Assembly of Prefabricated Houses
The assembly process of prefabricated houses typically includes steps such as foundation preparation, installation of foundation piles and beams, construction of the house chassis frame, laying of floor joists and panels, installation of wall modules, detailed interior division and laying of second-floor floor beams, roof construction, and treatment of component gaps.
Foundation Preparation: Leveling the foundation and pouring a cushion layer are the initial steps, ensuring the accuracy and stability of the foundation. For example, in a rural case in South Korea, excavators are used to clear weeds and dig foundation pits. Surveyors continuously measure to ensure that the excavation depth and ground height meet design requirements. After that, white plastic sheets are laid and concrete is poured.
Installation of Foundation Piles and Beams: After the concrete solidifies, sole plates are installed and foundation piles are fixed. These foundation piles are usually prefabricated in advance, each weighing about 5 tons, and are installed using mobile cranes. Subsequently, beams are installed like building blocks, and horizontal measurements and adjustments are made. They are fixed with nuts and the gaps are filled with foam glue.
Construction of the House Chassis Frame: On the pre-poured cement foundation, workers start to construct the chassis frame of the house, using tools such as electric drills and hammers to outline the rectangular shape.
Laying of Floor Joists and Panels: The team lays the floor joists. These prefabricated beam components with white coatings are put in place, and metal connectors firmly lock each joint. Then, large wooden panels are carried up and placed over the platform.
Installation of Wall Modules: Workers jointly carry the prefabricated wall modules onto the platform and carefully erect them. After the first wall panel stands firmly, the other wall panels are installed in sequence and fixed to the base plate with nail guns.
Detailed Interior Division and Laying of Second-Floor Floor Beams: After the exterior wall frame is basically enclosed, workers cut and assemble materials indoors to build the framework of partition walls. At the same time, the floor beams for the second floor are also laid, creating the space upstairs.
Roof Construction: Roof construction is the most complex and spectacular part of the entire project. Huge triangular trusses are transported to the site. Workers on the ground and on the roof work closely together to slowly lift these giants and precisely place them on the beams at the top of the walls.
Treatment of Component Gaps: All component gaps are treated with grouting and other methods to ensure the stability and airtightness of the house.
