Exam (elaborations)
Lattice Boom Crane (Actual) Exam Graded A+
- Course
- Institution
Lattice Boom Crane (Actual) Exam Graded A+
[Show more]
Content preview
Lattice Boom Crane (Actual) ExamGraded A+
A crane is setup with 57 degree boom angle. There is no listing on the C capacity chart
for that angle. What action should the operator take? - ANSWER-Use the listing of the
next lower boom angle
A crane operator must have a physical every ___ years? - ANSWER-3
A crane operator must have a physical exam every: - ANSWER-3 years
A crane with a long boom operating at a short radius and 3 degrees out of level could
lose approximately what percent of its capacity? - ANSWER-60%
A hand signal that has an arm extended, thumb pointing up and fingers flexing means?
- ANSWER-Raise the boom and lower the load
A sudden start or stop will produce a: - ANSWER-Shock load
An Extension attached to the boom point to provide added boom length for lifting
specified loads is a: - ANSWER-Jib
An operator must understand crane functions, ______ and operating characteristics. -
ANSWER-Limititations
As a general rule on a multi- crane lift, no crane should be loaded greater than what
percentage of net capacity? - ANSWER-75%
As a load is lifted out of the water , the load on the crane will: - ANSWER-Increase
Before starting adjustments or repairs on a crane, what action must be taken? -
ANSWER-Render the starting means inoperative
Capacities above the bold dark line on the load chart are based on what? - ANSWER-
Structural competence of the crane
Capacities below the bold line on the cranes capacity chart are based on what? -
ANSWER-The stability of the crane
Crane capacity charts are based on what? - ANSWER-Structural competence and
stability
Crane operators are required to pass what types of examinations? - ANSWER-Written
and practical
, Cribbing/matting under a outrigger pad must be how big? - ANSWER-Larger than the
pad
Define operating radius - ANSWER-The horizontal distance between the axis of rotation
and the center of the gravity of a freely suspended load
During duty cycle work a crane must not be loaded more than ____% of its capacity. -
ANSWER-80
Extending crawler tracks on a crane has what effect on capacity? - ANSWER-Increases
capacity
Hand signals from what standard must be used in lifting operations? - ANSWER-OSHA
Sub Part CC
How do
You calculate the capacity of a crane - ANSWER-Subtract the capacity deductions from
the cranes gross capacity.
How much is the crane operator permitted to overload a crane beyond its rated capacity
in the course of normal operations? - ANSWER-None of the above
How often must a crane hook be inspected? - ANSWER-Each shift
If a load chart shows no capacity for a particular boom length and radius, the operator
should? - ANSWER-Not lift the load
If a telescopic boom crane is approaching a two blocking situation, the operator should:
- ANSWER-Retract the boom
If blocking or matting is required, it must be placed under what? - ANSWER-Outrigger
pads
If the operating radius is measured at 58ft and the load chart shows capacities at 55
and 60ft,which capacity should be used? - ANSWER-The capacity at 60ft
In what quadrant of operations does a truck crane have its greatest capacity? -
ANSWER-Over the rear
In which quadrant of operation does a truck crane have its greatest capacity? -
ANSWER-Over the rear
It is safe to operate a crane when the Danger of lightning is present. - ANSWER-False
Lifting from the jib on rubber is: - ANSWER-Prohibited by most manufacturers
The benefits of buying summaries with Stuvia:
Guaranteed quality through customer reviews
Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.
Quick and easy check-out
You can quickly pay through credit card or Stuvia-credit for the summaries. There is no membership needed.
Focus on what matters
Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!
Frequently asked questions
What do I get when I buy this document?
You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.
Satisfaction guarantee: how does it work?
Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.
Who am I buying these notes from?
Stuvia is a marketplace, so you are not buying this document from us, but from seller CLOUND. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for $10.99. You're not tied to anything after your purchase.
Can Stuvia be trusted?
4.6 stars on Google & Trustpilot (+1000 reviews)
76462 documents were sold in the last 30 days
Founded in 2010, the go-to place to buy study notes for 14 years now