How to Make Prefabricated Houses

The production of prefabricated houses requires selecting processes based on the type, with common types including modular, concrete, container, and specific cases (such as rural prefabricated houses in South Korea), each with distinct production processes.

Modular Prefabricated Houses

Modular houses break down buildings into independent modules, with the core processes being factory prefabrication and on-site assembly. First, components such as ceilings, walls, and floors are produced on factory assembly lines, with welding robots and highly automated equipment completing the final assembly. For example, the China Construction Hai Long Intelligent Construction Industrial Park in Shenzhen, Guangdong, can deliver 20,000 to 30,000 modules annually through parallel operations and intelligent production lines, reducing construction periods by over 60% compared to traditional buildings. After module production is complete, they are transported to the site for assembly, achieving rapid construction through standardized interfaces, suitable for residential and school settings.

Prefabricated Concrete Houses

These houses use steel reinforcement as the framework, with the entire process from steel reinforcement processing to finished product completed in the factory. Specific steps include:

1. Steel Reinforcement Processing: Cut and bend steel reinforcement according to design requirements to form the framework structure;
2. Formwork Installation: Erect formwork to fix the shape for concrete pouring;
3. Concrete Pouring: Inject concrete into the formwork to cover the steel reinforcement framework;
4. Curing and Demolding: Accelerate concrete hardening through steam curing, and demold after reaching the required strength;
5. Finished Product Processing: Perform fine processing such as surface treatment and hole drilling on the prefabricated components.
   This process is suitable for low-rise residential buildings or foundational components, but specific steps may vary depending on the manufacturer's process.

Prefabricated Demountable Container Houses

The production process is divided into five steps:

1. Bottom Frame Installation: Connect the lower corner fittings and bottom sills, fix the battens (e.g., 40x80x2960mm specifications), secure with bolts, and measure the diagonals to ensure verticality;
2. Column and Frame Connection: Temporarily do not tighten the bolts to allow for movement space, lay MGO boards, and level the ground;
3. Top Structure Assembly: Connect the upper corner fittings and top longitudinal beams, install the top transverse beams and battens, adjust the verticality with a level, reinforce the joints, and install drainage channels and downspouts;
4. Wall Panel and Ceiling Installation: Attach sealing strips before installing the wall panels, adjust the positions of doors and windows as needed, and secure the ceiling with square tubes or top beams;
5. Interior Decoration and Roof Installation: Run electrical wires, lay glass wool insulation, and finally secure the roof tiles.
   These houses are demountable and movable, commonly used for temporary housing or commercial purposes.

Specific Case: Rural Prefabricated Houses in South Korea

1. Foundation Treatment: Level the foundation, lay plastic sheeting to prevent concrete moisture loss, and pour a non-reinforced concrete pad;
2. Foundation Pile Installation: Use a drill to bore holes and fix the footplates, install 5-ton prefabricated foundation piles with a crane, and reserve lifting holes;
3. Beam and Structure Connection: Use mortise and tenon joints to quickly connect the beams, secure with nuts, fill with expanding foam, and seal the nuts with cement to prevent corrosion;
4. Main Structure Construction: Hoist the stairs, lay a 5 cm thick floor slab, and finally grout the component joints.
   This process significantly shortens construction periods through standardized components and rapid connection techniques, suitable for rapid construction in rural areas.