Prefabricated Panel Houses in Zunyi City

There are prefabricated panel houses in Zunyi City, and these houses have certain safety hazards and renovation difficulties.

Current Situation of Prefabricated Panel Houses

There are prefabricated panel houses built in the 1970s in Zunyi City, such as some houses in *Dormitory Area 1 (Building 28, Part of Area 1 of the 87 Factory). These houses are constructed using channel-shaped prefabricated panels. Due to their long history, these houses are severely damaged. Moreover, as they are backed by hillsides, there are significant safety hazards. Every time it rains, mountain torrents scour the foundations, and there have been multiple instances of trees toppling and damaging the exterior walls of the houses.

Association between Common Problems of Second-Hand Houses in Zunyi and Prefabricated Panel Structures

Common problems in second-hand houses in Zunyi include hollow and cracked walls, rusted and aged water and electricity pipelines, recurring kitchen and bathroom leaks, and insufficient ceiling height leading to a cramped feeling. Some of these old houses involve prefabricated panel structures. During long-term use, prefabricated panel houses are more prone to the above-mentioned problems due to their own characteristics and environmental factors. For example, hollow and cracked walls may be related to the treatment at the joints of the prefabricated panels and the overall settlement of the house. Rusted and aged water and electricity pipelines in prefabricated panel houses may be more prominent due to the pipeline laying method and the long age of the houses.

Key Points for Renovation of Prefabricated Panel Houses

• Specialized Diagnostic Capability for Old Houses: Homeowners are concerned about whether the construction party has specialized diagnostic capability for old houses during renovation. Since prefabricated panel houses have a special structure, professional personnel are required to accurately assess the current condition of the house and provide a scientific basis for subsequent renovation.
• Dealing with Red Clay Foundation Settlement: The common red clay foundation settlement in Zunyi can cause uneven ground. For the renovation of prefabricated panel houses, the construction party needs to have corresponding solutions to ensure the stability and safety of the renovated houses.
• Structural Safety Review during the Demolition Phase: It is crucial to initiate a structural safety review during the demolition phase. During the demolition of prefabricated panel houses, improper operation may affect the overall structural safety. Early review can identify problems in a timely manner and take measures.
• Confirmation of High-Risk Operations: For high-risk operations commonly seen in old houses in Zunyi, such as slotting on the prefabricated panel floors and the routing of pipelines around load-bearing walls, BIM simulation and on-site double confirmation are required to ensure construction safety and the stability of the house structure.