a master's thesis at the College of Engineering at the University of Basrah discussing (the practical study to investigate the treated deep concrete bridges)
The thesis presented by the student Walid Nadhum Hassan dealt with the structural repair of fifteen deep bridges made of reinforced concrete after its failure or damage as a result of shear stresses or bending stresses. nine
of the deep reinforced concrete bridges fail as a result of shear stresses and six others fail due to tensile stress. 
The result of tensile stresses after being tested to failure or withstanding 80% of the failure load.
The thesis aims to study the process to investigate deep concrete bridges.
The thesis concluded that the bridges treated with iron plates have a new tolerance of
(179.5%) damaged as a result of flexion stress, while the percentage in bridges damaged as a result of tensile stress is 168.4. Either in
In the case of bridges that have been repaired by carbon fiber chips, the percentage is 154.0% of
The original tolerances of bridges that were damaged as a result of bending stress, while up to 126.0% that were damaged as a result of shear stresses.