Dalian Container House Customization

Customization of container houses in Dalian is a systematic project that involves transforming standard containers and integrating functions according to specific needs. Its core lies in breaking through the limitations of the original shipping containers and achieving customized requirements through structural optimization and functional design. The following elaborates on four aspects: technical processes, key links, environmental adaptability, and service brands.

I. Technical Processes and Structural Modifications
Customizing container houses requires breaking through the original size limitations and achieving expansion through vertical stacking or horizontal connection. Modular expansion can be achieved through two technical paths: integral welding, suitable for fixed buildings, and specialized connectors, facilitating later disassembly and reassembly. Structural safety is the core of modification, necessitating precise calculation of node forces to ensure the stability of expanded units under wind loads (a key consideration in coastal areas) and snow loads (reinforcement required in cold regions). In terms of spatial reconstruction, the original corrugated steel plates need to be upgraded for thermal insulation. A common solution is to construct an air gap inside the walls and fill it with rock wool with a combustion performance rating of A, while adding a moisture barrier and breathable paper to form a water vapor barrier system. When creating openings for doors and windows, it is essential to avoid load-bearing columns and reinforce the edges of the openings with cold-formed steel sections to prevent deformation caused by stress concentration.

II. Functional Integration and Equipment Layout
The internal equipment system adopts an embedded design to optimize space utilization (requiring over 75% efficiency). Electrical wiring is laid between the thermal insulation layer and the interior decorative panels, while water supply and drainage pipes are planned within the gaps of the floor joists. All circuits are equipped with double insulation protection to avoid the risk of electric leakage. The ventilation system employs diagonally arranged air inlets and exhaust fans to form convection channels and improve air quality. Functional integration requires balancing modification costs (which need to be controlled within the range of 40%-65% of the cost of constructing a new traditional building) and structural safety factors (which must meet building code requirements). For example, cold-rolled steel plates with a thickness of over 0.8 millimeters are used as the base material for interior lining walls, and the window-to-wall ratio does not exceed 60% to reduce heat loss.

III. Environmental Adaptability Adjustments
For different climatic conditions, modifications require specialized optimization: In coastal areas, three layers of epoxy zinc-rich primers need to be sprayed on the exterior of the container to prevent salt spray corrosion; in cold regions, the ground foundation needs to extend below the frost line, and polyurethane insulation boards need to be added at the bottom of the container to block cold bridges; in rainy environments, the drainage system needs to be designed with a slope of over 5%, and elastic sealants need to be used at the joints for dynamic waterproofing. Additionally, due to thermal expansion and contraction of metal containers (resulting in millimeter-level deformation for every 10-degree Celsius change in temperature), it is necessary to reserve deformation allowances for connectors to avoid structural cracking caused by temperature stress.

IV. Service Brands and Customization Scope
There are more than 20 brands in Dalian that provide customized container house services, including Hanzhizhu, Junhui Construction, Hongyuan, and Jinye Construction. Their service scope covers the surrounding areas and the entire region of Dalian. These brands can prefabricate container houses and packing-box units in various craft sizes and styles and provide customized services for mobile homes, meeting diverse needs such as temporary offices, residences, and commercial displays.