies to develop and incorporate policies
and practices to preserve natural resources, conserve energy, eliminate waste and emissions, and lessen overall
environmental impact”
1999: NCSU approved the “Commitment to Environmental Sustainability – Guiding Principles” policy
1999 : Chancellor Mary Anne Fox appointed a campus “Sustainability Officer”
2000 : The University “Environmental Sustainability Task Force” was created
2002: NCSU advocacy groups of students, staff, and faculty was formed called the NC State Sustainability Coalition
2002 : First NCSU “Earth Day” celebration
2003: A Campus Environmental Sustainability Taskforce (CEST) created as a tool to implement the goals of Task Force
2004: An in-house sustainability assessment was undertaken to identify focus areas
2006: The first NCSU Environmental Assessment was released
2007: Signed the ACUPCC
2007: NCSU Chancellor commits that all new “major” projects to be LEED Silver -Certified
2008: First Director of Sustainability Office hired, now consists of full time staff of three, with several interns
2008: 15 staff achieve LEED AP
2009: Inaugural Greenhouse Gas Inventory (carbon footprint)
2009: Restructure CEST as an Administrative Advisory Committee (now reports to Board of Trustees)
2010: First Climate Action Plan
2010: First Strategic Energy Management Plan (87% GHG emission from energy)
2010: 1st LEED project completed
2011: Draft Sustainability Strategic Plan completed January(note: comprehensive plan looking across the focus areas of
academics and research, buildings, communications, energy and water, land use, materials and purchasing,
transportation, and waste reduction and recycling). CAP and Energy Management Plan are supplemental documents.
Mission/vision next slide…
2011: 8 additional LEED projects in progress
JORDAN HALL ADDITION
This building was funded by the 2000 Higher Education Bond Program
Building Statistics:
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•
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54,800 gross square feet, 46,000
net square feet
$16.324 million dollar project
Construction Completed 2006
Program Includes:
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View of southeast elevation from Faucette Drive
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View of Environmental Education Lab
The College of Natural Resources is the
building occupant, specifically the
Department of Forestry and
Environmental Resources
Three (52) seat classrooms
One (100) seat classroom
Teaching and research labs for CNR
and MEAS
Offices for teaching faculty and
extension faculty
Utilized Triangle J Council of Gov’t “High
Performance Guidelines” Ver.2.0
JORDAN HALL ADDITION
Design Team:
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BBH Design, PLLC - Architect
Stewart Engineering- Structural
RMF Engineering, Inc- PME
Lab Planning- GPR Planners
Collaborative, Inc.
Construction Team:
South elevation of Jordan Hall before Addition
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View looking south AFTER Jordan Hall Addition was constructed.
DH Griffin Construction Company
Trigon for special inspections
F&R and Kimley Horne for
geotechnical services
AEI, Affiliated Engineers, Inc
Commissioning Agent
Sustainable
Building Features
Site Selection
The NC State Physical Master Plan which guides
all planning and development for the University
showed the future addition to the Jordan Hall
building located on the parking lot located at the
corner of Western Boulevard and Morrill Drive.
The good news:
By designating an existing impervious surface for
a building site, the requirement to provide for
often expensive storm water solutions was not
present for this project (since it was not a
“greenfield “, pervious site).
Jordan Hall
Addition
The bad news:
Early in the design process, the use of the
parking lot was questioned by the design team
as replacement parking would have to be found
somewhere else on campus to make up for
these lost spaces, or the project would have to
pay $11,000 per space to Transportation, which
would be cost prohibitive for the project.
Over180 parking spaces were either
permanently or temporarily displaced by this
project, so a resolution to the parking problem
had to be found.
Master Plan location for Addition
Aerial Photograph with Final Building Configuration/Layout
PARKING OPTIONS
18
7
14
8
9
17
16
1
5
2
3
4
15
13
10
11
19
20
12
Parking Location Options Considered
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
3 SPACES
2 SPACES
3 SPACES
4 SPACES
3 SPACES
18 SPACES
10 SPACES
8 SPACES
5 SPACES
77 SPACES
23 SPACES
11 SPACES
30 SPACES
50 SPACES
100 SPACES
54 SPACES
22 SPACES
12 SPACES
150 SPACES
100 SPACES
H
PARKING OPTIONS
F
G
B
E
REYNOLDS DECK
C
D
A
Parking Solution to Achieve 186 Spaces
A
B
C
D
E
F
G
H
27 SPACES
40 SPACES
4 SPACES
19 SPACES
54 SPACES
8 SPACES
22 SPACES
12 SPACES
What makes this project “green”?
