Container House Standard Specifications

The standard specifications for container houses cover four core areas: construction quality acceptance, technical regulations, classification and construction, and compliance requirements for use. Details are as follows:

Construction Quality Acceptance Standards
According to the 'Container House Construction Quality Acceptance Standards', the acceptance process is divided into three parts: material quality, factory production quality, and on-site project quality. Production enterprises are required to establish testing departments and quality traceability systems, prioritizing the use of BIM models to assist in acceptance to ensure traceability of the production process. Construction units or supervision units should send representatives to supervise on-site at the factory. For inspection lots to be qualified, they must meet the sampling inspection requirements for both main control items and general items. For example, main control items such as steel welding quality and container body sealing must be 100% qualified, while general items are allowed minor deviations but must comply with specification limits.

Core Requirements of Technical Regulations
Current standards include CECS334:2013, JGJ/T 469-2019, and GB/T51329-2018, with an applicable scope limited to low-rise and multi-story buildings (number of floors ≤ 6, height ≤ 24 meters, seismic fortification ≤ 8 degrees). Structurally, a pure steel frame load-bearing system is required, with corner fittings being the only stacking load transfer points. Steel materials must comply with welding weathering steel standards to adapt to outdoor environments. In terms of fire protection, EPS and other flammable core materials are prohibited for enclosure filling materials. Crowded places (such as homestays and shops) must use Class A rock wool or glass wool to ensure compliance with fire resistance limits.

Classification and Construction Specifications
Container houses are classified by structural origin into custom fixed and variable box modules; by forming process into integral welded, light steel frame, and plug-in types; by spatial combination form into single-box landing, horizontal box assembly, vertical box stacking, etc.; by functional use into accommodation, office, and commercial service types; by material into steel, aluminum alloy, and composite sandwich panel boxes; and by mobility into fixed, towed mobile, and folding transport types. Different types must match corresponding technical standards. For example, towed mobile types must meet road transport safety requirements, and composite sandwich panel boxes must pass fire performance tests.

Compliance Requirements for Use
The approval process varies significantly depending on the use: temporary storage on farmland or rooftops must meet the 'three no' conditions (no hardening of the ground, no connection to water and electricity, and only storage of agricultural supplies and tools); commercial uses (such as homestays and shops) require land use approval, planning filing, and fire protection permits, with priority given to commercial or cultural and tourism land; residential use requires formal building construction permit applications, with a height limit of no more than 6 floors and a total height ≤ 24 meters. Non-compliant use may face the risk of demolition, such as the construction of commercial container houses on farmland being identified as illegal construction.