Layout Requirements for Container Houses

The layout of container houses requires comprehensive consideration of structural safety, functional requirements, environmental adaptability, and compliance. The specific requirements are as follows:

1. Structural Safety and Foundation Treatment The bottom beams (I-beams or channel steels) of container houses have limited contact area with the ground, necessitating uniform load-bearing. If placed directly on soft soil layers, uneven settlement may occur, leading to deformation of doors and windows or cracks in walls. Foundation treatment requirements: Clear away loose soil and debris from the ground surface and compact the original soil layer; for long-term fixed use, pour a concrete strip foundation with a recommended width of 30-50 centimeters and a depth determined by the local frost depth. For example, in the Yiqi area, where there are significant temperature differences between day and night and noticeable humidity changes, it is advisable to prioritize container bodies with hot-dip galvanized coating processes, which offer longer corrosion resistance and effectively delay rusting.

2. Spatial Combination and Functional Zoning The standard dimensions of containers (e.g., the internal clear space of a 20-foot container is approximately 5.8×2.3×2.3 meters) are relatively cramped, necessitating the expansion of space through container combination. Layout principles:

• Horizontal Expansion: Connect multiple containers side by side, suitable for large space requirements such as office areas and dormitory areas;
• Vertical Stacking: Strictly control verticality; for buildings with three or fewer floors, the total height is recommended not to exceed 9.6 meters, and strengthen the seismic and anti-loosening treatment of node connections;
• Functional Zoning: Divide areas according to usage scenarios (e.g., office areas, conference rooms, restrooms) and optimize traffic flow through partitions or customization (e.g., adjusting door and window positions). For example, the Qianmen project of Beijing Metro Line 8 adopted a modular combination to achieve efficient integration of office and living functions.

3. Performance Testing and Compliance Requirements Container houses must meet multiple performance standards:

• Fire Resistance: Materials must reach at least B1 grade to delay the spread of fire;
• Water Resistance: Focus on treating concealed works (e.g., roofs, joints) to prevent leakage;
• Wind and Earthquake Resistance: Structures must pass certification; for coastal or strong wind areas, it is recommended to choose products with a wind resistance rating of 8 or above;
• Environmental Protection: The reusability rate of materials must reach over 80%, reducing construction waste after dismantling. Additionally, exported products must have international certifications such as CE and ISO, and government-enterprise project bids must provide fire and wind resistance test reports.

4. Installation Techniques and Concealed Works The installation process must be guided by professionals, with a focus on controlling:

• Sealing: Check container joints and door and window seals to prevent rainwater penetration;
• Concealed Works: Ensure that water and electricity installations and moisture-proof treatments comply with regulations to avoid rework later;
• Service Life: Simple iron sheet containers have a service life of about 5 years, while custom-made container houses can last over 30 years, requiring regular maintenance and replacement of aging components.