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How high is basketball hoop from the ground
How Tall is a Basketball Hoop - Has it Ever Changed in Height?
Ever wonder what the height of a basketball hoop is when watching a game? A lot has changed over the years in professional basketball from the concept of dribbling, the three-point line, the basket itself, and even the backboard material, but one thing remains consistent: how tall an NBA basketball hoop is. A professional basketball hoop is always teen feet high from the floor to the top of the rim.
So why is the basketball hoop height ten feet high off the ground? Is the size of the hoop the same across the WNBA, FIBA, NCAA, High School, and more? Here is the complete breakdown of the height of a regulation basketball hoop!
Why is a Basketball Hoop Ten Feet Off the Ground?
James Naismith was the inventor of the game of basketball in 1891 out in Springfield, Massachusetts. During that year, he hung peach baskets off the running track guard railings at the YMCA, ten feet off the ground, for players to shoot at.![]()
After every basket made by a player, the game would pause to get a ladder to retrieve the ball, which was a soccer ball, at that time.
Eventually, iron hoops and a net replaced the peach baskets, which removed a ladder to retrieve a ball during a game.
How Do you Measure the Ten Feet for a Hoop?
The ten-foot measurement for a basketball hoop is from the height of the rim to the floor. The teen feet measurements are not from the bottom of the net, which fans might not know. The height takes the top of the rim since that is how high the ball needs to be to go into the hoop.
How Tall is a Basketball Hoop in the NBA?
A professional NBA hoop is ten feet from the top of the rim to the bottom of the floor. However, while the hoop’s 10 feet is the same, the average height of basketball players continues to grow over the years, which is why dunking is more common in today’s game. According to The Hoops Geek, players from the 2021 – 2022 season were 6’6″ tall on average.
Back in 1952, the average height of a player was 6’4″ tall.
How Tall is a Basketball Hoop in the WNBA?
A WNBA hoop stands at ten feet tall from the top of the rim to the base of the floor. According to TFI Global News, the average height of a female basketball player is 5’11”. Comparing that to the NBA, which is seven inches taller on average, you can understand why dunking is less common in the WNBA.
How Tall is a Basketball Hoop in FIBA?
The basketball hoop for the Olympics and all professional leagues worldwide stands at ten feet tall.
How Tall is a Basketball Hoop in NCAA Basketball Games?
NCAA basketball (men’s and women’s) is ten feet from the top of the rim to the base of the floor.
How Tall is a Basketball Hoop in High School and Middle School?
Basketball hoops in High School and Middle School leagues are ten feet from the base of the floor to the top of the rim.
Does the Rim Height Change in Youth Basketball Leagues?
Youth basketball leagues have different heights for the rim on basketball courts.
Kindergarten leagues will have hoops being seven feet tall. Meanwhile, fifth graders will have the hoop at nine feet tall. It is not until you get to sixth grade that the hoop goes to standard ten feet height.
How Big is the Basketball Backboard?
A regulation-size basketball backboard is 6 feet wide by 3.5 feet tall.
How Big is the Basketball Rim?
A regulation-size basketball rim is 46 inches in diameter.
Did the Hoop Size Ever Change in the NBA?
In 1954, the NBA ran a test raising the basketball hoop to 12 feet for one game. The reason to have 12-foot rims was to stop George Mikan from dominating the game since he was close to seven feet tall. The game that had the test was between the Milwaukee Hawks and the Minneapolis Lakers.
However, that test only lasted one game. The trial concluded that while it did stop George Mikan from dominating, it didn’t produce good results for the game. The hoop being taller made the game even more dominating for taller players to gather rebounds against shorter basketball players.
Why Do Basketball Hoops Have a Net?
Basketball first began with peach baskets that players would try to get the ball into when they would shoot. An iron hoop replaced that peach basket as the years went by, which allowed the ball to go through on a successful shot. No longer was a ladder necessary to retrieve balls after a successful shot.
Why Do Basketball Hoops Have an Orange Rim?
During games, the orange rim stands out for fans, coaches, refs, and players to see. The orange paint also helps spot goaltending violations if a player swats the basketball away as it is coming down towards the basket.
Can Players Change the Hoop Regulation Height During a Dunk Competition?
NBA players who partake in the dunk competition always like to put on a show for the fans. In 2009, Dwight Howard did just that by bringing in a basketball hoop that was 12 feet in height. He came out with a superman cape and was able to perform the dunk to the delight of the fans at the All-Star Game event.
Conclusion: How Tall is a Basketball Hoop?
In summary, a basketball hoop across professional leagues is ten from the top of the rim to the bottom of the floor. The ten-foot height dates back to 1891 when the basketball game took place in a YMCA in Springfield, Massachusetts. During that time, peach baskets were on the railings of the track, and players would shoot a ball into the basket to score points. While many elements of basketball have changed over the years, the height of a basketball has not.
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Basketball Rim Height
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Basketball rims are 10 feet or 3 meters tall for high schools and pro leagues like the NBA.
For youth leagues, the hoop can be shorter than 10 feet. This is the standard for all playing levels from high school and up. Younger ages play with shorter rims to enable the players to reach the rim with their shots.
The height of the rim is 10 feet because most professional players are 6 feet or taller. The rim serves as the perfect height to be challenging enough for all players.
Table of Contents
- Original Rim Height
- College Basketball Rim Height
- Youth Basketball Rim Height
- G-League Rim Height
- Backboard Height
- Net Height
- FAQ
Original Rim Height
Ever since the creation of the sport in 1891 by Dr. James Naismith (the sport was originally called “basket ball”), the height of the rim for professional leagues has always been 10 feet high. That is no different from the NBA, which from its first season to the present day, has maintained a 10-foot rim.
College Basketball Rim Height
The regulation distance for both Men's and Women’s Division I in the NCAA is the same exact height as an NBA rim, which is 10 feet.
Youth Basketball Rim Height
In youth basketball, some players play with rims located closer to the floor on account of their smaller height. For example, third and fourth-grade players shoot on eight-foot rims, and fifth-grade players shoot on nine-foot rims. Sixth-grade players and above shoot on 10-foot rims, the same as high school, college, and pro players.
G-League Rim Height
The height of an international-sized rim is the same as college and the NBA, 10 feet off the ground. In the Gatorade League or G-League (previously called the D-League), the rim measurement is exactly the same as the international, college, and the NBA, 10 feet from the floor to the rim.
