Cco Written Core Study Guide Questions
And Answers With Verified Solutions
Already Passed Latest Updated 2024
what is the purpose of Mats or cribbing under outrigger floats -
ANSWER✔✔distribute the force over a larger area
where is the best location to level a crane - ANSWER✔✔upper works
Before leveling a mobile Crane on out riggers and operator should ensure -
ANSWER✔✔There is no weight of the Crane bearing on any tires
Parading a mobile Crane with a long boom on uneven ground what support
conditions should be considered - ANSWER✔✔Keeping a 90ﾟ angle between
cylinder rod and pad
One may blocking or cribbing be placed under outrigger beams on mobile cranes -
ANSWER✔✔Never approved
Mobile cranes should be level to within what percent of grade - ANSWER✔✔One
percent
Timber Crane mats work best when they are - ANSWER✔✔Bolted together
When arriving in the Crane at the job site the operator should 1st determine the
condition of - ANSWER✔✔Access roads
White surface listed below would not be a good location for assembly or set up of
a mobile Crane - ANSWER✔✔Above underground vaults
Each outrigger pad and it's blocking should be sufficient to support -
ANSWER✔✔The total weight of the Crane and its load
How does high wind effect a mobile Crane with a long Boom -
ANSWER✔✔Introduces side load on to the boom
, What is the only time the out rigger beam should be less than fully extended -
ANSWER✔✔The load chart indicates that this is allowed
What is the primary purpose for rooster sheave or auxiliary boom point sheave -
ANSWER✔✔To separate the load hoist lines
Eccentric main boom tip reaving causes which of the following -
ANSWER✔✔Twisting of the main boom
Which type of wire rope listed below is installed on most mobile cranes -
ANSWER✔✔right regular leg
The Hoist drum flange shall extend a minimum of what distance over the top layer
of wire rope at all times while Crane is in operation - ANSWER✔✔1/2 inch
Which of the following is classified has standing wire rope - ANSWER✔✔Pendant
lines
When lifting on outriggers to floats or pads should Always be -
ANSWER✔✔Secured to the out rigger cylinders
How many randomly broken wires in a lay length must there be on a mobile
Crane hoist line before it should be removed from service - ANSWER✔✔Six
What is the minimum design factor required for a write regular lay boom or hoist
wire - ANSWER✔✔3.5
On a mobile Crane how many broken wires are permitted at the end connection
of a pennant line before it must be taken out of service - ANSWER✔✔1
Type one rotation resistant coyest wire rope has a design factor of - ANSWER✔✔5
to 1
It is important to know when lubricating Crane hoists wire rope that the lubricant
must - ANSWER✔✔Not hinder a visual inspection
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