For an extension ladder with a total length up to 32 feet, what is the minimum overlap for the two sections?

• A. 2 ft
• B. 4 ft
• C. 3 ft
• D. 5 ft

Answer: (C)

When you use a two-section extension ladder, the overlap where the upper section sits on the lower one is what keeps the ladder secure and prevents the sections from sliding apart as you climb and apply load. For ladders with a total length up to 32 feet, that overlap must be at least three feet. That amount provides enough contact and space for the locking mechanism to engage properly, so the ladder remains rigid and stable while in use. If the overlap were only two feet, the joint would be less secure and more prone to slipping or buckling under load. Longer overlaps, like four or five feet, would still be safe, but three feet is the minimum required for this size.