Container House Water Supply and Drainage

The water supply and drainage design of container houses needs to comprehensively consider drainage, water supply, and waterproofing treatments, ensuring safety and comfort in use through reasonable layout and system design.

I. Drainage System Design

1. Terrain and Drainage Ditches
   When installing a container house, the ground level should be higher than the surrounding environment to prevent rainwater from flowing back. Drainage ditches should be excavated around the container to guide rainwater away quickly, avoiding water accumulation and infiltration into the bottom of the container. For example, in the customization of non-standard container houses in Shanghai, it is explicitly required that the ground level be higher than the surrounding area and that drainage ditches be set up.
2. Roof Drainage
   The roof should be designed with a slope, typically using a gable roof or a single-slope roof, to ensure that rainwater flows smoothly into the drainage troughs. The packaged container houses manufactured by Nanjing Changyou Zhizao effectively avoid leakage by using an internal drainage system to direct accumulated water into the troughs and out.
3. Gutters and Outlets
   Gutters should maintain a horizontal slope, and the design of outlets should be reasonable to avoid water accumulation. If the gutter's anti-corrosion treatment is inadequate or if it becomes clogged, it may lead to water leakage or backflow, necessitating regular inspection and cleaning.

II. Water Supply System Design

1. Municipal Water Supply Connection
   Container houses can be connected to the municipal water supply system to meet daily water needs. If there is no municipal water supply on-site, additional water tanks or storage equipment should be installed, and water should be supplied through a pump for pressurization.
2. Water Tank Configuration
   The capacity of the water tank should be determined based on the number of users and the frequency of water use, typically used in conjunction with the municipal water supply to ensure water stability. For example, container shower rooms can be equipped with rainwater collection systems to achieve water resource recycling.

III. Waterproofing Treatment Points

1. Roof and Wall Sealing
   The connection between the roof and walls should be sealed with waterproof adhesive to prevent rainwater infiltration. Fasteners (such as screws) should be equipped with waterproof gaskets, and regular inspections should be conducted to check for aging and timely replacement.
2. Joint Treatment
   The joints of container拼接 (splicing) areas and around openings (such as fans and exhaust pipes) should be reinforced with waterproofing treatments using qualified waterproof materials to prevent cracks from expanding due to thermal expansion and contraction or external forces.
3. Ground Waterproofing
   A waterproof layer should be applied at the contact point between the container's bottom beam and the ground to prevent ground moisture from rising and causing rust on the container. For containers that are permanently fixed, it is recommended to pour a concrete strip foundation and lay a moisture-proof layer.