NCCCO LBT case studies
NCCCO LBT · Put your knowledge to work in context.
The NCCCO Lift Director (LBT) certification is a credential offered within the CCO Certification family, which describes itself as "Committed to Quality, Integrity, and Fairness in Testing since 1995" and as a nonprofit founded in 1995. CCO states that its certifications are relied upon every day so employers can verify that personnel have demonstrated the knowledge, skills, and abilities needed to perform work safely, and it notes that certifications are used to monitor personnel, remain compliant, and confirm status. The NCCCO LBT case studies are 5 cases and about 3,651 words.
1Outrigger Over a Storm Drain at 98 Percent of Chart
A 100-ton hydraulic truck crane is set to place a 24,000 lb precast stair tower onto a second-floor deck. The load chart for the 62 ft boom at a 38 ft radius on full outriggers shows 26,500 lb.
807 words, about 4 min2115 kV Line, a 4 Percent Slope, and a Sidewalk Vault
A 60-ton rough-terrain crane is being set up in a street-side parking lane to lift a 6,000 lb rooftop unit onto a three-story building. The street slopes 4% along the curb and 1.5% across it.
754 words, about 4 min3The LMI Reading Was Taken With the Load Still on the Deck
A 60-ton all-terrain crane is lifting a skid-mounted pump from a flatbed trailer. The shipping papers list 9,800 lb, but the skid is packed with mud and an unmarked wooden crate is strapped to the top.
706 words, about 4 min4Six Findings at the Morning Briefing
You are the lift director for a 90-ton all-terrain crane scheduled to set a 14,000 lb chiller at a 55 ft radius, where the chart shows 18,000 lb. At the morning briefing you find: the annual comprehensive inspection sticker is dated 13 months ago; the monthly inspection sheets for the past two months are blank; the crane was assembled at this site three days ago by the operator and a helper, and no post-assembly inspection record exists; the load chart in the cab is for a 70-ton model, and the correct chart is in the site office; the operator's NCCCO card expired two months ago, though he has 20 years of experience; and the anti-two-block device is taped over because it 'keeps false-alarming.' The GC wants the chiller set before the roofers arrive at 10 a.m.
672 words, about 3 min5Offset Center of Gravity and a Choked Two-Leg Bridle
A 14,000 lb air-cooled chiller with two top lifting lugs 10 ft apart must be lifted from a truck and set on a roof curb. The rigger plans a two-leg bridle using two 8 ft wire rope slings, each rated 10,000 lb in a vertical hitch, choked to the lugs, with the hook centered between them.
712 words, about 4 min