There are two possible designs for the placement of the 3000m barrier pool: one is within the running track, and the other is outside of it. However, the most critical factor is that the pool must be located in the adjusted position of the track. Placing the obstacle pool incorrectly outside the designated area can lead to serious issues. Even a small error of just 5cm is unacceptable, as it can make the race results unreliable and cause the entire field to be deemed invalid. In such cases, the structure would have to be completely reworked. For example, at an official track and field stadium in Beijing, the referee team and coaches had to decide on a reconstruction after discovering that the obstacle pool was about 20cm off its intended position.
To ensure precision when setting up the barrier pool, there are several methods available. One commonly used approach involves using the site’s axis and applying both vertical and horizontal coordinate measurements. Additionally, the central angle method is often employed for verification. The figure below illustrates how the obstacle pool is set up based on these techniques.
Starting from the longitudinal axis of the track, we measure the straight-line distances Q1A1 and Q1B1 to locate points A1 and B1. From each of these points, we then move perpendicularly to mark A1A and B1B. By measuring equal distances from A1 and B1, we determine the positions of points C and D, which define the location of the obstacle pool. These dimensions are all based on the original design drawings. To ensure accuracy, a double-check calibration is essential. One effective way to retest is by using the central angle method. This involves placing a theodolite at point Q1, aligning the mirror with the center of the field (point O), and measuring the angles to verify the alignment. This process helps maintain the highest level of precision during setup.
Mianyang Shengshi Health Technology Co.,Ltd , https://www.shengshiaminoacid.com