According to this wind reduction chart, at what point must all crane operations stop?

• A. More than 50 mph wind speed
• B. 10 mph or more
• C. 25 mph
• D. More than 35 mph wind speed

Answer: (D)

Wind limits for crane safety set a hard stop point: when wind speed exceeds a certain threshold, crane operations must stop. This threshold is chosen because higher winds increase lateral forces on the crane and load, causing more sway, reduced control, and a greater risk of tipping or losing the load. When wind is more than 35 mph, those safety concerns rise enough that continuing work becomes unsafe, so all crane operations are halted until conditions fall below that level and the area is reassessed.

Winds well above that mark, like more than 50 mph, would also require stopping, but the chart uses the earlier limit to ensure safety before conditions deteriorate further. Winds at 10 mph or 25 mph are below the stop threshold, so operations can continue if there are no other hazards or gusts that push conditions into unsafe territory.