Abstract： AS 4422:2016 pdf download.Playground surfacing-Specifications,requirements and test method. 1.4.9 Impact-attenuating surfacing (LAS) A surface, whereby the kinetic energy of an impact is dissipated by localized elastic hysteresis. deformati...

AS 4422:2016 pdf download.Playground surfacing-Specifications,requirements and test method.

1.4.9 Impact-attenuating surfacing (LAS)

A surface, whereby the kinetic energy of an impact is dissipated by localized elastic hysteresis. deformation or displacement such that the maximum acceleration and HIC is reduced and the [IIC duration is increased.

1.4.10 Impact attenuation

Property whereby the kinetic energy of an impact is dissipated by localized elastic hysteresis. deformation or displacement.

1.4.11 Impact measurement

The IIIC value from the recorded acceleration of the missile falling from one fall height

onto one test position.

1.4.12 Loose-fill surface

Surfacing material supplied for the purpose of impact attenuation in playgrounds. consisting of unbound, granular, chipped or

fibrous elements such as sand, wood-fibre, bark mulch, wood chips or other materials. These may be organic or inorganic.

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