How to operate the drainage system of a natural turf field

Natural turf drainage is crucial for football fields, as it ensures that games can be played both during and after rain. To achieve this, a well-designed system is essential, combined with precise construction techniques and high-quality materials to guarantee the final outcome. The site’s drainage system includes three key components: surface slope drainage, soil bed drainage, and forced drainage. Surface slope drainage is the primary method used to manage water runoff. The general slope design of the field is illustrated in Figure 2.2.23.1. During construction, each layer of the grass bed must be carefully laid and compacted separately. Each layer should maintain the required slope, starting from the base. As shown in Figure 2.2.23.2, the rolling process must be done precisely without random compaction. A 5m x 5m grid is used to measure and control the thickness and slope of each layer.  Soil bed drainage involves water permeating through the layers of the grass bed and into the subsoil. During construction, each layer must be installed and compacted individually, avoiding mixing or trimming. It is vital to keep the materials clean, especially the gravel layer, which should not contain more than 5% mud. Additionally, blind ditches are an important part of the drainage system. Their construction requires precision; otherwise, they won’t function effectively. The ditches shouldn’t be too wide or deep. After digging, the trench should be shaped according to the longitudinal drainage slope. When placing the blind pipe, it should be straightened and properly aligned. Once laid, gravel is added around the pipe in layers to protect it from damage. Finally, a steel grate is inserted into the gravel layer and gently shaken to settle the material. Forced drainage is commonly used in areas with heavy rainfall. Unlike gravity-based drainage, this method uses buried pipes to collect water from the gravel layer and pump it out. This system is ideal for high-level football fields where rapid drainage is necessary. The installation involves embedding a filter pipe between two blind ditches, connected via threaded joints. The filter pipe extends into a sand control layer, and a variable-section three-way pipe connects it to the main line. When excavating, the tank should have a 1% gradient, and the area should be backfilled with gravel, not soil. As shown in Figures 2.2.23.3 and 2.2.23.4, this system allows for fast drainage, making it possible to play even on rainy days. However, it is more expensive and cannot fully solve drainage issues on its own. It works best when combined with the other two drainage methods for optimal performance. 

Trimmer Line

Trimmer Line,Strimmer Wire,Line Trimmer,Trimmer Head

Shaoxing Haotuo Machinery CO., LTD. , https://www.haotuochinatools.com