When placing a ladder against a structure, what is the maximum distance that the base can be from the supporting structure?

When placing a ladder against a structure, adhering to the proper angle is crucial for safety and stability. The maximum acceptable distance that the base of the ladder can be from the supporting structure is defined by a specific ratio to the height at which the ladder rests against the structure.

The correct choice indicates that the base of the ladder can be at a distance that is one-fourth the height at which the ladder is leaning against the structure. This guideline helps maintain a safe angle for the ladder, generally recommended to be around 75 degrees from the ground, ensuring that it is both stable and secure while in use. This ensures that the ladder does not tip over and provides adequate support for the individual climbing it.

The other options suggest either a greater distance, which could compromise the ladder's stability or an ambiguous limit, neither of which align with established safety standards for ladder usage. Understanding this principle is vital for anyone working with ladders in any capacity, as it directly impacts worker safety.