Falling of House Prefabricated Slabs

The falling of house prefabricated slabs can be caused by various factors, mainly including overloading, natural aging, and unauthorized modifications to the house structure.

Overloading: This is one of the common causes of prefabricated slab falling. When the load borne by the prefabricated slab exceeds its designed load-bearing capacity, it may break or even fall off. For example, in a prefabricated slab fracture incident that occurred in Fengshouchang, Guanba Town, Zhong County, Chongqing on April 11, 2024, the preliminary judgment was that the temporary accumulation of excessive load on the second-floor slab exceeded the load-bearing capacity of the prefabricated slab, resulting in brittle fracture and falling of the slab. Therefore, when using prefabricated slab houses, it is essential to strictly control the floor load, avoid stacking heavy items on the floor or carrying out large-scale decoration activities to prevent excessive pressure on the prefabricated slabs.

Natural aging: Prefabricated slab houses generally have a relatively short service life. As the years of use increase, the prefabricated slabs will gradually show signs of aging, such as concrete carbonation and steel bar corrosion. These aging phenomena will reduce the load-bearing capacity and durability of the prefabricated slabs, increasing the risk of falling. Therefore, for old prefabricated slab houses, regular safety inspections and maintenance should be carried out to promptly identify and address potential safety hazards.

Unauthorized modifications to the house structure: Unauthorized modifications to prefabricated slab houses, such as removing load-bearing walls or altering the house structure without professional design and construction, may disrupt the load-bearing balance of the prefabricated slabs, leading to falling incidents. Therefore, before carrying out any modification activities, it is necessary to consult the opinions of professionals and ensure that the modifications comply with relevant codes and standards.

In addition, there are other factors that may also cause the falling of prefabricated slabs, such as construction quality issues and design defects. Therefore, when constructing prefabricated slab houses, qualified construction units and compliant materials should be selected to ensure that the construction quality meets relevant requirements; at the same time, various factors should be fully considered during the design phase to ensure the structural safety and reliability of the prefabricated slab houses.