What may be required for slopes over 5° when operating digger derricks?

For slopes over 5° when operating digger derricks, cribbing and blocking may be required to ensure stability and safety during operation. When working on steeper inclines, the center of gravity of the equipment can shift, increasing the risk of tipping over. Cribbing involves placing wooden blocks or other materials under the machine to create a stable base, while blocking helps support the load being lifted. This practice is crucial to enhance the stability of the derrick and prevent accidents, thereby safeguarding both the operator and the surrounding area.

Considering the other options, they do not adequately address the safety concerns that arise with operating machinery on inclined surfaces. Simply having no additional requirements would not provide the necessary precautions to counteract the risks associated with steep slopes. Adjusting hydraulic systems might improve performance but would not necessarily ensure stability. Using lighter equipment could reduce some risks, yet it may not be practically feasible or sufficient to eliminate the need for added support on inclines. Therefore, implementing cribbing and blocking is the most effective measure for safely operating digger derricks on slopes exceeding 5°.