International Standard Container House
An international standard container house is a modular architectural form constructed by combining and assembling containers as basic units. The following provides a popular science introduction from multiple aspects:
Core Material Basis: International standard freight containers serve as the core foundation. Initially designed for logistics systems, their structures must meet the mechanical strength requirements for stacking, lifting, and long-distance ocean transportation. The side walls of a typical 20-foot container are made of weather-resistant steel plates ranging from 1.6 mm to 2.0 mm thick, with a corrugated design to increase flexural rigidity. The bottom frame is welded from C-channel steel longitudinal beams and I-beam cross members, forming a skeletal system capable of bearing tens of tons of cargo.
Features and Applications: These houses are characterized by rapid construction, low cost, and mobility, making them widely applicable in residential, office, and emergency settings. They adopt a steel frame structure with core materials such as corrosion-resistant steel plates and eco-friendly panels. Combined with shipbuilding anti-corrosion processes, their service life can exceed 20 years, supporting customized designs in standard sizes ranging from 20 to 60 feet.
Spatial Reconfiguration: The original dimensions of containers do not conform to human scale, necessitating physical cutting and reassembly during modification. Plasma cutting machines are used to create door and window openings in the side walls, while the four corner fittings are retained as primary load-bearing points. New structural support systems are formed by installing steel columns or light steel keel frames in the middle of the container. Insulation layers are typically laid using polyurethane or rock wool boards, with thickness varying according to climate zones.
Environmental Control: Steel container bodies are excellent conductors of heat, requiring the construction of a 'thermal break' system. This involves creating air layers or insulation boards between the steel frame and interior finishes. Rubber sealing strips are used at the connections between door and window frames and the container body to block thermal bridges. Ventilation relies on mechanically assisted installation of heat recovery ventilators.
Structural Stacking: When stacking multiple container houses vertically, an unreinforced single 20-foot container can typically be stacked up to three layers high, with temporary support columns or prestressed tie rods installed inside the bottom container. A safer design involves securing the containers to cast-in-place concrete strip foundations or steel ground beams with embedded bolts.
Pipeline Integration: Plumbing, electrical, and weak current systems required for residential functions must be embedded within the container. All pipelines mostly run along the internal longitudinal keels or top purlins of the container. Special lift pumps are required for bathroom drainage, while electrical wiring must be protected by metal wire trays and strictly differentiated between lighting circuits, etc.
