Is corrosion resistance required for a fixed ladder in a manhole or enclosure?

Corrosion resistance is indeed required for a fixed ladder in a manhole or enclosure, making the appropriate response affirmative. This requirement is crucial because fixed ladders often face harsh environments, including moisture and potential exposure to various corrosive materials, especially in manholes that may contain wastewater or other substances that could lead to rust and degradation over time.

Safety standards, including provisions from the National Electrical Code (NEC), aim to ensure that all electrical installations, which may include access points like vertical ladders, are safe for use and can withstand environmental factors that could compromise integrity. In the case of ladders located in potentially corrosive settings, using materials with corrosion resistance helps enhance safety and longevity, reducing maintenance needs and the risk of failure.

While certain areas may have specific stipulations—such as coastal areas where salt and humidity can accelerate rusting—this does not negate the basic requirement for corrosion resistance wherever ladders are installed in potentially corrosive environments. Therefore, acknowledging the need for corrosion resistance applies broadly rather than being limited to specific materials or locations.