Extension ladders up to 36 feet high should have a minimum of what distance as overlap between sections when extended?

For extension ladders that are up to 36 feet high, having a minimum of 3 feet of overlap between the sections when extended ensures both safety and stability. This overlap provides additional strength and support, reducing the risk of the ladder sections shifting or separating while in use.

Safety guidelines suggest that the overlap must be enough to maintain structural integrity, especially when supporting the weight of a person and any equipment. An overlap of less than 3 feet may compromise the ladder's performance, making it less secure for the user. In ladder safety training, understanding the importance of proper overlap in ensuring safe operation is essential, which is why the minimum requirement of 3 feet is emphasized for ladders of this height.