Comprehensive collection of essential site engineering parameters is required during the pre-construction site survey of rainbow slide projects. These data support slope design, foundation construction, safety assessment and project approval, covering three core survey categories as follows:

1. Topographic and Geotechnical Survey Data

This set forms the fundamental construction parameters for the slide. Surveyors shall obtain contour lines, natural slope gradients, effective slope lengths, full-site elevation data, slope flatness and available construction area. Meanwhile, geotechnical investigations shall be carried out to analyze soil stratification, bearing capacity, soil moisture content and foundation settlement coefficients. Any unstable zones such as loose soil or landslide-prone sections will be identified to determine whether ground reinforcement is needed for the main slide zone. Standard gradient values for the launching zone, sliding lane and buffer stop zone will also be finalized.

2. Hydrological and Local Meteorological Survey Data

For hydrology: map surface water flow paths, measure groundwater depth, calculate storm runoff volume on slopes and assess ponding risks in low-lying areas to define layout parameters for drainage pipelines. For meteorology: collect local historical maximum wind speed, extreme high and low temperatures, flood seasons and frequency of severe weather events. These figures align with the wind-resistant, anti-aging and wide-temperature tolerance standards of dedicated rainbow slide panels, eliminating operational safety hazards under harsh weather conditions.

3. Site Boundary and Surrounding Supporting Facility Survey Data

Survey tasks include defining the official red line of project land, mapping obstacles around construction and operation zones, testing load capacity of access roads, measuring width of emergency fire lanes and valid area of safety buffer zones, as well as locating water and electricity connection points and pipeline routes. Safety distances between the slide and nearby buildings or public passages must be verified to prevent cross-boundary operational risks. All survey results shall comply with international construction standards for large outdoor amusement rides, serving as technical references for dedicated construction plans and safety approval documents.