Huaiyuan Prefabricated House Installation Process

The installation process of Huaiyuan prefabricated houses mainly consists of six stages: detailed design and BIM modeling, factory prefabrication and quality control, on-site foundation construction and component transportation, on-site assembly (lifting and connection), subsequent construction, and completion acceptance.

1. Detailed Design and BIM Modeling: Utilize BIM technology for detailed design, accurately presenting details such as the dimensions, hole locations, embedded parts, and pipeline routes of each component, achieving interdisciplinary collaboration and avoiding collision issues during on-site installation.
2. Factory Prefabrication and Quality Control: Assemble high-precision steel molds in the factory according to detailed design drawings, with deviations typically required to be less than 1mm; bind steel reinforcement cages within the molds, accurately install embedded parts for water and electricity pipelines, window frames, lifting points, etc.; pour with self-compacting or high-performance concrete and conduct steam curing in a constant-temperature and humidity curing kiln for 4-6 hours, allowing demolding only after reaching at least 70% of the design strength; after demolding, components must undergo multiple inspections including dimensions, flatness, strength, and embedded part positions, with non-conforming components strictly prohibited from leaving the factory.
3. On-site Foundation Construction and Component Transportation: Conduct on-site foundation construction using slab or strip foundations, embedding connecting reinforcement or anchor bolts corresponding to the first-floor components, with a foundation curing period generally not less than 7 days and lifting allowed only after reaching the required strength; transport factory-prefabricated components to the site using dedicated flatbed trucks, securing and binding components during transportation to prevent collision damage, with wall panels exceeding 6 meters in length or floor slabs with a span of up to 12 meters requiring dedicated transport racks.
4. On-site Assembly (Lifting and Connection): Use tower cranes or truck cranes to lift first-floor wall panels in sequence according to their numbers onto the embedded reinforcement or bolts in the foundation, using dedicated lifting fixtures to ensure component balance, and fixing them with temporary supports and calibrating verticality after positioning; after installing the first-floor wall panels, proceed with lifting floor slabs or composite slabs, connecting them between panels and between panels and walls through reserved reinforcement and pouring concrete; some vertical component connections include columns, wall panels, and beams, such as installing prefabricated columns in sequence, lifting prefabricated shear walls according to principles, and installing prefabricated beams with main beams first followed by secondary beams.
5. Subsequent Construction: Conduct surface leveling and decoration of walls; install window and door frames, arrange and install water, electricity, and gas pipelines; construct the roof structure, lay the roofing, and conduct waterproofing treatment; carry out interior decoration work such as floor laying, wall decoration, and ceiling installation.
6. Completion Acceptance: After the entire construction process is completed, conduct a comprehensive inspection and acceptance to ensure the building meets design requirements and relevant regulations.