Initially, this project was to be delivered by the CM at Risk process, and a construction manager was hired who to
work with the Owner and Design team throughout the design process. We had a difficult time reconciling the cost
of work with them at DD’s, so we opted to bid single-prime.
FEATURES:
• Cast–in- place concrete structure - concrete and steel rebar have a high % of recycled material
• Low albedo membrane flat roof to reduce heat island effect
• Solar orientation and vertical glazing used to maximize day-lighting / views from 75% of spaces
• Lab and Office functions were separated physically and mechanically to improve control and reduce air flows
• Low VOC materials, including paint, carpet, ceiling tiles, adhesives and sealants
• Low- flow plumbing for 30% reduction
• Operable windows alls for a high degree of occupant control of comfort
• Shower facilities and bike racks were provided for those using bicycles as alternative transportation
• Recycling stations were integrated into the design
• Occupancy sensors utilized in public spaces
• Sun shading devices to minimize solar gain
• Chain of custody required for materials, etc, wood used was FSC certified
• Construction waste management – divert 75% of waste stream
• Monthly progress reports from contractor
• “Green” material submittal requirements
• Water efficient landscaping – no irrigation system
• Thermal comfort controllability
• Water Efficient Landscaping (drought tolerant)
• Storm water quantity and quality control on site
• Full building commissioning – AEI in this case
• Rapidly renewable materials, including bamboo sports flooring
• Recycled Content materials, including denim jean insulation
• Construction IAQ plan before and during occupancy
Jordan Hall - HPG Points
9%
1%
36%
17%
1.0 Management
2.0 Site
3.0 Water
4.0. Energy & Atmosphere
5.0 Materials & Resources
6.0 Indoor Environmental Quality
12%
7.0 Innovation & Design Process
18%
8%
Sustainable
Building Features
High Performance Guidelines
A section of the Jordan Hall Addition Project
Specifications Manual was entitled “High Performance
Guidelines” (Section 01352), which required the
contractor to adhere to and comply with certain
standards and practices in order to meet the
sustainability goals of the project. These guidelines
were based on the Triangle Region Public Facilities
High Performance Guidelines, Version 2.0, published
January 2001. The goal of this project was BRONZE
equivalent certification, which meant achieving 340427points. This project achieved 385 points.
Rendering of Aerial View of Northeast
These guidelines were included in the specifications to
guarantee the contractor who won the low bid on the
project would be a partner in the building process. By
having a specification section with requirements that
defined high performance definitions, materials
submittal requirements, reporting requirements,
documentation requirements, etc, the goals of
sustainability as defined were more apt to be met.
View from Southeast Elevation
Sustainable
Building Features
Cast-In Place Concrete Frame
Structure Utilized
Early in the project it was determined that using a
cast-in place concrete frame structure for the high
rise building’s superstructure would be more
economical than a steel frame structure. A by
product of this decision was that cast-in place
concrete is a building material that is extremely
“green” and can be made from a high % of recycled
material. Also, the reinforcing bars are made of
steel which can also be made from nearly 100%
recycled materials.
Sustainable
Building Features
Construction Waste
Management
The contractor was required to submit for
approval a construction waste
management plan which listed how each
material was to be handled on site. The
contractor was required to separate the
demolition and construction waste
streams so recycling could occur more
easily. The goal was to recycle 75% by
weight or volume of grading, land clearing
and site preparation materials. The goal
for other construction waste was 50% by
weight or volume. Waste from Jordan II
was sent to Reclamation Services, which
used to accept waste for recycling and
they even sorted it on-site.
Sustainable
Building Features
Indoor Air Quality Testing and
Monitoring
As part of the construction of the building, an
independent agent was used to determine the baseline
IAO test for maximum indoor pollutant concentrations,
and to do a preoccupancy test to assure the EPA’s IAQ
program criteria were met. Also, the sequencing of
finish material installation, and the changing of filters in
the duct work were all prescribed as part of the project.
