Container House Acceptance Specifications

The acceptance specifications for container houses are primarily based on T/CECS 1932-2025 'Quality Acceptance Standards for Container Houses' and must also comply with current national standards and industry technical regulations. The specific acceptance criteria are as follows:

I. Structural Safety and Material Acceptance

1. Structural Stability
   It must meet the requirements of GB50011-2010 'Code for Seismic Design of Buildings', such as withstanding wind speeds up to those of a Category 12 typhoon (with frame deformation not exceeding 10mm) and having a seismic resistance level set according to scenario requirements (e.g., seismic resistance up to magnitude 8). The yield strength of structural steel should be no less than 345MPa, and weld quality must pass non-destructive testing. Corner fittings must be reliably connected, and spot welding is prohibited as a substitute.
2. Material Quality
   Steel and accessories must be accompanied by quality certificates. Enclosure and filling materials must not use flammable cores such as EPS; in crowded places, Class A rock wool or glass wool must be used, with a fire resistance limit of at least 0.5 hours. Electrical wiring must be protected by conduits to prevent fire hazards.

II. Fire Protection and Corrosion Prevention Requirements

1. Fire Separation
   Floor-level fire separation should be set up in accordance with GB50016 'Code for Fire Protection Design of Buildings'. Escape routes should have a clear width of at least 0.9 meters and be equipped with fire extinguishers, smoke detectors, and emergency lighting. Temporary dormitories and office buildings must achieve a Class A fire performance rating (as required by GB 50720-2011).
2. Corrosion Prevention Treatment
   Steel structures should use weathering steel (GB/T 4171) or anti-corrosion coatings. Connectors must meet the standards of Q235B/Q345B (GB/T 700, GB/T 1591) to ensure long-term resistance to corrosion.

III. Installation and On-Site Acceptance

1. Installation Efficiency and Workmanship
   The installation time for a single module should comply with contractual agreements (e.g., only 4 hours for the Suzhou Zhongnan Quick-Assembly Container). On-site assembly should be completed using bolts, and complex welding is prohibited. During installation, data such as verticality, elevation, and bolt torque should be recorded.
2. On-Site Sampling Inspection
   Focus on verifying the fire resistance test reports of fireproof materials, the yield strength data of structural steel, and the compliance of electrical wiring installation. Non-conformities mainly involve the substitution of inferior fireproof materials (accounting for about 31%) and electrical wiring not protected by conduits (accounting for about 22%).

IV. Compliance and Traceability Management

1. Factory Certificates and On-Site Verification
   Documents such as the Class A fire resistance test report for rock wool sandwich panels and the quality certificate for structural steel must be provided and verified item by item against T/CECS 1932-2025.
2. Quality Traceability System
   Manufacturers should establish a quality traceability management system, implementing a comprehensive quality management system during production and storage. Key process records must be confirmed by on-site supervisory representatives.