How to Construct the Floor of a Mobile Toilet
The method for constructing the floor of a mobile toilet depends on the specific relocation approach. Here are common solutions and key construction points:
1. Using a Toilet Offset Connector
If adjusting the toilet position with an offset connector, first chisel the floor slab to a depth of approximately 20-40mm, embed the offset connector, and then level the ground. Next, apply a waterproof layer with a minimum height of 20mm, ensuring it covers the area around the offset connector to prevent future leaks. Finally, lay tiles, paying attention to sealing the joints between the tiles and the offset connector. This method is suitable for short-distance relocations (≤40cm), but ensure the floor slab thickness meets the chiseling requirements.
2. Same-Floor Drainage - Floor Slab Lowering
If the bathroom structure has reserved space for slab lowering (250-350mm), you can directly use this lowered area to arrange the sewage pipes. For backfilling, it is recommended to use lightweight bricks or blocks to avoid increasing the load on the floor slab. During floor construction, ensure the backfill layer is level, with the waterproof layer height not less than 20mm and extending at least 300mm up the wall. This solution does not require raising the floor but requires confirming that the original lowered slab height meets the piping layout requirements.
3. Same-Floor Drainage - Floor Slab Raising
Construct a base platform (height 180-200mm) to embed the horizontal sewage pipes, recommending the use of lightweight blocks for the base platform to reduce weight. After completing the base platform construction, proceed with normal floor waterproofing (height ≥20mm) and tile laying. This method is suitable for bathrooms without slab lowering options but requires attention to the height difference between the raised floor and other indoor areas to avoid inconvenience for the elderly or children.
4. Hidden Cistern Relocation
If relocating the cistern, construct a low wall (thickness 180-220mm, height 900-1200mm) to enclose the cistern and piping. The floor treatment should coordinate with the cistern installation height to ensure the toilet sits flush with the floor after installation. The waterproof layer should cover the junction between the low wall and the floor and extend a certain height up the wall to prevent moisture penetration.
5. Sewage Lifting Pump Relocation
It is recommended to install the lifting pump visibly behind the toilet, with the piping hidden in the ceiling. Reserve maintenance space on the floor (such as removable tiles or access panels) for easy future maintenance. The waterproof layer should focus on treating the area around the lifting pump base to prevent water accumulation and equipment damage. This solution is suitable for long-distance relocations (>40cm) or complex piping layouts but requires regular inspection of the equipment's operational status.
Precautions:
- Ensure the waterproof layer is properly applied in all solutions, especially at vulnerable points such as where pipes penetrate the floor slab and at wall-floor junctions.
- For relocations exceeding 40cm, prioritize wall-hung toilets or sewage lifting pump solutions to reduce the risk of blockages.
- If there are elderly or children in the household, evaluate the impact of raised or lowered slab solutions on mobility and, if necessary, add anti-slip treatments or assistive devices.
