Prefabricated House Plumbing and Electrical Renovation Atlas

Currently, a complete set of content directly targeting the 'Prefabricated House Plumbing and Electrical Renovation Atlas' has not been found. However, based on the experience of plumbing and electrical renovations in conventional home decorations, the following key design points are provided for reference:

1. Plumbing and Electrical Ceiling Installation Techniques
When installing hot and cold water pipes on the ceiling, use soundproof cotton of different colors for differentiation: red for hot water pipes and blue for cold water pipes. It is recommended to use red PVC pipes for strong electrical conduits and green pipes uniformly for hot and cold water pipes. Ceiling installation facilitates later maintenance and inspection, but it is essential to ensure that the pipelines are firmly fixed to prevent loosening due to building settlement or vibration. For prefabricated houses, special attention should be paid to inspecting the pipeline fixing methods at the connections between walls and ceilings to avoid compromising the structural stability of the house.

2. Spatial Outlet Design

• Kitchen: The main sewer pipe is a thick white pipe. The cold and hot water outlets for the sink are located at low-level threads, while those for the gas water heater are at high-level threads. The electrical circuit should include a separate loop for the refrigerator. High-power appliances such as ovens and steam ovens should have dedicated wires of 4 square meters or 6 square meters based on their power ratings to prevent overloading.
• Bathroom: Low-level threads are for the cold and hot water outlets of the sink, while high-level threads are for the shower. The bathroom heater or ventilation fan requires a separate loop. Outlets for the mirror cabinet heater, smart toilet, and hairdryer should be reserved separately to avoid tripping due to concentrated electricity usage.
• Bedroom/Living Room: Two sockets and a single-pole double-throw switch panel should be reserved at the bedside for nighttime convenience. Sockets should be reserved above and below the computer desk to meet device charging needs. The switch control panel in the living room is recommended to be placed high on the wall to prevent children from accidentally touching it. For prefabricated houses, the outlet opening method should be adjusted according to the wall material (such as light steel keels or concrete) to avoid damaging the structure.

3. Maintenance Accessibility Design
It is recommended to route the plumbing and electrical lines for the kitchen, bathroom, balcony, lighting, and central air conditioning inside the ceiling. In case of a fault, only the local ceiling panels need to be removed for repair. Ordinary sockets can be routed vertically along the wall or on the floor according to their locations. However, for wet areas (such as bathrooms and balconies), overhead equipment (such as bathroom heaters), and easily damaged circuits (such as those for smart toilets), removable maintenance structures should be reserved, such as setting up inspection ports or using modular designs. For prefabricated houses, maintenance plans should be designed in conjunction with the wall's removability to avoid difficulties in repair due to enclosed walls.

4. Material and Cost Optimization
The length of pipelines installed on the ceiling increases, leading to a rise in material costs for PVC pipes and pipe clamps by approximately 15%-20%. If the ceiling height is around 2.6 meters, it is recommended to install partial ceilings (such as in the kitchen, bathroom, and hallway) to avoid lowering the space with a full plaster ceiling. For prefabricated houses, lightweight materials should be selected according to the house structure to reduce pressure on the wall's load-bearing capacity.

Tip: The above content is based on the experience of conventional home decorations. For prefabricated houses, designs should be further adjusted according to the特殊性 (particularities) of wall materials and structural stability. It is recommended to consult professional plumbing and electrical engineers or prefabricated house manufacturers for tailored solutions.