Problem Andrews Air Force Base located in Maryland is perhaps most famous for being the home of the two Boeing aircraft that serve the President of the United States as Air Force One. In 1999, a two-inch deep dip developed in the primary runway for Air Force One, runway 1L/19R. An engineering investigation revealed the settlement was caused by water infiltrating the pavement system and transporting soil particles through a leaking culvert under the runway. The settled pavement needed to be reconstructed or repaired to restore operations of this essential runway, so the U.S. Air Force called URETEK. Analysis Many airport repair jobs are time-sensitive, but Andrews neces- sitates even faster repair because of its political significance. Complicating matters, however, Andrews experiences f

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