Crane lift calculator
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NCCCO began allowing calculators on specific exams in light of a study commissioned by International Assessment Institute (IAI), the company that provides test development and administration services to NCCCO. Candidates testing via computer-based testing are permitted to use an on-screen calculator. Only NCCCO-supplied calculators are permitted to be used-for security reasons, candidates may not bring their own calculators into the secure exam room. Since the new policy allowing calculators on specific tests went into effect two years ago, NCCCO has given away approximately 30,000 calculators to certification candidates. Candidates are permitted to take the calculators home with them after completing their exam(s).
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“This highly visible sponsorship opportunity demonstrates Sicklesteel Cranes’ commitment to NCCCO’s primary mission of promoting safe lifting practices.” Sicklesteel also currently serves NCCCO as its 2014 President. “Sicklesteel Cranes is delighted to show its support of CCO certification programs and the safety benefits certification brings,” said Thom Sicklesteel, president of Sicklesteel Cranes. Vernon, WA) has donated 20,000 calculators for candidates’ use.īasic calculators are supplied for CCO Mobile Crane Operator Specialty Exams (not Core), Digger Derrick Operator, Rigger Level II, Mobile Crane Inspector, Mobile Crane Lift Director, and Tower Crane Lift Director exams. With our example of 2 tonne at 3 metres, if the load or sling length causes the hook to be so high that the inner boom cannot be used for the lift, then probably an 8 tonne metre crane would be the size required.Ī winch rope crane will give a vertical lift as seen in Figure 2 (therefore no increase in radius), so this consideration is not applicable to UNIC & Cobra telescopic boom cranes fitted with winches.June 2014-In support of the National Commission for the Certification of Crane Operators’ policy of providing calculators for certain CCO written exams, Sicklesteel Cranes (Mt.
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The resulting increase in the radius can be substantial and is often sufficient to over pressurize the luff rams and to activate the overload protection (if fitted) which may prevent the crane moving into the required position. The operator may not get sufficient hook height to clear the base of the load over the tray body. In this configuration, only the outer boom can be raised. To handle a high load of near crane capacity, the inner boom must be vertical (or near to vertical), and the outer boom pointing down, with the hook above the centre of the load. You would need a crane rated at 6 tonne metres or better to do the job BUT it is important to consider the physical size of the load you are lifting. But with high or long slung loads, this calculation can lead to an embarrassment!
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If we say that we need to lift 2 tonne at 3 metres, we would look for a 6 tonne metre crane. Caution: Heavy (in close) lifts have a complication.