Which of the following is NOT correct regarding outriggers on soft ground?

• A. Extend fully with level contact on pads
• B. Provide even contact across all pads
• C. Avoid over-extension
• D. Extend outriggers without pads

Answer: (D)

On soft ground, the stability of the crane hinges on how the outriggers contact the surface. They must be extended to full reach with all pads touching and the contact level, so the load is spread evenly across the pads. Ensuring even contact across every pad helps prevent one side from sinking or lifting and keeps the structure from tilting. Extending beyond the designed reach or not achieving level contact reduces stability and can push the limits of the crane’s setup.

The statement about extending outriggers without pads is not correct because pads are essential on soft ground to distribute the crane’s weight over a larger area and to prevent the points of contact from sinking or crushing into the ground. Without pads, the risk of ground failure, uneven support, and tipping increases significantly. If the ground is very soft, mats, cribbing, or other load-distribution materials are used in conjunction with the pads to maintain a stable, level base.