The goal ball is a ball game with the elderly as the main object. Therefore, the site construction must be based on the physiological characteristics of the elderly, choose a place with good shelter, sunny, safety and drainage conditions, with better greening, and try to create a good environment for exercise, entertainment and rest.
Standard gate court size requirements:
1. The match line is 20-25 meters long and 15-20 meters wide
2. The buffer zone is 1 m from each side of the competition area (the service area is within 1 m)
3. The auxiliary area is more than 1m from each side outside the buffer area (used to place scoreboard and field seat).
4. The width of match line and limit line is 1-5cm.
5. The minimum size of the site without auxiliary area is 22m * 17m = 374m2.
6. The minimum standard size of the site including auxiliary area is 24m * 19m = 456m2.
7. A 30 cm high and 20-50 cm wide ball retaining wall shall be set at the edge of the site. Artificial turf or other elastic materials shall be pasted on the facade of the inner wall to prevent the ball from being damaged by the ball hitting the wall.
8. Goal and finishing post. There are three goals and one finishing post in the field. The goal is made of a round metal object with a diameter of 1cm, with a height of 20cm (from the ground) and a width of 22cm. The terminal post is made of a round flat top metal object with a diameter of 2cm, with a height of 20cm (calculated from the ground) and firmly nailed into the bottom.
Installation of artificial turf on the gate Court:
First stage: construction preparation stage
1. Combined with the actual situation of the site, the drawings are reviewed and the layout plan is made.
2. Coordinate with Party A, handle relevant procedures for commencement, and carry out technical and quality disclosure.
3. Connect the construction water and electricity, and make preparations before commencement.
Stage II: site foundation acceptance
1. The foundation shall be measured and inspected on the spot and verified against the basic acceptance data of Party A. the construction can be started only when the construction requirements are met. If the foundation is unqualified, the repair plan shall be put forward to Party A in time.
2. The site shall be cleaned and all sundries on the foundation shall be removed to ensure that when the artificial grass is paved, the bottom cloth is paved flat and firmly bonded.
The third stage: artificial grass pavement construction stage
In order to ensure the quality and flatness of artificial grass pavement, meet the requirements of international rules, and ensure the use quality and appearance of artificial grass in the future, the order of artificial grass pavement is as follows:
1. Set out according to the requirements of the drawings, find out the vertical and horizontal axes of the site, determine the center position of the site, and determine the location of the boundary around the site.
2. Arrange the straw rolls on the site in order according to the drawings, without damage, foundation exposure or wrinkling.
3. Spread out the artificial grass, park it for half an hour and stretch it to the natural position, and then start the joint from one side to the other according to the long side of the site. During the joint process, pay attention to the positive and negative conditions of the joint belt to ensure the same direction. Use a special cutting tool to cut the adjacent overlapped part of the turf and clean up the debris, and make a white line for standby.
4. Lay the special joint belt on the foundation between the turf and apply the special glue. In the process of applying the glue, it must be evenly applied, and then glue it after it is dry. The allowable gap of the bonding joint is within 3mm. If it exceeds the range, obvious joint traces will appear. All the green lawn parts are bonded in turn.
Stage 4: line drawing
After the green turf is laid, cut the turf and set a 2cm wide white line, align the grass on both sides, stick it on the tape, press the weight to level the joint, and then integrate the joint to bond the turf. After the completion of the whole joint project, the line drawing project of the playground shall be carried out in strict accordance with the design drawings and the standards required by Party A. during the cutting of the line drawing, attention shall be paid to the width of the cutting grass and the width of the white grass. Generally, the gap between the width of the cutting grass and the width of the white grass shall not exceed 3mm, and attention shall be paid to the straightness of the cutting. When bonding the white line, it is necessary to brush the glue evenly to make it stick stably.
The fifth stage: quartz sand filling construction stage
(according to the density of artificial grass, the filling amount of quartz sand is determined. High density artificial grass does not need to be filled with quartz sand.)
After the completion of the line drawing project, the sand injection project is started. In the process of sand injection, it is necessary to pay attention to the uniformity of sand injection. The injection method is vertical and horizontal injection. The standard dosage of sand injection is 4kg per square meter of grass seedling, and the sand size is 0.4-0.8mm. During sand injection, speed and sand production speed shall be controlled to make sand injection uniform.
Stage 6: project closing stage
1. Draw as built drawings, sort out construction data, make construction summary and compile acceptance data.
2. Clean up the site and negotiate with Party A on acceptance matters.
