FIELD TESTING OF A CONCRETE BOX CULVERT

Field instrumentation and testing of a functional cast-in-place reinforced concrete culvert in Sarpy County, Nebraska, are described in this paper. The culvert is a double-cell box on a 35 deg skew. Each cell's inside dimensions are 12 ft by 12 ft. Permanent soil fill height is 8.5 ft. Construction began in November 1987 and ended in April 1988. Measurements of soil pressures, strains, deflections, and settlements were recorded both during and after construction. The soil pressures observed to date resulting from soil and truck loading are reported, and comparisons of measurements, theory, and AASHTO specifications are provided.