Container House Water System Design Drawing

The water system design for double-story residential container houses should adhere to the principles of 'centralization, concealment, efficiency, and standardization,' covering both water supply and drainage systems. The specific design points are as follows:

I. Water Supply System Design

1. Water Source Introduction and Preliminary Treatment
   The water source is connected to the ground floor through the main water supply pipe. At the entrance, a master valve (to control the overall water supply), a water meter (to measure water consumption, configured as needed), and filtration equipment (such as a pre-filter to remove sediment and other impurities) should be installed. If the water quality is poor, a central water purification system can be added.

2. Vertical and Horizontal Pipe Layout

   • Vertical Main Pipes: These should be laid along corner columns or dedicated pipe shafts to transport water to the second floor, minimizing space occupation and facilitating maintenance.
   • Horizontal Branch Pipes: These should branch out within the ceiling cavity or floor joist space on each floor, leading to water points such as kitchens and bathrooms. The pipes should be securely fixed to avoid vibration noise.

3. Water Pressure Regulation Measures
   If there is a significant difference in water pressure between the two floors (e.g., insufficient pressure on the second floor), a small pressure-reducing valve can be installed at the starting point of the second-floor branch pipe (to prevent excessive pressure at water points), or a booster pump can be added on the ground floor (to increase the overall water supply pressure).

4. Insulation and Protection
   Pipes exposed outdoors or in non-heated areas (such as in northern regions) should be wrapped with rubber-plastic insulation cotton to prevent freezing and cracking at low temperatures. Pipes passing through walls should be fitted with sleeves and sealed to prevent leakage.

II. Drainage System Design

1. Same-Floor Drainage Principle
   The drainage branch pipes for sanitary fixtures (such as toilets and sinks) on the ground floor and second floor should be collected separately beneath the floor of each floor and connected to the horizontal main drainage pipe, reducing the risk of leakage caused by cross-floor drainage.

2. Pipe Slope and Connection

   • Main Drainage Horizontal Pipe: It should maintain a slope of 0.5%-1% to ensure that sewage naturally flows to the main drainage riser or the interface with the outdoor septic tank/municipal sewer network.
   • Main Drainage Riser: The horizontal pipe on the second floor is usually connected to the riser in the ceiling space of the corresponding position on the ground floor, and the riser is laid vertically to the roof or high on the side wall.

3. Pipe Material and Ventilation Design

   • Pipe Material Selection: PVC-U pipes (corrosion-resistant and lightweight) are preferred for drainage pipes, with special glue used to seal connections.
   • Vent Cap: Each main drainage riser must extend above the roof or high on the side wall and be fitted with a vent cap to balance the air pressure inside the pipe and prevent the destruction of the water seal, which could lead to the backflow of odors.

4. Water Trap Installation
   A water trap must be installed beneath each drainage fixture (such as floor drains and sinks) to isolate sewer odors using a water seal. The height of the water seal in the water trap should be ≥50mm.

III. Design References and Extensions

The water and electricity drawings of a container office building at a construction site (such as the floor plan layout for water supply and drainage in the canteen) can serve as technical references. The design should cover the power distribution system, strong and weak current layouts, and the coordinated installation details of water and electricity to ensure overall functionality and safety. In actual design, adjustments should also be made based on local regulations (such as pipe spacing and fire protection requirements) and usage needs.