Standard size parameters of basketball court

Basketball court standard size parameters 1 field parameters

Length: 28 meters

Width: 15m

Line width: 0.05m.

Middle circle: radius1.8m.

Three-point line: 6.75m (6.25m before opening on 20 10).

W free throw line: from the inner edge of the end line to its outermost edge, it is 5.80m long and 3.60m long.

Three-second zone: a rectangle of 4.90m× 5.80m.

Reasonable collision zone: Draw a semicircle of 1.25m from the center of the basket landing.

Basket: The diameter of the inner edge is at least 0.45m and at most 0.457m..

Basket height: 3.05m.

Height of the lower edge of the backboard from the ground: 2.90 meters

Note: The venues of FIBA, Olympic Basketball Tournament and World Basketball Championship are shared.

Site requirements

basic requirement

1. The basketball court is a rectangular solid plane with no obstacles.

2. The standard playing field is 28m long and15m wide.

3. The height of the ceiling or the lowest obstacle should be at least 7m.

4. All lines on the court must be very clear, with a line width of 0.05m.

Ground requirements

1, basketball court foundation has soil, cement, asphalt and wood, etc. When conditions permit, wooden floors are usually used. Soil, cement and asphalt sites are relatively economical and widely used at the grass-roots level, but attention should be paid to leveling the ground to prevent injury accidents.

Land surface: It is rare at present, but twenty years ago, many places with poor conditions in China often had basketball courts with such land surface. Even in some poverty-stricken areas in China, there are still basketball courts with such soil venues. Every time I see young children on the basketball court on the land, I always sigh that time flies so fast, as if I saw the indomitable me twenty years ago.

The advantage of basketball court in soil field lies in its simple construction, as long as there is flat ground. Its biggest disadvantage is that the ground is easily affected by the weather. It can't play basketball when it is trampled in potholes after rain, and it is easy to get dusty in windy weather, which leads to normal exercise.

Cement floor: Basketball courts with cement floor are still common today. In many county-level urban and rural schools, basketball courts are made of cement. I remember my basketball court was paved with cement from elementary school to high school. The advantage of the basketball court with cement floor is that it is smoother than the ground, less damaged, less affected by the weather and relatively durable. However, its disadvantage is that the ground is hard and the elasticity is not good, which is easy to make the fallen athletes suffer serious scratches or earthquake injuries during sports.

Asphalt ground: At present, many schools and basketball courts in small and medium-sized cities use asphalt ground, which looks clean and tidy, and the ground has certain elasticity, so that athletes will not be injured when they fall. However, this kind of ground can hardly be used when the temperature is high in summer, because the asphalt will be softened by the scorching sun. Basketball will stick a lot of asphalt when it is played, and people will stick some asphalt when they step on it. Therefore, many outdoor basketball courts no longer use asphalt as venues, and some of them appear in indoor basketball courts.

Wood floor: At present, in some high-grade places, such as clubs, better universities and basketball courts, wood floors are used, which makes it easier to clean the place and has better elasticity, so that athletes are not easy to get hurt during the competition. Of course, this kind of wooden floor is mostly used in indoor basketball courts, and there is no wooden floor in outdoor basketball courts. The wooden floor is too expensive, and many units don't use it because of economic conditions.

Plastic floor: Plastic basketball courts have gradually become popular in recent years and are widely loved by schools and other units. Without it, the construction is easy and pollution-free Convenient maintenance in daily use, can be used indoors and outdoors, and is not affected by the weather environment. Because of the good elasticity of plastic, athletes will not be injured because the floor is too hard during the competition. It is precisely because of these advantages that the plastic basketball court is called all-weather sports basketball court.

2. Any site requires smooth ground, no bumps, no pebbles, daily maintenance and clear line drawing.

3. As people's requirements for sports venues are getting higher and higher, the choice of venues has also become diversified. Common ground planes are:

Acrylic plastic surface layer

This is a new profile made by grinding with scraper on asphalt concrete or steel plate concrete structure, which is used for on-site pouring and laying. Its technology is mainly divided into leveling adhesive layer, strengthening layer, wear-resistant layer and other multi-layer methods, as well as multi-layer methods containing colloidal particles. The advantages of this surface material and technology are high flatness, high surface hardness, wear resistance, sun resistance, bright color, long service life and easy management and maintenance. This kind of basketball court with stable surface material can make players run comfortably on the court, and it is a high-grade basketball court that can be used for entertainment and regular competition.

