
Note: This is one of three “amazing builds” highlighted in the September 2021 issue of Business Alabama magazine.
If youāre ever going to come face-to-face with a shark, Georgia Aquariumās āPredators of the Deepā gallery is a great place to do it.
One of the largest shark exhibits in North America, the 1.2-million-gallon tank houses several varieties of shark, viewable both from the outside and, if youāre a real adventurer, via a cage thatās lowered into the water and moved around the tank.
Birmingham-based Brasfield & Gorrie was general contractor for the $100 million expansion, which also included new entrances and exits, office spaces, retail spaces and a loading dock.
The centerpiece, though, is the shark tank, which after completion last fall has become a popular attraction at the aquarium.
āItās super-interesting, and sometimes youāve got to dig your nose out of the plans and the specs to appreciate what youāre doing,ā says Mark Crump, operations manager for Brasfield & Gorrie.
Crump, based at Brasfield & Gorrieās Atlanta office, is no stranger to work at the aquarium. He wasnāt there when his company built the original aquarium that opened in 2005, but he worked on the dolphin expansion that opened in 2010 and the sea lion exhibit that opened in 2015.
āPeople who only see me periodically assume Iām always at the aquarium, which is not quite true,ā Crump says. āThey also assume I know more about marine life than I do, that I studied marine biology in college, and thatās completely false. Iām very much a construction guy who just so happened to find myself in the aquarium world.ā
Aquarium construction demands its own set of rules
āYou have to have the base understanding, of course, in typical commercial construction before you even start,ā Crump says. āYou sort of build off of that to meet the needs of a unique, high-tech Georgia Aquarium.ā
First and foremost are the life support systems ā the saltwater pipes and filtration that keep the animals alive and well.
āIn any building youāre in other than an aquarium, thereās not nearly 10 million gallons of saltwater running through and getting filtered and returned to exhibits,ā Crump says. āItās a huge part of the piping, and thatās a completely different type of construction.ā
That saltwater also means selecting materials that donāt corrode easily, including fiberglass-reinforced plastic instead of steel and a type of concrete that helps protect the rebar.
The architect and contractor also must beware of where columns are placed and use animal-friendly building practices (for instance, the nuts and bolts are rounded-top acorn nuts, so itās not a projection on which an animal can impale itself).
And then there are the panels ā the only thing protecting patrons from the water and deep-sea creatures. āYouāre looking through pieces of transparent acrylic, 5-10 inches thickness depending on the panel,ā Crump says. āThe shark exhibit has what I understand is a one-of-a-kind half-dome panel, half of a domed room underneath the water. Itās very complex. That panel took a long, long time to make.ā

Crump discovered something interesting during construction of the shark tank.
āI am afraid of sharks,ā he says with a laugh. āHaving been in close proximity of them for a while, Iām not interested in getting that close to the top of the tank.ā
And while he knows the exhibit is safe, he āpolitely deferredā an opportunity to jump in a cage and be fully immersed in the tank and exhibit. Heāll leave that to the aquariumās visitors.
āI have a strong and healthy fear of sharks,ā he says.