Advantages and Disadvantages of Brick-Concrete Prefabricated Panel Houses

The advantages of brick-concrete prefabricated panel houses are fast construction and low cost; the disadvantages are poor integrity, weak seismic performance, and subpar long-term living performance.

Advantages

• High construction efficiency: Brick-concrete prefabricated panel houses use prefabricated components. The prefabricated panels and other parts are made in advance in the factory and then directly assembled and pieced together on-site. The construction process is like building with building blocks, greatly shortening the construction cycle. Compared with traditional brick-concrete structural houses, the construction speed can be significantly increased, allowing for rapid completion of house construction to meet the needs of emergency housing.
• Relatively low cost: Since prefabricated components are mass-produced in the factory, economies of scale can be achieved, reducing production costs. At the same time, the shortened on-site construction time reduces labor costs and construction management costs. Overall, the cost of brick-concrete prefabricated panel houses can be about 20% lower than that of traditional brick-concrete structural houses, which is attractive to home builders with limited budgets.

Disadvantages

• Poor integrity and weak seismic performance: The prefabricated panels are simply placed on the walls like jigsaw puzzles, lacking firm connections with each other, resulting in poor overall integrity of the house. Under external forces such as earthquakes, the prefabricated panels are prone to separating from and falling off the walls. The stairwell, as a weak point, has a higher risk of prefabricated panel falling and wall collapse. More than half of the old prefabricated panel houses have potential safety hazards. Houses built around 1978 and 1984 basically have no earthquake resistance or insufficient seismic considerations. The strength of the mortar and bricks is low, and the overall integrity and seismic performance are extremely poor. Houses built around 1995 have preliminary seismic designs, but they are essentially still prefabricated panel brick-concrete structures with limited quality improvements.
• Subpar long-term living performance: Over time, problems such as loosening and cracks may occur at the connection points between the prefabricated panels, affecting the stability and safety of the house. Moreover, the sound insulation and heat insulation performance of the prefabricated panels are relatively poor, which will bring certain inconveniences to the lives of the occupants. Therefore, it is best not to use prefabricated panels in earthquake-prone areas. It is recommended to use cast-in-place floor slabs, which have good overall integrity, excellent seismic performance, and better long-term living performance.