And he taught his next apprentice the only rule that mattered: The chart tells you what the crane could do once. You tell it what it can do today.
They help identify the safe working load (SWL) to ensure the crane’s structural limits are never exceeded.
He reached into his lunchbox and pulled out a worn, grease-stained notebook. Inside were columns of numbers in his father’s handwriting, then his own corrections in red pen. load chart for crane
He climbed back up. Picked up the notebook. Crossed out “12 tons @ 50 ft” and wrote “MAX 9.5 TODAY.”
: The load chart lists different boom lengths. The boom is the long, horizontal beam on the crane that can be extended or retracted. The chart provides load information for each boom length. And he taught his next apprentice the only
It prevents the crane from exceeding its tipping weight or structural capacity.
Managers use them to determine if a specific crane model is suitable for a job before it ever arrives on-site. He reached into his lunchbox and pulled out
OSHA and other safety bodies require operators to understand and use these charts. Key Components of a Load Chart
The old load chart was taped inside the cab of the rickety crawler crane, its edges curled like dried leaves. Marco, a third-generation crane operator, had stared at it ten thousand times, but today, he saw something new: a faint coffee ring next to the 85% jib radius.
: This refers to the horizontal distance from the center of the crane's rotation to the center of the load. The load chart provides lifting capacities at various radii.
: This section provides details about the crane model, its maximum lifting capacity, and other relevant specifications.