In its inaugural season in 2014, BB&T Ballpark in Charlotte, North Carolina set new records. It was the most visited Minor League Baseball venue of the season. Including the Triple-A National Championship Game, the Charlotte Knights welcomed 696,601 fans during their inaugural season in Uptown Charlotte with 31 sell-out crowds and leading all of Minor League Baseball in attendance.
In the case of the BB&T Ballpark where LEED certification was an objective, the LEED certification principles and life cycle analysis tools are some of the best references for monitoring the entire life of a facility.
The biggest challenge with a sports facility of this type is the seating components over occupied space which are concrete. As concrete moves, it cracks. It is in the areas that are not visible where problems may come later, possibly many years later. Key to a successful outcome is ensuring that the fans taking advantage of the spaces beneath are protected.
Tremco is the only company able to provide a comprehensive air barrier system, including fluid- and sheet-applied membranes, thruwall flashing, primers, termination mastics, high performance silicone and urethane sealants and transition assemblies.
Establishing a waterproof tie-in between the silicone-based glazing system and the urethane deck coating at the window-wall of the luxury boxes was going to be a critical aspect of the job. The polyehylene backing on sheet-applied air barrier membranes also is an adhesion challenge for most sealants. Since Tremco's products are formulated and tested to ensure compatibility and proven performance, the selection of these products eliminates risk for the contractor. Particularly on larger projects, this represents a significant benefits.
Tremco's TREMproof 6100 Hot Rubberized Asphalt provided the performance required within the budget parameters. Among other applications, it was used for waterproofing a double slab roof where a maintenance room was situated below. In addition, Strickland Waterproofing had a long and successful history using Tremco's hot-applied waterproofing system.
To reflect the character of uptown Charlotte, the brick and storefront window exterior features found on buildings in the area are combined with the stadium’s painted exposed steel structure. Tremco’s ExoAir® 120 Fluid-Applied Air & Vapor Barrier Membrane serves as the foundation for the air barrier system behind the brick, providing a monolithic, seamless membrane which ensures continuous integrity without gaps. ExoAir 110 Self-Adhered Air & Vapor Membrane is used as a transition membrane into door and window openings. Spectrem 1 Silicone Sealant was used at the connection from the air barrier to the window-wall of the luxury boxes and the punched window openings.
The Extra Step
Tremco’s Vulkem® low-VOC, low-odor polyurethane basecoat with tenacious adhesion to clean and dry concrete was an addition to the project late in the game. Not a lot of stadiums can afford to put a traffic coating on the outdoor elevated seating. The square footage on the treads and risers adds up quickly, but the traffic coating dresses up the ballpark and provides waterproofing. This ensures not only a good look but efficient protection, making it very affordable.
The roller-grade version of Vulkem 350NF was used on the project, making the application up the risers much easier than with a selfleveling material and it does not require priming. Its compatibility with other Tremco products where it abuts other transitions or penetrations of the structure such as floor-to-wall transitions, detailing and drainage areas eliminates concerns about cure inhibition or adhesion issues. Dymeric® 240FC Polyurethane Sealant, specially formulated for dynamically moving building joints, was used to provide flexible, durable, weather tight seals in the concrete.
Building a Tradition for Performance
Soon after its inaugural season came to a close, BB&T Ballpark was named a Winner in the 2014 ENR Southeast Awards program in the Sports/Entertainment category. ENR Southeast’s annual project excellence program and judges based their decisions on which projects represent the “best” construction and design achievements of the past year for the Southeast region.
The Charlotte Knights have now been selected to host the 29th annual Triple-A Baseball All-Star Game. The game, to be held during the week of July 10-13, 2016, has featured 86 players who have gone on to play in Major League All-Star Games.
The cheering, exuberant crowds have only just begun but the ballpark is ready to weather whatever Mother Nature or the fans bring its way.