ABSTRACT
São Paulo Line 6 is the largest infrastructure Project currently underway in Latin America. A highlight of the Project is PUC Station as the caverns excavation with 250 m² are implemented not only on a full urbanized area but directly under a 40 m high building at 60 m deep in tropical residual soil. Historically, ground settlements and ground loss ratios in this type of geology in São Paulo are quite high and able to produce major impacts on the surrounding buildings. The subject of this article will be the presentation of the jet grouting ground improvement that enabled not only the excavation of the platform tunnels with a minimum impact at the surface infrastructure but also an acceleration of the Project schedule.