Backboard Height
The backboard is behind the rim and connects the whole apparatus to the ground with a vertical support system, while the net is attached to and hangs below the rim. The backboard extends upwards to about 13 feet off the ground.
Net Height
The net hangs about a foot and a half below the rim (8.
5 feet off the ground).
FAQ
How high is the rim in basketball?
Basketball rims are generally 10 feet high. In the NBA, NCAA, and high school basketball hoops are 10 feet or 3 meters tall, but for youth leagues, the hoop can be shorter than 10 feet.
Why is the rim 10 feet high in basketball?
Basketball rims have been ten feet high since the creation of basketball, which was invented by Dr. James Naismith in 1891. The reason for this consistent height is because when Naismith originally created his basketball hoops, he hung peach baskets from the side of a running track railing, which happened to be ten feet in height. When basketball’s popularity increased, and basketball hoops began to be standardized as hoops mounted on a pole with a backboard, the height remained the same as Naismith’s original baskets. The height was kept because it was considered an ideal height for the game, not too hard to reach by leaping or shooting, but also not low enough to make scoring points too easy.
Are basketball rims lower in the WNBA?
Basketball rims are not lower in the WNBA; they are the standard height of 10 feet, which is the same as in the NBA and NCAA. In WNBA basketball, the court dimensions and the size and height of the rims are the same as in the NBA. However, the three-point line is closer in the WNBA. The NBA uses a 22-foot, 9-inch line that shrinks to 22 feet, 3 inches in the corners, whereas the WNBA uses a three-point line that is 20 feet, 6 inches from the rim throughout its curvature.
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Height to hoop in basketball. Standard height and size of basketball hoop
Basketball is played by at both professional and amateur levels.
Official tournaments are subject to strict regulations set by sports organizations such as FIBA and NBA.
And if on the yard basketball field and on the lawn near the house you can use a backboard and a ring of any size, then for professional games the parameters of these basketball attributes must comply with strict standards.
International Basketball Federation size standards
International Basketball Federation (FIBA) is the founder of all international competitions , including the World Basketball Championship. According to the FIBA regulations, shields, baskets are made, markings are applied to the playing fields for almost all professional tournaments.
Photo 1. Diagram of a standard basketball backboard showing the correct dimensions of its backboard and ring.
Basketball screen is a structure consisting of a padded support, a rectangular sheet (of the shield itself), as well as metal rim with mesh (baskets), which is attached to this canvas.
The cloth is made of durable materials. It is either tempered safety glass or hardwood . Size 1.8 x 1.05 m . Horizontal deviations are allowed no more than at 3 cm , vertical - at 2 cm . The lower shield line is located at a height of 2.9 m above ground level.
Features of standard hoop
As for the basketball hoop, it is made of strong steel. Rim, thickness 16-20 mm is dyed orange and has an internal diameter of from 45 to 45.9 cm.
A mesh is attached to ring in 12 places. Attachment points must be free of sharp edges, dents, crevices and chips that could injure the fingers of basketball players.
The hoop is attached to the backboard in such a way that the pressure exerted on the hoop is not transmitted to the screen. Therefore, the contact between the ring and the shield is excluded.
The top edge of the steel rim is strictly horizontal at a height of 3.
05 m above ground level. A tolerance of max. 6 mm is allowed.
Important! There are two types rings: regular fixed and with cushioning , that is, capable of deviating a certain distance, and then returning to their place. A ring with cushioning must pass the durability test. If the hoop withstands a static load of 82-105 kg , it is usable.
The net attached to the rim is made of white cord and is 40-45 cm long. The top of the mesh is stiffer than the bottom. Thanks to this, mesh does not overlap on the ring is not tangled and the ball is unlikely to get stuck in it.
National Basketball Association Rules
NBA and FIBA Standards for Basketball Backboard and Hoop are nearly identical . The differences are as follows: distance from the bottom edge of the screen to the floor 2.75 m and the basket is attached at a distance of 0.31 m above the lower edge of the shield.
Basketball backboard markings
Screen markings applied white or black paint . White - used when the shield is transparent, black - if the surface is painted in a light color. Line width - not less than 50 mm.
Horizontally and vertically draw bounding bars , which, when connected, form a rectangle. Size 59 x 45 cm. Horizontal deviations are allowed no more than 20 mm , vertical - at 8 mm .
According to the rules, the upper edge of the base of the rectangle must be flush with the ring and 148-150 mm above the bottom edge shields.
Panel requirements
The following standards must be observed:
- Size 1.8 x 1.05 m.
- Strong material (solid safety glass or hardwood).
- Surface, non-reflective.
- Marking clear, at least 50 mm wide.
- Good fixation on a support.
In general, when choosing a basketball backboard , it is necessary to focus on needs teams or individual athletes.
It all depends on what games this shield will be used for : Outdoor or outdoor family entertainment, mini-basketball or adult professional tournaments.
Attention! The main thing to consider is structural strength , because some players hang on the ring during the throw. A badly installed support or incorrectly fixed backboard and basket can cause serious harm to the health of a basketball player.
Helpful video
Watch a video showing how to assemble a professional-looking basketball backboard.
Although basketball is a popular game, there is not always access to a real playground. But this is not necessary if you just want to throw the ball into the basket. Now it is possible to purchase ready-made equipment even for placement in an apartment or office. The size of the basketball hoop, although it has standard values, is only for official competitions.
In everyday life, everyone can choose the size of the basket and the ball at will.
The history of basketball
Experts believe that this is perhaps the only game about which it is known for certain who invented it and when. It happened in 1891 in Springfield, USA. Dr. D. Naismith, a teacher at the Christian Youth Association's Learning Center, decided to come up with an outdoor indoor team ball game to replace American football. According to another version, he wanted to revive gymnastics in this way.
One way or another, they were offered rules according to which the players of the two teams had to throw the ball into baskets suspended at a height. Each team had its own zone and basket. In the hall, D. Naismith simply hung them on the balconies. The players had to hit the opponent's basket with the ball and protect their own from their hits. Whoever hits the target more times in the allotted time wins. There were rules for dribbling, penalties for violating the rules were stipulated.
In those days, the size of the basketball hoop was not strictly regulated. Fruit baskets were used for these purposes. And the balls were then far from ideal shape. In order not to get them every time, they took out the bottom of the baskets.
