Practice Test Geeks(CFB) Certified Field Builder Practice Test
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Materials Selection Flashcards

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

Read the first 7 Materials Selection flashcards as text

  1. A field builder is selecting materials for a multi-sport synthetic turf field that will host both soccer and field hockey. Which infill type best supports both sports' requirements?

    Answer: Sand/rubber blend at specified depth

    A sand/rubber blend infill at the correct depth can be tuned to meet both FIFA football and FIH field hockey ball roll and player traction specifications.

  2. What is the primary reason limestone is NOT recommended as base aggregate for synthetic turf fields in regions with high rainfall?

    Answer: It dissolves and degrades in acidic rainwater over time

    Limestone is a carbonate rock that can dissolve and break down in acidic rainwater, leading to base settlement and surface irregularities over time.

  3. Which factor most affects the longevity of synthetic turf fiber when evaluating UV resistance specifications?

    Answer: UV stabilizer type and concentration

    The type and concentration of UV stabilizers (such as HALS) incorporated into the fiber polymer directly determines long-term UV resistance and fiber lifespan.

  4. A field builder is specifying edging for a synthetic turf field with significant freeze-thaw cycling. What edge restraint material is most appropriate?

    Answer: Concrete curb or anchor

    Concrete curb or concrete anchor systems are most resistant to frost heave and dimensional change from freeze-thaw cycling, maintaining edge integrity.

  5. When specifying infill depth for a synthetic turf field, what is the generally accepted minimum depth of infill below the fiber tip?

    Answer: At least 10 mm below the fiber tip

    Industry standards generally require infill to be installed at least 10 mm (approximately ⅜ inch) below the fiber tip to allow fibers to perform properly and provide surface resilience.

  6. What distinguishes a Class I from a Class II recycled crumb rubber product when selecting infill for a synthetic turf field?

    Answer: Class I is cryogenically ground; Class II is ambient ground

    Class I crumb rubber is produced by cryogenic grinding (frozen fracture), while Class II is produced by ambient temperature grinding, resulting in different particle shapes and surface areas.

  7. A Certified Field Builder is reviewing material submittals for a new synthetic turf project. Which document should be requested to verify that turf fiber meets heavy metal content limits?

    Answer: Material Safety Data Sheet (SDS) and third-party test report

    A Material Safety Data Sheet (SDS) combined with a third-party laboratory test report provides verified data on heavy metal content in synthetic turf fibers.