Extension Ladders
We use ladders to do all sorts of tasks, so it's not surprising that many types of ladders are available.
Extension ladder is extended 3 feet above landing as required.
Let's look at the most common types. Characteristics of extension ladders include:
- They offer the most length in a general-purpose ladder.
- They have two or more adjustable sections.
- The sliding upper section must be on top of the lower section.
- They are made of wood, metal, or fiberglass.
- The maximum length of extension depends on material.
- They support only one worker.
Knowledge Check Choose the best answer for the question.
1-4. Which type of ladder offers the most length for general purpose jobs?
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