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TABLE OF CONTENTS
|
Introduction |
Diagrams: Court Specification |
Court Markings
United States Racquetball Association and International Racquetball
Federation officially approved specifications. © Copyright 01/13/1983;
rev. 1988; 1997. |
|
introduction |
This specification defines recommended standards for racquetball
courts. It has been authored and supplied by the United
States Racquetball Association [USRA] and the
International Racquetball Federation
[IRF]. The objectives of this document are:
- 1. to ensure comparability of recommended standards for courts
from one country to another; and
- 2. to guide manufacturers, builders and designers as to suitable
standards for racquetball court construction.
It is not the intent of this document to refer to any method or
material as correct for the building of a court. Rather, the
specification is a recommendation for performance, defining basic
characteristics of racquetball courts without reference to materials
or methods of construction.
Courts built to this specification will be suitable for all types of
play including international matches and such events as may be decided
from time to time by the respective amateur and professional governing
bodies, within their respective countries.
The USRA/IRF Technical Committee reserves the right to amend this
Performance Specification at any time, but the Committee will inform
the membership 90 days prior to any changes.
The specification applies only to courts constructed on or after
January 1, 1988.
The specification has been produced by the USRA &
IRF. The
assistance of numerous manufacturers and suppliers in commenting on
drafts and supplying information is hereby acknowledged. |
SECTION ONE: PERFORMANCE SPECIFICATION
|
- [top of page]
- 1.1 General Configuration of the
Court (diagram)
- 1.2 Match Officials - Tournament
- 1.3 Spectators
- 1.4 Camera Facilities
- 1.5 Camera Panels
1.1 General Configuration of the Court.
The general configuration of the court shall be as shown below (see
detail for floor markings):
1.2 Match Officials - Tournament. There
shall be provided space for a linesman and a referee, who shall be
able to see the whole of the court and shall be able to hear the play
and the players and be heard by them. a. The space for the linesman
and referee shall be behind the plane of the back wall. b. Where side
wall glass is used for tournament play, it is recommended that a space
for a linesman be provided at the service box of the side wall.
1.3 Spectators. Spectator areas may be
located behind the plane of any of the walls of the court.
1.4 Camera Facilities. Play may be
televised, filmed, photographed or recorded in any from above the
court or through any of the walls, provided a. no camera or other
equipment may project into any part of the court or below the minimum
free height above the court specified under section
2.2 -- Clear Height; and b. players inside the courts are not
aware of any camera, camera lighting or other equipment, or any
personal operating the cameras or other equipment, behind either the
front or the side walls during play.
1.5 Camera panels. Camera panels may be
incorporated in any part of the court playing walls provided that any
such panel shall: a. be flush with the adjacent wall surfaces on the
court side; b. match as closely as possible the color of the adjacent
surfaces on the court side; c. have similar rebound characteristics to
the surrounding court playing surface; d. be fixed in such a way as to
withstand indefinitely the impact of the ball, racquets and players in
normal play; and e. be constructed of material (for example tempered
glass) which will not as likely cause serious injury to players or
spectators if it breaks. |
SECTION TWO: COURT DIMENSIONS AND
TOLERANCES
|
- [top of page]
- 2.1 Plan Dimensions
- 2.2 Clear Height
- 2.3 Verticality of Court Walls
- 2.4 Straightness of Court Walls
- 2.5 Plane of Court Walls
- 2.6 The Floor
2.1 Plan Dimensions. The plan dimensions
of the court, measured 3 feet above finished floor level, shall be:
Length: 40 feet ± 4.8 inches or 1.00% Width: 20 feet ± 3
inches or 1.25% Height: 20 feet ± 3 inches of 1.25%
2.2 Clear Height. The clear height above
finished floor level (i.e. the height to the underside of the lowest
obstruction) over the whole of the court shall be not less than 20
feet + 3 inches. a. The minimum rear wall shall be 12 feet 1 inch
above the finish court floor. The maximum is 20 feet 3 inches. b. The
rear wall shall be constructed so as all materials are the same to 12
feet except as follows: c. Where vision windows are to be placed in
rear walls, windows shall be flush with court surface and be
constructed of a safety material; d. Minimum window height above floor
is recommended to be 2 feet 6 inches; and e. Door finish may be
slightly different than the surrounding wall surface, but must be
flush and playable.
