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Testing and Assessment

A synthetic turf field can require significantly less maintenance than a natural grass field. But that doesn’t mean maintenance should be ignored. The right testing program can lengthen the life of your turf and provide safety to your players.

Sportworks Design provides a range of testing services that can be conducted after installation and then again in the following years to help evaluate how the field is wearing. Field performance scores can provide a rating system to check how the field is performing and if elements of the field need to be replaced or remediated.

Among the ATSM Standard Tests are:

GMAX Testing

What is GMAX Testing?

“GMAX” Testing or ‘Impact Attenuation’ measures the shock absorption provided by the synthetic turf when impacted by a player’s body, and most importantly, the player’s head. GMAX testing also provides critical data at multiple locations on a field, identifying the stability of the surface as a player runs across it. The test is performed in accordance with ASTM.

Why Should You Perform This Test?

It is recommended that a synthetic turf field be tested for impact attenuation annually. A GMAX test can help detect signs of premature wear, inadequante infill depth, and suggestions for improvements to the maintenance program. Simply put, this test can assist in creating safer field conditions for the athletes. Information from GMAX testing can limit the owner’s liability from potential player injury-related lawsuits.

Drainage Testing

What is Synthetic Turf Field Drainage Testing?

Field Drainage Testing measures the permeability rate of the synthetic turf system and is performed by following ASTM standards. The results are compared to the Synthetic Turf Council performance guidelines for the type of field and/or stone base system being tested.

Why Should You Perform This Test?

Field Drainage Testing should be conducted when the time approaches for the synthetic turf to be replaced. This test provides critical data used to determine how the synthetic turf system and stone base is draining. This will help determine if remediation is required to provide adequate stormwater drainage before new synthetic turf is installed. Knowing this information can help avoid costly change orders and delays during construction.

Ball Roll Testing

What is Ball Roll Testing?

Ball Roll Testing measures how far the ball rolls on synthetic grass compared to natural grass.

The distance the ball rolls is directly related to the speed of the synthetic turf system. The test is performed by following ASTM standards, and the results are compared to the Synthetic Turf Council performance guidelines for the type of field being tested.

Why Should You Perform this Test?

Often times, synthetic turf fibers can begin to “layover” and become compacted, resulting in a longer, faster ball roll than preferred. This test can identify this condition and alert the owner that the field requires better maintenance to avoid worsening the problem or that possibly the field is nearing the end of its life.

What is Vertical Rebound Testing?

Vertical Ball Rebound Testing measures how high the ball bounces when falling vertically onto a synthetic turf field. The test is performed in accordance with ASTM standards, and the results are compared to the Synthetic Turf Council performance guidelines for the type of field being tested.

What Type of Fields Benefit Most from This Test?

Ball Roll and Vertical Rebound Testing is particularly important for soccer, lacrosse, field hockey, baseball, and softball fields, where the ball interacts directly with the synthetic turf.