Prefabricated House Construction Process
The construction process of prefabricated houses mainly includes five steps: foundation preparation, customized production and modular packaging, transportation, on-site assembly, and subsequent finishing work.
Foundation Preparation: Before construction, detailed surveying and measurement of the area are required. After clearing ground obstacles, the foundation is excavated according to design requirements. Layered compaction is used to ensure that the foundation flatness error is within the allowable range. At the same time, bearing capacity tests are conducted to verify whether the foundation strength meets design standards. During this stage, special attention should be paid to the distribution of underground pipelines and geological conditions to avoid the risk of settlement in the later stages.
Customized Production and Modular Packaging (Factory Stage): After completing the house layout, style, and functional design according to customer needs, the factory uses an industrial assembly line to produce modules. All processes are completed in enclosed workshops, including welding of steel structure main bodies, laying of wall insulation layers, pre-embedding of water and electricity pipelines, installation of door and window frames, and full-house finishing. Each module is an independent and complete space when it leaves the factory, equipped with standardized water and electricity interfaces, decorative finishes, and fixed furniture. Through modular design, more than 90% of the on-site workload is completed in advance.
Transportation Stage: The finished modules are transported to the port by special flatbed trucks. The packaging design is optimized to make the module dimensions compatible with international standard shipping containers. During transportation, shock-absorbing brackets are used to secure the modules, and temperature and humidity monitoring systems are employed to ensure the transportation safety of special materials (such as electronic equipment and precision hardware). The typical duration of ocean transportation is 15-45 days, and routes need to be planned in advance to avoid the typhoon season.
On-site Assembly: After the modules arrive at the construction site, they are lifted into place in sequence according to their numbers using 300-ton cranes. A high-precision positioning system is used to achieve millimeter-level对接 (docking) errors. The assembly process adopts "dry construction" technology, using pre-embedded bolt connectors to mechanically lock the modules together. Water and electricity pipelines are connected through quick connectors for plug-and-play functionality. Taking the British nursing home project as an example, 63 modules were assembled in just 14 days, reducing the construction period by 60% compared to traditional methods.
Subsequent Finishing Work: This includes detail work such as repairing exterior wall decorative layers, sealing doors and windows, and laying roof waterproof membranes. At the same time, pressure tests are conducted to verify the sealing of the water and electricity systems. The final acceptance is based on the ISO 9001 quality management system, checking whether structural safety, fire protection regulations, and environmental protection indicators meet the standards to ensure that the house complies with local building codes.
