Concrete-filled forms can offer a more economical and faster way to build temporary levees, as evidenced by the construction of a half-mile wall in South Sioux City, Neb. "They go in place so fast. We did just under half a mile in six hours," said Pat Boeshart, president and CEO of LiteForm Technologies. The 12,000-pound concrete wall sections can be easily installed along highways as flood-protection measures, and can also be stored for future use. The half-mile wall cost $60,000 compared to a 1.5-mile earthen wall that cost $1.6 million.

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