Container Duplex House Design Drawing
Currently, there is no directly available complete design drawing for container duplex houses, but reference plans can be provided based on existing cases and design logic. The following explains from three aspects: structural splicing, functional zoning, and lighting and heat insulation.

I. Structural Splicing Methods
Container duplex houses typically achieve spatial stratification through vertical stacking or offset splicing. For example, in the case of Guangzhou Jinge Company, three 40-foot containers are horizontally spliced to form a planar foundation of 11.8m×6.75m. Then, by partially raising or stacking containers, a second-floor space is constructed, ultimately forming an 80-square-meter duplex structure. If two containers are used, the splicing logic of single-story cases can be referenced. One container is vertically cut into two parts, with the upper part serving as a second-floor bedroom or study, and the lower part connecting with the other container to form a public area. The upper and lower floors are connected by stairs.
II. Functional Zoning Design
For duplex structures, it is necessary to clearly define dynamic and static zones. The first floor can be set up as a public activity area, including a living room (with sofas, coffee tables, and TVs), an open kitchen (with integrated stoves and refrigerators), and a dining room (with foldable dining tables). A large door can be opened at the end of the container to create a sense of openness. The second floor is a private resting area, with 1-2 bedrooms (equipped with 1.8-meter double beds and wardrobes) and a bathroom (with separate wet and dry areas and reserved space for a bathtub). If space permits, an office or leisure area can be added on the second floor, with functions divided by bookcases and office desks. It should be noted that the stair location should avoid major activity areas to reduce space occupation.
III. Lighting and Heat Insulation Optimization
For lighting, the large-scale floor-to-ceiling window design of single-story cases can be referenced, with large glass windows installed on the sides or ends of containers to introduce natural light. A skylight can be added on the second floor to improve upper-floor lighting efficiency. For heat insulation, triple-glazed windows (three layers of insulated glass) should be used to reduce heat conduction. At the same time, an internal insulation layer (such as polystyrene board or rock wool board) should be laid on the inner walls of the container to block the influence of external high or low temperatures. In hot regions, a sunshade or reflective coating can be added to the roof to further reduce indoor temperature.
Design Extension Suggestions: The duplex structure can increase design flexibility by adjusting the number of containers (such as splicing four containers to form a larger space) or changing the splicing angle (such as an L-shaped layout). For interior decoration, lightweight materials (such as aluminum ceiling panels and composite flooring) can be used to reduce the load-bearing pressure of the container while improving living comfort.




