Foreign Prefabricated House Installation
The installation of foreign prefabricated houses typically involves five stages: factory prefabrication, transportation, on-site lifting and assembly, exterior enclosure and equipment installation, and decoration, characterized by high efficiency, precision, and short construction periods.
The factory prefabrication stage is a core component. Core elements such as walls, floor slabs, and stairs are produced through standardized assembly lines, with digital design using BIM technology to ensure precise component dimensions and matching interfaces. Windows, doors, insulation layers, and decorative finishes are integrated within the factory to form complete building modules, significantly shortening construction periods and reducing on-site wet work. For example, Unity Home's 1,620-square-foot residence was completed in just five weeks at the factory.
The transportation stage requires planning dedicated routes and using shock-absorbing and securing devices to ensure module safety. Some projects reduce transportation space requirements through optimized designs, such as foldable walls, enhancing transportation efficiency.
The on-site lifting and assembly stage is divided into four steps:
- Foundation construction: Complete ground treatment, foundation pouring, and embedded part installation in advance to provide a reference for module positioning.
- Module lifting: Use tower cranes or truck cranes to lift modules layer by layer in the designed sequence, with real-time monitoring of verticality and levelness using laser positioning and level gauges, with errors controlled to the millimeter level.
- Module assembly: Form an overall structure using high-strength bolts, welding, or grouting connections, reducing wet work through 'dry connection' technology and enabling rapid connection of electrical and plumbing systems.
- Temporary support: Set up a temporary support system after lifting to ensure structural stability until permanent connections are completed.
The exterior enclosure and equipment installation stage includes the installation of exterior wall panels, roof panels, windows, and doors, as well as the laying of equipment pipelines (electrical, plumbing, HVAC). Some projects achieve 'plug-and-play' pipeline connections through modular design, further enhancing efficiency.
The decoration stage covers interior decoration (interior partitions, ceilings, flooring materials) and exterior works (roads, landscaping). Using 'prefabricated decoration' technology can shorten construction periods, such as the Moscow Dubldom wooden residence, which was assembled and equipped with basic facilities in just one day.
Technical advantages are significant: Through a highly industrialized process, total construction periods can be shortened by 30%-50%, with more stable quality control. Case studies show that the Hobbit Home was assembled in three days, Robert Gurney's modular residence was assembled on-site in two days, and the Big Box eco-luxury residence, covering 80 square meters, was assembled in just one day.
