Maple Flooring Manufacturers Association, Inc. - MFMA PUR Standards

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MFMA PUR Standards Introducing the MFMA PUR Standards - Performance and Uniformity Rating Since 1897, the members of the MFMA have been dedicated to producing the highest quality...


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Maple Flooring Manufacturers Association, Inc.
One Parkview Plaza
Suite 800
Oakbrook Terrace, IL 60181
Tel: (888) 480-9138
Fax: (847) 686-2253

mfma@maplefloor.org

http://www.maplefloor.org

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MFMA PUR Standards

Introducing the MFMA PUR Standards - Performance and Uniformity Rating

Since 1897, the members of the MFMA have been dedicated to producing the highest quality northern hard maple flooring and sports flooring systems in the world. More than 100 years later, the MFMA continues to attract new members who subscribe to the same high standards for which the association has become known. Through consistent enforcement of strict manufacturing, grading, packaging, shipping and installation, MFMA has become synonymous with quality. As the most recognized name in sports flooring, the experience of MFMA Mill Manufacturer and Sports Floor Contractor members is unmatched.

Within the last 20 years, there has been a movement within the industry to quantify performance characteristics that best define “a good sports floor.” As a result, our industry has hundreds of different sports flooring systems each with varying levels of performance. Within this range of system options, there are some common performance characteristics that the industry has recognized as being most desired and important.

MFMA’s PUR Standards focus on shock absorption, vertical deflection, area of deflection, ball bounce and surface friction. These standards have been designed, utilizing exacting testing methodologies, to ensure that customers receive a reliable, well-performing, competitive sports surface.

No one knows more about how a good floor should perform and how it should be installed than the MFMA members. As an organization representing the worldwide sports flooring industry, our goal is to balance technical standards with practical flooring system design in order to create uniform standards of performance for competition sports floors.

When a specific flooring system is a MFMA PUR Compliant floor, it is understood that testing is on a strict pass/fail evaluation. In order to minimize confusion that exists around floor testing, the MFMA will only allow the use of the term “compliant” as it pertains to its PUR testing; either a floor is compliant and passes the standards or it does not.

Like all performance standards, there are tradeoffs between individual standards depending on the intended use. Carefully selected criteria will help you choose the characteristics that are most appropriate for the activities being performed on your floor.

For additional information on MFMA testing procedures, contact MFMA Headquarters or any of the MFMA Mill Manufacturing members on their system(s) that have been tested in accordance with the MFMA PUR Standards.


MFMA PUR Standards


Individual Performance Characteristics

MFMA’s PUR Standards focus on shock absorption, vertical deflection, area of deflection, ball bounce, and surface friction. These standards have been designed, utilizing exacting testing methodologies, to ensure that customers receive a reliable, well performing, competitive sports surface. No one knows more about how a good floor should perform and how it should be installed than the MFMA members. As an organization representing the worldwide sports flooring industry, our goal is to balance technical standards with practical flooring system design in order to create uniform standards of performance for competition sports floors.


MFMA PUR Standards

Shock Absorption

Measures the flooring system’s ability to absorb impact forces generated by the athlete

As an athlete impacts a sports surface, the impacting force is translated into two resultant forces: one absorbed by the floor and the other absorbed by 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, MFMA sports floor systems absorb these impact forces (shock) and are rated by the percentage of force reduction they provide as compared to hard surfaces. In general, a sports floor with a force reduction value of 60% will absorb 60% of the impact force and the remaining 40% is absorbed by the athlete.


MFMA PUR Standards

Area of Deflection

Measures the floor system’s ability to contain the deflected area under an athlete’s impact, measured at 20” (500 mm) from the point of impact.

The area of deflection is a measurement of the surface of the floor that is deflected during impact. Area of deflection is based on the relationship between vertical deflection at the point of impact and the deflection at 20” (500 mm). A person jumping on a trampoline, for example, creates a very wide area of deflection. Someone jumping on sand creates a very limited area of deflection.


MFMA PUR Standards

Vertical Deflection

Measures the floor system’s downward movement during the impact of an athlete landing on the surface.

This characteristic is the measure of the floor system’s ability to provide vertical displacement at the point of impact. For example, a person jumping on a concrete floor would result in zero vertical deflection, while that same person jumping on a trampoline would create a vertical deflection of many inches


MFMA PUR Standards

Basketball Rebound

Measures the basketball’s rebound response off the sports floor system as compared to the ball’s rebound response off concrete.

At 100% rebound, the basketball returns to a height equal to its rebound off concrete. Obviously, ball bounce may not apply to all sports activities.


