How to Handle the Floor of Mobile Toilets

The treatment of the floor of mobile toilets should be selected based on the specific fixing requirements, mainly divided into two categories: municipal rental scenarios and scenarios involving the relocation of toilet bowls in restrooms. The specific treatment methods are as follows:

I. Floor Treatment for Municipal Mobile Toilet Rentals

1. Expansion Bolt Fixing Method
   Suitable for cement or hardened floors. First, use a level to position the four corners of the toilet base, mark the drilling positions, and then use an impact drill to drill holes. Insert expansion bolts and tighten them to ensure full contact with the floor. Finally, connect the toilet base to the bolts. It is recommended to use 2-4 bolts on each side to enhance stability. This method is simple to operate but requires the floor to meet a certain hardness standard.

2. Concrete Pouring Fixing
   Suitable for long-term fixing or heavy-duty toilets. Excavate a foundation pit according to the toilet size, lay a crushed stone bedding at the bottom of the pit and compact it, set up formwork, pour concrete, and insert a steel reinforcement framework to enhance strength. After the concrete sets, connect the toilet base to the foundation. This method requires prior application for a construction permit and has a relatively long construction period, but it provides the most stable fixing effect.

3. Counterweight Block Fixing Method
   Suitable for temporary scenarios or non-hardened floors (such as grass or mud). Place pre-fabricated concrete blocks or sandbags around the bottom of the toilet. Each counterweight block is recommended to weigh no less than 50kg, and the total counterweight should be at least 1.5 times the self-weight of the toilet. Wrap the counterweight blocks with waterproof tarpaulin to prevent rain erosion. This method does not require damaging the floor but requires regular inspection of the stability of the counterweight blocks.

4. General Specifications for Floor Fixing
   Before fixing, check the floor flatness with an error not exceeding 3mm. When fixing with bolts, reserve 2-3mm of expansion space to prevent damage caused by thermal expansion and contraction. The lessor should provide a load-bearing test report to ensure that the floor bearing capacity is ≥5kN/㎡. After fixing, regularly inspect the stability of the device to prevent loosening.

II. Floor Treatment for Scenarios Involving the Relocation of Toilet Bowls in Restrooms

1. Relocation Methods

   • Using a Relocation Device: Suitable for short-distance relocation (approximately 100-300mm). Chisel out the floor slab to a depth of about 20-40mm, pre-embed the relocation device, and then connect the original toilet pipe to the new position. This method is simple to construct but has limited relocation distance.
   • Same-Floor Drainage - Floor Slab Lowering: Requires the restroom structure to already have a lowered floor design. Lower the floor slab to a height of 250-350mm and then arrange the toilet position. Lightweight bricks or blocks are recommended as backfill materials. This method has high space utilization but requires prior planning.
   • Same-Floor Drainage - Floor Slab Raising: Suitable for families without members with mobility issues. Build a base platform (height 180-200mm), pre-embed the sewage pipe, and then carry out floor construction. This method increases the floor height of the restroom but allows for flexible relocation.

2. Floor Waterproofing Treatment
   During the relocation process, ensure that the floor at the new toilet position is leveled, apply a waterproof layer with a height of about 20mm, and then lay tiles. The waterproof layer should cover at least 300mm high on the wall to prevent leakage and damage to the downstairs area.