Container House Specification Standard

The specification standards for container houses cover multiple aspects such as structural design, material selection, construction acceptance, and adaptation to usage scenarios, and must comply with relevant national and industry technical requirements.

1. Structural Design Specifications Container houses must meet building seismic design codes (such as GB50011-2010), with structural stability being a core indicator. For example, in simulated tests of strong winds at Level 12, the frame deformation of qualified products should be less than 10mm (national standard limit), and for some high-quality products (such as fully steel-structured frames), the deformation can be controlled within 2mm. The connection method must be reliable, with fully welded structures being superior to semi-bolt connections, as the latter have a lower risk of bolt loosening after long-term use. In terms of load-bearing capacity, international standard 20-foot containers can bear 25 tons, and 40-foot containers can bear 45 tons, so the specification should be selected according to actual usage.

2. Material and Component Specifications

• Steel: The frame must be made of cold-rolled welded steel profiles with a thickness of not less than 3mm, and the weld strength must comply with the GB/T 19001-2016 standard.
• Insulation Layer: Commonly used rock wool boards (density 120kg/m³, Class A non-combustible) or polystyrene boards (density 18kg/m³, Class B1 difficult-to-ignite) are required to have low smoke emission (Class Q1) and abrasion resistance (Class T).
• Floor: Composed of 4mm thick cold-rolled steel, 2mm thick transverse members, 18mm plywood, and 1.8mm PVC flooring, with a flammability rating of Class B1.
• Doors and Windows: Sliding windows use UPVC frames with 5mm transparent glass, and the entrance door is made of double-sided galvanized color-coated steel plates (with a 50mm thick insulation layer) equipped with ethylene propylene diene monomer rubber seals.

3. Construction and Acceptance Specifications

• Quality Traceability: Production enterprises need to establish a quality management system, with supervision or construction units stationed at the factory for key production processes, and records must be kept.
• Acceptance Process: Includes material acceptance (such as steel and accessories), factory production acceptance (reference to BIM models, component qualification marks), and on-site installation acceptance (transportation, assembly, water and electricity connections, etc.).
• Allowable Deviations: The pass rate for general items should reach over 80%, and the deviation of non-conforming items should not exceed 1.5 times the allowable value, with no serious defects.

4. Usage Scenario Adaptation Specifications

• Emergency Scenarios: Foldable container houses need to optimize transportation and storage costs. For example, after folding, the volume can be reduced to 1/5 of the expanded state, and the loading capacity of a single truck can be increased by 30%-50%.
• Long-term Use: With proper maintenance, the lifespan of container houses can reach over 25 years. However, it is necessary to avoid changing the land nature (such as pouring foundations and connecting to water and electricity for long-term residence), otherwise, it may be identified as an illegal construction.
• Special Environments: In coastal or high-wind pressure areas, fully steel-structured products with better wind resistance should be selected, and the redundancy should meet the requirements for extreme weather.