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Slide 38

    TEXT VERSION OF SLIDE:

    Title: Pump jack
    Type: Text Slide with Image
    Content:

    • Brackets, braces must be fabricated from metal plates and angles
    • Each bracket must have two positive gripping mechanisms
    • Workbench may be used as a top-rail when guardrails used for fall protection
    • Work benches must not be used as scaffold platforms
    • Poles must be secured to structure by rigid triangular bracing, or equivalent
    [Includes illustration of a pump jack scaffold]

    Speaker Notes:

    Pump jacks are a uniquely designed scaffold consisting of a platform supported by moveable brackets on vertical poles. The brackets are designed to be raised and lowered in a manner similar to an automobile jack. Pump jacks are appealing for certain applications because they are easily adjusted to variable heights, and are relatively inexpensive.