Fire Requirements for Container Houses

The fire requirements for container houses mainly include aspects such as material fire resistance ratings, structural design, installation specifications, and usage management, as detailed below:

Material fire resistance ratings must meet standards
According to GB 50720-2011 'Technical Code for Fire Safety in Construction Sites', container houses used for residential or office purposes must employ Class A fire-resistant panels (such as rock wool sandwich panels). The use of flammable materials like polystyrene and polyurethane foam is prohibited. Class A materials do not burn in open flames, do not release toxic smoke, have stable combustion performance, and can effectively delay the spread of fire, buying time for personnel evacuation. For example, in the 2025 container house fire in Linping District, Hangzhou, the use of Class A materials might have reduced property losses.

Structural design must comply with safety standards
The main structure of container houses should adopt a steel frame, with key load-bearing components having a yield strength of no less than 345MPa to ensure stability during lifting and stacking. The container body should undergo overall galvanization or anti-corrosion coating treatment to extend its service life to over 15 years. If used for multi-story buildings, it is necessary to confirm that the manufacturer possesses multi-story frame connection technology and waterproof node treatment capabilities to avoid collapse risks due to structural defects.

Installation and acceptance must be standardized
Installation should be entrusted to professional teams to ensure a minimum spacing of 6 meters between container bodies, preventing the spread of fire. Electrical wiring should be protected with sleeves, and sockets and switch boxes should be made of metal galvanized boxes and installed openly to avoid short circuits that could cause fires. According to the T/CECS 1932-2025 'Quality Acceptance Standard for Container Houses', which came into effect on October 1, 2025, suppliers are required to provide third-party fire detection reports, structural calculation sheets, and factory inspection records to ensure that materials and processes meet quantitative indicators.

Usage management must be strict
During use, heat sources and open flames should be kept away from the container body, and open flame operations should maintain a safe distance; simple fire extinguishing equipment should be equipped, and electrical wiring should be regularly inspected; unauthorized disassembly of container components is prohibited to avoid damaging the fire-resistant structure. For example, in the container house fire in Binhai New Area, Tianjin, two individuals died from toxic smoke inhalation, highlighting the importance of standardized use and unobstructed escape routes.