These ladders are primarily used to access roofs or other structures for industrial purposes.
In the United States, these ladders are covered by OSHA and ANSI standards.
Fixed ladders consist of the following components: OSHA and ANSI are only applicable for the US market.
Other countries around the world have their own standards which may not be the same.
Fixed ladders are generally made of sturdy materials such as: aluminum or fiberglass, but can also consist of reinforced polymers, stainless steel, hot dipped galvanized steel, or wood.