Design and load testing of a full-scale Texas bridge deck utilizing embedded wire trusses for partial depth precast overhangs

The purpose of this research project was to investigate and evaluate the serviceability of partial depth precast overhangs for Texas bridge decks utilizing embedded wire lattice trusses. Current bridge deck overhangs constructed in Texas are formed cast in place through the use of overhang brackets and temporary formwork, this precast overhang solution aims to relieve the need for said brackets and temporary formwork. The first interior Precast Concrete Panel (PCP) is connected to the precast overhang through the use of partial-depth wire lattice trusses. The wire trusses continuously span over the facia girder while being embedded into the first interior PCP and precast overhang. The wire truss provides the required counter moment for screed and construction loading before the cast in place (CIP) layer of concrete is cast. This thesis outlines the full-scale deck designed, fabricated, and tested in the lab to evaluate the serviceability of partial depth precast overhangs utilizing embedded wire lattice trusses. The proposed precast overhang solution presented in this thesis is believed to reduce the cost of construction and expedite Texas bridge deck construction.