In the operation maneuvers in a drydock blocks of reinforced concrete are used, these pieces are placed in the low part of the installation and they are used as base as rest of the boats that are constructed or repaired in this area. The use of these elements dates from 30 years old and nowadays it presents signs of a great deterioration. In this work the exposition and service conditions, which it has been exposed during his utility life, are analyzed. The observed pathologies are discussed and identified and is determined the damage level of the elements, Finally recommendations of design for the new structures are made in attention to the prolongation of the durability of the same ones.
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