Final answer:
To ensure safety when working on a roof without guardrails, it is important to keep materials and equipment at least 6 feet away from the roof edge, be mindful of one's surroundings, and prevent any objects from being dropped into areas where they could cause harm.
Step-by-step explanation:
When working on a roof without the use of guardrails, you should avoid storing materials and equipment within 6 feet of a roof edge. This safety measure is designed to reduce the risk of materials or equipment being inadvertently knocked or blown over the edge, leading to injuries, property damage, or endangering people below. To stay a safe distance from the edge, one must be mindful of their surroundings and ensure that they do not lean over the railing too far. Additionally, caution should be taken to make sure that dropping objects will not cause damage to areas where people or vehicles might be passing.