Container House Foundation Drainage

The foundation drainage of container houses needs to be designed according to the type of house. The requirements for foundation and drainage of common types are as follows:

Foldable/Fixed Residential Container Houses

These types of houses have relatively low requirements for the foundation. They can be directly placed for use just by leveling the ground. If conditions permit, a cement floor can be poured and drainage ditches can be set up to improve living comfort. The function of drainage ditches is to guide surface runoff and prevent water from seeping into the foundation, which could lead to settlement or the house getting damp. For example, temporary housing on construction sites often adopts such simple treatment methods, achieving drainage through natural slopes or manually excavated shallow ditches.

Packing Container Houses

Their foundation design is flexible. Strip foundations, pier foundations can be used, or they can even be placed directly on the ground without a special foundation. If enhanced drainage performance is required, drainage slopes or concealed ditches can be set up around the foundation. For example, the packing container houses developed by Nanjing Changyou Zhizao use a built-in drainage system to direct accumulated water into gutters for discharge, ensuring dry interiors on rainy days. This design makes up for the deficiencies in foundation treatment through structural optimization and is suitable for areas with stable geological conditions but high drainage requirements.

Residential Portable Panel Houses

These types of houses have strict requirements for the foundation. A certain area of concrete foundation needs to be poured, and the house is fixed to the foundation with expansion screws. The drainage system needs to be planned simultaneously with foundation construction. For example, circular drainage ditches or seepage wells can be set up around the foundation to prevent rainwater accumulation from softening the foundation. It should be noted that when portable panel houses are relocated, the first-floor concrete foundation usually cannot be reused. Therefore, the drainage design needs to take into account both long-term use and the convenience of removal.

Handling of Special Scenarios

If there is a risk of long-term water accumulation around container houses (such as near rivers or rice paddies), additional protective measures are required. For example, in one case, a house was affected by foundation soaking and wall cracking due to its proximity to a rice paddy. The problem was alleviated by removing the field ridge and adding open ditches for drainage. In such scenarios, it is necessary to comprehensively evaluate geological conditions, hydrological environment, and house structure. If necessary, pile foundations or waterproof layers can be used to reinforce the foundation.