Safety Issues of Container Houses

The safety issues of container houses involve multiple aspects such as fire safety, multi-story structural safety, and impacts on human health, requiring targeted prevention measures.

Fire Safety Hazards

The fire risks of container houses mainly stem from the materials used in construction and their structural characteristics. To reduce costs, some temporary buildings on construction sites and illegal structures built by enterprises often use flammable materials such as polystyrene and polyurethane foam as core materials. These materials have poor fire resistance and can be ignited by sources such as electrical welding sparks and cigarette butts. At 80℃, they will melt, deform, and drip, with the drippings further accelerating the spread of the fire and producing highly toxic combustion products. After a fire breaks out, it spreads rapidly, and the iron-clad structure makes it difficult for water cannons to shoot water inside, increasing the difficulty of firefighting. Meanwhile, the thick black smoke produced by combustion quickly accumulates inside the room, releasing toxic gases, making it difficult for trapped individuals to escape and easily leading to casualties.

Safety of Multi-Story Container Houses

The safety of multi-story container houses needs to be comprehensively considered from aspects such as structural stability, seismic performance, fire protection design, and the arrangement of emergency exits. Steel structural materials inherently have high strength, and through reasonable design and reinforcement (such as using customized modular structures and special connectors to fix the container bodies to the foundation), the stability of multi-story houses can be ensured. To meet seismic requirements, seismic reinforcement measures can be added to enhance the overall anti-overturning capacity. In terms of fire protection, although steel has better fire resistance than wood, fire separation zones and fire escape routes still need to be set up to delay the spread of fire and ensure safe evacuation. In addition, multi-story houses must have emergency exits reasonably planned, with stairs, escape doors, and other facilities installed, and strictly comply with stacking height limits—these limits are influenced by factors such as foundation bearing capacity, soil stability, the rationality of structural design, and local regulatory standards.

Safety Related to Impacts on Human Health

Container houses may pose a risk of formaldehyde pollution. If polystyrene foam boards are used in the sandwich layer of the color-coated steel sheets in brand-new containers, formaldehyde may be released. Long-term exposure to low doses of formaldehyde may cause respiratory diseases (such as asthma and bronchitis), and even increase the risk of cancers such as nasopharyngeal cancer, colon cancer, and brain tumors, while also leading to menstrual disorders and gene mutations. However, in actual use, the formaldehyde content in mobile homes is usually low, and there have been no clear cases of human harm reported. To reduce risks, it is recommended to prioritize the use of environmentally friendly materials and conduct ventilation before moving in.