The collapse happens due to the amount of people that were in the party, the floor slab was overloaded. The situation could have been avoided if there would have been a sign referring people that the room was designed for meetings only. Also, there should be another sign implying the maximum live load allowed in the space. To investigate this case I will propose to find out first what caused the collapse, what were the maximum people allow to occupy the space, the durability of the materials used to build this building, I will look through the specifications and structural plans to see if there’s any update or changes that could affect or exceed the DOB regulations.