What is the recommended distance for the base of an extension ladder from the wall?

The recommended distance for the base of an extension ladder from the wall is based on the principle of maintaining a safe working angle for stability and balance. The guideline of 1 foot for every 4 feet in length provides an effective ratio that helps ensure that the ladder is positioned at an optimal angle, which is typically around 75 degrees relative to the ground. This angle allows for sufficient weight distribution and minimizes the risk of the ladder tipping over or sliding out as a user climbs or works from it.

When following this guideline, if you have a 16-foot ladder, for example, the base should be positioned 4 feet away from the wall. This ratio is widely accepted in safety training and ladder use protocols, making it a reliable method for ensuring safety while using extension ladders.

Using other distance guidelines, such as 2 feet for every 4 feet in length or 1 foot for every 5 feet in length, does not provide a safe angle for ladder use, which could lead to potential hazards while ascending or descending.