What is the proper slope ratio for an extension ladder?

The proper slope ratio for an extension ladder is 1:4, meaning that for every four feet of vertical height, the base of the ladder should be positioned one foot away from the wall or the structure it is leaning against. This angle provides stability and reduces the risk of the ladder slipping or tipping over while in use.

Using this 1:4 slope ratio helps ensure that the ladder is at a safe and effective angle for climbing. A more upright position can make the ladder unstable, while a flatter angle may not support the climber's weight adequately. This is particularly important when considering safety in various climbing situations, as a well-placed ladder is crucial in preventing accidents and falls.

Understanding this ratio is vital for anyone working with ladders, particularly in construction or maintenance roles where extension ladders are commonly employed to reach heights safely.