Effects of Prefabricated Houses
The effects of prefabricated houses are mainly reflected in short construction periods, controllable quality, energy conservation and environmental protection, high cost-effectiveness, and flexible construction.
Short Construction Period: Modular buildings significantly shorten construction periods through factory-prefabricated components and on-site assembly. Compared to traditional buildings, construction periods can be reduced by over 60%. For example, in a public housing project in Shenzhen, Guangdong, five residential buildings nearly 100 meters high were assembled from 6,028 concrete modules, reducing the completion and delivery time from 2.5 to 3 years to just 1 year. Expandable container houses take this to the extreme, with one month for production, one month for transportation, and just one day for assembly.
Controllable Quality: Each component of a prefabricated house is like a 'building block' with a detailed 'ID card', including project name, product model, and production date. During production, the position of each steel bar is precisely located, with errors and precision controlled in millimeters, ensuring the stability and reliability of building quality.
Energy Conservation and Environmental Protection: Modular buildings complete most construction processes in factories, with only on-site casting connections required, significantly reducing noise, dust, construction waste, and traffic congestion at construction sites. Additionally, with policy support, regions like Fujian Province have established industrial bases, achieving a significant reduction of over 70% in construction waste, demonstrating the advantages of prefabricated houses in energy conservation and environmental protection.
High Cost-Effectiveness: Prefabricated houses offer clear cost advantages. For example, a fully furnished 70-square-meter prefabricated house with a bedroom, kitchen, and independent bathroom, shipped from China to countries like the United States, costs less than $30,000 (approximately 200,000 yuan) for full installation. In contrast, hiring workers in the United States to build a room of the same size could cost just as much in labor alone, making prefabricated houses much more cost-effective.
Flexible Construction: The construction process for prefabricated houses is more flexible, with a significant reduction in on-site labor. For instance, the aforementioned public housing project saw a reduction in on-site labor of about 50%. Expandable container houses can be inhabited simply by unfolding, securing, and connecting to water and electricity upon receipt, with relatively easy installation, further demonstrating their construction flexibility.
