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

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Thank You for Your Time!

This concludes The American Institute of Architects

Continuing Education System Program