Final answer:
If materials are piled above toeboard height, additional guardrails are needed to extend the protective barrier from the working surface to the top rail, ensuring safety by preventing objects from falling.
Step-by-step explanation:
If you were to pile up materials and/or tools above the height of a toeboard, you will need additional guardrails to connect from the working/walking surface to the top of either the mid or top rail. When engaging in an activity where there is a risk of dropping objects from a height, it is essential to take precautions to protect individuals and property on the levels below. Caution should be exercised to maintain a safe distance from the edge, to avoid leaning too far over railings, and to ensure that no materials are being dropped into areas frequented by people or vehicles.
Furthermore, dropping objects must be done in a manner that does not cause damage. It is crucial to implement safety measures like guardrails, toeboards, or other barriers to prevent materials from falling. In situations where the piled materials exceed the height of a toeboard, installing additional guardrails ensures that there is a continuous protective barrier extending to a height that can prevent materials from falling off the edge.