Development of the game
Trial competitions showed that the rules needed to be changed. The spectators on the balconies, where the baskets hung, prevented the ball from getting inside. So the shields were born. Initially, they served as protection from the fans, but already the first games showed that it was even more interesting that way. The ball could hit the ring after a successful rebound from the shield. This added spice to the game and made it possible for teams to change tactics.
The size and height of the basketball hoop did not change significantly over time. At 1893 year wicker baskets for fruit ceased to be used in tournaments. To replace them, rings made of a metal rod were invented. A net was attached to it so that there would be no disputes about a successful hit.
With it, it was better to see when the ball hit the target. In 1894, unified rules for basketball were proposed. The game was liked and quickly spread to Japan and China, South America and Europe. Basketball first appeared in Russia in 1906. In the twenties of the last century, it began to be introduced as a discipline in military and sports schools.
Professionals and amateurs
For an athlete who has linked his career with the game, it matters what size basketball hoop is used in training. The skills of determining the position for the throw, its strength, trajectory have been practiced for years. In the US, where basketball quickly moved from amateur to professional, good players became highly valued. The cost of individual contracts reached one dollar per minute of play. At that time, it was very good earnings. They encouraged the players to train hard to show good ball control on the court and high performance in shots on the basket.
The difference in the level of professional basketball players in the US and other countries where the game is not so popular was felt.
For a long time, the Olympic Committee banned players from the NBA from participating in their tournaments. And when this restriction was lifted, the US team confidently defeated the best team from Croatia at that time. However, the professionals were still put to shame, because they were so sure of their advantage that they promised to win by 50 points. That final match of the Olympic Games ended with a score of 117:85. The victory of the professionals was obvious, but the "amateurs" gave a serious rebuff and managed to lose only 32 points.
Basketball hoop: dimensions, diameter
Back in 1893, when thoughtful rules of the game were proposed, it was decided to standardize the inventory according to uniform standards. Then the rings began to be made of metal, equipped with a mesh, securely and securely fastened to the shield and supporting structures at a certain height from the site. What are these standards?
Today, the playground should have dimensions of 28 × 15 m.
The height of the enclosed space (ceiling) is at least 7 meters. The shield (bottom edge) is attached at a height of 290 cm from the floor. It has dimensions of 180x105 cm. The basket (a metal ring with a mesh) is attached to the shield at a height of 305 cm (respectively, 15 cm above the lower edge of the shield). The diameter of the ring should be within 45-45.7 cm. For its manufacture, a steel bar 16-20 mm in diameter is used. FIBA controls and approves playground equipment and inventory. Balls for official competitions are made of leather. Air pressure should ensure that the ball bounces to a height of 1.2-1.4 m after it falls from a height of 1.8 m.
Net
Any sports equipment must be injury-proof. The verified size of the basketball hoop also provides for the use of a standard size net with it and an acceptable configuration. It should be fastened in such a way as to minimize the possibility of pinching fingers during the game.
Net length standard is 40-45 cm.
12 loops are offered for attaching to the metal bar of the basket. For the manufacture of the mesh, a white cord of a certain stiffness is used. The weave configuration does not allow its edges to roll over during ring play or entanglement. The ball cannot get stuck and at the same time must pass with some delay, making it possible to capture the moment it hit the basket.
Design Features
It is not enough to use only a standard size basketball hoop for training. The height of its placement above the ground is no less important. The dimensions of the shield and the applied boundary lines (5 cm - width) marking the quadrangle (45 cm by 59 cm) behind the basket are also important. The material for the shields is often polycarbonate or tempered glass. Its surface should be smooth and even.
The shield is rigidly attached to the supporting base, with the plane perpendicular to the floor. The structure must not move during the game during throws and contacts.
The lower edge and ends of the shield plane to a height of 35 cm, as well as all supporting structures, are upholstered with soft material, which excludes injury. In general-purpose sports halls, mobile racks with a basket are now increasingly used. They can be quickly installed and dismantled if necessary. In basketball halls, backboards are attached to the ceiling or walls. They can also be hung on special stretch marks.
The basket can be attached rigidly or with a shock absorber. In this case, the plane of the ring should not bend more than 30 degrees and immediately return to its original position. Regardless of the method of fastening, the design must absorb 35-50% of the load of the player's weight on contact.
Do-it-yourself basketball hoop: dimensions
Playgrounds for training athletes and competitions are equipped by the relevant organizations according to existing standards. To be able to practice at home, you can purchase a separate board with a basket and hang it in a suitable place or install a ready-made and fully equipped rack.
But you can do everything yourself.
If there are plans to engage in this sport in the future, then when making the backboard, it is desirable to maintain the standard size of a basketball hoop. It will be problematic to bend and weld a steel bar with a diameter of 16 mm without suitable equipment and locksmith skills. But you can adapt an old aluminum hoop for rotation for these purposes. It is cut, bent to the desired diameter and secured with an outer insert.
The shield can be cut from a piece of chipboard, fiberboard of a suitable size or knocked down from boards. It is best to attach the basket to it on the bracket. It can be picked up at a hardware store. It is worth thinking about additional spacers on the sides of the ring, since fixing at one point is not enough and upon contact with the ball, the basket will inevitably sag more and more.
You can make a net using 24 pieces of rope. Their length is chosen 2-2.5 times longer than the diameter of the ring.
The edges are knitted to the hoop through equal segments. Then the ropes are tied in pairs in the middle. In the next step, the process is repeated with free edges. And so again. The result is a tapered mesh. The inventory, of course, will be far from standards and perfection, but it should be enough for training at home with the ball.
Basketball basket ring must have the following design: minimum inner diameter is 45 cm and maximum 45.7 cm. The ring is painted bright orange.
The ring is made of durable metal with a diameter of at least 16 mm, the maximum diameter of the bar can be no more than 20 mm. On the bottom of the ring there must be a device for installing nets, such that would not allow injury to the fingers.
Net holders must be secure, free of sharp edges and crevices to prevent players' fingers from getting caught in them.
The ring is attached to the shield structure in such a way that no forces applied to the ring are in any way transferred directly to the shield.
Therefore, there must be no direct contact between the ring, the device that secures the ring to the shield, and the shield itself. However, the gap must be such that fingers cannot get there.
The upper plane of the ring is located in a horizontal plane at a height of 3.05 m from the level of the playing court, at an equal distance from the vertical edges of the backboard, and the nearest point of the inside of the ring must be at a distance of 15 cm from the front surface of the backboard.
