Dalle Structures: Concentration and Solutions

This lecture discusses the concentration of efforts in slabs on point supports, particularly above columns, leading to the phenomenon of punching, which must be avoided. Different configurations for slabs on point supports are presented, along with the concept of equivalent spans. Various structural solutions to combat punching are explored, such as the use of 'mushrooms' on columns. The lecture also compares historical and modern approaches to slab design, highlighting the importance of addressing effort concentration above columns. Equivalent spans for different slab configurations are detailed, emphasizing the need for thicker slabs on point supports compared to those on walls.