Container House Drainage Pipe

The design and installation of drainage pipes for container houses need to be carried out in combination with the house type, drainage requirements, and installation specifications, usually involving the independent setting of rainwater pipes and sewage pipes, the selection of pipe materials, and the handling of installation details. Details are as follows:

1. Pipe Types and Functional Divisions

The drainage system of container houses generally includes two types of pipes: rainwater pipes and sewage pipes, which need to be set up independently to avoid cross-contamination. Rainwater pipes are used to collect rainwater from roofs or walls and are connected to rainwater pipes on the exterior wall facade through drainage outlets and rainwater hoppers, ultimately discharging into outdoor rainwater inspection wells. Sewage pipes are responsible for the wastewater discharge from areas such as kitchens and bathrooms, and the pipe material and direction need to be selected according to the degree of oil contamination and usage scenarios. For example, due to the high oil content in kitchen wastewater, a separate pipe should be set up and mixed connections with other drainage pipes should be avoided to reduce the risk of blockage.

2. Pipe Materials and Installation Methods

1. Material Selection:

   • Rainwater pipes and sewage pipes mostly use PVC-U drainage pipes, which have corrosion resistance and pressure-bearing performance that meet national standards and are easy to install.
   • For high-rise buildings or scenarios with large drops, simple energy dissipators (one every six floors) or spiral sound-absorbing pipes may need to be installed to reduce drainage noise and pipe impact.

2. Installation Methods:

   • Exposed Type: Rainwater pipes are installed along the exterior wall facade and need to be connected through drainage outlets and rainwater hoppers after the roof is sloped to ensure smooth drainage.
   • Concealed Type: If aesthetics are required, pipes can be pre-buried during the main construction phase and hidden through wall masonry, but the direction and position need to be planned in advance to avoid difficulties in later maintenance.
   • Basement Drainage: A sump pit (recommended size: 500mm×500mm×500mm), drainage trenches (width: 100mm), and a forced drainage pump need to be set up, and the wastewater is discharged to the outdoor inspection well through buried pipes.

3. Key Installation Details

1. Slope and Fixing:

   • The pipes need to maintain a certain slope (usually not less than 1%) to ensure the self-flow discharge of wastewater.
   • The pipe connections need to use special glue or hot-melt welding to avoid leakage; the spacing of fixing brackets should comply with the specifications (e.g., the spacing of PVC pipe brackets should not exceed 1.5 meters).

2. Odor Prevention and Maintenance:

   • Floor drains in bathrooms, sinks, and other branch pipes need to be installed with water traps (P-type/S-type) or water seal devices to prevent odor backflow.
   • Pipes passing through floors or walls need to be fitted with sleeves and sealed for easy later maintenance.

3. Handling of Special Scenarios:

   • If the container house needs to be moved frequently, a detachable design is recommended for pipe connections to avoid damage during lifting.
   • In cold regions, outdoor pipes need to be insulated to prevent freezing and cracking.