The fastening systems of any ring must compensate for 35-50% of the energy that is applied to the ring. The difference between the rings installed on the same platform in this parameter should not exceed 5%.
It is allowed to install rings with a shock absorber. At the same time, they must meet the following requirements - the rebound characteristic of the ball must be similar to the characteristic of the ring without a shock absorber. The shock absorber must fully provide this characteristic and at the same time protect the ring and shield.
The design of the ring and its fastening system must ensure the safety of the players. For rings with a “locking system”, the shock absorber must not disconnect the fastening system from the ring under a static load in the range of 82-105 kg, which can be applied to the upper edge of the ring at the farthest point from the backboard. The ring must not deviate downwards more than 30 degrees from the initial position when the mechanism is triggered due to the loads applied to it. The ring should instantly return to its original position as soon as the impact on it has ceased.
Nets for rings are made according to the following parameters: the net must have 12 fastening loops. The net must be at least 40 cm long and not more than 45 cm long. The upper part of the net must be such as to avoid possible throwing into the ring, possible entanglement, throwing the ball out of the basket, getting the ball stuck in the net. For their manufacture, only a rigid white cord is used.
The popularity of a healthy lifestyle in our country is gaining momentum from year to year. One cannot but rejoice at the fact that many have "turned their faces" to the problem of physical inactivity, excess weight, unhealthy habits, etc. People are becoming more and more interested in various sports, and simply in physical activity. This applies to both adults and children, adolescents, and youth.
Team sports are especially popular with both amateur athletes and fans. And although football in our country has always been out of competition, other ball games also have many ardent supporters. And one of them is basketball.
What do we know about basketball?
Everyone knows that basketball is a ball sport with two teams of five people each, the goal of which is to throw as many balls as possible into the opponent's ring and fight against similar actions on his part.
But how many have thought about the fact that, like every game, basketball has its own specific rules regarding the composition of players, the size of the court, equipment and other nuances, expressed in numerical form.
For example, do you know the standard size for a basketball hoop and backboard?
Meanwhile, this information is rather curious. For example, knowing the size of a basketball backboard, you can easily mount a homemade playground in your own yard and arrange amateur competitions.
Basic Rules
The organizers of the yard basketball team should be aware that it can consist of 5 people who are simultaneously on the playing field. Another 7 people have the right to wait their turn in the reserve, and there are no restrictions on the number of replacements.
Two points are provided by the rules of the game for throwing a basketball into the basket from a short distance and three points from a position located at a long distance, this place is marked with a semicircle.
Basketball backboard dimensions and other nuances
Let's take a closer look at the backboard itself. They make it from a material such as tempered glass, which has a thickness of 20 millimeters.
The standard dimensions of a basketball backboard look like this: length - 180 cm, deviation is allowed no more than 3 centimeters. In height - 105 cm with a deviation, respectively, within 2 centimeters. Its side ribs, like the lower one, are provided with shock-absorbing upholstery to avoid accidents.
The FIBA protocol regulates the equipment of basketball backboards with lighting having a red color, which is applied from the inside around the perimeter. The shield is installed strictly at a certain height. The distance from the bottom edge to the floor is 275 centimeters. The height at which the basketball hoop is attached is 305 centimeters.
Other sizes
But it's not just the size of the backboard that matters. Other numbers regarding equipment for this sport are:
- Backboards may protrude beyond the playing area 1.2 meters from the end line.
- Any basketball hoop must have an inner diameter of 45 cm and a thickness of 2 cm.
The rope net underneath is arranged in the form of a basket without a bottom, the length of which is 40 cm. a rectangle measuring 59 x 45 cm is surrounded by a white stripe five centimeters wide.
Backboards and stands used for basketball games, complete with rings and baskets, can be of two types and, accordingly, sizes - for adults and for children. Sizes of equipment for adults are contained in the official FIBA rules. Children's parameters correspond to equipment for mini-basketball, which has a different size of the basketball hoop and backboard.
As a rule, if the game is played in a sports hall, the backboards are mounted to the wall or ceiling, lowered on special devices. Now in the halls, mobile racks and basketball backboards that can be moved around have begun to be used everywhere. On the street, both stationary and home-made shields are also possible, which are made of plexiglass or metal with polycarbonate.
Children's basketball backboard size
Let's move on to children's basketball.
What are the dimensions of the basketball backboard in this case? His drawing looks like a rectangle, having 120 cm in height and 90 cm in width. The material is polycarbonate. Such a mini-backboard should protrude 60 cm above the basketball court from the field marking line. Mount it, raising it to a level of 230 cm above the floor or platform. The ring is fixed 30 cm above its lower edge. And although the dimensions of the basketball backboard for children differ from the standard ones, its markings and the size of the basket for the ball are similar to the adult version.
Choosing the right equipment for an outdoor basketball court and installing it securely is a very important task for players. Compliance with all accepted standards will ensure strict adherence to the rules, the certainty of victory and the pleasure of a real game.
How to equip a basketball court in the yard
Although this game is not as popular in our country as, say, in the USA, the ranks of its fans are constantly growing.
This is a great option for spending time outdoors with a child, especially for supporters of a healthy lifestyle.
Almost all parents can make basketball equipment, and it can be installed almost anywhere. Let's look at what it takes to set up a homemade basketball court in your own yard. To work, it is enough to know the dimensions of the basketball backboard, the drawing of which is quite simple.
So, we should get a sheet of chipboard or plywood, a metal tube or rod, a mesh and a metal corner. If a solid sheet of plywood or chipboard could not be found, the shield can be knocked down from separate planks.
What dimensions can a homemade shield have?
For backyard basketball it is not necessary to follow the standard parameters. It is not so important what size of the basketball backboard you will have, the main thing is that a square for throwing the ball can fit in its field, which, as mentioned above, is 45 x 59 centimeters in size. The ring itself with a diameter of 45 cm is easy to bend from a tube or rod.
It is attached to a metal corner with bolts or welding. The dimensions of the mounts themselves are not so important, only a 15-centimeter distance between the ring and the shield should be observed.
The net on the hoop is needed to keep track of ball hits. In case of its absence, you can take a mesh string bag without a bottom. A self-made shield is mounted on any pole, both wooden and metal. If there are none in your yard, and for some reason it is not possible to bring and dig it yourself, the shield can be mounted directly on the wall of a house or any building.
