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CE 403 Construction Methodology . Cranes. Cranes. Lifting Lowering Transporting Swinging Traveling. Crawler Hydraulic Truck Lattice-Boom Truck Rough-Terrain. Heavy Lift Tower. Crane Types. Hydraulic Truck Crane. Lattice Boom Truck Cranes. Rough Terrain Cranes. Heavy Lift Cranes.

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Presentation Transcript
cranes
Cranes
  • Lifting
  • Lowering
  • Transporting
    • Swinging
    • Traveling
crane types
Crawler

Hydraulic Truck

Lattice-Boom Truck

Rough-Terrain

Heavy Lift

Tower

Crane Types
slide21

Two blocking occurs when a hook block or hoist line attachment contacts

Anti-two Block Warning System

crane capacity
Crane Capacity

Lm – overturning moment of the load

rm – load radius

f – distance from center of rotation to outside edge of track

s – distance from center of rotation to crane’s centroid

We – total weight of equipment

crane capacity example
Crane Capacity Example
  • Can the tower crane, whose load chart is shown in the previous table, lift a 15,000-lb load at a radius of 142 feet? The crane has a L-7 jib and a two part line hoist. The slings that will be used for the pick weigh 400 lb.
crane capacity solution
Crane Capacity Solution
  • Weight of load = 15,000 lb
  • Weight of rigging = 400 lb (slings)
  • Required Capacity = 15,400 lb.
crane capacity solution1
Crane Capacity Solution
  • Weight of load = 15,000 lb
  • Weight of rigging = 400 lb (slings)
  • Required Capacity = 15,400 lb.
  • Max lifting capacity at a 142’ hook reach is 16,400lb.
  • 16,400 > 15,400 – crane can make the pick