Preliminary acceptance criteria for composite racetracks.

Preliminary acceptance criteria for composite racetracks.

1. The color of the plastic runway is uniform and uniform, and the colors of various trace lines and point lines are uniform, clear and bright, without obvious edges. Various trace width and size is accurate. The distance between the lane lines should be exactly the same, the straight part should be straight, the curved part of the plastic runway should be smooth and unbroken.

2. The anti-slip particle size of the plastic runway shall be between 2 and 3mm, and the surface particles of the runway shall be uniform and free of bald spots. Better use of plastic runways. The surface of the runway should be clean and the seams should be smooth. There is no obvious difference. It is conducive to the performance of the athletes.

3, thickness according to the basis of plastic runway surface of the 3 m x 3 m network position, to put the grid line high plastic surface inspection, plastic surface elevation and foundation surface is the difference between the actual level of plastic runway surface layer thickness, the demand in more than 95% pass rate.

4, roughness, slope, according to the grid of 3 m x 3 m on the surface of plastic runway surface elevation measured by calculation, flatness, cross slope, longitudinal slope, high slope in more than 95% pass rate requirement.