Good design can prevent or partially inhibit the localized damage observed at the corners of the corbel. In particular,the formwork may be properly shaped to remove or smooth its sharp edge, and hence the precast concrete beam is free to deform without causing excessive damage in that zone of the corbel. Alternatively, L-shaped steel profiles may be grouted in correspondence to the upper corner of the corbel, designed along the lines of a conventional strut-and-tie approach, using local reinforcement details (Fig. 6). Closed hoops have been provided as shear and tensile reinforcements, and bushing sleeve couplings are set in place to connect the vertical threaded steel bars protruding into the precast concrete beam, thus avoiding their pullout in tension. Nevertheless, without changing the beam-column connection system and static scheme, none of these recommendations is able to prevent the brittle shear failure observed in the threaded bars (Fig. 12).