What is ASTM critical fall height ?

ASTM critical fall height is a critical concept in the realm of playground safety. It refers to the maximum height from which a child can fall onto a protective surface without sustaining serious head injury. The definition of ASTM critical fall height is important for playground designers, manufacturers, and operators to ensure the safety of children.

ASTM conduct rigorous testing to determine the critical fall height. During the testing process, an instrumented headform, designed to simulate a child's head, is dropped from varying heights onto the protective surface. Sensors within the headform measure the impact forces experienced during each drop. The critical fall height is then identified as the maximum height at which the recorded impact forces are deemed safe for a child's head.

By understanding and adhering to ASTM critical fall height guidelines, potential head injuries can be significantly reduced. It is crucial for playground equipment and surfacing materials to meet or exceed the recommended critical fall height. Surfaces like engineered wood fiber, rubber tiles, or synthetic turf can be installed to create an appropriate cushioning effect. Structures with a lower fall height can be located on natural grass, which provides a softer landing surface.

In conclusion, ASTM critical fall height is an essential concept in playground safety. It ensures that playground equipment and surfacing materials are safe for children. By following the guidelines, playground designers, manufacturers, and operators can create playgrounds that are safe and enjoyable for children.