2016's Harry H. Edwards Industry Advancement Award winner proves that precast concrete enables the most innovative architectural designs while providing a highly energy-efficient and durable envelope. One of the most prominent features of the building is the white precast concrete façade, which dips dramatically away from the walkway along the eastern edge, then tips back out again, much like the buildings in a Dr. Seuss story. “One of the key design challenges was to create that curved façade from precast panels,” says David Bosch, engineering team leader for High Concrete Group. The curved load-bearing design was achieved by assembling flat, traditional precast concrete panels to form a complex faceted geometry. An interlocking structural system was embedded within the panels to eliminate the need for traditional precast concrete spandrel panels. “The resulting façade creates an aesthetic versatility that is unique to the project,” Bosch says.
Lancaster County Convention Center
Big building, small space
Established in 1718, Lancaster is the oldest inland city in the United States. Its town square can be traced back to 1730 when James Hamilton laid the city out in a traditional grid. Structures with lasting, historical value have been fixtures on the square for years. The central area has always been among the most densely developed parts of the city.
Certainly, constructing an intricate project, Lancaster County Convention Center, that would bring new architecture to an established, compact downtown would require imagination and thoughtful planning. Knowing that precast could solve many of the potential issues, architectural firm Cooper Carry engaged High Concrete Group LLC from the earliest planning stages.
The biggest obstacle consisted of working around the existing structures, many of which would be integrated into the new complex. It severely limited the size of the construction site. Because precast is manufactured off-site and delivered to the job as needed, it was preferable over field-built options that would have required significantly more space.
“Staging was a big issue,” explains Kevin Iddings, general manager of Midwest operations for High Concrete Group. “We developed a regimented schedule that allowed us to ship the precast pieces one at a time as they were needed. It helped avoid a backlog of materials in the field.”
In addition, High worked with the architect to simplify the job as much as possible, eliminating unnecessary pieces and identifying ways to reuse molds, thereby minimizing costs.