Seek the knowledge of international standards for building basketball courts!

FIBA standard: The whole basketball court is 28m long and 15m wide. The long scale ratio is 28: 15. The lower edge of the ring is 3.05 meters above the ground.

First, the stadium: it is a rectangular three-dimensional plane with no obstacles. For the main official matches of FIBA, the measurement of the stadium should start from the inner edge of the boundary. For all other competitions, the appropriate department of FIBA has the right to approve existing courses that meet the following dimensions: the length is reduced by 4 meters and the width is reduced by 2 meters, as long as the changes are proportional to each other. The ceiling or the lowest obstacle is at least 7 meters high. The stadium lighting should be uniform and the brightness should be sufficient. The placement of lighting equipment shall not interfere with the line of sight of players. The dimensions of all newly-built venues should meet the requirements of FIBA's main official competitions: length 28m, width15m.

Second, the line: the width is 0.05m (5cm).

(1) Boundary: The boundary of the stadium should be at least 2m away from spectators, billboards or any other obstacles. The boundary of the long side of the stadium is called the sideline, and the boundary of the short side is called the end line.

(2) midline: draw a line parallel to the end line from the midpoint of the sideline, which is called the midline; The center line shall extend 0.15m (15cm) to the outside of both side lines.

(3) Free throw line, penalty area and penalty area:

1. The free throw line should be parallel to the end line, and its outer edge is 5 from the inner edge of the end line. 80 meters; The length of this line is 3.60 meters. Its midpoint must fall on the imaginary line connecting the midpoints of the two end lines.

2. The ground area formed by drawing two lines from both ends of the penalty line to the place 3 meters away from the midpoint of the end line (all measured from the outer edge) is called the restricted area. If it is colored in the restricted area, its color must be the same as that in the middle circle.

3. The penalty area is a semi-circular area with the center of the penalty line as the center and the radius of 1.80m outside the penalty area ... The semi-circle in the penalty area should be drawn as a dotted line.

4. The position areas on both sides of the penalty area are used by players when making free throws. The painting method is as follows:

(1) The first line is 1.75m from the inner edge of the end line, measured along the side lines on both sides of the restricted area.

(2) The width of the first location area is 0.85m (85cm), which is connected with the starting point of the neutral area.

(3) The width of neutral zone is 0. 40m (40cm), painted in the same color as other lines.

(4) The second position area is adjacent to the neutral area with a width of 0.85m (85cm).

(5) The third location area is adjacent to the second location area, and its width is also 0.85m (85cm).

(6) All lines used to draw these positions are 0. 10m (10cm) long, perpendicular to the outside of the restricted area.

(4) Middle circle: The middle circle should be drawn in the center of the court with a radius of 1.80m, measured from the outer edge of the circumference. If it is the color in the middle circle, it must be the same as the color in the restricted area.

(5) Three-point shooting area:

1. Draw two parallel lines at the end line 1.25m;

2. An arc (semicircle) with a radius of 6.25m (measured to the outer edge of the arc) intersects with two parallel lines;

3. The center of the arc should be at the intersection of the vertical line at the center of the opponent's basket and the ground. The distance from the center of the circle to the midpoint of the inner edge of the terminal line is1.575m.. Note: If the width of the court is less than 15m, an arc will still be drawn according to the above radius of 6.25m ..