One of the largest general-aviation airports in the Midwest, Spirit of St. Louis Airport accommodates 1,000 takeoffs and landings daily. The airport opened in 1964 to relieve air traffic at Lambert Airport, the major airport in the St. Louis area. Over the years, the heavy plane traffic caused severe deterioration of the asphalt. In some sections, exposure to jet fuel turned the asphalt to mush. A devastating flood in 1993 that submerged the ramp under 9 feet of water aggravated the damage, making the apron unusable.
Tilt-up panels with elaborate designs are being used to build homes in the Rockies, retail shops on the West Coast, and hotels in Florida. The big news is the increasing popularity of tilt-up construction for large distribution centers, often vast structures ranging from several hundred to over a million square feet.