2.3 Verticality of Court Walls. The court
walls shall be plumb vertically to within ½ inch in 20 feet at
any place on the court.
2.4 Straightness of Court Walls. The
walls of the court shall be straight to within plus or minus 3/4 inch
in the length of the side wall and ½ inch in the length of the
front wall.
2.5 Plane of Court Walls. The walls of
the court shall be plane, and a. Have no indentations, holes or open
joints more than 3/32 inch in any dimension in the plane of the wall;
b. Have no variation from the true surface of more than 1/8 inch in 12
inches.
2.6 The Floor. The playing floor shall be
level to within ¼ inch in any 10 foot radius. a. Any joint in the
floor finish shall be plane to within 1/16 inch. Any open joint shall
be not more than 3/32 inch wide, except that an expansion gap not more
than 5/8 inch wide is recommended at the junction of the floor with
any wall. |
SECTION THREE: COURT MARKINGS
|
- [top of page]
- 3.1 Application
- 3.2 Required Markings
- 3.3 Playing Lines for a Racquetball
Court (diagram)
3.1 Application.
- a. All court markings are recommended to be 1½ inches wide
and colored bright red.
- b. All court markings shall be straight to within plus or minus
1/16 inch in 10 feet.
- c. The maximum variation from the correct position of any court
marking at any point shall not exceed ¼ inch
3.2 Required Markings. There shall be
lines as follows:
- a. Short Line - The short line is midway between and is parallel
with the front and back walls. The back edge of the line is 20 feet
from the back wall.
- b. Service Line - The service line is parallel with the short
line and the front edge of the service line is 5 feet from the back
edge of the short line.
- c. Service Zone - The service zone is the space between the outer
edges of the short and service lines.
- d. Service Boxes - A service box is located at each end of the
service zone by lines 18 inches from and parallel with each side
wall connecting the short line and service line.
- e. Receiving Lines - Back edge of the receiving line is 5 feet
from the back edge of the short line. The segment from the wall is
21" long. There are 16 additional segments, each 6" long,
with 6" spaces between them, which complete the line. See
diagram.
- f. Screen Lines - The outside edge of the line (nearest to the
center of the court) is three feet from the side wall. See diagram.
- g. Line edges - "Back edge" is defined as the edge on
the line closest to the back wall; "Front edge" is defined
as the edge on the line closest to the front wall.
[top
of page]
3.3 PLAYING LINES FOR A RACQUETBALL COURT
(diagram above)
- All lines are solid 1½ wide and red in color.
- No lines are allowed on the walls.
- Short line - Back edge is exactly midway in court.
- Service line - Front edge is 5' from the back edge of the short
line.
- Service box - The inside edge of the lines are 18" from the
side walls.
- *Receiving line - Back edge of the receiving line is 5' from the
back edge of the short line. The segment from the wall is 21"
long. There are 16 lines, each 6" long with 6" spaces
between them, which complete the line.
- *Screen line - The outside edge of the line is three feet from
the side wall. Back edge is the edge on the line closest to the back
wall. Front edge is the edge on the line closest to the front wall.
|
SECTION FOUR: COURT WALLS
|
- [top of page]
- 4.1 Construction of Court Walls
- 4.2 Strength of Court Walls
- 4.3 Deflection of Court Walls
- 4.4 Player Impact
- 4.5 Return
- 4.6 Wall Finishes
- 4.7 Color of Court Walls
- 4.8 Reflectance of Walls
- 4.9 Ball Rebound from the Court Walls
- 4.10 Joints in Playing Surfaces
- 4.11 Flank Wall Panels
- 4.12 Wall to Wall & Wall to
Ceiling Junctions
- 4.13 Wall to Floor Junctions
4.1 Construction of Court Walls. Each
wall of the court shall be of the same construction over the whole of
the playing area except as allowed under Section 1.5
-- Camera Panels.
