When working on a flat roof, several safety precautions and regulations must be followed to ensure the safety of all workers involved. Here are some key safety requirements and practical advice based on the provided documents:

1. Fall Protection: Ensure that all employees working on a flat roof are protected from falls. This can be achieved by using guardrail systems, safety net systems, or personal fall arrest systems. For low-slope roofs, a combination of a warning line system and a safety monitoring system can be used, especially if the roof is 50 feet or less in width [1].

2. Warning Lines: Install warning lines at least 2 meters from the unguarded edge of the roof. These lines should be clearly marked and supported to remain taut [2].

3. Safety Monitors: If a safety monitor is used, they must be experienced, trained, and have complete authority over the work related to fall prevention. They should not engage in other duties while monitoring and must be able to communicate effectively with workers [3].

4. Material Placement: Ensure that roofing materials are stored at least 2 meters from the roof edge and that their weight is uniformly distributed to prevent overloading any part of the roof [4].

5. Lighting and Housekeeping: Adequate lighting must be provided to ensure safe working conditions, and the work site should be kept clean to prevent slips and trips [4].

6. Weather Conditions: Be mindful of weather conditions that could affect safety, such as high winds or rain, which can make surfaces slippery and increase the risk of falls.

By adhering to these guidelines, you can significantly reduce the risk of accidents and ensure a safer working environment on flat roofs.