Response 1: Yes, as long as (1) the crane operator is prohibited from operating the crane outside the line of flags used to demarcate the work zone, and (2) the flags are close enough to each other and extend far enough along the demarcated boundary line that the operator is able to use them to judge whether the equipment remains within the demarcated boundary line. Question 1: Assuming that the flags are clearly visible to the crane operator, would demarcating the work zone as shown in Example 1 achieve compliance with the standard? The three flags form a line (the demarcated boundary line) parallel to the power line that is located at a distance from the power line equal to the minimum clearance distance required by the standard. However, a circle drawn at the maximum radius the boom could reach would have a larger radius. The radius of the circle represents the extension of the boom at its maximum extension and at the minimum angle shown in the crane's load chart for the weight and shape of the load to be picked. The employer has demarcated the work zone with three flags located in a straight line that cuts across the dotted circle with the crane at its center. Power lines are located on the side of the flatbed opposite the crane. It will be used to lift a HVAC unit from the flatbed to the roof of the building. A crane with a telescopic boom is positioned between a flatbed truck and a building.
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