NCCCO LBC case studies
NCCCO LBC · Put your knowledge to work in context.
The NCCCO Lattice Boom Crawler Crane Operator (LBC) certification is a credential administered by the National Commission for the Certification of Crane Operators (CCO), a nonprofit organization founded in 1995 and committed, in its own words, to "Quality, Integrity, and Fairness in Testing." It is aimed at operators who run crawler-mounted lattice boom cranes - the long-boom, track-mounted machines used for structural steel, plant construction, bridge work, and heavy picks that require the crane to travel on its own crawlers. Candidates are typically working operators, or operators-in-training being moved into a crawler seat, and employers commonly rely on the credential to document demonstrated knowledge and skill. The NCCCO LBC case studies are 5 cases and about 3,514 words.
1Matting Decision on Engineered Fill Over a Storm Sewer
A 100-ton class crawler crane, 180,000 lb operating weight, is setting precast wall panels with 110 ft of boom. The heaviest pick is 20,000 lb at 40 ft radius plus 2,000 lb of rigging.
765 words, about 4 min2Wind, Radius Creep, and a Pick Near Chart Capacity
A 90-ton crawler with 100 ft of boom is setting a 12,000 lb rooftop unit with about 120 sq ft of sail area. The delivery truck can only park where the pick is at 60 ft radius.
661 words, about 3 min3Jib Capacity and Deductions at Long Radius
A 250-ton crawler is configured with 150 ft of main boom and a 30 ft jib at 20 degree offset, setting steel on the far side of a foundation. The main boom chart gives 46,000 lb at 45 ft radius.
593 words, about 3 min4138 kV Line Across the Swing Path
A crawler crane is setting 8-ton precast panels on the north side of a building. A 138 kV transmission line on steel poles runs parallel to the swing path.
750 words, about 4 min5Pick and Carry vs. the Static Chart
A 150-ton crawler with 90 ft of boom (roughly 310,000 lb operating weight) must pick a 16,000 lb generator from a truck at 30 ft radius and walk it 140 ft to a pad; rigging is 600 lb. The static chart shows 28,000 lb at 30 ft.
745 words, about 4 min