In terms of ladder operations, which technique prevents ladder falling when raising it?

Positioning the ladder at a proper angle is critical for ensuring stability and preventing it from falling when it is being raised. The recommended angle for most ground ladders is approximately 75 degrees or a one-to-four ratio of ladder height to the distance from the base of the ladder to the wall or structure it is leaning against. This angle allows for optimal balance and minimizes the risk of the ladder slipping or toppling over during operations.

When the angle is too steep or too shallow, the ladder becomes less stable and more susceptible to falling, especially when weight is applied or if the ladder is moved. Maintaining the correct angle is a fundamental practice that enhances safety and efficiency in ladder operations.

The other techniques listed also contribute to ladder safety but do not specifically address the prevention of the ladder falling during the raising process. For instance, using a safety strap may help secure the ladder once it is in place, while a two-person lift can assist in raising the ladder but does not inherently correct the angle. Securing the base is important for overall stability but primarily comes into play after the ladder is raised. Therefore, proper angling during the initial phase is the key technique for maintaining ladder stability during the raising process.