On-site Prefabricated Housing Finished Product Practices
The practices for on-site prefabricated housing finished products mainly include four key steps: factory-prefabricated components, on-site site preparation, component transportation and on-site assembly, and precision control and quality acceptance.
Factory-prefabricated components are the foundation of the entire process. In the factory, based on design drawings, components such as walls, floors, stairs, and roofs are prefabricated using reinforced concrete on an assembly line. The internal reinforcement layout of these components is reasonable, ensuring a sturdy structure. All processes are completed in the factory, including steel structure main body welding, wall laying, pre-embedding of water and electricity pipelines, door and window installation, full-house fine decoration, waterproof and fireproof testing, and safety quality inspection. Each module is a complete room with decoration, water and electricity, and supporting facilities when it leaves the factory, greatly improving subsequent construction efficiency.
On-site site preparation is crucial. Before construction, obstacles such as weeds, trees, and construction waste on the site must be completely cleared to ensure a clean site. Then, site leveling and hardening are carried out to provide a stable foundation for subsequent construction. At the same time, a drainage system is set up to prevent water accumulation from affecting construction. In addition, temporary facilities such as project department offices, supervision offices, worker dormitories, and material warehouses need to be erected to provide places for construction management, personnel rest, and material storage.
Component transportation and on-site assembly are the core links. The prefabricated components are transported to the construction site by special vehicles, and it is necessary to ensure that the components are not damaged during transportation. After arriving at the site, a crane is used to precisely hoist the components onto the foundation, and they are assembled like building blocks or Lego bricks. The components are fixed with bolts, the joints are treated, and waterproof glue is applied to ensure a tight fit between the components and prevent problems such as leakage.
Precision control and quality acceptance are key to ensuring housing quality. During the assembly process, the installation precision of the components must be strictly controlled. For example, the verticality deviation of vertical components should be ≤3mm per floor, and the cumulative deviation should be ≤15mm. After construction is completed, quality acceptance is carried out in accordance with the current national "Code for Acceptance of Construction Quality of Concrete Structures" to ensure that the house meets the qualified standards and provides a safe and reliable living environment for occupants.
