Interim Standard
Track updates
AS 4422 (Int):2022
[Current]Playground surfacing — Specifications, requirements and test method
AS 4422 (Int):2022 provides a test method to measure conformance with thresholds that if exceeded are more likely to lead to death associated with brain injury resulting from a fall or impact onto surfaces.
Published: 25/11/2022
Pages: 16
Table of contents
Cited references
Content history
Table of contents
Header
About this publication
Preface
Introduction
1 Scope
1.1 Scope
1.2 Application
1.3 Normative references
1.4 Terms and definitions
2 Safety requirements
2.1 Testing principle
2.2 Test apparatus
2.2.1 Test rig
2.2.1.1 General
2.2.1.2 Missile and accelerometer
2.2.1.3 Release system
2.2.1.4 Guidance system
2.2.1.5 Length measuring equipment
2.2.1.6 Velocity measuring equipment
2.2.2 Impact measuring equipment
2.2.2.1 General
2.2.2.2 Accelerometer measurement system
2.2.2.3 Recording device
2.2.2.4 Program for calculating the HIC value
2.3 Accuracy of tests
2.3.1 Calibration measuring device
2.3.2 Calibration criteria
2.4 Critical fall height testing
2.4.1 General
2.4.2 Test location
2.4.3 Temperature
2.4.4 Effects of moisture
2.4.5 Time/acceleration trace
2.4.6 Material type
2.4.6.1 Loose-fill (particulate) materials
2.4.6.2 Tiles (manufactured prior to installation)
2.4.6.3 Unitary surfaces intended to be manufactured on-site
2.4.6.4 Unitary surfaces consisting of multiple layers
2.4.7 Procedure laboratory and field
2.4.7.1 General
2.4.7.2 Testing procedure for unitary surfacing products
2.4.7.3 Testing procedure for loose-fill (particulate) materials
2.4.7.4 Selection of data for determination of hc
2.4.7.5 Calculation of hc
2.4.7.6 Calculation of gmax
2.4.7.7 Calculation of HIC
2.4.7.8 Calculation of HIC duration
2.5 On-site testing
2.5.1 General
2.5.2 Test location
2.5.2.1 General
2.5.2.2 Criterion for selection of the points to be tested
2.5.3 Operating conditions
2.5.4 Procedures
2.5.4.1 Testing procedure for unitary surfaces
2.5.4.2 Testing procedure for loose-fill (particulate) material surfaces
2.5.4.3 Testing points that fail to meet the required impact-attenuating criteria
2.6 Test report
2.6.1 Tests carried out in a laboratory
2.6.2 Tests carried out on-site
Appendix A
Appendix B
Cited references in this standard
AS 4685 (series)
Playground equipment and surfacing
[Current]
Methods for sampling and testing aggregates, Method 3.1: Sampling — Aggregates
[Current]
General requirements for the competence of testing and calibration laboratories
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