It is common to see problems punching shear in flat slabs post-tensioned. Generally this type of problem is in the pillars.
The structural carbon fiber reinforcement may correct this problem in slabs normal and postensadas.
Our company has implemented these solutions in many parking lots where it is very common to see this type of solutions slabs.
Enlaces de interés:
Elementos Pre y Postensados, Manual de Diseño. Autor: José Bellido de Luna, Gerente General ElementaBDL.