NCCCO Lattice Boom Crawler Crane QUESTIONS & ANSWERS(RATED A)
6 views 0 purchase
Course
NCCCO Crane
Institution
NCCCO Crane
On a lattice boom crawler crane, the main boom length is measured from the: - ANSWER Center of the boom heel pins to the center of the boom tip sheave
What is the main purpose of mid point suspension pendants? - ANSWER To absorb shock that comes with dynamic loading
The main purpose of a gant...
NCCCO Lattice Boom Crawler Crane
QUESTIONS & ANSWERS(RATED A)
On a lattice boom crawler crane, the main boom length is measured from the: - ANSWER Center
of the boom heel pins to the center of the boom tip sheave
What is the main purpose of mid point suspension pendants? - ANSWER To absorb shock that
comes with dynamic loading
The main purpose of a gantry or a mast on a crane is: - ANSWER To increase the crane's leverage
on the boom
What effect does having the crawlers retracted have on a crawler crane with a long boom -
ANSWER Increases the probability of tipping
When using a mobile crane on a barge, the crane's load capacity chart shall be - ANSWER
Replaced by a list chart
Blocking can be placed under the ends of tracks to: - ANSWER Increase the crane's stability
when operating over the front or back
A crawler crane is based on ________ stability of static load. - ANSWER 75%
What quadrant produces the least amount of ground pressure on a lattice crawler - ANSWER
Side
When a crawler crane is on a barge, the list chart must be provided by the - ANSWER
Manufacturer
, When operating a crawler crane, the ground pressure will always be highest over the - ANSWER
Corner
Unless working in loos soft soil, a crawler crane should always travel _____ on pick and carry
operations - ANSWER Towards the load
Why use mats of cribbing - ANSWER To reduce ground pressure
The primary purpose for a rooster sheave or auxiliary boom point sheave is to - ANSWER
Separate the whip and main hoist lines
When operating near powerlines, how far must you be if the voltage is >50-200 - ANSWER 15'
When operating near powerlines, how far must you be if the voltage is >200-350 kV - ANSWER
20'
When operating near powerlines, how far must you be if the voltage is >350-500 kV - ANSWER
25'
When operating near powerlines, how far must you be if the voltage is >500to 750 kV - ANSWER
35'
When operating near powerlines, how far must you be if the voltage is >750-1000 kV - ANSWER
45'
When operating near powerlines, how far must you be if the voltage is >1000 kV - ANSWER
Determined by utility/owner
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 $10.99. You're not tied to anything after your purchase.
