Toilet Piping in Prefabricated Slab Houses

There are mainly two methods for toilet piping in prefabricated slab houses: wall drainage and floor drainage, each with its own characteristics and construction points.

Floor Drainage Method

Floor drainage is the most common traditional approach for toilet piping in prefabricated slab houses. Its principle involves the drainage pipe passing downward through the floor slab from the bottom of the sanitary fixtures and connecting to the drainage system on the lower floor or the same floor. The advantages of this method include mature construction techniques, simple structure, relatively low technical difficulty, and familiarity with the operation process among construction workers, enabling relatively quick installation. Moreover, as a traditional drainage method, its stability and reliability have been verified through long-term use, and it is relatively easy to identify and address issues during maintenance. However, the floor drainage method also has some drawbacks. The exposed drainage pipes can affect the overall aesthetics of the bathroom and occupy a certain amount of floor space, which may not meet the needs of some bathroom designs that pursue simplicity and aesthetics.

Wall Drainage Method

Wall drainage involves hiding the drainage pipes as much as possible within walls, false walls, or dedicated pipe spaces, and then connecting them to the drainage riser from the wall direction. The biggest advantage of this method is that it makes the bathroom cleaner. By hiding the drainage pipes, the bathroom looks more concise and elegant, enhancing the aesthetics and overall sense of the space. However, the wall drainage method has higher requirements for pipe design, slope, construction accuracy, and post-maintenance. In terms of pipe design, it is necessary to accurately calculate the direction and slope of the pipes to ensure smooth drainage of sewage and avoid issues such as blockages. Construction accuracy is also crucial; inaccurate installation may lead to poor drainage or water leakage. During post-maintenance, since the pipes are hidden within walls or false walls, the maintenance difficulty is relatively high, requiring the removal of part of the wall for inspection and repair.

Handling Special Situations

If the bathroom has a prefabricated hollow floor slab, holes can be drilled to install the toilet drainage pipe, but care must be taken not to break the steel bars inside the floor slab. The steel bars in the floor slab are key components that ensure the structural strength and stability of the floor slab. Breaking them can seriously affect the safety of the floor slab. Therefore, when drilling holes, try to position them near the edges and corners, avoiding the locations of the steel bars to ensure construction safety.