Mobile Toilet Bowl Sinking

Mobile toilet bowl sinking is usually related to the design of sunken bathrooms and can be reasonably installed by adapting to the sunken structure, adjusting the height, and following standardized construction practices.

I. Adaptation Plan for Sunken Bathrooms

Sunken bathrooms inherently have a sunken depth (sump) of 300 to 400 millimeters, allowing the squat toilet to be installed directly within the sump so that the upper surface of the toilet bowl is flush with the bathroom floor. During installation, a recess must be reserved within the sump, with a depth controlled between 25 and 28 centimeters, slightly higher than the height of the squat toilet itself (usually 20 to 25 centimeters), to allow for adjustments during filling and sealing. This design can conceal drainage pipes, reduce drainage noise, and enhance waterproofing safety through secondary drainage design (installing a drainage outlet at the bottom of the sump) to prevent water accumulation and leakage to the floor below.

II. Coordinated Design of Traps and Pipes

The odor prevention and smoothness of the drainage system require the selection of squat toilet models based on pipe conditions:

• If the sewer pipe has a built-in trap (such as a building odor prevention bend), a squat toilet without a trap should be selected to avoid increased drainage resistance caused by a double trap, which can lead to blockages or slow drainage.
• If the pipe has no trap, a squat toilet with a built-in trap should be selected to ensure odor prevention functionality.
  Additionally, it is recommended to use two 45-degree elbows instead of 90-degree elbows for drainage pipes to reduce water flow impact, lower the risk of blockages, and extend the lifespan of the pipes.

III. Height Adaptation and Adjustment Methods

The match between the height of the squat toilet and the sunken depth is crucial:

• Excessive height of the squat toilet: If the model height (such as 26 to 28 centimeters) exceeds the sunken depth, the installation area can be locally raised by 5 to 10 centimeters to avoid increasing costs by raising the entire floor. The raised part should be leveled with cement mortar to ensure a smooth connection with the surrounding floor.
• Insufficient height of the squat toilet: If the height is lower than the sunken depth, the drainage outlet can be cut (some models allow cutting up to 3 centimeters) or the floor can be locally raised to ensure a tight connection. Professional tools should be used during cutting to avoid damaging the structure of the squat toilet.

IV. Construction and Sealing Test Specifications

After installation, a sealing test must be conducted:

1. Fill with water to the full level and observe for 24 hours for any leakage before filling the recess and tiling.
2. If leakage is detected, recheck whether the pipe connections are loose and whether the sealing gaskets are properly installed. Replace sealing materials if necessary.
3. When filling, it is recommended to use ceramsite or lightweight aggregate to reduce the load on the sump and prevent structural cracking caused by excessive weight from the backfill material.

Applicable Scenarios: Sunken design is suitable for bathrooms on the ground floor without a basement or bathrooms with an overall sunken structure. The choice between partial or overall sinking should be based on floor conditions. Through standardized construction and detailed adjustments, reasonable installation of the toilet bowl sinking can be achieved, balancing functionality and aesthetics.