4.2 Strength of Court Walls. The walls of
the court, and all components in them, shall be capable of
withstanding all the stresses which may be placed upon them in normal
play as a result of the impact of balls, racquets and players, and
shall not suffer any permanent or temporary damage as a result of
these impacts.
4.3 Deflection of Court Walls. The walls
of the court shall not deflect under the impact of the ball in normal
play to such an extent or in such a manner that the rebound of the
ball is affected.
4.4 Player Impact. The walls may deflect
under the impact of players if it is necessary for their structural
integrity that they should do so. The amount of any such deflection
shall not exceed the appropriate limit specified below following an
impact equivalent to that of a human body with a mass of 200 pounds
and a coefficient of absorption of 47%, traveling at the moment of
impact at a speed of 10 feet per second and striking the wall at right
angles to it over an area of not more than 5.4 square feet at a height
to the center of the impact area of 4.8 feet (plus or minus 2 inches)
in the middle third of any panel on the wall or, in case of a wall of
homogenous construction over the whole of its area, in the middle
third of the wall: a. in the case of glass walls: 1¼ inch at the
center of the impact area; b. in the case of all other walls: ¼
inch at the center of the impact area.
4.5 Return. Any wall which deflects as
allowed by section 4.4 shall return to its original static position
within one second of the initial impact and shall suffer no temporary
or permanent damage as a result of the deflection.
4.6 Wall Finishes. All playing walls of
the court shall have a hard smooth finish.
4.7 Color of Court Walls. All playing
surfaces of the court are recommended to be of the same color and
reflectance unless glass is used. If the back wall is a solid wall, it
shall be of the same color and reflectance as the front and side
walls.
4.8 Reflectance of Walls. The average
reflectance of the front and side walls shall not be less than 80% at
any point when in a clean condition.
4.9 Ball Rebound from the Court Walls. The
ball shall rebound true on striking all parts of the playing walls.
The ball rebound shall be consistent over the whole area of each wall.
4.10 Joints in Playing Surfaces. Any
open joint in the finish of a wall for panel construction shall: a.
not deflect the rebound of the ball in any way; b. not be larger than
3/32 inch in the plane of the wall surface; and c. be constructed in
such a manner as to ensure that adjacent areas of the finish cannot
move relative to one another at right angles to the plane of the wall
following the impact of the ball, a racquet, or a player, except in
the case of doors in glass walls as allowed by paragraph 37 of this
specification.
4.11 Flank Wall Panels (Optional). The
plane of the side walls of the court can be extended behind a glass
back wall for a distance of not less than 12 inches and to a height of
not less than 8 feet above finished floor level inside the court by
means of fixed or moveable panels of the same color and texture as the
side walls of the court.
4.12 Wall to Wall and Wall to Ceiling
Junctions. There shall be no protrusions of any kind into the
court at the junction of one wall with another, other than a caulking
bead having the same color as the court walls and ceiling for
aesthetic appearance.
4.13 Wall to Floor Junctions. There
shall be no protrusions of any kind into the court at the junction of
any wall of the court with the floor. An expansion joint may be
provided at the junction of any wall of the court with the floor but
is recommended not to exceed 5/8 inch of any dimension or any point.
|
SECTION FIVE: THE DOOR
|
- [top of page]
- 5.1 Position of the Door
- 5.2 Inside Surface of the Door
- 5.3 Characteristics
- 5.4 Size of Door
- 5.5 Finger Traps within Glass Doors
- 5.6 Deflection
5.1 Position of the Door. The door to
the court is recommended to be located in the center of the back wall
and shall open into the court. It shall be installed in accordance
with sections 5.3 and 5.4.
5.2 Inside Surface of the Door. The
inside surface of the door shall be plane and shall be flush with the
adjacent wall surfaces when the door is closed. It shall be fitted
with a flush handle and a restraining device which shall stop the door
from hitting the court walls when opened.
5.3 Characteristics. The door shall match
the color, texture, and ball rebound characteristics of the adjacent
wall surfaces as closely as possible and shall be fitted with a latch
or other mechanism which will prevent the door from opening following
the impact of a player with it on the court side. a. An aluminum frame
around the white door on the court side is permissible.
