Special-Shaped Mobile Toilet Construction

The construction of special-shaped mobile toilets can refer to the general mobile toilet process and be adjusted according to the special shape. The key steps are as follows:

I. Pre-construction Preparation

1. Site Survey: Confirm the load-bearing capacity of the site, inspect for underground pipelines, high-voltage cables, and geological hazards within a 3-meter radius around the site; ensure that the preset location is no more than 15 meters from the water supply connection and no more than 20 meters from the sewage discharge connection.
2. Material Preparation: Prepare materials such as mobile toilet boxes, functional units, expansion anchors, PPR water supply pipes, UPVC sewage pipes, and waterproof sealants. Transport these materials to the site 3 days in advance and protect them properly.
3. Personnel and Permits: Assign 1 lifting worker, 2 certified plumbers and electricians, and 2 general workers, and complete safety briefings; obtain approvals for temporary site use and road occupation in advance.

II. Foundation Treatment

1. Hardened Ground: Clear debris, grind and level the ground to an error of no more than 1 centimeter per square meter, and mark the anchor bolt position lines according to the box dimensions.
2. Soft Ground:
   • Long-term Projects: Excavate a foundation pit that is 10 centimeters larger than the outer contour of the box, lay a 5-centimeter gravel bed, and then pour 15 centimeters of C20 concrete. Cure for 3 days until the strength reaches over 80%.
   • Temporary Projects: Lay a 2-centimeter anti-slip steel plate and pad it with gravel underneath to prevent settlement.

III. Box Lifting and Positioning

1. Designate a safety cordon within 5 meters of the lifting point and assign a dedicated person to guard it.
2. Use a truck crane with a capacity of at least 5 tons, lock the four lifting rings with slings, keep the box level during lifting, and slowly lower it to the preset position.
3. Measure the levelness of the four corners with a level gauge. If the error is greater than 0.5 centimeters, adjust it with thin steel plates.

IV. Special Construction Points for Special-Shaped Structures

1. Foundation Adaptation: When assembling non-standard modules, adjust the size of the foundation pit or steel plate according to the shape to ensure a complete fit with the bottom of the box.
2. Lifting Reinforcement: Add auxiliary fixing devices (such as temporary support frames) to prevent deformation or slippage during lifting.
3. Sealing Treatment: Focus on inspecting the joints of special-shaped structures and fill all gaps with waterproof sealant to prevent leakage.

V. Installation and Maintenance

1. Install the toilet away from hazardous areas and ensure good ventilation.
2. Regularly clean the sewage storage tank and empty it promptly to prevent overflow; inspect the outer shell and facilities weekly to keep the ventilation system unobstructed.

VI. Environmental Protection and Sustainable Design

1. Use biodegradation technology to treat excreta and reduce sewage discharge; or equip with solar panels and energy storage batteries to reduce dependence on external power sources.
2. Use recyclable materials such as recycled plastics and achieve component reuse through modular design.