OSHA 30 Hour Construction Program Practice Test

What temperature can heat stress symptoms begin to occur?

1. Above 68°F

2. Above 80°F

3. Above 95°F

4. Above 100°F

The correct answer is: Above 95°F

Heat stress symptoms can begin to occur at temperatures above 95°F. At this temperature, the body struggles to maintain a normal core temperature, particularly when combined with high humidity levels and physical exertion. The risk of heat-related illnesses, such as heat exhaustion and heat stroke, increases significantly as the temperature rises. Understanding that heat stress is influenced not only by temperature but also by factors such as humidity, clothing, and individual health is crucial. The 95°F threshold is significant as it highlights the need for vigilance in monitoring temperature conditions, implementing hydration protocols, and taking appropriate breaks to reduce the risk of heat stress in workers.