When you make a basketball backboard with your own hands, its dimensions and the level of fastening may not be so strictly observed. It is only important to maintain the required height of the lower edge. But the standard distance of 275 cm can be reduced if young children are expected to participate. Indeed, it is much more difficult for them to throw the ball to a great height, and interest from a useful and gambling game will be quickly lost.
Play for your health!
As you can see, it is not difficult at all to equip your child and his friends with a home-made basketball court without leaving your home yard. To do this, it is enough to unite two or three participants (as a rule, dads of future players), "organize" simple materials at hand and spend an evening or two on the installation of equipment.
Meanwhile, playing basketball can not only give a lot of joy to young participants, but also to a large extent improve their health, which is especially important in our time prone to physical inactivity. And parents can take an example from young players, and a wonderful habit of a healthy lifestyle will take root in families and become a good tradition.
Besides, who knows, maybe the real stars of domestic and world basketball will turn out from among the current amateur debutants in the future!
The basketball hoop is at a height of 3 meters 5 centimeters, but this is provided that the gym is normal.
At our school, the gym was on the first floor, and the ceilings at the school were not high, so the ring hung at a height of only 2 meters. It was very easy to throw the ball into it.
Basketball is generally a folk game, so the requirements for equipment are different.
Equipment for amateur basketball : there are no standards and rules here, everything is aimed at convenience in transporting and installing equipment.
Maybe so
Equipment for grassroots basketball : no fantasy, everything strictly complies with the Rules:
Mounting height for the upper edge of the basketball hoop 3 meters 5 centimeters. There may be a tolerance of up to 6 cm. It is clearly visible in this diagram. Other important dimensions for the location of the basketball hoop are also indicated.
The basketball hoop (basket) is mounted on a basketball backboard, the lower edge of which is at a height of 2.75-2.9 meters. And the basketball basket itself is standardly located at a height of 3 meters 5 centimeters from the floor or, if measured in pounds, then at a height of 10 pounds.
An interesting question, I sometimes thought about this question myself, especially when, switching channels, I got to basketball. It turns out that the basketball hoop is located at a distance of 3 meters and 5 cm from the ground.
The basket is at a height of 10 feet, in terms of dimensional standards closer to us - 3.05 meters from the floor. The size of the basketball backboard is 180x105 cm. From the bottom edge of the backboard to the floor should be 290 cm. The basket is attached at a distance of 0.15 m from the bottom edge of the backboard.
The correct distance of the basketball hoop from the floor to the top is measured by a person trained in a special profession, not only accuracy is important here, but also the difference in slopes in one direction or the other, the correct parameters are as follows: 3.5 meters from the floor.
Basketball is played in an open area or in a sports hall at least seven meters high. Dimensions 28 by 15 meters.
The shield should be 180 by 105 centimeters in size. The basket is a metal ring, on which a mesh with a hole is stretched. The grid is fixed at a distance of 3 meters 5 centimeters from the floor.
There are only 12 people in one team, but five players from each team are put on the field.
Close and mid range ball is worth 2 points,
A ball from long range is worth 3 points.
Free kick counts as one point.
Basketball is an Olympic sport, invented by James Naismith.
World Basketball Championships have been held since 1950, and the first European Championship was held in 1935
The most famous basketball players are Clyde Drexler, George Miken, Michael Jordan, Andrei Kirillenko
In professional basketball, the dimensions of the backboard and its height are strictly regulated. It has a size of 1800x1050 mm and is located at a height of 3050 mm. There are no special requirements in amateur basketball, and it is determined only by the terms of use.
According to the established FIBA standards, the lower edge of the basket is fixed at a height of 3050 millimeters from the floor, both for the game of men's and women's teams. The basket itself is covered with mesh without a bottom on a hoop with a diameter of 450 mm.
Basketball hoop sizes standards
0015
When choosing sections for the development of a child, the choice of parents often falls on such a sport as basketball. And this is not surprising, because during the game the muscle groups of the arms, legs, shoulder girdle, and back develop.
It also increases general endurance, coordination, motor skills, the ability to think, quickly analyze the situation and make decisions.
You can start training from an early age, gradually complicating the tasks as you develop the necessary skills.
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The main projectile in this sport is a metal ring equipped with a wicker basket.
The length of the basket reaches 42 cm, and the diameter is such as to hold the ball that has fallen into it for a second.
Photo 1. Scheme of a standard basketball stand with indication of the height and diameter of the basket. Children need a smaller shield.
In professional sports, this design is rigidly attached to a backboard made of impact-resistant material. The shield itself is on a metal stand that cannot be moved. This is the main difference between gym equipment and children's equipment.
Characteristics of children's basketball hoop
From the age of 3-4, it is too early for a child to participate in a full-fledged team training, however, a home basketball hoop will come to the rescue, thanks to which the child will learn how to make the first throws and will undoubtedly fall in love with this sport.
Equipment for the smallest athletes also consists of a mesh ring attached to a static or mobile stand. In the case of mobility, such a projectile can be adjusted to the growth of the child as needed.
In younger games, heavy real balls of athletes are not used, so the size of the children's basket will be different from the adult.
So, on average, the diameter will be from 25 to 30 cm. Almost all models are equipped with shields made of impact-resistant material. This option is suitable for children from three to four years.
For older children, aged 7-9 years, baskets of various models are offered by manufacturers.
They are made with a larger diameter - from 30 to 45 cm, a special wicker basket of white or multi-colored cords is attached to such a ring, a basketball hoop is securely fixed to a strong shield.
Along the perimeter, which, as a rule, is made of a metal stiffening frame with removable fasteners. Thanks to this, the ring can be very quickly and simply hung on top of the door in the apartment. If you need to place it below, or not near the door, these same removable fasteners are removed.
Help! In professional sports, there are strict requirements for equipment.
So, the inner ring of the basket is made of durable steel, the size cannot be more than 45.7 cm and less than 45 cm.
Coloring is allowed only in bright orange. There is no strict size standard for children's basketball baskets, so manufacturers are guided by common ball diameters. Therefore, you can find sizes from 25 to 45 cm.
Materials used
Manufacturers of inventory in every possible way meet the needs of children, so models for the smallest are made bright and colorful. The material for the ring and shield is light plastic. To ensure sufficient rigidity of the structure, the rack is made of metal.
The material of the next series of models, designed for an older age category, is significantly different. Here you can also find plastic rims, however, metal ones remain the strongest and most reliable. For these shields, they no longer take plastic, but impact-resistant polycarbonate.
Location height
Rings on movable racks are set at the level of the child's chest, as throwing skills are poorly developed, gradually increasing the location relative to the floor.
