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Taconic Regional Offices Green
Building Success
LEED Building Renovation and Construction
Presented by: Susan L. Weaver, P.E., LEED AP – Barton & Loguidice, P.C.
Patrick Kozakiewicz, R.A., LEED AP – NYSOPRHP
The U.S. Green Building Council New York Upstate Chapter 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/CES for 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.
Before
After
Before
After
Learning Objectives
Taconic Regional Offices - Green Building Success /- NYSGBC36 / 2011
Description: Explore LEED design challenges,
lessons learned, and energy
performance, as well as occupant
satisfaction for the building renovation
of a former 1930s school transformed
into the Taconic Regional Offices.
Learning Units: 1
Credit Designations: LU|HSW|SD
Learning Objectives
Learning Objective 1: Integration of LEED design elements
Learning Objective 2: Describe some of the issues and
lessons learned during design and
construction phase.
Learning Objective 3: Investigate the actual energy
performance of HVAC and electrical
systems.
Learning Objective 4: Determine the affect of LEED design
elements on occupant satisfaction
with working environment.
Green Building Success
Original Plan – LEED Silver
Issues During Design/Construction “Lessons
Learned”
Energy Performance
Occupant Satisfaction
Original Plan
Target LEED Silver
Original LEED checklist Developed during design charrette
Initial expectations SS (no heat island; light pollution red; alternate public
transportation)
E&A (14% energy performance; no enhanced refrigerant management or green power)
IEQ (no increased vent; indoor pollution control; controllability-lights/HVAC; thermal comfort design)
IDP (LEED Accredited Professional only)
Sustainable Sites (SS)
Alternative transportation
Close to public transportation access
Created bicycle storage and changing room
Added outlet for electric vehicle and parking for
fuel-efficient vehicles
Reduced parking capacity by creating reinforced
turf for overflow parking
Sustainable Sites (SS)
Site development
Maximize open spaces
Stormwater design
Quantity control - created stormwater retention
ponds and used permeable pavers
Quality control –
Pervious PavementInterlocking pavers shown
Water Efficiency
Targeted all 5 points
Water efficient landscaping
Reduce by 50%
No irrigation – used native plants
Innovative wastewater technologies
Tertiary treatment on site (septic system)
Water use reduction
20% - low flow plumbing fixtures
30% - waterless urinals
Energy and Atmosphere (EA)
Optimize energy performance
Targeted 14% better performance than typical model (all electric heat pumps)
Vertical geothermal heat pump system
DCV for auditorium make-up air unit
Air-to-air energy recovery on make-up air units
Geothermal water-to-water heat pump to supply heating/cooling coils on make-up air units
Added insulation along perimeter walls and spray-on insulation in attic (R-15 batt and R-45 blown-in)
Replaced windows (U-value of 0.3 versus .86 existing)
Energy and Atmosphere (EA)
Enhancing commissioning
On-site renewable energy
Geothermal system (did not use this as it does not
meet the intent of the credit)
Added photovoltaic system on auditorium roof
Measurement and verification
Photovoltaic SystemPanels on auditorium roof
Materials and Resources (MR)
Construction waste management
Divert 50% from disposal
Recycled content
Rapidly renewable materials
Certified wood
Indoor Environmental Quality (IAQ)
Outdoor air delivery monitoring
Construction IAQ management plan
During construction/before occupancy
Low-emitting materials
Daylight and views – 75% of spaces
Controllability of lighting/HVAC
Task lighting and small heat pumps
Thermal comfort-design/verification
Room temperatures/occupant surveys
Typical Office SpaceInterior walls with windows for daylighting
Innovation and Design Process (ID)
LEED Accredited Professional
Later added on four additional credits
Green Building Success
Original Plan – LEED Silver
Issues During Design/Construction “Lessons
Learned”
Energy Performance
Occupant Satisfaction
Design Issues
Mitigation of standing water on site
Created stormwater retention ponds
Created reinforced turf overflow parking
Earned Innovative Credit – maximize open space
Stream restoration – daylighting retention ponds to
stream
Earned Protect/Restore Habitat Credit
Earned Innovative Credit – stream restoration
Stream
Design Issues
Building vacant for 8 years
Roof leaks into auditorium required more extensive
renovations
Structural repairs and replacements
New roof (added photovoltaics)
New floor (used cork floor)
Damaged/leaking windows
New energy efficient windows throughout
SHPO was kept involved and informed throughout project
Design Issues
Historical nature of building (SHPO)
Kept ceilings exposed
Heat pumps located in attic or basement
Coordination of trades (ductwork, sprinklers, lights,
conduit all exposed)
LED to spray-on insulation to ceiling of attic instead of
floor to condition space for HPS
New windows
SHPO agreed to window replacement
Found energy efficient windows with historic look
Existing HallwayUpper floor hallway area
Lessons Learned
Standing water on site
Extended schedule for site work
Extensive dewatering required
Used temporary retention ponds
Lessons learned
Don’t underestimate water issues on a flat site
Geothermal well drilling creates water
Anticipate required temporary measures
Geothermal Well DrillingExample of site disturbance
Lessons Learned
LEED and historical nature of buildingWindow replacements
Exposed ceilings
Integrated design
Lessons learned
Communication with interested parties essential
Coordination of trades
Exposed conduit, ductwork, sprinklers, lights
Research and discuss design alternatives to fit LEED
Changes during design easier with continued communication between trades
Green Building Success
Original Plan – LEED Silver
Issues During Design/Construction “Lessons
Learned”
Energy Performance
Occupant Satisfaction
Energy Performance
Building performance targeted for 14% then
21% improvement
Achieved 54% performance improvement
Modeled comparing geothermal with all electric heat
pump system (per guidelines)
Earned Innovative Design Credit
Photovoltaic system produces
Currently producing ~25 kWh per day
Mechanical RoomGeothermal pumps
Energy Performance
Annual building performance compared to similar buildings*
90 kBTU/SF per year for typical building
33 kBTU/SF per year for Taconic building
Summer average performance
0.63 kWh/SF
Winter average performance
0.87 kWh/SF
*Source: US Department of Energy – Building Energy Use Intensities Comparison
Green Building Success
Original Plan – LEED Silver
Issues During Design/Construction “Lessons
Learned”
Energy Performance
Occupant Satisfaction
Occupant Satisfaction
Thermal comfort-verification
Thermal comfort survey
Rating overall satisfaction Very satisfied
Satisfied
Somewhat satisfied
Neutral
Somewhat dissatisfied
Dissatisfied
Very dissatisfied
If dissatisfied - asked to indicate what contributes to dissatisfaction
Occupant Satisfaction
Thermal comfort survey results
84% of occupants rated space as neutral to very
satisfied
16% of occupants rated space as dissatisfied
Reasons for dissatisfaction - most in same area
Air blowing on occupant
Too cold – most complaints
Too hot
Conclusions
Building transformed due to integrated design
and cooperation
Lessons learned
Investigate existing conditions
Work with other agencies closely
Site disturbance for geothermal installation
Coordination of trades
Conclusions
Energy performance can be achieved
effectively with integrated design
Occupant satisfaction evident using LEED
design practices
Taconic Regional OfficesMain entrance
In order to maintain high-quality learning experiences, please access
the evaluation for this course by logging into CES Discovery and
clicking on the Course Evaluation link on the left side of the page.
Course Evaluations
Thank You for Your Time!
This concludes The American Institute of Architects
Continuing Education System Program
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