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Maple Sports Floors differ
immensely from floors designs for any other purpose. Because the needs
of athletes come first, performance, safety and comfort inherent
characteristics. Floor design can focus on a specific activity such
as: Aerobics versus basketball, or handball, squash and racquet ball
courts; health and fitness clubs; gymnasiums used for multi-purposes;
international Olympic facilities; professional sports arenas; dance
floors; auditorium and convention centers; schools, colleges, and
universities; YMCA/YWCA's; theater & stage performance areas; and
many commercial, industrial, and residential applications.

Time and time again, athletes, performers, trainers, coaches, owners,
and architects who design these facilities cite maple as the preferred
sports surface. Of all the US sports floors ( 17 million square
feet-installed each year) maple is the sports floor of choice.
Athletic performance is
enhanced by its hard-but-resilient character. Subfloor systems enhance
maple's natural shock absorption and area elasticity. In addition to
the surface providing dependable uniform grip and traction to athletic
footwear. safety is vastly enhanced by these same characteristics as
seen by a study showing athletes were 70% more likely to sustain a
floor-related injury on a synthetic floor than on a maple floor. (See
Incidence of Sports Injuries- further down this page)
Maple (Northern Hard) was
used in sports floors more than 150 years ago. From the beginning the
mission was to create "natures perfect flooring". A handful
of producers formed the Maple Manufacturers Association (MFMA) in
1897. The purpose was to research and develop the best procedures for
the selection and grading of this wood product. Over time a set of
strict manufacturing standards evolved. This association would soon
become the authoritative source of technical and general information
on sports floors. They also included in there self-imposed standard,
the correct installation and maintenance procedures to help this
product live up to it's promise and standards previously set forth.
Thus the sports floor story now has become a part of our lives, our
day to day association with sports activities, and thus a part of our
sports history

Grading Rules &
Quality Standards:
As the trade association
setting the standard (MFMA) has set painstakingly set forth and
followed grading rules and quality standards in the production of each
strip of flooring. It assures the wood has been kiln dried to 6% - 9%
moisture content which makes it dimensionally stable before
manufacturing begins. This ensures the finished product will be milled
to consistent exact tolerances as mandated by this organization (MFMA).
Grading Guide:

First
Grade:
The highest grade - an extremely durable and desirable floor for many
installation applications; including but not limited to gymnasiums,
basketball, handball, and racquet ball courts among other common uses
such as public areas, dance floors, home and many other applications
where fine appearance and long wear are desired. The face is
practically defect free. Strip lengths 9" to 8 ft.; not more than
55% of total footage will be in bundles under 4 ft.; not more than 25%
will be in 2 ft. bundles.

Second & Better Grade:
this grade provides the same long life and maintenance performance as
First grade. It is ideal for sports floors, common areas, commercial
buildings and residences. This grade admits tight knots and slight
imperfections. Bundling tolerances are slightly less as to what is
allowed as to lengths.

Third Grade:
excellent performances for all types of installation and kindred uses
where good wearing qualities are required together with medium cost
and appearance. Again more tolerance as to bundling and nesting is
given.
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Standard Measurements
(Tongue and Groove Flooring)
Thicknesses:
25/32" 1.984 cm (19.84mm)
33/32" 2.619 cm (26.19mm)
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Face Widths:
1-1/2" 3.81 cm (38.1mm)
2-1/4" 5.715cm (57.15mm)
3-1/4" 8.255cm (82.55mm)
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NOTE: The
25/32" thickness is the most commonly used for general purposes
with strip lengths being random from 9" top 8 feet.
 PERFORMANCE
CHARACTERISTICS:
(DIN Standards- Developed by the University of Stuttgart in Stuttgart,
Germany- Using the "Artificial Athlete Berlin" apparatus
which simulated the response of a typical participant's interaction
with a sports surface with the objective to develop test methods and
standards.)
Performance
characteristics for floors. . . shock absorption, ball bounce,
vertical and area deflection, surface friction and rolling load have
been engineered into flooring systems for years. Today more emphasis
is placed on specific performance characteristics, which can be
measured by generally accepted methods and numbers.

Shock Absorption:
As an athlete impacts a sports surface the impacting force is
translated into two resultant forces, one absorbed by the floor, the
other returned to the athlete. While hard surfaces such as concrete
and asphalt provide little or no force reduction for the athlete upon
impact, due to running, jumping or falling. Sports floor systems (MFMA
systems) absorb these impact forces (shock) and are rated by the
percentage of force reduction they provide as compared to hard
surfaces. Shock absorption should be considered for any sports floor
installation.
Vertical and Area
Deflection:
The measurements of both area and vertical deflection are
interdependent. The two together form a criterion for determining the
total stability of the floor in the total scheme of performance
characteristics. This is called deformation control. This
characteristic is a measure of the systems ability to provide vertical
deflection for athletes performing in close proximity to each other.
Vertical deflection deals with vertical displacement of the flooring
surface during impact.

Ball Bounce:
This measurement of a basketball's response reflecting (rebounding)
off a (MFMA) maple floor system as compared to its response of a hard
surface such as concrete is referred to ball bounce. At 100% rebound,
the basketball reflects to a height equal to its response off
concrete. This may not apply to all sports activities.
Surface Friction:
Often called Sliding coefficient or the coefficient of friction, this
characteristic is used to measure the floor's ability to control
sliding of athletes on its surface. In other words the sports floor
system must have a high surface friction , enough that prevents
premature and uncontrollable sliding of athletes, but also low enough
to permit sliding if an extreme force is exerted on the athlete such
as that caused by two athletes colliding. Surface friction is a direct
function of the finish on the surface and carries equal importance in
all activities.
Rolling Load:
Due to the potential damage to a wood floor system caused by some
maintenance machines and game equipment to rolling load characteristic
is very important to all sports floors. The pressure of rolling loads
caused by rolling equipment and furniture (bleachers, backstops, high
lifts etc.) should always be considered. Additional provisions to
protect the floor should be considered.
Common Sports Floors: Basketball (NBA-NCAA-International Olympic-High School)
Volleyball Racquet Ball Handball Squash Badminton Shuffleboard

Incidence of Sports
Injuries:
This has become an important issue in sports floors. It is evident
that from research conducted to date by leading authorities concerning
injuries on sports floors, that more injuries occur on synthetic floor
surfaces than does on maple wood floors. The following information
concerning injuries is from a study comparing maple wood floors to
synthetic floors. This study covered injuries reported for 1 year,
type of sport, and the type of injury. Injuries that were attributed
to contact with the floor are used (floor-related).
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Type of
injuries recorded:
S=synthetic floor~M=maple floor
Ankle- 20-M vs 30-S
Knee- 7-M vs 15-S
Skin/Misc 11-M vs 17-S |
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It is important to note, these injuries occurred in the following
activities: basketball 45%, volleyball 28%, practice & other
sports 20%, PE class 7 %, with the majority of injuries occurring
during the winter months(75%) with male injuries being about 55% of
the total number.
Potions of information
contained herein was reprint by permission MFMA
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