Production Process of Prefabricated Houses

The production process of prefabricated houses varies depending on the type and technology, with typical steps including foundation treatment, component prefabrication, main body assembly, and precision control. The following provides an explanation using three cases: rural South Korea, AI-controlled woodworking, and modular construction in China.

I. Rural South Korean Prefabricated Houses: Heavy Components and Rapid Assembly
This type aims to complete the main structure within 14 days, with core steps including:

1. Foundation Treatment: After leveling the land, excavate a 60 cm deep foundation pit, lay white plastic sheeting to prevent moisture loss from the concrete, and pour a non-reinforced concrete pad as the foundation.
2. Foundation Pile Installation: Use a drill to bore holes and secure the footplates, then install 5-ton prefabricated foundation piles using a mobile crane, with lifting holes reserved in the piles for subsequent hoisting.
3. Beam Assembly: Quickly connect the beams using mortise and tenon joints, secure them with nuts after horizontal measurement, and fill the gaps with expanding foam and seal with cement to prevent corrosion.
4. Main Body Assembly: Hoist the stairs, lay a 5 cm thick floor slab, and finally grout all component gaps.
   Technical Characteristics: This method relies on heavy prefabricated components and traditional assembly techniques, suitable for rural self-built housing scenarios, but the structural stability depends on the connection strength between the foundation piles and beams.

II. AI-Controlled Woodworking Prefabricated Houses: Robotic Automation and Modularization
This type has the advantage of completing the frame within 3 days, with core processes including:

1. Material Preparation and Cutting: In the factory, use high-precision equipment to saw the pine wood along the dividing lines, laser print labels for classification and stacking, ensuring material standardization.
2. Robotic Arm Assembly: A roller robotic arm lifts the wooden planks, and a nail gun secures one side within 2 seconds to form windows or walls; solid wood is made into square load-bearing beam frames.
3. Modular Production: Automate the production of walls, load-bearing beams, and other components using pneumatic molds and collaborative robots, with errors controlled to the millimeter level.
   Technical Characteristics: This method achieves rapid manufacturing of wooden houses through robots, but does not mention overall structural stability (such as earthquake and wind resistance), which may require additional reinforcement measures.

III. Modular Prefabricated Houses in China: Industrial Production and Precision Control
This type emphasizes full-process factory production, with core steps including:

1. Module Division and Prefabrication: Divide the building into independent modules (such as ceilings, walls, and plumbing), and complete manufacturing on a factory assembly line, including automated assembly by welding robots.
2. Parallel Operations and Precision Control: Adopt a parallel construction mode, position each steel bar to the millimeter, and attach an 'ID card' (project name, model, production date) to each module for traceability.
3. On-Site Assembly: After transportation to the construction site, assemble the prefabricated modules using a tower crane and pour the connecting parts on-site to ensure structural stability.
   Technical Characteristics: Industrial production offers high precision, shortening the construction period by more than 60%, and has been applied to high-rise residential buildings, but the risk of deformation during module transportation needs to be addressed.

Technical Comparison and Applicable Scenarios:

• The South Korean case is suitable for rural areas with stable land conditions and limited budgets;
• The AI-controlled woodworking case is suitable for low-rise wooden houses that require high speed and simple structures;
• The Chinese modular case is suitable for urban construction projects with high requirements for precision, environmental protection, and construction efficiency.