Prefabricated House Construction

Prefabricated house construction involves the industrial production of building components and their on-site assembly. The main types include panel-type, box-type, and frame-type prefabrication.

Construction Process

1. Factory Prefabrication: The building is disassembled into independent modules, which are manufactured in the factory. For example, ceilings, walls, and waterproof layers in bathrooms are all produced in the factory. Some scattered components are produced separately and then assembled on the final assembly platform. The entire process is highly automated, allowing for the delivery of a large number of modules each year. Moreover, the position of each steel bar is precisely located, with errors and precision controlled in millimeters to ensure component quality.
2. On-site Assembly: The prefabricated components are transported to the construction site for assembly. Taking a real estate construction site in Shanghai as an example, tower cranes transport the prefabricated 'building blocks' and install them in the appropriate positions. Each 'building block' has a detailed 'ID card', including information such as the project name, product model, and production date, facilitating management and traceability. In a case of a self-built house in rural South Korea, the process starts with leveling the foundation and pouring the cushion layer, installing foundation piles and splicing beams, backfilling soil, and pouring the foundation. When building the second floor, a crane is directed to precisely fit the prefabricated load-bearing columns and beams together. After laying the floor slab, foam glue is used to seal the gaps, secondary grouting is performed at the connections of the load-bearing columns, and finally, a steel reinforcement mesh is laid and poured with concrete to form a solid structure, ensuring the stability of the house.

Advantages and Disadvantages

Compared with traditional construction methods, prefabricated houses offer numerous advantages. Short Construction Period: Since most components are prefabricated in the factory, only assembly is required on-site, significantly shortening the construction time. Controllable Quality: The stable factory production environment allows for strict control over the quality and precision of components, reducing the impact of human factors on building quality. Energy Efficiency and Environmental Protection: It reduces noise and dust pollution from on-site construction, while the high reuse rate of components contributes to resource conservation and environmental protection. Easy Maintenance: The high standardization of components makes later maintenance and replacement more convenient. However, prefabricated houses place extremely high demands on the industrial base, requiring a complete technical system, production system, and industrial cluster for support. Otherwise, it is difficult to achieve large-scale, high-quality production and installation.