The height of the basket for older children should be such that the child does not touch the edge of the ring with his outstretched hand.
This height will allow you to gradually load the muscles and give a certain load for the development of coordination of movements.
Important! When fixing the ring, it is required to leave a distance of at least 50 cm from above, otherwise touching the ceiling and rebounding will be inevitable. This may result in injury to the player.
Rules for placing the ring of house
When installing a children's basketball hoop at home, the safety of the child must also be taken into account.
- So, the rings on the rack must be reinforced from below with an additional load, for example, sand, poured into the base of the structure. This will give greater stability if the baby, without calculating the strength, will fly into it.
- The choice of the location of the projectile in the house must be done taking into account the possible ricochet of the ball into breakable interior items, such as a mirror, glass, TV and others.
Watch a video showing how to make a basketball hoop for kids.
Basketball is a very gambling game, it has a beneficial effect not only on muscles, but also on blood circulation. It also helps to release excess energy in a child. However, this also has a downside - having played too much, the baby can get too carried away and hang on the ring or run into the rack. Therefore, when choosing, you should focus on high-quality and durable models. Attach the projectile to the wall as securely as possible, and explain to the players the rules of the game and security measures.
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The rules are not only about the game! Basketball court standards: dimensions, coverage and markings
Basketball is played everywhere: in specialized halls, on equipped outdoor or near-home playgrounds.
But professional tournaments still take place in the halls on an absolutely even surface that prevents injuries that a basketball player can receive during the game. Tournament basketball courts have several important components, one of which is the parameters of the playing space.
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Basketball playing field is a rectangle marked with lines, which are applied either in white or yellow paint. The field can be located both inside a room (covered area) and on the street. On street playgrounds, if they are equipped specifically for basketball games, artificial turf is laid or games are played on asphalt. Some amateur basketball fields are turfed.
Photo 1. Outdoor basketball court. The playing area is fenced, the field is covered with a special rubber crumb.
The size of the basketball court varies from standard, suitable for official competitions, and amateur.
Tournament venues have a size of 28 x 15 m, amateur ones should not exceed 30 x 18 m. The height of the ceiling of a covered area is from 7 meters (in some cases about 12). Lighting is adjusted in such a way that the luminescence does not interfere with the players and referees, but the entire field is evenly covered.
Help. Until the late 1960s, basketball games were played mostly outdoors. Now tournaments are held only in specialized halls. The exception is streetball (street basketball).
The court is lined with markings indicating certain zones and is equipped with two posts with backboards and baskets (ring and net), which are located on both sides of the playing field. On his scheme, as a rule, the size is indicated in length and width, the opponents' zones, where they indicate the ring, the central circle, the front, side, three-point, center lines, and the face-off lines.
What are the sizes of basketball courts and sports halls?
There are several types of basketball courts.
Public
Fields for amateur games may have standard parameters (28 x 15 m) or slightly differ in size.
Thus, school and university playgrounds are 12–15 m wide and 21–28 m long.
Parameters of the playing area for mini-basketball (for children under 12 years old) - 17 x 12 m.
The size of a streetball field is half the size of a basketball field - 15 x 14 m or even 14 x 9 m.
Attention! Most public courts are 26m x 14m, but must not exceed 30m in length and 18m in width. The main conditions are the parameters of the playing area and coverage. The standard dimensions are 28 x 15 m. In the halls at professional tournaments, the coating is checked for chips and bulges. Since basketball players move quite quickly across the field, coating defects can lead to serious injuries: bruises, sprains, fractures.
The playing field must be rectangular in shape with clear markings, well lit from all sides. The marking is applied with paint of the same color (white or yellow) and has a width of at least 50 mm.
Photo 2. Indoor basketball court for official tournaments. The field is covered with parquet, stands are located around.
Components of the playing field
There are several zones in the basketball court, separated by lines.
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The court is marked around the perimeter with boundary lines (necessarily contrasting with markings of a different color), which consist of front and side contours and are not part of the basketball field. Their task is to highlight the playing area itself and separate all obstacles: players' benches, places where the referee is located, etc., no less than two meters from the space where the match takes place (it is from the limiting line that the countdown begins).
Central line
Runs parallel to the front line through the side lines. It is applied with the same paint as the main marking (white or yellow).
Central circle and general scheme
Located in the middle of the playing area.
From here, the ball begins to be played between the opposing teams. As a rule, the circle is only highlighted, but not painted. If it is colored, it must match the color of the restricted areas.
Photo 3. Scheme of zones on the basketball court. In the middle is the central circle, from where the ball is thrown.
Three-Point Zone
Highlights where the player is shooting from. A successful throw from outside the zone bounded by this arc earns the team exactly three points.
Help. The three-point line appeared in 1979-1984, and was adopted first by the NBA, then by the NCAA, and in 1984 by FIBA.
Free-throw zone
Together with the facial contours, they designate the so-called restricted areas (painted in the same shade as the central circle), which extend to the sides of the playing area of the field and are semicircles with a radius of 180 cm. The middle of the restricted areas are located in the center free throw lines.
Markings
There must be markings on the basketball court.
These include: front, side, central and central circle. The side and front contours outline a rectangle along the perimeter of the field, highlighting the playing area.
The side lines form the long sides of the rectangle, while the front lines form the short sides.
The central line delimits the field into two equal zones and is drawn through the middle of the side contours, protruding 15 cm beyond the border of each of them.
The center circle is located in the middle of the court relative to the boundary lines. Its radius is 180 cm (measurements are made to the outer edge of the circle).
Throw lines
These are: three-point area, free throw lines, shooting area.
Three-point zones are measured from the three-point arc to the center of the opponent's hoop. There are standards for designating these zones: according to the NBA regulations, this distance is 7.24 m, according to FIBA rules - 6.75 m, in the NCAA league - 6.
32 m.
The free throw line is 360 cm long and runs parallel to each end line. According to the regulations, the edge of the free throw contour must be at a distance of 580 cm from the inner edge of the end line, and the middle - on an imaginary straight line connecting the midpoints of the two end lines.
Shooting area - the area from which basketball players take free throws.
Features of the team bench area
The basketball court itself includes a playing field marked out with lines and divided into zones, as well as an area where benches of substitutes are located and places for referees and coaches.
According to the regulations, the zones of substitutes' benches are limited by lines from 2 meters and are located on the same side as the scorer's table, but not less than 1 meter from the spectator seats. Bench areas can be either square or rectangular.
