
Frequently Asked Questions
The IAAF recommends an optimal curve radius of 36.50 meters, and other common radii include 36 meters and 37.898 meters.
Each lane must be 1.22±0.01 meters wide, including the 5-centimeter lane line on the right.
It is mainly divided into breathable type (EPDM particles + polyurethane), mixed type (rubber particles + polyurethane), full plastic type (pure polyurethane) and prefabricated type (rolled material).
The horizontal slope is ≤1% (8‰ for curves and 5‰ for straights), the vertical slope is ≤1‰, and the slope of the high jump area must be ≤0.4%.
Including flatness (error of 3-meter ruler ≤3mm), thickness (≥13mm), impact absorption (35%-50%) and environmental protection (VOC≤5g/L).