Case Study: UC Nippert Stadium Pressbox Renovation A Sustainable - PowerPoint PPT Presentation

Case Study: UC Nippert Stadium Pressbox Renovation A Sustainable Design and LEED Program Discussion Jake Taylor, PE, CEM, LEED AP BD+C, O+M Providing Innovative and Energy Efficient Engineering Solutions for over 70 Years

Learning Objectives 1. The attendees will understand the energy savings opportunities that exist with atypical projects such as a University Pressbox. 2. Attendees will learn which LEED-NC credits are feasible and more difficult given an atypical project type. 3. Attendees will review the energy efficient design processes used throughout the design of this project and how that affects the LEED process and associated credits. 4. Attendees will gain insight on the LEED difficulties associated with a project with nearly 60% glass on the exterior, operated for only a few days per year, and served by existing central plant systems

Agenda  The Team and Project  LEED Introduction and Process  LEED and Project Design  LEED and Project Construction  Conclusions

The Team  Owner University of Cincinnati  Architect of Record Heery International Design Architect Architecture Research Office   Civil Engineer Parsons Brinckerhoff  Landscape Architecture Vivian Llambi & Associates, Inc.  Structural Engineer THP Limited Inc.  M/E/P/FP Engineer Heapy Engineering  Commissioning Agent BC+E Engineering  Construction Manager Turner Construction Company

The Project  Complete demolition of existing pressbox  About 65,000 sf of newly constructed pressbox  6 floors

The Project  Intended for full occupancy 6/7 days per year  Special events held throughout the year in various areas  Concourse/concession area, club level lounges, catering areas, suites, and press areas.

LEED – Introduction 8 Program Prerequisites 100 Potential Credit Points +10 Bonus Credit Points Certification Levels: Certified: 40 to 49 points Silver: 50 to 59 points Gold: 60 to 69 points Platinum: 80 + points

LEED Eco-Charrette

LEED Eco-Charrette EAc1 credits were not counted on due to unknown  HVAC and lighting systems selection as well as overall glass percentage. Urban location made certain SS credits  more easily attainable.  Questionable site / LEED Project boundary didn’t allow some SS credits to be known for sure.  Additional Water Use Reduction points were unknown due to the types and locations of restrooms.  Most construction credits were sought after due to the possibility of limited attainable design credits.

Project Design  Early design Life Cycle Cost Analysis modeling was completed to evaluate:  Overall window areas (initial  HVAC Systems concept at 65%)  (1) VAV with reheat  LEED DES approach  (2) Two Pipe Fan Coils  Envelope Insulation Values  (3) VRF Fan Coils Proposed Baseline Wall 1 U-0.074 U-0.064 Wall 4 U-0.1075 U-0.064 Wall 5,7 U-0.0302 U-0.064 Curtain wall window (2,3,6) U-0.3693 U-0.55 Glass wall window 8 U-1.04 U-0.55 Glass wall window 9 U-1.00 U-0.55 Roof U-0.043 U-0.048

Project Design  Other design considerations that were modeled include:  Daylighting  Automatic shades – timer for off season days  Occupancy sensors  LED exterior/interior  Skylights or solar tubes (better than code min)  Better windows where clarity is not sacrificed  Improved flow fixture efficiency  VAV type controls on kitchen hoods  Demand control ventilation  Natural ventilation  Radiant floor heat on non fin tube units  Exhaust energy recovery  Better roof insulation

Project Design  Final Design Included: INITIAL Proposed Baseline  Natural and Displacement Wall 1 U-0.074 U-0.064 Ventilation where appropriate Wall 4 U-0.1075 U-0.064 Wall 5,7 U-0.0302 U-0.064  75% LED Lighting Curtain wall window (2,3,6) U-0.3693 U-0.55 Glass wall window 8 U-1.04 U-0.55  Low-flow fixtures and fittings Glass wall window 9 U-1.00 U-0.55 Roof U-0.043 U-0.048  Improved Envelope per tables FINAL Proposed Baseline  Enthalpy Economizers Wall 1 U-0.064 U-0.064  Demand Controlled Wall 4 U-0.064 U-0.064 Wall 5,7 U-0.0302 U-0.064 Ventilation Curtain wall window (2,3,6) U-0.3693 U-0.55 Glass wall window 8 U-1.04 U-0.55 Glass wall window 9 U-0.3693 U-0.55 Roof U-0.035 U-0.048

