During clamshell operation, what stopping distance from the object is recommended?

• A. 5 ft
• B. 3 ft
• C. 4 ft
• D. 6 ft

Answer: (A)

The important idea is to keep a safe stopping distance from the object during clamshell operation to prevent contact as the bucket closes and moves. Five feet gives a solid buffer that accommodates small misjudgments, load shift, and any slight swing of the bucket, while still letting you work efficiently. If you get closer than that, the bucket edge or teeth could strike the object or surrounding material as you close and lift. Conversely, pulling back much further than five feet slows the process without providing extra safety, since the five-foot distance already accounts for typical motion and visibility. So five feet is the effective balance between safety and productivity.