ASTM F355-16

5.1 The results of this method quantify the impact attenuation of playing surface and system specimens under the specific test conditions.

5.2 The test method measures the outcome of impacts performed under specific conditions. It does not quantify the intrinsic material properties of the tested specimens.

5.3 Test results from different specimens obtained under the same conditions (that is, the same missile mass and geometry, drop height, etc.) are used to compare impact attenuation under those conditions.

5.4 Test results obtained under different conditions are not comparable. Specifically obtained with different missiles are not equivalent and cannot be directly compared. Similarly, test results obtained using the same missile, but using different drop heights, are not directly comparable.

1.1 This test method measures the impact attenuation of surface systems and materials, specifically the peak impact acceleration (“impact shock”) produced under prescribed impact conditions.

1.2 This test method is applicable to natural and artificial surface systems intended to provide impact attenuation, including natural and artificial turf sports fields.

1.3 This test method is applicable to impact attenuating mats and padding used in sports facilities, including stadium wall padding, gymnastic mats, wrestling mats, turf playing systems, pole vault landing systems, playground protective surfacing, and other systems.

1.4 This test method is used to measure the impact attenuation of materials and components used as protective padding on trampoline frames, goal posts, etc., provided the material or component can be tested separately from the equipment to which it is attached.

1.5 Without modifications, this test method shall not be used to test materials and components that are attached to structures or equipment or finished products, unless the impact attenuation of the whole system is of interest.

1.6 While it is widely believed that appropriate impact attenuation can reduce the risk of impact-related injuries, the relationships between the results of this test method and specific injury risk and outcomes have not been determined.

1.7 The values stated in SI units are to be regarded as the standard. The values given in parentheses are for information only.

1.8 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.