Low Albedo Roof Material
Jordan Hall Addition incorporates a low albedo roof
membrane. The LEED requirement for non-vegetated roofs
states: Use ENERGY STAR Roof-compliant, high-reflectance
and high-emissivity roofing (initial reflectance of at least
0.65 and three-year-aged reflectance of at least 0.5 when
tested in accordance with ASTM E903 and emissivity of at
least 0.9 when tested in accordance with ASTM E408) for a
minimum of 75% of the roof surface.
LEED version 2.2, released in October 2005, is the first
national specification to use a
relatively new measure of reporting a cool roof's
properties. LEED 2.2 sustainable site
credit 7.2 states that to receive one point, building
owners should use a roof with a Solar
Reflective Index (SRI) of 78 over at least 75% of the roof
surface for roofs with slopes
less than 2:12. The new twist is SRI, a unit developed by
scientists at Lawrence Berkeley
National Laboratory. SRI incorporates reflectivity and
emissivity properties into one,
easy to read, standardized measure so that roof buyers
won't have to scratch their heads
and try to figure our if a high reflectivity and low
emissivity is better or worse than a
medium reflectivity and high emissivity.
Sustainable
Building Features
Operable Windows
Rarely used on lab buildings due to
outside air requirements, operable
windows were utilized in this project to
improve occupant control, and provide for
improved indoor air quality/quantity in
the office zone.
Integrated Sun-Shading
Devices on South Elevation
Partially successful – low eastern sun in
winter is not addressed by geometry of
shading devices. Interior light shelves
were also designed as a way to direct
more sunlight deeper in to spaces, but
were not integrated into the final project
due to cost constraints.
Day lighting and Views
Large windows were used to maximize the
infiltration of daylight deep into the spaces
on both the south and north elevations.
Studies have shown that occupants are more
productive in spaces that have day lighting
and views.
Sustainable
Building Features
ENERGY Reduction?
Energy Savings
Lab buildings are one of the most difficult
building types to reduce energy
consumption in because they are
notorious for being energy “hogs” due to
the constant cycling of air through the
fume hood/HVAC systems. Although this
building, like most others on campus, has
full DDC controls to allow for remote
control capability of the HVAC system,
methods for heat recovery such as
desiccant wheels, ice storage, and other
options were discussed, but in the end
were not incorporated due to funding
shortages.
Building Commissioning
The LEED for New Construction requires as a prerequisite that all buildings striving for certification
have basic building system Commissioning as part of the project. The Jordan Hall Addition had full
building commissioning . Systems to be commissioned are: Heating, ventilating, and Air
conditioning, chilled water system, hot water heating system, steam system, automatic temperature
control, and the emergency power supply system. A third party consultant determined the
functional protocols for all these systems. Once a baseline was established, final commissioning
occurred prior to building occupancy, with the goal of monitoring and correcting any system
deviations. One year after completion, prior to the one-year warranty ending, all systems were
checked for efficiencies, defects, and potential warranty repairs.
Sustainable
Building Features
Building Space Zoning
By separating the office/conference
functions from the lab functions, the
HVAC system can be zoned to allow
different air requirements to be
addressed, achieving some energy
savings, and improved comfort control.
Shower Facilities for Commuters
Shower facilities are rare on campus. LEED
stresses the importance of providing
shower and changing facilities to facilitate
commuters choosing alternative ways of
getting to work.
Sustainable
Building Features
Integrated Recycling Areas
Not successful due to lack of “buy in” by
current campus recycling/waste
management as an acceptable approach
to “managing “ recycling items.
Occupancy Sensors to Reduce
Lighting Power Demand
Routinely used on campus in “public”
spaces that don’t have anyone directly
responsible for turning out the lights.
Lighting accounts for a high % of total
building energy usage.
Sustainable
Building Features
Recycled Content/Regional
Material Usage
This project required the contractor to
provide a list of all products to be used on
the project with associated costs as a % of
the project costs . This documentation
assure that the projects meet the goals for
chain of custody, rapidly renewable
materials, regionally manufactured
materials, materials with a high recycled
or reclaimed content, wood used meets
FSC guidelines . Also a consideration is
that products are manufactured within
500 miles to minimize the need for
shipping materials great distances.
