Fall Line Testing and Inspection, LLC, has chosen Tucson, Arizona as its national headquarters, the company reported.

The construction testing and inspection firm purchased a 10,000-square-foot building in Tucson at 3414 E. Elvira. Fall Line is an affiliate of Pittsburgh-based Paul C. Rizzo Associates, Inc.

Fall Line, which has a staff of about 30 engineers and technicians, recently completed testing for Missouri’s Taum Sauk Upper Reservoir Rebuild Project, which involved testing more than 3 million yards of concrete, the company reported. The Taum Sauk Upper Reservoir is the largest roller- compacted-concrete structure in North America.

The company also worked on the Tennessee Valley Authority-owned New Bear Creek Dam in Alabama and the Sallisaw Creek Watershed Spillway in Oklahoma. Fall Line staff members also are working on North Carolina’s Deep Creek and Catawba dams, the company reported.