On exterior work, how far from the edge of the work area must caution signs be posted?

On exterior work, how far from the edge of the work area must caution signs be posted?

• A. 20 feet
• B. 6 feet
• C. 10 feet
• D. 30 feet

Answer: (A)

Warning signs should create a safe warning buffer around exterior work so people notice the hazard before reaching the area. Posting caution signs twenty feet from the edge of the work area gives pedestrians enough time to see the warning and steer clear, reducing the risk of stepping into contaminated dust or debris. If the signs are placed too close, such as six or ten feet, people might reach the boundary before they’re alerted. If they’re placed much farther away, like thirty feet, the warning may not effectively alert someone approaching the area in time. So, twenty feet is the appropriate distance to maintain a clear, timely warning for exterior work.

Warning signs should create a safe warning buffer around exterior work so people notice the hazard before reaching the area. Posting caution signs twenty feet from the edge of the work area gives pedestrians enough time to see the warning and steer clear, reducing the risk of stepping into contaminated dust or debris. If the signs are placed too close, such as six or ten feet, people might reach the boundary before they’re alerted. If they’re placed much farther away, like thirty feet, the warning may not effectively alert someone approaching the area in time. So, twenty feet is the appropriate distance to maintain a clear, timely warning for exterior work.