How to Handle Prefabricated Panel Houses

The handling of prefabricated panel houses should be determined based on the actual condition of the house and the results of safety assessments. Currently, there is a greater emphasis on renovation and classified disposal rather than uniform demolition.

Renovation: The Preferred Option When the Main Structure is Safe

If the main structure of the prefabricated panel house still meets safety requirements for use, measures such as repair and reinforcement, reconstruction, or original dismantling and rebuilding are typically taken to eliminate hidden dangers. Specific measures include:

• Structural Reinforcement: For cracks in the prefabricated panels wider than 0.3 millimeters, special treatments such as carbon fiber reinforcement or pressure grouting are required. Bolts with a rust rate exceeding 30% should be inspected and replaced to prevent connection failure. Constructing additional structural columns at the four corners of the house enhances overall stability.
• Appearance and Functional Upgrades: Repaint the exterior walls and perform reinforcement grouting to address leakage issues. In conjunction with renovation projects for older residential areas, reinforce stairways and corridors, install elevators, replace aging pipes and electrical wires, and increase green spaces and parking spaces to improve the living environment.

Demolition and Reconstruction: The Ultimate Solution Only for Dangerous Houses

If the house is assessed as dangerous by a professional agency, different measures should be taken based on the danger level:

• Grade C Dangerous Houses: The load-bearing capacity of local structures is insufficient, but the main structure is not severely damaged. These houses can continue to be used after repair and reinforcement, such as adding supports and repairing cracks.
• Grade D Dangerous Houses: The main structure is severely damaged and cannot meet safety requirements. In principle, these houses should be demolished and rebuilt. Reconstruction must comply with current building codes to ensure the safety of the new structure.

Core Basis for Classified Disposal: Professional Safety Assessment

Whether a house is classified as dangerous must be determined through professional safety assessments, not solely based on the age of the building or its prefabricated panel attributes. For example, cities like Yingkou and Wuhan have conducted inspections of prefabricated panel houses, assessing their safety through structural testing and material analysis, and then formulating disposal plans based on the assessment results. This process avoids a one-size-fits-all approach to demolition, ensuring both resident safety and social resource conservation.

Summary: The handling of prefabricated panel houses should be based on safety assessments, with renovation prioritized to extend their service life. When a house is confirmed to be dangerous, reinforcement or reconstruction should be chosen based on its danger level. Residents should actively cooperate with inspection efforts to promptly eliminate hidden dangers and ensure living safety.