Renovation Plan for Prefabricated Panel Structure Houses

The renovation of prefabricated panel structure houses requires following a scientific process, achieving safety upgrades through professional assessment, targeted reinforcement, and reasonable planning. The specific plan is as follows:

1. Preliminary Professional Assessment

Before renovation, it is necessary to entrust a qualified testing agency to conduct a comprehensive 'physical examination' of the house, focusing on structural issues such as wall cracks, steel bar corrosion, and foundation settlement. According to data from the Ministry of Housing and Urban-Rural Development, approximately 60% of old prefabricated panel buildings nationwide can achieve renovation goals through reinforcement rather than demolition and reconstruction after assessment. The assessment results will directly determine the scope of renovation: if the structural damage is minor, local repairs can be made; if there are serious safety hazards (such as uneven foundation settlement exceeding the standard limit), demolition and reconstruction will be required.

2. Structural Reinforcement and Demolition/Modification

1. Foundation Reinforcement: For foundation settlement issues, grouting reinforcement or adding internal support columns can be used to enhance load-bearing capacity; for cracks in prefabricated panel floors, a 'elastic base layer + anti-crack mesh + high-toughness surface layer' triple composite system can be used for repair to enhance crack resistance.
2. Cantilever Structure Reinforcement: For cantilevered parts such as balconies with safety hazards, light steel structure reinforcement is preferred to reduce self-weight while enhancing stability.
3. Wall Reinforcement: For load-bearing walls or shear walls, carbon fiber cloth粘贴加固 (carbon fiber cloth bonding reinforcement) technology can be used to improve the wall's shear resistance; the demolition of non-load-bearing walls should avoid key structural nodes and be carried out by a professional team.

3. Hidden Works Renovation

1. Water and Electricity System Upgrade: Comprehensively inspect old pipelines, eliminate aging galvanized pipes, and switch to PPR pipes or copper pipes; re-layout the electrical circuits, increase the number of sockets (it is recommended to have at least one per square meter), and reserve interfaces for smart home devices.
2. Same-Floor Drainage Optimization: The bathroom adopts a dropped-panel same-floor drainage system to reduce the risk of leakage caused by pipes passing through the floor slab and to lower the impact of drainage noise on lower-floor residents.

4. Basic Works Renovation

1. Wall and Floor Treatment: Lay insulation boards + waterproof membranes on the walls; after knocking out the original floor materials, select anti-slip floor tiles or engineered wood flooring to enhance living comfort.
2. Kitchen and Bathroom Waterproofing: The wall waterproofing height should be no less than 1.8 meters, and the floor should use a flexible waterproof coating + cement mortar protective layer. A closed-water test should last for 48 hours without leakage.

5. Soft Furnishings and Detail Optimization

1. Roof and Window Upgrades: After reinforcing the roof, replace it with color-coated steel tiles, and replace the windows with broken-bridge aluminum double-glazed windows to improve sound insulation and thermal insulation performance.
2. Indoor Soft Furnishings: The walls can be decorated with environmentally friendly wallpaper or latex paint, and the floor can be matched with carpets or area rugs. Functional spaces can be divided through soft furnishings to enhance the sense of hierarchy.

During the renovation process, it is essential to strictly comply with the 'Code for Seismic Design of Buildings' and local old building renovation policies, ensure that all construction links are operated by certified personnel, and keep complete renovation records for subsequent acceptance inspections.