Old Container Refitted House
Old containers can be refitted into versatile and eco-friendly houses, meeting residential needs and enabling material recycling through structural optimization, thermal insulation treatment, and creative design.
1. Structural Optimization and Stability Enhancement
The traditional container's bottom frame has large longitudinal beam spacing, which can lead to insufficient floor stiffness when used directly as living space. By installing C-shaped steel purlins between the bottom beams, the load can be evenly distributed to each main beam, allowing the container to maintain structural stability even when stacked three layers high. Additionally, shot blasting and rust removal on the container surface followed by spraying with zinc-rich primer and polyurethane topcoat forms a protective system, enabling the steel to maintain effective service life for over 15 years in environments with wind, sand, and temperature variations in northwest China.
2. Thermal Insulation Performance Improvement
Container houses face challenges from the thermal bridge effect of metal walls. The conventional approach is to attach insulation boards on the inside, but this can easily create heat conduction channels at the steel framework. The improved solution adopts a thermal break lining structure, filling hard polyurethane foam between the steel framework and interior wall panels, and installing rubber thermal insulation pads at the framework connections, reducing heat exchange efficiency between the interior and exterior of the container by about 40%. For camp dormitory projects, this treatment can raise the indoor temperature by 8 to 10 degrees Celsius compared to the outside in winter without heating, thereby reducing reliance on heating equipment energy consumption.
3. Environmental Protection and Recycling Value
The core value of container houses lies in the full lifecycle recycling of their materials. Each standard 20-foot container consumes about 1.2 tons of steel. If a one-time poured concrete temporary house is used instead, the carbon emissions from the concrete and steel required for the same area are 2.3 times that of a container house. More critically, when the camp is relocated or the project ends, the container house can be hoisted as a whole to a new site, with disassembly and assembly loss controlled within 5%. Compared to traditional prefabricated houses, which require replacing a large amount of paneling each time they are disassembled, this modular moving approach significantly reduces construction waste generation.
4. Creative Design and Functional Expansion
The design of container houses is diverse and unrestricted, with a wide range of applications. By staggering and splicing multiple container units, community spaces with patios or courtyards can be formed. Installing photovoltaic panels on the container roof enables partial self-sufficiency in energy. The integration of a prefabricated bathroom system and smart control modules allows the single building to operate independently. Additionally, container houses can be customized according to personal needs, such as adding hydraulic decks, foldable beds, and other designs to enhance living comfort and space utilization.