Another consideration is that the
materials contain no CFCs or HCFCs, and
that materials have low or no VOC offgassing per South Coast Air Quality
Management District rule 1168.
Sustainable
Building Features
Bike Racks for Commuters
A common feature of campus. Placement
of bicycle storage is usually located by
entrances, under cover if possible, and
near “hearths” or common gathering
areas.
Proximity to Campus and TTA
Bus Routes
Projects that can utilize alternative modes
of transportation can often take
advantage of that to achieve sustainable
points.
Low-Water Landscaping
Xeriscape or landscaping that requires no
or little watering was the goal of the
project. The landscape materials chosen
for Jordan Hall Addition kept that goal in
mind.
Jordan Hall Addition
Potential Shortcomings…
ITEMS DISCUSSED BUT NOT INCLUDED IN
THE PROJECT:
1.
Since first costs and utility costs are
funded by different sources, often the
long-term view is not taken.
2.
3.
4.
5.
6.
7.
8.
Heat recovery on HVAC system was not integrated – a
desiccant wheel and glycol loops were considered as
possible methods to recover heat on this project but
were not incorporated due to initial cost.
Larger exterior sun shading devices were designed,
but they were “Value engineered” to smaller depths.
Interior light shelves were “value engineered” out of
the project which would have improved daylight
transfer further into the building.
Interior blinds were “value engineered” out of the
project which would have aided in light control and
comfort.
Interior connections to the existing building were
“value engineered” out of the project, with exterior
bridges becoming the final solution.
Variable volume Phoenix valves at fume hoods were
replaced with less expensive constant volume valves.
Stainless steel ductwork continuous to roof fans were
“value engineered” out and replaced with partial SS
and galvanized ductwork.
To improve storm water quality as it leaves the site,
under parking pervious pavement areas were
investigated, but not incorporated into the project
due to lack of buy in by campus maintenance and lack
of enthusiasm by the campus storm water
community.
The good news is NC State’s first LEED Silver certified project is now complete.
Certification is expected March 2011.
Eastern 4H Conference and
Recreation Center
The Site
Raleigh
Location
This project is located in Tyrrell County, which is 2 ½ hours
east of Raleigh, off of Highway 64. The Eastern 4H
Environmental Education Center is a retreat/conferencing
and camp facility managed by the NC State University 4H
Extension program, as part of the University’s mission (see
below).
Wetlands
NC State University
MISSION STATEMENT:
The mission of North Carolina State University is to
serve its students and the people of North Carolina as
a doctoral/research-extensive, land-grant university.
Through the active integration of teaching, research,
extension, and engagement, North Carolina State
University creates an innovative learning environment
that stresses mastery of fundamentals, intellectual
discipline, creativity, problem solving, and responsibility.
Enhancing its historic strengths in agriculture, science,
and engineering with a commitment to excellence in a
comprehensive range of academic disciplines, North
Carolina State University provides leadership for
intellectual, cultural, social, economic, and
technological development within the state, the nation,
and the world.
Map showing location of the
Eastern 4H Environmental Education Center
eastern4Hcenter.org
Eastern 4H Environmental Education Center
Conference and Recreation Hall
This building was funded by a 2006 State Appropriation for Improvements to 4H Camps/ Centers statewide.
Building Statistics:
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20,800 gross square feet
$3.6 million dollar project
Construction Complete 2010
Program Includes:
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View from South at night
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View of the Entry at night
Occupants are 4H campers, those
attending conferences or retreats
at the Camp, and the local
community
Three (45) seat classrooms
High School-size gymnasium
Catering kitchen
Dining seating for 300 people
One office
Lobby, restrooms
Future exterior rock wall
Utilized USGBC’s LEED for New
Construction Guidelines 2.2
Eastern 4H Environmental Education Center –
New Conference and Recreation Building
Design Team:
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MHA Works (Greenville office)
- Architect
FDH Engineering - Structural
Springs Stoops McCullen
Engineering - PME
Rivers & Associates –
Civil/Landscape
Contractor:
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Centurion Construction Company
ECS of the Carolinas, LLP for
Special Inspections
AEI , Affiliated Engineers, Inc Commissioning Agent
CONTEXT: It was important to stay consistent
with the architectural context of the existing buildings
at the 4H Center.
