Structural reinforcement using telescopic joists by MecanoViga in a fire-damaged floor structure in a building located in the La Mina neighbourhood, on Occident Street in Sant Adrià de Besòs, consisting of a ceramic joist floor system. The work consisted of the demolition of the infill blocks between joists to install the telescopic joists, followed by the construction of small transverse support elements to support the demolished rib.