2-29. MATERIAL HANDLING CRANE (MHC) OPERATION (CONT).
Determine what distance load is from crane and locate dimension along the bottom horizontal line (1).
(Example: Load is 11 ft (3m) from crane.)
Follow line vertically up graph until it intersects with boom length arc (2). Make intersection mark (3).
Follow line along arc and make note of boom length (4). (Example: If load is 11 ft. (3m) from crane,
boom length is 14.25 ft (4m).)
Return to intersection mark (3). Follow diagonal line (5) to determine boom angle setting (6). (Example:
Boom angle setting is 40-degrees from intersection mark.)
Return to intersection mark (3). Follow horizontal line to determine boom height (7). (Example: Boom
height is 19 ft (5m) from intersection mark.)
Locate distance the load is from crane in the Crane Range Diagram Summary.
Follow across Crane Range Diagram Summary to verify height of boom and to determine maximum load.
(Example: Boom height is 19 ft (5m) and maximum crane load is 10,000 lbs (4,536 kgs).)