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Safety professionals need to interpret a variety of charts including load charts for different lifting machines--cranes, forklifts, excavators, elevators, etc. In this video we take a look at the load charts for a Manitowoc Lattice Boom Crawler. Please keep in mind this chart only applies to a specific model of crane and there are slightly different layouts used by crane manufacturers. All manufacturers do focus on the same three primary variables affecting a crane's chart capacity--boom length, radius, and boom angle. The presenter is Dr. Doug Martin. Dr. Martin earned his Ph.D. from Oklahoma State University and is a CSP. In addition Dr. Martin worked as a safety manager in the construction industry for 20 years. For more information about the EHSM program at Northeastern you may contact Dr. Martin at marti223@nsuok.edu. Northeastern State University's Environmental, Health, and Safety Management program has been recognized as a Qualified Academic Program by the Board of Certified Safety Professionals (BCSP).