High Performing Buildings - Spring 2012 - (Page 57)

U n i v E r s i t y o f f l o r i D a ’ s W i l l i a m r . H o U g H H a l l B y J a s o n H e f f e l m i r e , P. e . , m e m B e r a s H r a e The graduate business studies building’s grand three-story open court can host special events and helps to visually orient visitors to the building. B U i l D i n g at a g l a n c E Energy-Efficient Design Although the university has been increasingly incorporating LEED guidelines since 2001, now requiring LEED Gold for new construction and major renovation, the university began using a more refined approach to pursuing LEED certification starting with this project. In lieu of chasing LEED points, the administration focused on energy-saving strategies that save long-term operation and maintenance costs without adding more upfront costs. The design team considered all available LEED criteria and modeled every system. The model was used by the design team and the university to make decisions about the project. Energy modeling was performed and revised at different phases. name university of florida William r. Hough Hall (graduate business studies building) location university of florida, gainesville, fla. owner university of florida Principal use Classroom and office building includes classrooms, seminar/meeting rooms, and study/lounge space for graduate business students, and staff offices and support spaces employees/occupants 980 occupancy 80% gross Square footage 70,388 ft2 Conditioned Space 65,994 ft2 distinctions/Awards leed gold, 2011 Associated Builders and Contractors excellence in Construction Awards eagle Award, 2010 Total Cost $21.5 million (includes impact, design fees) Cost Per Square foot $305.44 Substantial Completion/occupancy 2010 Courtesy of rowe Architects inc./george Cott, Chroma, inc. T he building is the latest result of the university’s decade-long focus on sustainable building. It combines modern architecture and a style designed to blend in with the surrounding historic buildings. In addition to its open spaces and ample daylighting, it offers classrooms, auditorium, 17 breakout study rooms for smaller groups, two lounges, lockers including showers, and a convenience store. These features have made the building one of the most popular on campus. It is designed in part for working professionals in the distancelearning MBA programs who travel to campus for classes on weekends. The initial schematic model was used to analyze various design decisions and systems to maximize energy efficiency. The model was modified at construction document completion to ensure the final proposed design met or exceeded the project’s LEED energy goals of 30%. The last model revision was an update with actual post-construction information for use in a 12-month comparison to metered energy use. (See Measurement and Verification section for further discussion.) The proposed building was designed to be 58% more efficient against the ASHRAE/IESNA Standard 90.1-2004 Appendix G baseline of the same building type. The post-construction model compared within the same range (59%). However, in reality Hough Hall uses 42% less energy than a similar building. This difference is due to the limitations of modeling certain building systems, and the facility being used in ways that were not considered in the modeling process. (See Lessons Learned.) Much of its energy savings come from low lighting power density, daylight harvesting, solar hot water heating, HVAC controls strategies and energy recovery, coupled with a high performance envelope. The university also signed a twoyear renewable energy contract to offset more than 35% of the building’s electricity use. lighting The majority of building lighting uses LED light fixtures and T5s to reduce lighting power densities Performing BuildingS 57 Spring 2012 HigH

Table of Contents for the Digital Edition of High Performing Buildings - Spring 2012

High Performing Buildings - Spring 2012
Commentary
Contents
Evie Garrett Dennis Campus
Magnify Credit Union South Lakeland Branch
Natural Resources Defense Council
What Makes Buildings High Performing
University of Florida’s William R. Hough Hall
Products
Advertisers Index

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