QUESTIONS AND ANSWERS SURE A+
✔✔Which configuration tests backward stability? - ✔✔Maximum Boom Angle, Shortest
Boom, No Load, Over the side
(MINIMUM Boom Length at MAXIMUM Boom Angle)
✔✔Who must the plan be developed by before beginning a crane/derrick operation for
multiple cranes? - ✔✔Qualified Person (assisted by a lift director)
✔✔Where should hoist lines be kept during multiple cranes lifts? - ✔✔Vertical
✔✔What is the maximum rated capacity on each crane during multiple crane lifts? -
✔✔Not exceed 75%
✔✔Define Static Load - ✔✔Stationary load "no movement
✔✔Define Dynamic Load - ✔✔Sudden lifting, stopping, or swinging with suspended
load
✔✔What does dynamic swinging cause? - ✔✔Increased Radius
, ✔✔What does Dynamic Stopping cause to a crane? - ✔✔May cause structural failure
✔✔What Anti-two-block device do? - ✔✔Shuts down system
✔✔What is the purpose of Rooster Sheave/Auxiliary Boom Point Sheaves? -
✔✔Separate the whip-line and main load line.
✔✔What are Jib/Fly/Extensions primarily used for? - ✔✔Increased Height
✔✔What do you do if all power fails? - ✔✔Set all brakes and locking devices
✔✔What will Side Loading cause? - ✔✔Loss of capacity and structural failure
✔✔Which configuration is most susceptible to Side Loading? - ✔✔Long boom, minimum
radius
✔✔What does duty cycle operations create on the crane? - ✔✔Side-loading forces
✔✔Pick and carry with Rough Terrain or carry deck should be kept at which
configuration? - ✔✔Over the front, and keep boom as well as load, as low as possible
✔✔Define Parts of Line - ✔✔Individual lines supporting the load
✔✔What should be compensated for prior to lifting a load? - ✔✔Deflection
✔✔What happens when the cranes leverage is less than the loads leverage? - ✔✔Loss
of stability
✔✔What will eccentric or improper reeving cause? - ✔✔Twisting of the main boom
✔✔Where can the boom tip elevation be found? - ✔✔Range diagram
✔✔What can be determined using boom length and boom angle on the range diagram?
- ✔✔Radius
✔✔What measurements are LMI values best verified? - ✔✔Actual measurements
✔✔Where shall the load be kept when traveling with the load on an incline? - ✔✔Uphill
position
✔✔What shall load charts be marked with to match to specified cranes? - ✔✔Serial
number, part number, or other traceable method