Supports and backboards, as components, on which the marking of the field depends
The marking of the playing area and the dimensions of the basketball court itself directly depend on the basketball posts.
The supports of the structures on which the shields and baskets are attached are located 2 meters from the front lines. The color of the supports should stand out. As a rule, they are painted in colors that contrast with the walls and the site itself.
Up to a height of approximately 2-2.15 meters, the supports are covered with protective material. Shields are made of tempered safety glass (transparent) or wood (white), not less than 3 cm thick. The parameters of the shield used in official competitions are 1.8 x 1.1 meters. The shield is mounted on a support at a height of 2.9 m above the level of the platform. The marking is applied with black (if the shield is white) or white (if transparent) paint. The center is marked with a rectangle 590 x 450 mm. Line width - 50 mm.
Surface of the field
The playing field is regularly subjected to heavy loads in the form of basketball players jumping, hitting the ball, and so on, so its surface must be strong and elastic, not crumble or crack.
Basketball areas in most cases are covered with either wood (parquet) or rubber. The rubber coating is very durable, and the parquet is reliable and environmentally friendly.
On open areas, a self-leveling coating is laid, consisting of pressed rubber crumb or a rolled rubber coating. Such a coating has some advantages over a conventional lawn, since it is less traumatic due to the fact that it is non-slip, perfectly absorbs the falls of basketball players, is durable, waterproof, and unpretentious in maintenance.
Basic surface requirements for professional tournaments:
- Wooden or synthetic.
- No chips, cracks or other defects.
- Has a non-glare surface.
Watch a video showing how to prepare an NBA basketball court.
The correct parameters of the court, as well as the clarity of the markings, are very important, especially in official tournaments. Requirements for the basketball field have been developed for many years to streamline the game and make it the most interesting, spectacular, understandable for players, referees and spectators.
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How high is the basketball hoop?
-
The basketball hoop is at a height of 3 meters 5 centimeters, but this is provided that the gym is normal. At our school, the gym was on the first floor, and the ceilings at the school were not high, so the ring hung at a height of only 2 meters. It was very easy to throw the ball into it.
-
Basketball is basically a folk game, so the equipment requirements are different.
Equipment for amateur basketball: there are no standards and rules here, everything is aimed at ease of transportation and installation of equipment.
Can be like this
Grassroots basketball equipment: no fantasies, everything strictly complies with the Rules:
-
Mounting height for the upper edge of the basketball hoop 3 meters 5 centimeters.
There may be a tolerance of up to 6 cm. It is clearly visible in this diagram. Other important dimensions for the location of the basketball hoop are also indicated.
-
The basketball hoop (basket) is attached to the basketball backboard, the lower edge of which is at a height of 2.75-2.9 meters. And the basketball basket itself is standardly located at a height of 3 meters 5 centimeters from the floor, or, if measured in pounds, then at a height of 10 pounds.
-
An interesting question, I sometimes thought about this question myself, especially when, switching channels, I got to basketball. It turns out that the basketball hoop is located at a distance of 3 meters and 5 cm from the ground.
-
The basket is 10 feet high, which is 3.05 meters from the floor in a closer standard. The size of the basketball backboard is 180x105 cm. From the bottom edge of the backboard to the floor should be 290 cm. The basket is attached at a distance of 0.
15 m from the bottom edge of the backboard.
-
The correct distance of the basketball hoop from the floor to the top is measured by a person trained in a special profession, not only accuracy is important here, but also the difference in slopes in one direction or the other, the correct parameters are as follows: 3.5 meters from the floor.
-
Basketball is played in an open area or in a sports hall at least seven meters high. Dimensions 28 by 15 meters. The shield should be 180 by 105 centimeters in size. The basket is a metal ring, on which a mesh with a hole is stretched. The grid is fixed at a distance of 3 meters 5 centimeters from the floor.
There are only 12 people in one team, but five players from each team are put on the field.
Ball from short and medium distances is worth 2 points,
A ball from long range is worth 3 points.
Free kick counts as one point.
Basketball is an Olympic sport, invented by James Naismith.
World Basketball Championships have been held since 1950, and the first European Championship was held in 1935
The most famous basketball players are Clyde Drexler, George Miken, Michael Jordan, Andrey Kirillenko
-
In professional basketball, the dimensions of the backboard and its height are strictly regulated. It has a size of 1800x1050 mm and is located at a height of 3050 mm. There are no special requirements in amateur basketball, and it is determined only by the terms of use.
-
According to the established FIBA standards, the lower edge of the basket is fixed at a height of 3050 millimeters from the floor, for both men's and women's teams. The basket itself is covered with mesh without a bottom on a hoop with a diameter of 450 mm.
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GOST R 56434-2015 Equipment for sports games. Basketball equipment. Functional requirements, safety requirements and test methods
FEDERAL AGENCY FOR TECHNICAL REGULATION AND METROLOGY
National
Standard
Russian
Federation
Equipment for sports games
Basketball equipment
Functional requirements, Safety requirements and testing methods
EN 1270: 2005 (NeQ)
Edition
Moscow
Standards and forms
2015
Foreword
1 DEVELOPED by the Self-Regulatory Organization Non-Profit Partnership “Industry Singing of National Manufacturers in the Field of Physical Culture and Sports Promsport” (SRO Promsport)
2 INTRODUCED by the Technical Committee for Standardization TK 444 "Sports and tourist products, equipment, inventory, physical culture and sports services" article
4 This standard has been developed taking into account the main regulatory provisions of the European regional standard EN 1270:2005 “Equipment for sports games.
Basketball equipment. Functional requirements, safety requirements and test methods" (EN 1270:2005 "Playing field equipment - Basketball equipment - Functional and safety requirements, test methods". NEQ)
5 INTRODUCED 8FIRST
The rules for the application of this standard are established in GOST R 1.0-2012 (section 8). Information about changes to this standard is published in the annual (as of January 1 of the current year) information index "National Standards", and the official text of changes and amendments is published in the monthly information index "National Standards". In case of revision (replacement) or cancellation of this standard, a corresponding notice will be published in the next issue of the monthly information index "National Standards". Relevant information. notification and texts are also posted in the public information system - on the official website of the Federal Agency for Technical Regulation and Metrology on the Internet ()
© Standard inform.
