Under what conditions should 6 mil poly extend 20 ft?

The correct response highlights the importance of safety precautions when working with polyethylene sheeting, particularly in elevated or windy environments. When work is performed above the ground floor, there are additional risks concerning safety and structural stability. The use of a 6 mil poly that extends 20 feet is a precautionary measure that ensures adequate coverage and protection from falling debris or weather conditions that could affect the work area or the safety of workers.

Wind can significantly impact the integrity of the poly sheeting, causing it to lift or cause disarray in the work environment. By extending the poly in these conditions, it ensures that the sheeting remains secure, providing a better barrier against dust, debris, and other environmental factors.

In contrast, the other options do not address the specific safety and environmental conditions that warrant such extensions. Working indoors, ensuring no electrical equipment is present, or having fewer personnel do not inherently necessitate the same level of precaution as working above ground or in windy conditions. These factors may influence the overall safety measures taken but do not directly relate to extending the poly sheeting in the same critical way.