Can the Walls of Prefabricated Block Houses Be Removed?

It is generally not advisable to directly remove walls in prefabricated block houses, especially load-bearing walls or those directly supported by prefabricated panels, as this may lead to structural safety issues. The specific reasons and renovation suggestions are as follows:

1. Why is it not advisable to directly remove walls?

1. Load-bearing function
   The walls of prefabricated block houses (such as brick-concrete prefabricated panel buildings) may bear part of the house's weight. For example, if light-weight walls under beams or walls directly supported by prefabricated panels are removed, it may result in ineffective load transfer, causing local or overall structural instability and even collapse.

2. Poor structural integrity
   Prefabricated panel houses are assembled from prefabricated components, and their overall firmness is weaker than that of cast-in-place structures. Removing walls may further weaken the structural connections, increasing the risk of house shaking or cracking, especially under external forces such as earthquakes.

3. Higher risks for old houses
   If the house is over 30 years old, the prefabricated panels may have reduced load-bearing capacity due to aging, and removal may easily cause fractures or collapses due to local stress concentration.

2. If renovation is necessary, the following measures must be taken

1. Professional assessment
   Commission a structural engineer or professional agency to assess the nature of the walls (whether they are load-bearing) and determine the feasibility of removal. The assessment cost is approximately 500-1500 yuan, and house structural drawings and on-site survey data are required.

2. Reinforcement plan

   • Load transfer: If it is indeed necessary to remove a load-bearing wall, steel beams (costing approximately 200-400 yuan per meter) need to be installed on the roof to transfer the load, and chemical anchors (each anchoring point bearing ≥1 ton) should be used to connect the new and old structures to ensure stability.
   • Temporary support: Before construction, temporary support should be provided for the structure above the area to be removed to prevent the prefabricated panels from breaking due to suspension.

3. Alternative solutions

   • Half-wall partitions: Retain the lower 50-80 centimeters of the wall as a half-wall to meet functional needs while reducing structural damage.
   • Arched doorways: Keep the span within 1.8 meters and disperse stress through an arched structure to reduce the risk of collapse.
   • Lightweight partitions: Replace with gypsum board (approximately 80-120 yuan per square meter) or light steel keel partitions to reduce the load and facilitate construction.

3. Conclusion

Removing walls in prefabricated block houses should be based on safety considerations. It is essential to confirm feasibility through professional assessment and formulate a reinforcement plan. Blind removal may lead to house depreciation, increased living risks, and even legal liability. It is recommended to prioritize alternative solutions or commission qualified construction units for the operation.