MFMA PUR Standards

Surface Friction

Measures an athletic flooring finish’s ability to control the sliding of athletes on a sports surface.

The surface friction must be low enough to permit sliding when a large amount of horizontal force is applied to the floor surface and high enough to prevent uncontrollable sliding.

Surface friction is a function of the specified floor finish.


Performance Requirements

Why Is Performance Important ?

The MFMA Mill Manufacturing Members have been designing sports floor systems for generations. With the evolution of the understanding of the scientific relationship between the athlete and the sports surface, MFMA Mill Manufacturing Members have engineered flooring systems to meet the demands of today’s athletes. These standards reflect the competitive nature of today’s athletes and provide them with the tools to succeed.


MFMA PUR Standards

Shock Absorption

50% minimum average

Shock absorption measures the ability of a system to reduce impact forces felt by the athlete.


MFMA PUR Standards

Area of Deflection

20% maximum at all test points

Measures a floor systems ability to isolate movement of an athlete’s impact.


MFMA PUR Standards

Basketball Rebound

93% minimum average

Measures the basketball response off a floor system.


MFMA PUR Standards

Vertical Deflection

2.3 mm minimum average

Measures a floor systems ability to yield under foot during game play activities.


MFMA PUR Standards

Surface Friction

0.6 minimum

Measures the slip slide characteristics of a finished floor system.


Uniformity Requirements

Why Is Uniformity Important ?

The MFMA, the sports flooring authority for over 100 years, recognizes the importance of a sports surface’s uniformity and consistent game play for a high quality floor. Therefore we have established the following uniformity requirements.


MFMA PUR Standards

Shock Absorption

+/- 5%

Uniformity of shock absorption provides consistent dissipation of force by the floor system assuring uniform reduction of impact forces encountered by athletes.


MFMA PUR Standards

Area of Deflection

≤ 20%

Uniformity in Area of Deflection ensures the same isolation of movement from one athlete to another at all locations.


MFMA PUR Standards

Basketball Rebound

+/- 3%

Requiring Basketball rebound consistency assures even ball return throughout the floor system.


MFMA PUR Standards

Vertical Deflection

+/- 0.5mm

Uniformity in Vertical Deflection assures player confidence in predictable response to an athlete’s movement on the floor system.


MFMA PUR Standards

Surface Friction

+/- 0.1

Uniformity of surface friction is vital to the safety of the athletes.


ASTM Performance Test Methods

The MFMA PUR Standards utilize ASTM Test Standards when testing the performance and uniformity of a maple sport floor.

For additional information on MFMA testing procedures, contact MFMA Headquarters or any of the MFMA Mill Manufacturing members on their system(s) that have been tested in accordance with the MFMA PUR Standards.


MFMA PUR Standards

Shock Absorption

ASTM F2569-07

Using a test device, a series of 3 drops is made on each test point. A 40 lb weight is dropped onto a stiff spring over a load cell that is connected to a solid foot. The weight is dropped from a set height and strikes the top of the stiff spring/load cell/solid foot which is set onto the floor surface. The load cell receives the impact and transfers the impulse to a computer. It is then processed onto a percentage of what the same impact would have on concrete.


MFMA PUR Standards

Area of Deflection

ASTM F2157-09

Areas of deflection shall be evaluated in four axis directions (0°/90°/180°/270°) extending from each test point a distance of 500mm (19.7"). Calculate percentage comparison of average deflection at each axis point as compared to average deflection simultaneously occurring at test point when conducting ASTM F2157-09 for Vertical Deflection.


MFMA PUR Standards

Vertical Deflection

ASTM F2157-09

Standard Specification for Synthetic Running Tracks shall be used to determine MFMA PUR compliance. The distance between the drop weight and top of the spring shall be adjusted to 120 ± 0.25mm as stated in the test method.


MFMA PUR Standards

Basketball Rebound

ASTM F2117-10

Standard Test Method for Vertical Rebound Characteristics of Sports Surface/Ball Systems; Acoustical Measurements shall be used to determine MFMA PUR compliance.


MFMA PUR Standards

Surface Friction

ASTM D 2047

Since this is really a function of the particular floor finish applied to the sport flooring surface this test involves the floor finish product applied to three 9 x 9 inch maple panels instead of the actual test floor. Using the James Machine, run 4 cycles on each panel, turning the panel 90° after each cycle. The surface friction value is determined by averaging the values of all 12 cycles.

Maple Flooring Manufacturers Association, Inc.
One Parkview Plaza
Suite 800
Oakbrook Terrace, IL 60181
Tel: (888) 480-9138
Fax: (847) 686-2253
E-mail: mfma@maplefloor.org
Web site: http://www.maplefloor.org





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