Shapingba Mobile Toilet Construction
The construction of mobile toilets in Shapingba requires comprehensive control from planning, material selection, construction to supervision, ensuring compliance with urban public toilet standards of Class II or above, while taking into account safety, practicality, and environmental protection.
I. Project Planning and Site Selection Requirements
The construction of mobile toilets in Shapingba District focuses on areas with high pedestrian traffic, such as scenic spots and public rental housing parks. The site selection must meet three conditions:
- Pedestrian Heat Analysis: Priority is given to transportation hubs, commercial areas, or scenic spot nodes with an average daily pedestrian flow of ≥3,000 people.
- Geological Condition Assessment: Avoid areas with dense underground pipelines (≥5m from gas pipelines) and low-lying flood-prone areas (site elevation ≥0.5m above the highest water level in the past five years).
- Environmental Impact Control: Maintain a distance of ≥10m from surrounding buildings to avoid visual and olfactory interference. Site preprocessing requires graded construction based on geological type: hard ground (such as parking lots) directly fixes steel structural bases; soil sites require三七灰土 replacement (compaction coefficient ≥0.93) and laying of concrete垫层; soft soil areas add steel pipe piles (penetration depth ≥2.5m) to form a composite foundation. All sites require a 2% drainage slope and 300mm×300mm drainage ditches connected to the municipal pipe network.
II. Main Structure and Construction Techniques
- Steel Structure Framework: Adopt modular construction with main load-bearing columns of 100×100×5mm square steel and crossbeams of 80×40×3mm rectangular tubes connected by M12 high-strength bolts. Welding nodes require double-sided full welding (weld toe height ≥6mm) and ultrasonic flaw detection (Grade I qualified). Steel components must be sandblasted for rust removal (Sa2.5 grade) and then coated with epoxy zinc-rich primer (dry film thickness ≥80μm) and fluorocarbon topcoat (dry film thickness ≥60μm) to form an anti-corrosion system.
- Wall Construction: Adopt a "sandwich" composite structure with an outer layer of 0.8mm thick metal carved panels, a middle layer of 100mm thick polyurethane insulation (thermal conductivity ≤0.024W/m·K), and an inner layer of 5mm thick color steel sandwich panels. Panel seams require double sealing to prevent leakage.
III. Special Functions and Environmental Requirements
Toilets must be equipped with barrier-free toilet stalls (net width ≥1.5m), elderly assistance handrails (height 0.8-0.9m), Braille signs, and children's special toilets (seat height 0.4-0.45m). The toilet stall ratio strictly adheres to the principle of "more female than male" (1:1.5 to 1:2), and a third toilet is set up, equipped with an infant care table and safety seat. In terms of environmental protection, a standard 100L clean water tank and a 50L sewage tank are required, using a pneumatic flushing system to meet the "Environmental and Hygiene Standards for Construction Sites."
IV. Manufacturer Selection and Case Warnings
It is recommended to select manufacturers with C4-level anti-corrosion capabilities, single toilet stall weights of 150-200kg, and ease of lifting, such as Chongqing Jinmuhe Metal Products Co., Ltd. (providing micro-negative pressure pneumatic sewage systems) or Chongqing Shuda Municipal Facilities Co., Ltd. (providing full-process services). In 2024, a simple toilet in Tianxingqiao Subdistrict was demolished due to strong odors, reminding construction parties to strictly comply with environmental standards and avoid illegal construction that may lead to disputes.
