Renovation Plan for Mobile Toilet Renovation

The renovation plan for mobile toilet (toilet relocation) should be selected based on the bathroom's drainage method (same-floor drainage or inter-floor drainage), with the core principle being to prioritize methods with minimal alterations and low costs. For long-distance relocations, considerations such as slope, ceiling height, and neighborly relations must be weighed.

I. Renovation Plan for Same-Floor Drainage (Sunken Bathroom)

1. Directly Extend/Shorten Pipes: Due to the lower floor slab position, the internal floor can be modified to directly adjust the pipes for relocation. For example, the toilet can be moved horizontally by 50 centimeters or adjusted vertically without damaging the floor slab structure.
2. High Flexibility: The pipelines are buried within the home's sunken box, allowing for flexible routing and turns, and even relocating the toilet to the original sink position. For example, a 90-degree elbow can be used to change the pipe direction to accommodate new layout requirements.

II. Renovation Plan for Inter-Floor Drainage (Drainage Pipe Passing Through Floor Slab)

1. Toilet Relocator:
   • Suitable for small-scale, short-distance relocations (typically 10-40 centimeters, recommended not to exceed 2 meters), with minimal alterations and low costs.
   • A drainage slope of 1%-3% must be reserved; otherwise, clogging may occur. For example, when relocating by 20 centimeters, the end of the pipe must be 0.6-1.2 centimeters lower than the starting end.
   • If there is underfloor heating in the home, the height of the floor platform may affect usability, and ceiling height must be planned in advance.
2. Floor Drain to Wall Drain Conversion:
   • The toilet connects to the sewage riser, and its position can only be moved to the adjacent wall of the riser, with less likelihood of clogging after alteration.
   • A false wall must be constructed (which can be combined with niche storage), for example, embedding storage compartments within the false wall to enhance space utilization.
3. Floor Elevation Method:
   • Construct a 180-200 millimeter high base platform to embed the sewage pipe, suitable for long-distance relocations (such as exceeding 1 meter), with flexible layout but affecting aesthetics.
4. Altering Sewage Pipes Downstairs (High Risk):
   • Requires neighbor's consent to dismantle and adjust the sewage pipe position by modifying the downstairs ceiling. This operation is extremely difficult in practice and involves property regulations and neighborly relations, not recommended as the first choice.

III. General Precautions

1. Relocation Distance: The longer the distance, the higher the risk of clogging. It is recommended to prioritize short-distance relocations or wall drain methods. For example, when relocating more than 1 meter, the clogging risk of a wall drain is lower than that of a relocator.
2. Slope Design: When using a relocator or elevating the floor, ensure a drainage slope (1%-3%) to prevent clogging. For example, when relocating by 1.5 meters, the end of the pipe must be 4.5-9 centimeters lower than the starting end.
3. Old Bathrooms: If there are issues such as clogged or aged drainage pipes or incorrect original pit distances, relocating and redoing the pipe connections can solve the problem, such as replacing with PVC pipes and refixing them.

IV. Special Requirement Plans

1. Converting One Bathroom to Two: Connect a tee to the original sewage pipe to add another sewage pipe, similar to a relocation operation. It is recommended to use a wall-mounted toilet to create a height difference conducive to flushing.
2. Installing a Urinal: Urinals are small in size (20cm thick, 40cm wide) and can be installed opposite the shower or toilet, saving space and suitable for scenarios with many family members.