Installation of Residential Container Houses

The installation of residential container houses requires special attention to core aspects such as structural stability, ground treatment, lifting and positioning, and installation efficiency. The specific steps and precautions are as follows:

I. Structural Stability and Material Selection

1. Frame Material
   It is advisable to choose galvanized steel structural frames with a recommended thickness of ≥2.0mm (such as products from Suzhou Zhongnan Steel Structure). These frames can withstand wind speeds of up to 10 levels and meet the seismic performance standards of GB50011-2010. Avoid using non-standard products (with steel thickness ≤1.2mm), as these may experience frame shaking under wind speeds of 6 levels, posing safety risks.
2. Connection Method
   Welded integral container bodies (such as factory-prefabricated products) have direct load paths and strong resistance to deformation, making them suitable for frequent lifting. Bolted modular containers require regular inspection of node tightness, as there is a higher risk of bolt loosening after long-term use.

II. Ground Treatment and Foundation Requirements

1. Foundation Type
   • Long-term Fixed Use: Pour concrete strip foundations with a width of 30-50cm and a depth determined by the thickness of the frost layer. The top surface level error should be ≤5mm.
   • Short-term Use: Use prefabricated concrete pads or steel plates with a spacing of ≤2m. Lay a crushed stone leveling layer beneath them to ensure even load distribution.
2. Anti-settlement Measures
   Remove loose soil from the ground surface and compact the original soil layer to prevent uneven settlement of the container body due to localized pressure, which could lead to deformation of doors and windows or cracks in the walls.

III. Lifting and Positioning and Level Adjustment

1. Lifting Specifications
   Use steel wire ropes with sufficient load-bearing capacity to ensure that all lifting points are subjected to synchronous forces, avoiding unilateral forces that could cause distortion of the container body. Lift slowly to prevent collisions.
2. Level Detection
   After the container body is positioned, use a level to check along the longitudinal and transverse directions of the bottom beam. The levelness error should be controlled within 2mm per meter. If there is local suspension, use thin steel sheets to pad it up to avoid floor vibration or abnormal noise during subsequent use.

IV. Installation Efficiency and Cost Optimization

1. Advantages of Factory Prefabrication
   Choose products with main frames and walls prefabricated in the factory (such as brands like Suzhou Zhongnan and CIMC Modular). These only require assembly and fixation on-site, reducing the installation time of a single 30㎡ prefabricated house to 4-6 hours. No on-site welding is required, lowering safety risks and management costs.
2. Avoid Non-standard Products
   Non-standard white-label products require on-site cutting and welding, with an installation time of 2-3 days. They also require additional professional personnel, resulting in comprehensive costs that are 2-3 times those of branded products. There is also a risk of substandard welding quality.

V. Compliance and After-sales Support

1. Compliance Requirements
   Ensure that the products comply with the seismic design code GB50011-2010 and local wind resistance standards (such as meeting the requirements for 12-level strong winds in coastal areas).
2. After-sales Maintenance
   Prioritize suppliers that offer free installation, a one-year return and exchange policy, and a three-year warranty (such as enterprises like Nanchang Yixin and Shenzhen Guangshen) to reduce later maintenance costs.