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
| Oct 5, 2012
2012 Reconstruction Award Bronze Winner: DPR Construction, Phoenix Regional Office, Phoenix, Ariz.
Working with A/E firm SmithGroupJJR, DPR converted a vacant 16,533-sf one-time “adult-themed boutique” in the city’s reemerging Discovery Triangle into a LEED-NC Platinum office, one that is on target to be the first net-zero commercial office building in Arizona.
| Oct 5, 2012
2012 Reconstruction Award Bronze Winner: Pomeroy Senior Apartments, Chicago, Ill.
The entire interior of the building was renovated, from the first floor lobby and common areas, to the rooftop spaces. The number of living units was reduced from 120 to 104 to allow for more space per unit and comply with current accessibility requirements.
| Oct 5, 2012
2012 Reconstruction Award Bronze Winner: Walsh Group Training and Conference Center, Chicago, Ill.
With its Building Team partners—architect Solomon Cordwell Buenz, structural engineer CS Associates, and M/E engineer McGuire Engineers—Walsh Construction, acting as its own contractor, turned the former automobile showroom and paperboard package facility into a 93,000-sf showcase of sustainable design and construction.
| Oct 5, 2012
2012 Reconstruction Award Silver Winner: 220 Water Street, Brooklyn, N.Y.
The recent rehabilitation of 220 Water Street transforms it from a vacant manufacturing facility to a 134-unit luxury apartment building in Brooklyn’s DUMBO neighborhood.
| Oct 5, 2012
2012 Reconstruction Award Silver Winner: Residences at the John Marshall, Richmond, Va.
In April 2010, the Building Team of Rule Joy Trammell + Rubio, Stanley D. Lindsey & Associates, Leppard Johnson & Associates, and Choate Interior Construction restored the 16-story, 310,537-sf building into the Residences at the John Marshall, a new mixed-use facility offering apartments, street-level retail, a catering kitchen, and two restored ballrooms.
| Oct 4, 2012
2012 Reconstruction Awards Silver Winner: Allen Theatre at PlayhouseSquare, Cleveland, Ohio
The $30 million project resulted in three new theatres in the existing 81,500-sf space and a 44,000-sf contiguous addition: the Allen Theatre, the Second Stage, and the Helen Rosenfeld Lewis Bialosky Lab Theatre.
| Oct 4, 2012
2012 Reconstruction Awards Gold Winner: Wake Forest Biotech Place, Winston-Salem, N.C.
Reconstruction centered on Building 91.1, a historic (1937) five-story former machine shop, with its distinctive façade of glass blocks, many of which were damaged. The Building Team repointed, relocated, or replaced 65,869 glass blocks.
| Oct 4, 2012
2012 Reconstruction Awards Gold Winner: Rice Fergus Miller Office & Studio, Bremerton, Wash.
Rice Fergus Miller bought a vacant and derelict Sears Auto and converted the 30,000 gsf space into the most energy-efficient commercial building in the Pacific Northwest on a construction budget of around $100/sf.
| Oct 4, 2012
2012 Reconstruction Award Platinum Winner: Building 1500, Naval Air Station Pensacola Pensacola, Fla.
The Building Team, led by local firms Caldwell Associates Architects and Greenhut Construction, had to tackle several difficult problems to make the historic building meet current Defense Department standards having to do with anti-terrorism, force protection, blast-proofing, and progressive collapse.
| Oct 4, 2012
2012 Reconstruction Awards Platinum Winner: City Hall, New York, N.Y.
New York's City Hall last received a major renovation nearly a century ago. Four years ago, a Building Team led by construction manager Hill International took on the monumental task of restoring City Hall for another couple of hundred years of active service.
