Safety of Prefabricated Concrete Houses

The safety of prefabricated concrete houses has two sides, with both solid and reliable advantages and some potential hazards.

Advantages

• Solid and reliable structure: The main body of prefabricated concrete houses adopts a reinforced concrete structure, with a quality guarantee period of up to 70 years. The factory prefabrication process is highly precise, with an error of no more than 2 millimeters, ensuring accurate component dimensions and laying a solid foundation for the overall quality of the house.
• Excellent seismic performance: After rigorous seismic testing, prefabricated concrete houses can withstand magnitude-8 earthquakes. In the event of an earthquake, their structure can effectively disperse and bear seismic energy, reducing the extent of house damage and safeguarding the lives of occupants.
• Good settlement performance: Compared with ordinary houses, prefabricated concrete houses experience less overall settlement. This is due to their reasonable structural design and precise installation of prefabricated components, enabling the house to maintain good stability during long-term use.

Hazards

• Construction-related hazards: If the construction process is not standardized, there is a 7% probability of problems such as foundation settlement or wall cracks within 5 years. Especially when constructing in low-temperature environments, the performance of concrete is affected, making quality issues more likely to occur. Some cases show that maintenance costs after 5 years may account for a quarter of the original construction cost, imposing a significant economic burden on homeowners.
• Material quality hazards: The quality of prefabricated concrete slabs on the market varies greatly, with a majority being of inferior quality. These inferior prefabricated concrete slabs have a short service life and may experience aging and damage during use, potentially leading to collapse accidents and seriously threatening the safety of occupants.
• Sound insulation and water seepage issues: The spliced prefabricated slabs have gaps, resulting in poor sound insulation. Sound can easily propagate through the long circular holes in 10-centimeter-thick prefabricated slabs, and may even amplify noise. In addition, the water seepage rate at the joints is nearly twice that of traditional buildings, allowing rainwater to easily penetrate and corrode the steel bars, affecting the structural safety and service life of the house.
• Assembly-related hazards: If there are technical problems or improper operations during the assembly process, it will affect the stability and safety of the house. For example, loose component connections and installation position deviations can lead to shaking and deformation of the house during use.