The New Conference and
Recreation Hall
The gazebo by the
waterfront
The original conference and
dining building
Entrance to the
administrative
office building
The boat house
New Building
The Site
Bulls Bay
Site Selection
The NC State Master Plan
doesn’t address areas
located remote to the
Raleigh campus, so we
relied on a previously
completed master plan of
the entire Eastern 4H
Environmental Education
Center site to locate this
new building. It was
programmed as both a
place to provide shelter
from the rain when kids
are either playing field
activities, using the pool,
or using the shooting
ranges, as well as serving
the larger community for
various functions. It is
one of the largest
buildings in the county of
roughly 7,000 people.
Wetlands
What makes this project “green”?
Initially, this project was just under 20,000gsf, the definition of a “major” project, and off campus, so it wasn’t
necessarily subject to NCSU’s commitment to purse LEED silver certification. However, due to a strong
commitment from the NC State 4H Extension Program, early on the process, it was decided to go ahead and
pursue LEED silver certification . Also, because this camp one of five “4H Environmental Education Centers”
across the state, it was deemed an important goal of the project to use the opportunity to build a “green” project as
an education tool for the 4H campers in North Carolina.
FEATURES:
• Geothermal well system to optimize energy – there are nearly 250 wells for this project, located adjacent
to the geothermal well field that serves the rest of the camp
• Precast concrete tilt-up structure uses local materials
• Low albedo membrane flat roof (on gym) to reduce heat island effect
• Solar orientation and vertical glazing used to maximize day-lighting / views from 75% of spaces
• Low VOC materials, including paint, carpet, ceiling tiles, adhesives and sealants
• Low flow and bivalve plumbing for 30% reduction
• Construction waste management – divert 75% of waste stream
• Bimonthly LEED documentation progress reports from contractor
• LEED material submittal requirements
• Water efficient landscaping
• Thermal comfort controllability
• Occupancy sensors
•University’s “No Smoking” policy
•Walk-off mats at entrances to minimize particulates
• Water Efficient Landscaping (drought tolerant)
• Storm water quantity and quality control on site
• Full building commissioning – AEI in this case
• Rapidly renewable materials, including bamboo sports flooring
• Recycled Content materials, including denim jean insulation
• Construction IAQ plan before and during occupancy
• A bike rack is provided, as well as changing facilities
Sustainable
Building Features
Site Features
The programming intent for this building
was two-fold. It was designed to provide
shelter from inclement weather for
children attending summer camp when
they were playing on the fields , using the
pool, or using the shooting ranges nearby.
The large gymnasium space will serve well
as a multiple use space, as well other use
of the building was to provide classroom ,
catering kitchen and large meeting space
for the community at large to be able to
utilize.
The rendering shows how the rain garden
was meant to be a “site feature” for the
nearby entry and outdoor dining area. Onsite water treatment structures includes a
wet detention pond, and a planted rain
garden. Drought resistant plants were used
since no irrigation was provided.
Rendering depicts how the rain gardens and wet detention ponds
were used to control storm water on site.
The SITE DESIGN provides the following LEED
Credits:
•SS CREDIT 6.1: Storm water quality control
•SS CREDIT 6.2: Storm water quantity control
•MR CREDIT 7: Certified Wood (FSC)
Sustainable
Building Features
Tilt-up Concrete Construction
The concrete floor slabs are first poured, then the
wall formwork is put in place using a form release
agent to assure the walls release from the
formwork and slab. Then any thin break,
windows, form patterns, etc are added. Tilt-up
concrete structural panels were selected as the
structure because they are site formed using ready
mix concrete and allow for tall structures like
gymnasiums to be constructed quickly and
efficiently. The concrete is typically 3000psi with
a 4 inch slump. Panels are 8 inches thick, and are
lifted into place after 7 days of curing. They
panels are attached by welding attachment points,
and grout is injected.
