The term "Superstructure or Upper works" refers to the area of the crane: - ANSWER Above the swing circle
A crane must be level within _______% for the load chart ratings to be valid? - ANSWER 1%
On what principle is crane stability based? - ANSWER Leverage
The term "Superstructure or Upper works" refers to the area of the crane: -
ANSWER Above the swing circle
A crane must be level within _______% for the load chart ratings to be valid? -
ANSWER 1%
On what principle is crane stability based? - ANSWER Leverage
What would be the effect of moving the tipping axis closer to the cranes center of
gravity? - ANSWER Reduced stability
Which of the following matches the appropriate load chart to a particular crane? -
ANSWER Serial number
,A durable rating chart with legible letters and figures shall be provided with each
crane accessible to: - ANSWER The operator at the controls
The lifting capacities listed in the load chart assume that: - ANSWER The lift is to
be performed under ideal conditions
A "rough terrain" crane set up on outriggers that is based on 85% tipping should
have the tires: - ANSWER Off the supporting surface
Load charts are based on stationary loads, which are also known as: - ANSWER
Static loads
The capacity in a mobile crane's load chart are based on either structural limits or
- ANSWER Stability
The values listed in the manufacture's load chart show: - ANSWER Rated
capacities
Net capacity is: - ANSWER Manufactures load ratings minus capacity deductions
Ona telescopic boom truck with outriggers properly positioned, the working area
chart will indicate "over front" area is: - ANSWER Determined by the crane
manufacturer
When the load radius falls between capacities listed in the load chart use the
gross capacity for the - ANSWER Longer radius
, When the boom angle falls between the capacities listed in the load chart use the
gross capacity for the - ANSWER Lower boom angle
When load charts are between the values listed in the load chart, the value that
must be used is the: - ANSWER Lower at a longer radius
A load moment indicator (LMI) is a computer installed on cranes designed to:
provide the operator with information regarding the boom length, boom angle,
boom tip height, working radius, rated load and a total calculated weight being
lifted by the crane. The LMI also warns an operator when an overloading situation
is about to occur. - ANSWER True
. A crane operator plans to lift a gross load that weighs 26,300 Ibs. Based solely on
the line pull of the crane base 6,000 Ibs. what are the minimum parts of line
required to — make the lift? - ANSWER Five
Backward stability on a truck mounted crane could be dangerous when the crane
is working on rubber, boom angle, minimum boom length: - ANSWER Over the
side at a minimum radius
Hydraulic cranes shall be equipped with holding valves to prevent boom lowering
in the event of - ANSWER Hydraulic Failure
What is the sum of the following deductions? Block = 1,350 Ibs; Rigging = 55 Ibs;
Lifting beams = 200Ibs; - ANSWER 1,605 lbs.
What is the minimum number of wraps required by OSHA to remain on load hoist
drums? - ANSWER 2 wraps
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 shantelleG. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for $12.99. You're not tied to anything after your purchase.
