CDPH Lead Inspector/Assessor California State Practice Exam

What ratio should be used for leaning ladders, and how far should they extend beyond the surface?

1. 3 to 1; at least 2 feet

2. 4 to 1; at least 5 feet

3. 3 to 1; at least 3 feet

4. 4 to 1; at least 8 feet

The correct answer is: 3 to 1; at least 3 feet

The correct answer highlights the importance of ladder safety principles that are essential for preventing accidents while using ladders. The 3 to 1 ratio means that for every three feet of vertical height the ladder reaches, the base of the ladder should be placed one foot away from the structure it is leaning against. This ratio ensures that the ladder remains stable and reduces the risk of it tipping over. Additionally, extending the ladder at least 3 feet above the landing surface provides a secure handhold when transitioning on and off the ladder. This ensures that the user has something to grab onto, which enhances safety during these critical moments. Overall, this combination of ratio and extension height is designed to promote safe practices and minimize the potential for falls and injuries when using ladders in various settings.