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Surfacing Requirements and Impact Attenuation Testing Flashcards

6 cards from real CPSI practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.

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  1. What is the maximum allowable g-max value for playground protective surfacing under ASTM F1292?

    Answer: 200 g

    ASTM F1292 specifies that protective surfacing must produce a g-max value of 200 g or less when tested at the critical fall height of the equipment to be considered safe.

  2. What does HIC stand for in the context of playground surfacing testing?

    Answer: Head Injury Criterion

    HIC stands for Head Injury Criterion, a biomechanical measure used in ASTM F1292 testing to assess the potential for serious head injury from a fall onto a surface.

  3. According to CPSC guidelines, what minimum depth of engineered wood fiber (EWF) is required to provide fall protection at a fall height of 10 feet?

    Answer: 12 inches (30 cm)

    CPSC guidelines recommend a minimum depth of 12 inches of engineered wood fiber to provide adequate impact attenuation for a fall height of 10 feet.

  4. When testing surfacing in the field using the ASTM F3012 method, what condition of the surfacing should the inspector attempt to replicate?

    Answer: The worst-case in-use conditions, including areas of maximum compaction and displacement

    Field testing should target the worst-case in-use conditions — areas of maximum compaction, displacement, or degradation — to ensure the surfacing provides adequate protection under the most challenging real-world conditions.

  5. What is the primary maintenance action required to keep loose-fill surfacing performing adequately over time?

    Answer: Regular raking to redistribute displaced material and periodic replenishment to maintain depth

    Regular raking redistributes material displaced by heavy use back under equipment, and periodic replenishment restores depth lost to displacement and decomposition, maintaining the required impact attenuation depth.

  6. Which factor is most likely to cause engineered wood fiber to FAIL an impact attenuation test unexpectedly?

    Answer: Excessive moisture causing the material to clump and compact, reducing its shock-absorbing capability

    Excessive moisture causes engineered wood fiber to clump and compact, significantly reducing the void space between fibers that provides shock absorption, potentially causing the material to fail impact attenuation testing.