If you have a ladder in a manhole or enclosure, the ladders must be fixed and corrosion resistant. Which option correctly states this requirement?

• A. Ladders may be removable and painted
• B. Ladders must be fixed and corrosion resistant
• C. Ladders can be wooden or metal with no corrosion requirement
• D. Ladders must be fixed and non-corrosive to water only

Answer: (B)

Ladders in manholes or enclosures must be fixed and corrosion resistant to ensure safe, reliable access in a harsh, damp environment. Being fixed means the ladder stays securely in place during entry and exit, preventing unexpected movement or detachment that could cause a fall. Corrosion resistance is crucial because underground and wet conditions expose ladders to moisture, chemicals, and other corrosives that can weaken metal and shorten the ladder’s life. Painted ladders don’t guarantee protection against corrosion, and removable ladders introduce a risk of movement or loss during use. A ladder that’s fixed and corrosion resistant provides durable, stable access, which is why that is the correct requirement.