Silicone-acrylic plastic surface layer

It is newly developed on the basis of acrylic acid and silicon pu, which is the same as acrylic plastic surface layer.

Quality requirements of plastic surface layer of asphalt concrete cushion

Natural plain soil layer: the compaction density is more than 90%, and the water content is 8- 12%. After removing turf and humus soil, use a roller of about 12 ton to roll it longitudinally from both sides to the middle for 5-8 times.

Gravel cushion: the thickness is about 200mm (particle size is 30-50mm), and it will be rolled by a roller of 12 tons or more until the gravel is not loose, the surface is free of ripples, and the compaction density reaches 2.2 tons /m3. The allowable deviation of thickness is 8%, but it shall not be greater than 20mm ... The width shall not be less than the design width.

Asphalt concrete layer: First lay a coarse asphalt layer with a thickness of 50mm and a maximum aggregate of ≤35mm, and then lay a fine asphalt layer with a thickness of 30mm and a maximum aggregate of ≤ 12mm, and roll it with a roller of 12 ton.

Precautions:

(1) The asphalt paving temperature should be above 100℃ and the survival temperature should be above 60℃.

(2) The roller of the roller shall be wiped with clear water, and shall not be washed with diesel oil or other heavy oil to ensure the adhesion of asphalt layer and plastic.

quality requirements

There shall be no cracks, obvious wheel tracks, oil stains, unmixed asphalt blocks, induration, depression, cracking, honeycomb or peeling on the foundation surface.

There is no water on the surface.

Smoothness: the allowable error of 3m straightedge is within 3mm.

Slope: in line with the movement process index.

Compressive strength: R20 > 25kg/cm2 R50 >; 10 kg/cm2

Compactness: the surface compactness is above 97%, and the dry bulk density is above 2.35 kg/L. ..

Softening point of asphalt >; 50℃, elongation 60cm, penetration 5 s (110 mm) > 60 cm.

Thermal stability coefficient of asphalt: Kt=R20/R50≤3.5.

Body inflation rate: less than 1%.

Water absorption: 6- 10%.

Maintenance period: outdoor temperature above 25℃ for 24 days. Outdoor temperature 15-25℃ for 30 days. The outdoor temperature is lower than 15℃ for 60 consecutive days.

Lighting requirements

Lighting the competition venue shall be at least 1500 lux, measured from the stadium 1 meter. Lighting should meet the requirements of TV broadcast.

Standard size parameters of basketball court Chapter II Site size: 1. According to international standards, a standard basketball court is 28m long and15m wide. In addition, where the basketball stand is placed, the length of the court needs to be about 34 meters, which can be appropriately adjusted according to the size of its own court to keep the size in direct proportion.

The lower edge of the backboard is 2.9 meters from the ground and the basket is 3.05 meters from the ground.

Rack placement: the base of the rack is generally 2m× 1m, and the length of the probe arm is between1.8m-2.25m. According to the requirements, the probe arm needs to extend into the site 1.2m, and the general site boundary line is 5cm. If the probe arm is calculated as 1.8m, the ball rack should be placed 55cm away from the ground wire of the site.

Safety: Two parts of the rack are prone to accidents. First, the supporting feet of the base are generally cast iron, but they are easy to corrode. All the good ones are cast steel, which greatly improves the durability and safety.

Second, the basket, the bad basket will lose its elasticity after being used for a long time, and will fall off because of the thin material for a long time. Many of them are cast steel, and reinforced springs are used, which is very safe.

Standard size parameters of basketball court 3 I. Stadium:

It is a cuboid plane without 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 4m and the width is reduced by 2m, as long as the changes are proportional to each other. The height of ceiling or minimum obstacle shall be at least 7m. 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 new venues should meet the requirements of the main official FIBA competitions: length 28m, width15m.

Second, the line:

The width is 0.05m (5cm).

(1) Boundary: The boundary of the stadium is 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 the two side lines.

Three, the penalty line, penalty area and penalty area:

1, the free throw line should be parallel to the end line, and its outer edge is 5.80m away from the inner edge of the end line. The length of this line is 3.60m.. 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 the penalty area plus a semicircle area with the penalty line as the center and a radius of 1.80m outside the penalty area. The semicircle in the restricted area should be drawn as a dotted line.

Four, the' position area' on both sides of the penalty area for players to use 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.

Fifth, the 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 circle. If it is the color in the middle circle, it must be the same as the color in the restricted area.

