As the first LEED Gold-certified project in Kissimmee, this 54,000-square-foot facility used concrete tilt-up wall construction to reduced the project’s environmental impact. The number of panels was reduced by using multiple cranes during lifting. According to the Tilt-Up Concrete Association, the project has the world’s largest panel by area at 2950 square feet, the second heaviest panel ever lifted at 330,000 pounds, and the ninth widest panel at 56 feet 3 1/4 inches.
Originally intended to be built with precast concrete panels over a steel frame, the design and construction teams collaborated to analyze many alternative solutions and finally decided on tilt-up. These modifications not only allowed for a reduction in structural steel and a cleaner installation of insulation, but also reduced costs and saved time. Larger panels reduced the number of panel joints, limiting the potential for air and moisture intrusion, and improved the performance and health of the building.
Concrete also was used for the parking lots and sidewalks, increasing the solar reflectivity (SRI) of the hardscapes. The project’s concrete mixes included about 20% fly ash.
The finish face of the tilt-up panels was smooth, requiring no texture in its finish coating. The architect also insisted on 90-degree corners at all openings, no chamfers, and 45-degree sharp corners at the panel miter joints.
View all of the 2011 GreenSite projects at www.greensiteawards.com.