TECH
what measure the boom relative to horizontal
Boom angle indicator
Equipment must not be _______ unless ground is firm, drained, and graded.
Assembled and operated
What is the rated percentage of tipping when working on rubber?
75%
What is the design factor for a standard wire rope in terms of hoist/lifting services?
3.5
Cranes should be leveled within what percent of grade?
1%
Means any device that expands the range of tasks that can be done by the equipment
Attachments
The controlling entity must do what before allowing equipment to set up?
Ensure that ground preparations meet equipment requirement specifications for adequate support and degree of level.
What is the minimum clearance for counterweight distance near structure?
2 feet
What are signs of distortion in a wire rope?
Kinking, crushing, signs of core failure
What is the required clearance from a power line with 215kV?
20 Feet
Term used to define when the hook block comes into contac with boom tip
Two blocking
What’s the first thing an operator should look at when arriving to a new location?
Access roads
What is the deduction when using a man basket?
50%
When is a frequent inspection done on wire ropes?
Before each shift
Who’s gives hand signals to crane operatir?
Person assigned prior to lift.
is created when the load is applied to crane, taking slack out of pendants, hoist lines, or telescopic boom sections, slightly bending it.
Boom deflection
Who should you speak to if possible underground utilities are present?
Local utility company
How do you determine your clearances for counterweights and outriggers during crane set up?
Load chart
What percent of the nominal diameter is a wire rope deemed unusable?
More than 5%
When are personnel not required to wear a harness in a man basket?
Over water
An angle of inclination about the traverse of a barge, pontoon, vessel or other means of floatation.
Trim
When power lines are present, where should warning signs be placed?
In crane operator view and working area
LMI should be installed on cranes with a lifting capacity of
3 tons
How long are employers required to keep documentation of wire rope inspections?
12 months
how much can a crane capacity decrease by being 3 degrees off level?
Up to 50%