Prefabricated House Construction Process Guide
The prefabricated house construction process mainly includes six steps: design and planning, material and component preparation, foundation treatment, module production and transportation, on-site assembly, and quality inspection.
Design and Planning: It is necessary to clarify the purpose and budget of house construction, assess the geological conditions of the site, and handle legal procedures. For example, for self-built low-rise residential houses in rural areas, an application needs to be submitted to the village committee for approval. For urban areas or temporary buildings, a "Temporary Construction Project Planning Permit" is required. Use design software (such as Kujiale, SketchUp) for spatial planning, determine room layouts, door and window positions, select structural types (such as light steel, container modular), and form detailed construction drawings.
Material and Component Preparation: Purchase core components according to design requirements. For example, light steel villas require light steel keels, structural panels, and insulation materials, while container houses require standard container modules and connectors. Contact manufacturers for customization through B2B platforms (such as Made-in-China.com, Alibaba.com), clarify specifications and quantities, and obtain multiple quotes.
Foundation Treatment: Level the foundation and pour a cushion layer. Measure to ensure that the excavation depth and ground height meet design requirements. For example, in a rural case in South Korea, after excavating about 60 centimeters, a white plastic sheet is laid to prevent moisture loss from the concrete, and then non-reinforced concrete is poured.
Module Production and Transportation (for factory prefabrication mode): The factory divides the house into independent standard modules (such as bedrooms, kitchens, and bathrooms), completes processes such as steel structure welding, wall laying, pre-embedding of water and electricity pipelines, and door and window installation, achieving "finished products upon leaving the factory". The modules are uniformly coded, classified, and inspected, and after proper waterproofing, corrosion protection, and shock protection measures are taken, they are transported to the port by special flatbed trucks and adapted to international standard shipping containers.
On-site Assembly: Install the sole plates and fix the foundation piles. Use mortise-and-tenon joints or nuts to fix the beams during assembly. Fill the gaps with foam glue and seal the nut fixing points with cement. Use cranes to align and lock the prefabricated modules (such as bay windows and balconies) and connect the water and electricity pipelines. Finally, backfill the soil, pour the foundation frame, and complete the grouting of component gaps.
Quality Inspection: Ensure that all connecting components are free from corrosion and the structure is stable, meeting international building safety certification standards (such as EU and Australian certifications).