Six-point or three-point shooting area:

Distance from the sideline 1 and 1.25m respectively, and two parallel lines are drawn from the end line;

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, the arc shall be drawn according to the above radius of 6.25m.

Standard size parameters of basketball court Chapter 4 Site parameters

Stadium size: 28m long and15m wide. (NBA: 28.65m long and15.24m wide)

Line width: 0.05m (5cm)

Middle circle (bouncing circle): a circle with a radius of1.8m.

Three-point line: the radius is 6.75 meters, and the distance from the sideline should not be less than 0.9 meters (NBA:7.25 meters).

Free throw line: The free throw line is 5.8m away from the baseline, with the center point facing the basket and 3.60m long.

Three-second zone: 4.90m× 5.80m rectangle

Reasonable collision zone: Draw a semicircle of 1.25m from the center of the basket landing.

Basket: It is made of solid iron bars with a diameter of 2 cm, and the diameter of the inner edge is at least 0.45 m and not more than 0.457 m. ..

Basket height: 3.05m.

Height of the lower edge of the backboard from the ground: 2.90 meters

Site requirements

The ceiling or the lowest obstacle shall not be less than 7m.

The boundary of the stadium is at least 2 meters away from billboards, spectators or any other obstacles.

The lighting of the basketball court should be bright enough to meet the lighting standards of the basketball court.

Website terminology

Side and end lines

The long boundary of basketball court is called sideline, and the short boundary is called end line.

median

There is a line parallel to the end line at 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.

interlayer

Draw a circle with the midpoint of the center line as the center and 1.8m as the radius, which is called the middle circle.

Three-point shooting area

It is the ground area defined by two arches on the court.

forbidden zone

The marked ground area on the playing field is defined by the end line, the penalty line and two lines starting from the end line (the outer edge of the drawn line is 3 meters away from the midpoint of the end line) and ending at the outer edge of the penalty line. Except for the terminal lines, these lines are all part of the restricted area. The inside of the restricted area can be painted, but it must be the same as the color of the middle circle.

Free throw line

The free throw line should be parallel to each end line. From the inner edge of the terminal line to its outermost edge, it should be 5.80 meters, and its length is 3.60 meters ... Its midpoint should fall on the imaginary line connecting the midpoints of the two terminal lines.

Team seating area

The seating area of the team should be marked on the record sheet, off the court on the same side as the team. Each area is defined by a line extending at least 2 meters from the end line and another line extending 5 meters from the center line and at right angles to the side line and at least 2 meters long. The team seating area must have 14 seats for coaches and substitutes. Any other personnel should be at least 2 meters behind the team seat.

Reasonable collision zone

Draw a semicircle of 1.25m from the center where the iron ring touches the ground, which is called a reasonable collision avoidance zone.

Basketball court standard size parameter 5 1. stadium

For the basketball court, it is generally a rectangular plane without obstacles. The length of the whole basketball court is generally 28 meters, the width is 15 meters, the aspect ratio is 28: 15, and the distance from the basket to the ground is 3.05 meters. In addition, it should be noted that the lighting of the stadium must be uniform and the luminosity must be sufficient. Lighting equipment cannot affect the eyesight of basketball players. Only in this way can athletes give full play to their abilities.

2. Line

The width of the line is generally 5 cm.

(1) Boundary: The indispensable line of the basketball court is the boundary, which is the sideline of the court. It is generally more than 2 meters away from the audience, billboards and other obstacles.

(2) midline: there is a line parallel to the boundary in the middle of the boundary, which is the midline. Its width is generally 0.15m, and the distance is relatively close.

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

The free-throw line should be horizontal to the outside of the sideline, with a distance of 5.8 meters from the outside. The length of the free-throw line is generally 3.6 meters, and the middle point usually falls on the sideline. The penalty area is two lines drawn from both ends of the penalty line, usually 3 meters. The restricted area is the restricted area plus a circle drawn with a free throw line.

(4) Three-point shooting area

First, there are two parallel lines at a distance of 1.25m from the boundary line. Then an arc with a radius of 6.25 intersects with Ah. At the same time, the center of this arc must be aligned with the vertical straight line of the basketball center. The distance from the center of the circle to the center is generally 1.575 meters.

After reading this article, I believe everyone must have a deeper understanding of the standards of basketball courts. Although we may not notice it when we play basketball, it is actually very important. If the basketball court does not have such a standard size, then the real basketball game will not be fair. This is also very bad for players. Therefore, the standard of basketball court is to make people think as fairly as possible in the game.