What is the minimum angle a ladder should be placed to ensure stability?

The minimum angle a ladder should be placed to ensure stability is typically around 75 degrees. This angle allows for a safe and secure position, reducing the risk of slippage or tipping as the ladder is used.

At this angle, the base of the ladder is positioned far enough from the wall to provide stability while still allowing the firefighter to reach the desired height. A 75-degree angle also helps ensure that the weight and forces exerted on the ladder are evenly distributed, decreasing the likelihood of accidents during operations.

Setting the ladder too steeply, such as at a 60-degree angle, could increase the risk of it tipping backwards, while an angle that is too shallow could compromise stability and grip, making it easy for the ladder to slide or fall. A 90-degree angle, where the ladder is perpendicular to the ground, is not practical for stability and would not allow any safe ascent or descent.