Full Process of Prefabricated House Assembly

The full process of assembling a prefabricated house typically includes steps such as foundation preparation, installation of foundation piles and beams, construction of the chassis frame and floor, installation of walls and partitions, roof installation, and detail finishing.

Foundation Preparation: This is the first step in assembling a prefabricated house, requiring the leveling of the foundation and pouring of a cushion layer. For example, in a rural case in South Korea, an excavator is used to clear weeds and level the foundation. After digging foundation pits to a depth of about 60 centimeters, a white plastic sheet is laid and concrete is poured (without using steel bars) to provide a stable foundation for subsequent construction.

Installation of Foundation Piles and Beams: After the concrete has set, anchor plates are installed, holes are drilled with a drill, and expansion screws are used for fixation. A mobile crane is used to lift prefabricated foundation piles (each weighing about 5 tons), with reserved holes at the four corners for easy lifting. When installing beams, horizontal measurements and adjustments are required. After fixing with nuts, foam sealant is used to seal the gaps, and cement is used to seal the areas where the nuts are fixed to ensure structural stability.

Construction of Chassis Frame and Floor: On the pre-poured concrete foundation, heavy timber is used to construct the house's chassis frame. Prefabricated beam components with a white coating are laid as floor joists, and metal connectors are used to lock the joints. Large wooden panels are then covered to form a solid platform, providing support for the subsequent installation of walls and roofs.

Installation of Walls and Partitions: Prefabricated wall modules are moved onto the platform and erected, fixed to the base plate with nail guns. After the exterior wall frames are enclosed, partition wall skeletons are cut and assembled indoors, while floor beams for the second floor are laid to gradually build the main structure of the house.

Roof Installation: Huge triangular trusses are lifted to the top beams of the walls, and workers on the ground and roof cooperate to precisely place them, forming the roof covering of the house to protect it from wind and rain.

Detail Finishing: Grouting is applied to all component gaps to ensure structural stability and improve the house's sealing and durability. In addition, the standard floor construction procedures for prefabricated buildings also include steps such as setting out and positioning, binding of wall and column steel bars, aluminum formwork sealing, binding of floor bottom steel bars, reservation and embedding of water and electricity pipelines, pouring of floor concrete, and precision leveling of the cast-in-place floor to ensure the functionality and comfort of the house.