Panzhihua Prefabricated Building House

The situation of prefabricated building houses in Panzhihua is as follows:

I. Demolition of Prefabricated Panel Houses In Panzhihua City, there are some red-brick prefabricated panel houses built in the 1980s. Due to their long age, they have potential safety hazards, such as the risk of collapse and the deterioration of red bricks in case of natural disasters. Taking the red-brick house of the Second Hospital in the West District as an example, although netizens have suggested demolition and reconstruction or shantytown renovation, according to the requirements of the State Council documents, shantytown renovation should be carried out "based on one's own capabilities and gradually promoted". The West District launched the shantytown renovation work in 2016, but this house was not included in the scope. After the shantytown renovation was terminated in January 2022, there is currently no clear demolition plan, and efforts will be made to include it in the demolition scope in the future according to national policies and urban development needs.

II. Safety Hazard Assessment of Prefabricated Panel Houses The prefabricated panel houses built in the 1980s, such as those in Qingyuan Building, Xinnan Lane, Guaziping, generally show floor cracking and water leakage due to more than 40 years of use. After professional institution testing, the safety grade of Building 3, No. 31, Xinnan Lane was rated as Grade B, indicating that the main structure of the building is safe and can be used normally, but regular maintenance is required to control the development of local damage. For such houses, it is necessary to focus on structural durability to avoid problems such as steel bar corrosion caused by long-term leakage.

III. Management Policies for Prefabricated Buildings Panzhihua City is promoting the development of prefabricated buildings and has clarified the requirements for the assembly rate of newly allocated or transferred land projects:

• From January 1, 2024: The assembly rate of public building projects shall be no less than 40%, and that of other newly built projects shall be no less than 35%;
• From January 1, 2026: The assembly rate of all projects in the city shall be uniformly no less than 50%. The policies also put forward requirements for design quality control, construction drawing review and other links to promote the industrialization and green transformation of buildings.

IV. Application Scenarios and Advantages of Mobile Panel Houses Mobile panel houses, with light steel structures as frames and sandwich panels as enclosure materials, have the characteristics of modular prefabrication and rapid assembly, and are suitable for:

• Temporary housing at construction sites;
• Emergency resettlement or temporary transition places;
• Supporting service facilities for commercial, cultural and sports activities;
• Temporary factory buildings, warehouses or offices for enterprises. Their core advantages include fast construction speed, low noise, less construction waste, and the components can be disassembled, relocated and reused with a high reuse rate. However, attention should be paid to foundation treatment to ensure structural stability and living comfort.