The tilt-up concrete structure was also a good choice because of local materials , recycled materials, and
it provides for a highly-insulated wall system. Here you can see the in-bedded brick veneer at the entry
and base, and striations in the panel formwork to give a convincing wood siding appearance to the
exterior.
Sustainable
Building Features
LEED Credits
The Tilt-Up Concrete panel construction
provides the following LEED Credits:
•LEED Credit M 4 - Recycled Content
Recycled materials such as fly ash, slag cement,
silica fume, and recycled aggregates can be
incorporated into concrete, thereby diverting
materials from the landfill and reducing the use of
virgin materials.
The southeast elevation, which shows how the
lower tilt-up walls drop down the scale of the
higher gymnasium tilt-up walls.
•LEED Credit M 5.1 Local Materials
Wall panels are constructed with locally available
labor and materials.
•LEED Credit EA 1 Energy Performance
Energy savings are achieved in buildings by
combining the thermal mass of concrete with the
optimal amount of insulation in tilt-up walls.
Concrete acts as an air barrier, reducing air
infiltration, and saving more energy.
The camp director, Lee Scripture, mentioned
that the 3-phase power to the entire 4-H campus
went out over Christmas because of the severe
winter weather, and this building maintained a
Thetemperature
north elevationwith
is fullno
of HVAC.
windows, both for
62 degree
views and day lighting, which makes the space
very pleasant.
Sustainable
Building Features
Green Materials = LEED Credits
Two unusual materials were utilized in this
project: Ultra Touch Cotton Denim
insulation by CARAGREEN and Bamboo
Sports Flooring by PLYBOO.
The PLYBOO flooring provides the
following LEED Credits:
•IEQ CREDIT 4.3: Low-Emitting Materials
– Flooring
•MR CREDIT 6: Rapidly Renewable
Materials
•MR CREDIT 7: Certified Wood (FSC)
The CARAGREEN denim insulation
provides the following LEED Credits:
EQ Credit 4.4 : Low Emitting Materials
MR Credit 4 : Recycled Content ( 85%)
MR Credit 6 : Rapidly Renewable
Materials (85%)
Eastern 4H Environmental Education Center
Conference and Recreation Building
Site Points
LEED POINT DISTRIBUTION:
Water Efficiency
Points
7%
20%
Energy and
Atmosphere Points
25%
7%
Materials &
Resources Points
19%
22%
Indoor
Environmental
Quality Points
Innovation & Design
Process Points
Sustainable
Building Features
Photographs from the Ribbon
Cutting Ceremony, January 6, 2011
Sustainable
Building Features
Photographs from the Ribbon
Cutting Ceremony, January 6, 2011
Sustainable
Building Features
Other Photos
Eastern 4H Building
Potential Shortcomings…
ITEMS DISCUSSED, BUT NOT INCLUDED
IN THE PROJECT:
1.
2.
3.
4.
5.
Heat recovery on HVAC system was not integrated – a
desiccant wheel and a glycol loop were considered as
possible methods to recover heat on this project but
were not incorporated due to initial cost.
To improve storm water quality as it leaves the site,
under parking pervious pavement areas was
discussed, but not incorporated into the project,
which is a shame because the sandy soil here is ideal
for such as system.
N o grey water recovery or water reuse schemes were
utilized on the project due to limited funds. Cisterns
could be added later for local irrigation.
The underground ground source heat pump wells,
though efficient for many reasons, do not count
toward LEED energy credits due to the electric heat
pumps…although they exceed the ASHRAE 90.1
standards and achieved 7 points out of 10 for EA
Credit 1 for Optimize Energy Performance.
The asphalt drive and parking lot had to be VE’d out of
the project after bidding in order to award the
project, and were left as gravel…that work is now
being done with the help of DOT and University funds.
The two projects I’ve described today are very different building types, different sized
projects, in different locations, and will serve very different building occupants, yet
they have in common the goal of utilizing sustainable building design principles. Also,
both buildings are designed to fulfill specific goals of the mission of NC State
University. They share a campus-type setting, and they both had departments involved
that had a passion for pursuing a project with sustainable building principles, with the
goal of using the building as an environmental educational tool for the building
occupants, for years to come.
Questions?