2015
This standard cannot be fully or partially reproduced, replicated and distributed as an official publication without the permission of the Federal Agency for Technical Regulation and Metrology
and
NATIONAL STANDARD OF THE RUSSIAN FEDERATION
Equipment for sports games Functional requirements BASKETBALL EQUIPMENT 9002 9002 , safety requirements and test methods
Equipment gog sports games
Basketball equipment. Functional requirements, safety requirements and test methods
Date of introduction - 2016-07-01
1 Scope
This standard applies to class A to E basketball equipment. The standard specifies the functional requirements, safety requirements and test methods for basketball equipment.
This standard does not apply to basketball equipment for home use and practice basketball equipment for practicing ball shooting.
Note - Basketball training equipment for practicing ball throws is used for training in throwing a basketball into a basket.
2 Normative references
This standard uses normative references to the following standards:
GOST 380-2005 Ordinary quality carbon steel. Grades GOST 25552-82 Twisted and wicker products. Test methods
Note - When using this standard, it is advisable to check the validity of reference standards in the public information system - on the official website of the Federal Agency for Technical Regulation and Metrology on the Internet or according to the annual information index "National Standards", which is published as of 1 January of the current year, and according to the issues of the monthly information index "National Standards" for the current year. If a dated reference is replaced by a referenced standard, it is recommended that the current version of that standard be used, taking into account any changes made to that version. If the reference standard to which the dated reference is given is replaced, then it is recommended to use the version of this standard with the year of approval (acceptance) indicated above.
If, after the adoption of this standard, a change is made to the referenced standard to which a dated reference is given, affecting the provision to which the reference is given, then this provision is recommended to be applied without taking into account this change. If the reference standard is canceled without replacement, then the provision. in which a link to it is given, it is recommended to use it in the part that does not affect this link.
3 Requirements
3.1 Functional requirements
3.1.1 Classification of basketball equipment Basketball equipment is classified into types and classes.
3.1.1.1.1.1 The classification of basketball equipment by type is the Table 1.
Official
table 1 - Classifications of basketball equipment according to type
3.1.1.2 Classification of basketball equipment for classes is given in Table 2. Table 2 - Classification of basketball equipment for classes
| Class | mm |
| A | No less than 3250 |
| in | at least 2250 |
9000 9000 C 9000 ° C. 0005 ring - 1 pc.; mesh - 1 pc.; carrier truss; stability tool. 3.1.2.2 The installation height of the basket for basketball equipment of classes A-D is shown in Figure 2 and Table 3. Baskets for basketball equipment Classes A-O Table 3 - Basket height for basketball equipment Classes A-O | 430 | 150 | SO | 50 |
| 1800 | 1200 | 300 |
| 1200 | 900 | - |
| 1100 | 700 |
| | 600 |
| All others | All others |
E not installed.
Do not use holes when attaching the basketball backboard. Any other method of attaching the basketball backboard is allowed if safety requirements are met.
3.1.2.5 Basketball hoop dimensions are shown in Figure 5.
D - hoof attachment plate Figure S - Basketball hoop dimensions
3.1.2.6 The basketball backboard is made of the following materials:
- Synthetic or mixed material;
- transparent synthetic material;
• safety glass;
• metal.
3.1.2.7 The hoop and backboard must be painted in contrasting colors. Recommended colors of basketball backboards for Class A basketball equipment are presented in Table 5.
The color of the ring must be orange.
On the underside of the ring, 12 evenly spaced elements must be welded to secure the mesh.
3.1.2.10 Basketball equipment class A-D net
The netting threads used to make the net may be synthetic or natural.
Net must be white.
The mesh must be made of threads for weaving nets with a breaking load of at least 1700 N in accordance with GOST 25552.
Netting threads must have a minimum diameter of 4.
5 mm.
When the net is attached to the ring, it must hang vertically from the net hooks. The mesh length in this position is 400**° mm.
The net must be made in such a way that when a ball with a diameter of 749-780 mm is thrown in, it experiences resistance when passing through the net, but does not get stuck. The passage of the ball through the net must be clearly visible.
3.1.2.11 Truss for basketball equipment classes A-O
Basketball equipment designed to allow height adjustment of a basketball backboard with basket and net requires locking devices at a height:
• 3050 mm for basketball:
• 2600 mm for mini basketball.
After adjusting the height, the horizontal dimensions from the backboard to the playing field must not change.
3.2 Safety requirements
3.2.1 All corners and edges located in the free space of the playing field area at a height of up to 2900 mm and not protected by upholstery, must have a radius of curvature of at least 3 mm or be made with a bevel.
Backboard corners must be beveled or padded.
3.2.2 Ring
3.2.2.1 The ring must be fixed to the truss in such a way that the force transmitted from the ring does not act directly on the backboard (see Appendix A).
3.2.2.2 The hoop attachment plate must be designed so that it does not protrude beyond the bottom edge of the backboard.
3.2.2.3 Shock absorber rings must comply with the following requirements:
• There must be no gap between the clevis and the ring that could cause the player's fingers to get stuck:
the upper side of the hoop at the point farthest from the basketball backboard in accordance with B.1 of Appendix B:
• When the damping mechanism is actuated, no gaps of more than 8 mm should appear between the body of the damping mechanism and the device for its fastening in accordance with B.1 of Appendix B .
• When the damping mechanism is actuated, the ring must not deviate downward from the initial horizontal position by more than 30' in accordance with B.
1 of Appendix B:
- the amount of residual deformation when testing the ring with a shock absorber in accordance with B.2 of Appendix B must be no more than 10 mm.
3.2.2.4 The value of permanent deformation of a rigidly fixed ring when tested in accordance with Annex 6 shall not exceed 10 mm.
3.2.3 Net attachment
3.2.3.1 The attachment of the net to the ring must be done in such a way that the player's finger cannot get stuck. The gaps should not be more than 8 mm. An example of hooks for attaching a net is shown in
figure 6.
Figure 6 - An example of hooks for attaching a net
The storage stowage must be designed in such a way as to prevent inadvertent adjustment changes during operation.
3.2.4.2 The person who makes the adjustment with this tool must be able to observe both the adjustment mechanism and the backboard during the adjustment process.
3.2.5 Upholstery
3.2.5.1 Basketball backboard padding for class A and B basketball equipment must be made as follows:
- padding must cover the lower edge and sides of the basketball backboard at a distance of up to 350 mm from the bottom edge and sides edges:
• The front and back sides must be padded at least 20 mm from the bottom edge (see figure 7).
