In the wake of natural disasters and school shooting incidents, education professionals across the country are looking for innovative ways to better protect children while they learn. A new building approach from Salt Lake City, Utah-based Leland A. Gray Architects is designed to contribute to that goal.
The firm is adapting the concrete thinshell structural approach for K-12 schools in Utah, according to a report by KSL.
The domed building, which the architect calls "virtually indestructible," uses an air-formed thin-shell concrete dome, along with a concrete stem wall. The system was created for assembly buildings such as schools, churches, and arenas, but some school disctricts are finding that it works well for K-12 school buildings, as well.
To build one of these structures, the roofing membrane is formed into a dome shape with a 31-ounce PVC material. A concrete ring on the stem wall is attached to an air form, and the membrane is inflated by air pressure to the size of the dome. Then, the underside of the membrane is sprayed with a urethane insulation to a depth of 3 inches over the entire surface of the membrane.
Steel reinforcing bars are then placed in an interlocking pattern across the dome's underside. Finally, according to Leland Gray's website: "The reinforcing steel is built up to 4 feet high around the base of the dome and sprayed with shot-crete. This process continues in 4-foot-wide bands from the base to the top of the dome. The concrete will be 8 to 10 inches thick at the base, tapering to 3 to 4 inches thick at the top."
Schools like this have already been built in Utah and in other places across the country, in part, because they are relatively inexpensive to build and they can save school districts money in utilities.
According to KSL, which did a story on dome schools in Locust Grove, Utah, "both the elementary and the high school in Locust Grove cost $94 a square foot to build. That's a deal, considering the price for school construction in the U.S. ranges from $150-$250 a square foot." In addition, the superintendent of the district told reporters that these buildings cut utility costs by 40%.
Read the full KSL story here.
Check out the video below to see what goes into a concrete thinshell dome, and what one looks like from the inside.
Related Stories
| Feb 23, 2011
Architecture Billings hold steady after two months of improving conditions
After showing positive momentum during the fourth quarter of 2010, the Architecture Billings Index (ABI) slipped almost four points in January. The January ABI score was 50.0, which is down from a reading of 53.9 the previous month, but still reflects stable demand for design services. Any score above 50 indicates an increase in billings.
| Feb 22, 2011
LEED Volume Program celebrates its 500th certified Pilot Project
More than 500 building projects have certified through the LEED Volume Program since the pilot launched in 2006, according to the U.S. Green Building Council. The LEED Volume Program streamlines the certification process for high-volume property owners and managers, from commercial real estate firms, national retailers and hospitality providers, to local, state and federal governments.
| Feb 22, 2011
HDR Architecture names four healthcare directors
Four senior professionals in HDR Architecture’s healthcare program have been named Healthcare directors.
| Feb 15, 2011
Iconic TWA terminal may reopen as a boutique hotel
The Port Authority of New York and New Jersey hopes to squeeze a hotel with about 150 rooms in the space between the old TWA terminal and the new JetBlue building. The old TWA terminal would serve as an entry to the hotel and hotel lobby, which would also contain restaurants and shops.
| Feb 15, 2011
New Orleans' rebuilt public housing architecture gets mixed reviews
The architecture of New Orleans’ new public housing is awash with optimism about how urban-design will improve residents' lives—but the changes are based on the idealism of an earlier era that’s being erased and revised.
| Feb 15, 2011
LAUSD commissions innovative prefab prototypes for future building
The LA Unified School District, under the leadership of a new facilities director, reversed course regarding prototypes for its new schools and engaged architects to create compelling kit-of-parts schemes that are largely prefabricated.
| Feb 15, 2011
New 2030 Challenge to include carbon footprint of building materials and products
Architecture 2030 has just broadened the scope of its 2030 Challenge, issuing an additional challenge regarding the climate impact of building products. The 2030 Challenge for Products aims to reduce the embodied carbon (meaning the carbon emissions equivalent) of building products 50% by 2030.
| Feb 15, 2011
New Urbanist Andrés Duany: We need a LEED Brown rating
Andrés Duany advocates a "LEED Brown" rating that would give contractors credit for using traditional but low cost measures that are not easy to quantify or certify. He described these steps as "the original green," and "what we did when we didn't have money." Ostensibly, LEED Brown would be in addition to the current Silver, Gold and Platinum ratings.