Selection of Construction Sites for Container Houses

The selection of construction sites for container houses requires comprehensive consideration of factors such as geological conditions, climatic environment, usage requirements, compliance requirements, and supporting services.

1. Geological Conditions Container houses have relatively high requirements for the ground foundation. It is necessary to choose areas with flat terrain and strong bearing capacity. For long-term fixed use, a concrete strip foundation should be poured (with a width of 30 - 50 centimeters and a depth adjusted according to the permafrost layer) to ensure uniform stress on the bottom beam and avoid uneven settlement that may cause deformation of doors and windows or cracks in the walls. For short-term use, precast concrete pads or steel pads can be used, but a crushed stone leveling layer should be laid to ensure that the horizontal error of the stress points does not exceed 2 millimeters per meter.

2. Climatic Environment

• Wind and Earthquake Resistance: In coastal or windy areas, products with a wind resistance rating of ≥ 12 and an earthquake resistance rating of ≥ 8 should be selected (such as the packing-box units from Suzhou Zhongnan Steel Structure) to avoid frame deformation or wall cracking under extreme weather conditions.
• Corrosion and Moisture Resistance: In areas with high humidity or large diurnal temperature differences (such as Ejin Horo Banner), hot-dip galvanized coating processes should be adopted. The foundation of the container body should be raised to avoid water immersion at the bottom. Regularly inspect easily rusted parts such as welds and wall corners. In southern humid areas, the anti-corrosion coating should be reapplied every 7 - 10 years.
• Thermal Insulation: In cold areas, additional thermal insulation layers should be added to the walls/roofs, and triple-glazed windows should be selected. In hot areas, skylights on the roof and glass partitions can be used to optimize lighting and reduce air conditioning energy consumption.

3. Usage Requirements

• Temporary Use (such as construction site dormitories and emergency rescue): Prioritize products that are foldable and have high transportation efficiency (such as the folding boxes from Suzhou Zhongnan, which increase the single transportation volume by 60%) and support rapid hoisting (single-set installation can be completed within 2 hours).
• Long-term Use (such as commercial stores and cultural and tourism homestays): Customized design is required, with staggered stacking used to expand the space. Multi-functional furniture (such as folding beds and integrated cabinets) should be equipped, and the exterior facade should be painted or have glass curtain walls for beautification.
• Special Scenarios: For overseas projects, it is necessary to confirm that the products have passed CE and ISO certifications. For emergency scenarios, the products should be portable and foldable for rapid deployment. For commercial pop-ups, the products should support reuse and layout adjustments.

4. Compliance Requirements

• Qualification Certification: Choose manufacturers that hold ISO quality system, fire performance testing, and steel structure professional contracting qualifications. Avoid using unqualified generic products (with a wind resistance rating of only 6 - 7 and a rework cost of 30% - 50% of the procurement cost).
• Environmental Protection Standards: The reusability rate of the products should be ≥ 80%, meeting the requirements of the 2025 "Safety Specifications for Modular Temporary Buildings" to avoid additional costs for construction waste disposal.
• Approval Procedures: For rural homesteads, construction approval is required, and structural drawings should be provided. Construction on cultivated land and basic farmland is strictly prohibited. For forest land, forestry approval is required. Leased land is only allowed for temporary construction.

5. Supporting Services It is advisable to give priority to manufacturers that provide full-process one-stop services (such as Wuhan Jinxiang Light Steel Houses), covering design, production, transportation, installation, and after-sales links to reduce communication costs and the risk of responsibility shirking.