What does the ground bearing pressure depend on when using an outrigger pad?

The ground bearing pressure when using an outrigger pad is fundamentally influenced by the area of the pad and the weight that is applied to it. This relationship is based on the physics of pressure, which is defined as force (or weight) distributed over an area.

In practical terms, when the outrigger pads are deployed, they spread the load of the crane over a larger surface area. A larger pad area can reduce the pressure exerted on the ground because the same weight is distributed over that greater area. Therefore, as the area of the pad increases, the ground bearing pressure decreases if the weight remains constant, and conversely, if the weight increases while the pad area remains the same, the ground bearing pressure increases.

This is essential for ensuring stability and preventing ground failure when operating cranes, as inadequate ground bearing pressure can lead to sinking or tipping. Understanding this concept is vital for safe crane operation and effective planning on any site where cranes are utilized.