Height of Drainage Position for Mobile Toilets

The height of the drainage position for mobile toilets needs to be determined based on the type of drainage and the relocation plan. The adjustment methods and core principles under different scenarios are as follows:

I. Adjusting the Drainage Position Height According to Drainage Type

1. Same-Floor Drainage
   The bathroom floor is equipped with a sunken box, and there are no drainage pipes on the ceiling. During relocation, due to the presence of sunken space, there is a high degree of freedom for modification. The height of the drainage position can be adjusted according to actual needs, for example, by adjusting the layout of pipes within the sunken box to change the height of drainage outlets for equipment such as toilets and sinks.

2. Inter-Floor Drainage
   The bathroom floor has no sunken space, and the drainage pipes are located at the top. The adjustment methods need to be discussed on a case-by-case basis:

• Short-Distance Relocation (≤100mm): When using a toilet relocator, a groove 30-40mm deep can be cut into the floor to directly connect to the original drainage outlet without raising the floor.
• Long-Distance Relocation: If a flat relocator is selected, due to insufficient pipe slope, it is prone to blockage, and the toilet position needs to be raised by about 150-180mm. Alternatively, by negotiating with the downstairs neighbor to drill a hole in the floor slab and re-lay the pipes, or by using side-discharge toilets or wall-mounted toilets to adjust the height of the drainage position.

II. General Principles and Construction Specifications

1. Standard for Reserved Drainage Outlet Height
   The height of the drainage outlet should be determined based on the equipment and should be "lower rather than higher if possible." For example, a 110mm diameter pipe should be reserved for the toilet, and when connecting the sewage pipe to the riser, a height difference of at least one pipe diameter (110mm) should be maintained to prevent sewage backflow.

2. Slope Requirements for Long-Distance Relocation
   When using a flat-pipe relocator, the pipe should be raised by 5mm for every 100mm of movement to form a slope and ensure smooth drainage. At the same time, the total height of the floor raise needs to be comprehensively calculated, including the pipe height (50-60mm), groove depth (20-40mm), and the thickness of later floor leveling and tiling (about 30-50mm), to avoid affecting use due to excessive cumulative height.

3. Anti-Blockage and Anti-Backflow Measures
   For long-distance relocation, priority should be given to using dedicated relocators with slopes to avoid using flat pipes. If re-laying pipes is not possible for inter-floor drainage, a trap can be installed to enhance sealing and reduce odors and backflow risks.

Summary: The adjustment of the drainage position height for mobile toilets needs to be comprehensively designed based on the drainage type, relocation distance, and equipment requirements, strictly following specifications such as slope and height difference to ensure drainage functionality and user comfort.