5.4 Size of Door. The door shall be not
more than 3 feet 6 inches wide and 7 feet high.
5.5 Finger Traps with Glass Doors. Glass
doors must be of sufficient strength to remain intact following
testing as described in the CPSC-16 CFR Part 1201. [Online references:
Consumer Products Safety Commission;
Code
of Federal Regulations, Part 1201 -- this is a high-traffic,
government reference site, and may take several tries to access.]
5.6 Deflection. The door, when struck as
described above, shall not deflect more than: a. the thickness of the
glass plus 1/16 inch at an impact velocity of 10 feet per second; and
b. the thickness of the glass plus ½ inch at an impact velocity
of 15 feet per second. c. stacked glass to be heat soaked. |
SECTION SIX: THE FLOOR OF THE COURT
|
6.1 The Floor Finish. The floor finish
is recommended to be hard, smooth, and have a degree of resiliency and
provide a firm footing and normal play. a. The floor is to be sanded
and finished with polyurethane. Playing on bare wood or sanded wood is
not acceptable.
6.2 Resilience. The bounce of the ball
shall be of solid sound, even height and pace over the entire area of
the floor. When viewed from vertically above the line of flight of the
ball, the linear path of the ball shall not be affected when it
bounces on the floor.
6.3 Color and Reflectance. The floor is
recommended to be light and relatively consistent in color as not to
hide the appearance of the ball during low shots. Bleaching the
hardwood white before applying the finish is allowed if the courts are
to be used under television broadcast conditions. |
SECTION SEVEN: LIGHTING
|
7.1 Lighting Installation. The courts
shall be lit by artificial lighting. It is recommended a minimum of
100 foot candles consistent over the entire court area measured 3 feet
above the court floor + 10% be used. a. Where side wall glass
exhibition courts are built, 150 foot candles is recommended. b. The
walls of the court shall be lit in such a way as to appear evenly and
uniformly illuminated. c. The lighting shall be shadow-free and free
from any stroboscopic effects. The fixtures should be installed flush
and be a playable surface having similar ceiling rebound qualities.
7.2 Glass Walls. In courts with clear
glass walls, the level of illumination is recommended to be the same
on both sides of the wall.
7.3 Television Lighting. Television
lighting maybe installed temporarily or permanently but in either case
it shall comply with all specifications in Section
Seven: Lighting (inclusive) above, except that the level of
illumination provided for television is recommended to be at least 150
foot candles at 3 feet above finished floor level. |
SECTION EIGHT: ENVIRONMENT
|
- [top of page]
- 8.1 Condensation
- 8.2 Location of Grilles & Other
Equipment
- 8.3 Cut-outs
- 8.4 Acoustical Material
- 8.5 Storage boxes
- 8.6 Surfaces behind Glass Walls
8.1 Condensation. The court walls and
floor shall be constructed, insulated, heated, and/or ventilated in
such a way as to ensure that they remain free of condensation when the
court and any adjacent spectator area is in use. Humidity is
recommended to be controlled between 40 and 60 degrees.
8.2 Location of Grilles and Other Equipment.
It is recommended that the location for heating or ventilation ducts
shall be in the ceiling at least 24 feet back from the front wall.
8.3 Cut-outs in upper rear corner of side
walls are acceptable 8 feet x 8 feet maximum size.
8.4 Acoustical material can be installed
in the back 16 feet maximum of the ceiling if desired. This material
must withstand ball strikes and stay in place. The remaining front
part of the ceiling is recommended to be the same surface material as
the wall surface.
8.5 Storage boxes are to be positioned
next to doors in the rear walls. Alternate location, shall be on the
side wall approximately 20 feet from the back wall. Height should be 4
feet from the finished floor to the bottom of the storage box. The box
should be a playable surface and flush to the court walls.
8.6 Surfaces behind glass walls. All
surfaces behind a glass wall which will be seen by a player looking
downwards at an angle of 55 degrees below the horizontal from an eye
height of 60 inches and from a position 12 inches inside the court
shall not be darker in color or tone than the floor of the court. |
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