Project Design and LEED  LEED Project Boundary

Project Design and LEED LEED Occupant and Usage Data  (2,050 gameday visitors * 7 gamedays per year + 50 non-gameday visitors * 40 non-gamedays per year) / 47 total days in operation = 348 average visitors per day (200 gameday FTE * 7 gamedays per year + 4 non-gameday FTE * 40 non-gamedays per year) / 47 total days in operation = 33 average FTE per day Average building users per day = 348 average visitors per day + 33 average FTE per day = 381 average users per day

Project Design and LEED  SSc2 Development Density and Community Connectivity

Project Design and LEED SSc1 Site Selection   SSc3 Brownfield Redevelopment  Lead and Asbestos were present in the existing building and was remediated everywhere as part of this project

Project Design and LEED  SSc5.2 Site Development, Maximize Open Space

Project Design and LEED  SSc7.1 Heat Island Effect, Non-Roof

Project Design and LEED  SSc7.2 Heat Island Effect, Roof

Project Design and LEED  WEp1/c3 Water Use Reduction  The project contained 1.28 gpf water closets, a combination of 0.5 gpm manual and automatic lavatories, and a mix of 0.5 gpf and waterless urinals.  The project also contained mixes of public, private, and out-of-building restrooms.

Project Design and LEED  EAp3/c4 Fundamental and Enhanced Refrigerant Management

Project Design and LEED  IEQp1 Minimum IAQ Performance  Naturally ventilated areas as well as those served by a displacement ventilation system allowed for less needed mechanically cooled outdoor air and thus offered energy savings.

Project Design and LEED IEQc1 Outdoor Air Delivery Monitoring   CO2 sensors  IDc1.2 Low-Mercury Lighting  Large quantities of LED lighting on interior and exterior made this credit feasible.

Project Design and LEED IEQc6.1 Controllability of Systems, Lighting and Thermal Comfort 

Project Design and LEED IEQc8 Daylight and Views  IEQc8.2 was able to be earned at 91%  IEQc8.1 was unable to be earned due to too large of windows  without any type of view preserving automated shades.

Project Design and LEED  IEQc8 Daylight and Views

Project Design and LEED 37 points earned after the design submittal

Project Construction and LEED  A LEED Construction Kickoff Meeting was held where all construction requirements were discussed.  All product submittals were reviewed and documented for LEED throughout construction.  Bi-weekly LEED Construction Status discussions were had by the team to maintain progress.

Project Construction and LEED  MRc2 Construction Waste Management  Large amounts of diverted demolition waste made the earning of this credit more likely.  EAc3 Enhanced Commissioning  This credit was not able to be earned after a clarifying comment from GBCI noted that Enhanced Commissioning must include all DES equipment when the building is greater than 50,000 sf and more than 20% of the building energy comes from the district energy system.

Project Construction and LEED  MRc7 Certified Wood  This credit was re-evaluated during construction and removed as a requirement since additional points weren’t needed for Silver and the cost premium was significant.  IEQc3.1 Construction IAQ Management, During Construction  This credit was removed from the project scope as the project completion date was later than anticipated and the point wasn’t needed for a new credit threshold or necessary for a buffer.  IDc1.4 Innovative Elevator Technology  The elevators selected eliminate the need for an elevator machine room within the building, thereby reducing building materials/resources. Save process energy associated with the elevator systems. Eliminate the use of hydraulic fluid within the elevator systems to reduce the associated environmental impact.

Project Construction and LEED MRc4/5 Recycled Content and Regional Materials 

Project Construction and LEED

Case Study: UC Nippert Stadium Pressbox Renovation Thank you! Providing Innovative and Energy Efficient Engineering Solutions for over 70 Years