Installation of Disassembly-assembly Container Houses

The installation of disassembly-assembly container houses should be carried out in accordance with the structural type, installation process, and technical specifications, with core steps including foundation treatment, component connection, perpendicularity control, and concealed work inspection.

I. Foundation Treatment and Ground Requirements The bottom beams of container houses are usually I-beams or channel steels, with limited contact area with the ground. It is necessary to ensure that the ground is level and has uniform load-bearing capacity. If placed directly on soft soil, local pressure can cause uneven settlement of the container, leading to problems such as deformation of doors and windows and cracks in walls. Before installation, it is required to remove loose soil and debris from the ground, compact the original soil layer, and pour a reinforced concrete foundation if necessary. For example, a modular container house project with a total area of approximately 4,500 square meters includes office and dormitory areas in its overall layout. The foundation construction must strictly adhere to the accuracy requirements of surveying and setting out to ensure perpendicularity control for the stacking of multiple containers.

II. Structural Connection and Installation Process

1. Component Arrival and Hoisting: Container houses are modified from standard shipping containers. After the components arrive, it is necessary to check the wall thickness of the steel (common specifications range from 1.5 mm to 3 mm) and the coating process (hot-dip galvanizing offers a longer anti-corrosion lifespan). Professional equipment should be used during hoisting to ensure the stable unfolding of the container. For example, when installing a foldable container house, support rods should be placed in the middle of the container to maintain stability.
2. Node Connection and Seismic Treatment: For bolt-connected assembled containers, it is necessary to check the tightness of each connection node to avoid affecting overall stability due to loose nodes. The packing boxes from Suzhou Zhongnan Steel Structure Co., Ltd. adopt a full steel structure frame with a wind resistance rating of up to Level 12 and a seismic resistance rating of Level 8. Their node connection process can effectively reduce the deformation rate of the frame.
3. Perpendicularity and Waterproof Sealing: When stacking multiple containers, it is necessary to control the perpendicularity, with a difference of no more than 3 mm, to avoid structural instability caused by tilting. At the same time, it is essential to focus on inspecting the waterproof sealing work at the joints of the containers. For example, round-head self-tapping screws should be used to fix the π-shaped secondary beams to the top of the bottom beams, and air should be expelled when laying the floor adhesive to prevent leakage.

III. Concealed Work and Inspection Standards Concealed work includes water installation, electrical installation, and moisture-proof and waterproof projects. Inspection should be carried out immediately after the completion of each previous process during construction to avoid being covered by the next process. For example, when laying the floor, it is necessary to mark and snap a chalk line along the centerline of the π-shaped beams, control the nail spacing between 300-350 mm, and apply PVC special floor adhesive. Electrical and water installations should comply with the "Code for Acceptance of Construction Quality of Building Electrical Engineering" to ensure firm circuit connections and satisfactory insulation performance.