tennis court
A standard tennis court covers an area of not less than 670 square meters (36.6 meters (north-south) x 18.3 meters (east-west)), which is also the net size of a standard tennis court surrounded by a retaining net or an interior wall of an indoor building. Within this area, the standard dimensions of an effective doubles court are: 23.77 meters (length) x 10.98 meters (width), and the standard dimensions of an effective singles court are: 23.77 meters (length) x 8.23 (width), with a margin of no less than 6.40 meters behind each end line, and a margin of no less than 3.66 meters outside each side line. To install net posts in the court, the distance between posts is 12.80 meters measured at the center of the two posts, and the top of the net posts is 1.07 meters from the ground.
basic requirement
Cement concrete foundation, solid and flat (flatness requirements: 3m straightedge error is not more than 3mm), a certain drainage slope (generally not more than 40/00 horizontal, vertical not more than 20/00, must ensure that the water drainage), the strength of the building concrete standard C25 strength, after pouring water conservation not less than 7 days, the overall curing maintenance period of not less than 28 days (to ensure that the curing time of cement, so that the cement in the curing process of white powder completely precipitated on the surface of the foundation. white powder produced in the curing process is completely precipitated on the surface of the foundation)
Technical indicators
(Grinding - pickling - priming - caulking - leveling, patching)
a, grinding seam: the temperature of the seam on both sides of the base surface 4 ~ 5 mm wide each grinding into a beveled mouth depth of 3 mm, so that the temperature of the seam surface into a "V" type, (each 4 ~ 5 wide is to improve the bonding area of caulking adhesive and the base surface.
(Increase its adhesive force, 3mm deep is to ensure that the thickness of caulking adhesive without taking up the position of the elastic layer, to ensure that the overall cushioning is good, so that the thermal expansion and contraction of the foundation does not affect the surface of the silicon PU).
b, cleaning: rinse with a high-pressure water gun (generally rinse twice), wash and dry the original color of the cement base surface requirements, no white chalk and floating loose material.
Construction
a. Roll a primer evenly with a roller.
b. Use special pitch polyurethane glue and color EPDM particles to mix evenly at the ratio of 1:5 and then spread the surface layer evenly by hand (according to Party A's requirements for pink treatment), and at the same time, compact it with heated rollers.
c. Allow top coat to cure and scribe lines.
pitch marking
(i) Steps for the delineation of the field for both singles and doubles
First, choose the location of the net, draw a straight line 12.8 meters long (baseline), make a mark X at the midpoint, and then measure from this point to both sides, and set the points as follows: a, b points X4.11 meters from the midpoint, where the net intersects with the singles sideline. n, n points are the locations of the singles posts, each X5.03 meters from the midpoint. a, b points X5.49 meters from the midpoint, where the net intersects with the doubles sideline. n, N points are the locations of the doubles posts, each X6.40 meters from the midpoint. n, N points are the locations of the doubles posts, each X6.40 meters from the midpoint. Points N and N are the locations of the doubles net posts, each X 6.40 meters from the midpoint. Add spikes at points A and B and connect them to the end of a measuring tape, measure 16.18 meters from point A to form the AC line (half-court diagonal), and 11.89 meters from point B to form the BC line (half-court sideline), and then tighten the AC and BC lines, so that the two lines intersect at point C, which is the corner of the half-court. Reverse the measurement to find out the other corner D point. The accuracy of the above operation can be checked by the length of the CD line, this end line should be 10.97 meters long. At the same time, the center point J and the singles sideline can be marked. Points c and d are 1.37 meters from points C and D respectively. The center line and the serving line points F, H, and G can all be drawn on the bc, XJ, and ad lines 6.40 meters from the net, respectively. The court on the other side of the net is then delineated in the same way.
(ii) Steps for drawing the line for singles-only courts
a, b, c, d, the outer edge of the line are not necessary to draw. Can also be added at a, b nails, respectively, with a measuring tape connected to instead of A, B, and then 14.46 meters and 11.89 meters in length, to find out the singles end line at both corners of the c, d. The net post at n, n, and should be used in the 10-meter-long singles nets. (C) singles, doubles courts, if the singles hanging doubles net, it shall be in the n, n with two 1.07 m high pillars to support the net, the diameter or length of the pillar shall not exceed 7.5 cm, the center of the pillar should be from the outside edge of the singles sideline 0.914 m, the two net columns known as "singles pillar". In order to facilitate the placement of the singles pillars, they shall be marked with white dots at points n and n on the field.
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