Prefabricated Housing

Prefabricated housing is a form of construction that involves the industrial production of building components, which are then assembled on-site. It is also known as prefabricated assembled buildings or modular buildings. Its core lies in breaking down the building into independent modules (such as ceilings, floors, walls, plumbing and electrical lines, etc.), which are manufactured in factories and then transported to the construction site for assembly. This construction model combines the advantages of industrial production and on-site assembly, gradually transforming the production methods of the traditional construction industry.

I. Core Characteristics

1. Efficiency: Factories employ parallel operations and automated production lines, reducing construction periods by over 60% compared to traditional buildings. For example, a public housing project in Shenzhen, Guangdong, was assembled from 6,028 concrete modules, with the completion and delivery time reduced from 2.5-3 years to 1 year. This efficiency improvement stems from the standardization of component production in factories and the streamlining of on-site assembly, minimizing the impact of uncertain factors such as weather and labor.
2. Precision: Modules are produced with millimeter-level error control, and each component comes with a detailed 'ID card' (such as project name, model, production date) to ensure quality control. Through a digital management system, the entire process from production to installation of components is traceable, effectively reducing quality risks.
3. Environmental Friendliness: On-site operations reduce dust, noise, and construction waste, meeting green building standards. Factory production optimizes material utilization, reduces waste generation, and modules can be disassembled and reused, further lowering resource consumption.
4. Flexibility: Modular design supports rapid maintenance and renovation, with applications expanding from residential to commercial and public housing sectors. For example, by adjusting module combinations, different functional requirements can be quickly met, extending the building's service life.

II. Typical Cases

• China's 'prefabricated houses' have gained popularity overseas, achieving cost-effectiveness and environmental advantages through full-house prefabrication in factories and rapid on-site assembly. For instance, some projects use lightweight steel modules, which have low transportation costs and are easy to install, making them suitable for remote areas or emergency scenarios.
• Rural prefabricated houses in South Korea use mortise-and-tenon joints to connect beams, completing the main structure in 14 days and securing 5-ton foundation piles with footplates. This design combines traditional craftsmanship with modern technology, balancing structural stability and construction efficiency.

III. Development Challenges
Currently, the global market for modular buildings is growing continuously, with an expected breakthrough of USD 142.8 billion by 2030. However, this model requires high standards for technological systems, production systems, and industrial clusters. Key issues such as component standardization, transportation costs, and on-site assembly precision must be addressed to further promote its application.