Net-zero may seem beyond the budgets of most K-12 school districts, but a couple of trailblazers have found the means to construct schools designed to produce as much power as they use.
The new $20 million, 88,693-sf Colonel Smith Middle School in Ft. Huachuca, Ariz., takes daylighting to the highest level. Every regularly occupied space has a window, skylight, or clerestory glazing for layered daylighting. To hold down the cooling load, the building obtains most of its sunlight from the north sky through clerestory windows. On the south exterior wall, exterior overhangs prevent direct solar exposure in the summer, while allowing passive solar heating in winter. Locker rooms and other support spaces have shaded high-wall translucent fiberglass panels to provide privacy. Lighting energy use is expected to be 80% less than that of a standard school building.
Energy is recovered from locker room exhaust to pre-heat or pre-cool supply air delivered to locker rooms. Solar panels heat domestic water for locker rooms and the kitchen. PVs were obtained through a power purchase agreement. “We didn’t have net-zero in mind when we were starting out,” notes Dr. Ronda Frueauff, Superintendent of the Ft. Huachuca Accommodation School District. That changed as the design committee evaluated the affordability of each green element. Only geothermal was ruled out as cost-prohibitive.
Geothermal is, however, a key component of the Lady Bird Johnson Middle School in Irving, Texas, with 530 geothermal wells and 105 water-source heat pumps. The school is powered by 2,988 rooftop solar panels and 12 wind turbines. Opened in August 2011, the $29 million, 152,000-sf school cost about 12% more to build than one of traditional construction. School officials expect to recoup their investment in 10-12 years.
“We didn’t have net-zero in mind when we were starting out.”
--Dr. Ronda Frueauff, Superintendent of the Ft. Huachuca Accommodation School District.
Both schools incorporate green features into lesson plans. The Texas school features museum-type displays along the main hallway highlighting geothermal, solar, and wind technology, along with water efficiency. Students can get a close-up view of the PVs from a roof observation deck.
Getting to net-zero is not easy, but the promise of eliminating energy bills and using state-of-the-art technology as a learning lab can make a compelling case to reach for net-zero. +
Related Stories
Urban Planning | Apr 12, 2023
Watch: Trends in urban design for 2023, with James Corner Field Operations
Isabel Castilla, a Principal Designer with the landscape architecture firm James Corner Field Operations, discusses recent changes in clients' priorities about urban design, with a focus on her firm's recent projects.
3D Printing | Apr 11, 2023
University of Michigan’s DART Laboratory unveils Shell Wall—a concrete wall that’s lightweight and freeform 3D printed
The University of Michigan’s DART Laboratory has unveiled a new product called Shell Wall—which the organization describes as the first lightweight, freeform 3D printed and structurally reinforced concrete wall. The innovative product leverages DART Laboratory’s research and development on the use of 3D-printing technology to build structures that require less concrete.
Market Data | Apr 11, 2023
Construction crane count reaches all-time high in Q1 2023
Toronto, Seattle, Los Angeles, and Denver top the list of U.S/Canadian cities with the greatest number of fixed cranes on construction sites, according to Rider Levett Bucknall's RLB Crane Index for North America for Q1 2023.
University Buildings | Apr 11, 2023
Supersizing higher education: Tracking the rise of mega buildings on university campuses
Mega buildings on higher education campuses aren’t unusual. But what has been different lately is the sheer number of supersized projects that have been in the works over the last 12–15 months.
Architects | Apr 10, 2023
Bill Hellmuth, FAIA, Chairman and CEO of HOK, dies at 69
William (Bill) Hellmuth, FAIA, the Chairman and CEO of HOK, passed away on April 6, 2023, after a long illness. Hellmuth designed dozens of award-winning buildings across the globe, including the Abu Dhabi National Oil Company Headquarters and the U.S. Embassy in Nairobi.
Contractors | Apr 10, 2023
What makes prefabrication work? Factors every construction project should consider
There are many factors requiring careful consideration when determining whether a project is a good fit for prefabrication. JE Dunn’s Brian Burkett breaks down the most important considerations.
Mixed-Use | Apr 7, 2023
New Nashville mixed-use high-rise features curved, stepped massing and wellness focus
Construction recently started on 5 City Blvd, a new 15-story office and mixed-use building in Nashville, Tenn. Located on a uniquely shaped site, the 730,000-sf structure features curved, stepped massing and amenities with a focus on wellness.
Smart Buildings | Apr 7, 2023
Carnegie Mellon University's research on advanced building sensors provokes heated controversy
A research project to test next-generation building sensors at Carnegie Mellon University provoked intense debate over the privacy implications of widespread deployment of the devices in a new 90,000-sf building. The light-switch-size devices, capable of measuring 12 types of data including motion and sound, were mounted in more than 300 locations throughout the building.
Affordable Housing | Apr 7, 2023
Florida’s affordable housing law expected to fuel multifamily residential projects
Florida Gov. Ron DeSantis recently signed into law affordable housing legislation that includes $711 million for housing programs and tax breaks for developers. The new law will supersede local governments’ zoning, density, and height requirements.
Energy Efficiency | Apr 7, 2023
Department of Energy makes $1 billion available for states, local governments to upgrade building codes
The U.S. Department of Energy is offering funding to help state and local governments upgrade their building codes to boost energy efficiency. The funding will support improved building codes that reduce carbon emissions and improve energy efficiency, according to DOE.
