Container House Design Code

The Container House Design Code is primarily based on standards such as CECS 334:2013 'Technical Code for Modular Container Houses', JGJ/T 469-2019 'Technical Code for Container-Type Modular Houses', and GB/T 51329-2018 'Technical Standard for Modular Container Buildings'. The key points are as follows:

1. Scope of Application and Basic Requirements
The code applies to low-rise and multi-story modular container houses, with a maximum of 6 stories and a height not exceeding 24 meters, and a seismic fortification intensity not exceeding 8 degrees. The design service life is divided into 50 years (structural safety grade ≥ 1.0) or 25 years (≥ 0.95). Existing containers must comply with the inspection standard GB/T12418, ensuring that beams and columns are free from defects, all 8 corner fittings are intact and reliable, and are accompanied by quality certification documents.

2. Structural Load-Bearing and Construction Specifications
The structure adopts a pure steel frame system, with non-load-bearing components such as wall panels, roof panels, and glass not participating in load-bearing. The load transfer path is 'panel secondary beam → main beam → corner column → corner fitting → foundation/lower container'. Corner fittings are the only stacking load transfer points, and spot welding is strictly prohibited as a substitute. In terms of steel selection, container components must use welded weathering steel (GB/T 4171), while non-container components can use Q235B or Q345B (GB/T 700, GB/T 1591). When large openings weaken stiffness, a staggered and symmetrical arrangement of perforated and non-perforated containers should be adopted; the cantilever length must be strictly controlled, and no openings are allowed in the cantilevered section. Lateral force-resisting components must be symmetrical in plan and uniform in vertical stiffness. When stacking multiple containers, corner fittings and corner columns must be aligned and locked vertically.

3. Fire Protection and Corrosion Prevention Requirements
Filling materials for the enclosure structure must not use flammable core materials such as EPS. For crowded places, Class A rock wool or glass wool should be used, with fire resistance ratings controlled according to GB50016 (commonly requiring ≥ 0.5 hours, with stricter requirements for high-rise modules). Steel structures must be coated with fire-resistant paint, and fire compartments should be set up on each floor. The clear width of escape routes must be ≥ 0.9 meters, and fire extinguishers, smoke detectors, and emergency lighting must be installed, with standards consistent with those for public buildings.