'Virtually indestructible': Utah architect applies thin-shell dome concept for safer schools

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.

Building Design+Construction's monthly Market Intelligence Report offers a snapshot of the health of the U.S. building construction industry, including the commercial, multifamily, institutional, and industrial building sectors. This report tracks the latest metrics related to construction spending, demand for design services, contractor backlogs, and material price trends.

MFPRO+ New Projects | Apr 16, 2024

Marvel-designed Gowanus Green will offer 955 affordable rental units in Brooklyn

The community consists of approximately 955 units of 100% affordable housing, 28,000 sf of neighborhood service retail and community space, a site for a new public school, and a new 1.5-acre public park.

Construction Costs | Apr 16, 2024

How the new prevailing wage calculation will impact construction labor costs

Looking ahead to 2024 and beyond, two pivotal changes in federal construction labor dynamics are likely to exacerbate increasing construction labor costs, according to Gordian's Samuel Giffin.

Mexico’s TecSalud Health Sciences Campus is under design

Healthcare Facilities | Apr 16, 2024

Mexico’s ‘premier private academic health center’ under design

The design and construction contract for what is envisioned to be “the premier private academic health center in Mexico and Latin America” was recently awarded to The Beck Group. The TecSalud Health Sciences Campus will be located at Tec De Monterrey’s flagship healthcare facility, Zambrano Hellion Hospital, in Monterrey, Mexico.

Market Data | Apr 16, 2024

The average U.S. contractor has 8.2 months worth of construction work in the pipeline, as of March 2024

Associated Builders and Contractors reported today that its Construction Backlog Indicator increased to 8.2 months in March from 8.1 months in February, according to an ABC member survey conducted March 20 to April 3. The reading is down 0.5 months from March 2023.

Laboratories | Apr 15, 2024

HGA unveils plans to transform an abandoned rock quarry into a new research and innovation campus

In the coastal town of Manchester-by-the-Sea, Mass., an abandoned rock quarry will be transformed into a new research and innovation campus designed by HGA. The campus will reuse and upcycle the granite left onsite. The project for Cell Signaling Technology (CST), a life sciences technology company, will turn an environmentally depleted site into a net-zero laboratory campus, with building electrification and onsite renewables.

Codes and Standards | Apr 12, 2024

ICC eliminates building electrification provisions from 2024 update

The International Code Council stripped out provisions from the 2024 update to the International Energy Conservation Code (IECC) that would have included beefed up circuitry for hooking up electric appliances and car chargers.

Urban Planning | Apr 12, 2024

Popular Denver e-bike voucher program aids carbon reduction goals

Denver’s e-bike voucher program that helps citizens pay for e-bikes, a component of the city’s carbon reduction plan, has proven extremely popular with residents. Earlier this year, Denver’s effort to get residents to swap some motor vehicle trips for bike trips ran out of vouchers in less than 10 minutes after the program opened to online applications.

Laboratories | Apr 12, 2024

Life science construction completions will peak this year, then drop off substantially

There will be a record amount of construction completions in the U.S. life science market in 2024, followed by a dramatic drop in 2025, according to CBRE. In 2024, 21.3 million sf of life science space will be completed in the 13 largest U.S. markets. That’s up from 13.9 million sf last year and 5.6 million sf in 2022.