Exam (elaborations)
Mobile Crane Questions Test #5 – Questions And Answers
- Course
- Institution
Mobile Crane Questions Test #5 – Questions And Answers
[Show more]
Seller
Follow
Studyhall
Reviews received
Content preview
Mobile Crane Questions Test #5 – Questions AndAnswers
What action does a signal person intend the operator to perform if he
extends his arm at shoulder height, makes a fist with his hand, and sticks
his thumb up? Correct Ans - Boom up.
According to ASME B30.5 mobile crane standard, how many randomly
distributed broken wires, maximum, in rotation-resistant rope is cause for
replacement of the rope? Correct Ans - 2 broken wires in 6 rope
diameters.
Within what percentage of level does a telescopic boom crane have to be
for the gross ratings in the load chart to remain valid? Correct Ans -
1%.
According to the B30.5 mobile crane standard, it's OK for an operator to
leave the cab of a crane with the engine running so long as: Correct Ans
- The operator keeps the crane in view and restricts access to the area
around the crane.
If a bold line is shown on a load chart, the capacities below the line:
Correct Ans - Are based on the stability of the crane.
On duty cycle operations, such as skipping concrete, most manufacturers
require a crane's load chart capacity to be reduced by: Correct Ans -
20%.
A truck crane is set up on outriggers. The part of the load chart governed
by stability is based on what percentage of the crane's capacity?
Correct Ans - 85%.
What is the OSHA regulation governing cranes in construction? Correct
Ans - 1926.1400.
A crane is set up with 3 of its 4 outriggers fully extended and the fourth
retracted. The capacity of the crane in this configuration will be found in
the: Correct Ans - On-rubber chart or lowest applicable load chart.
, When lifting personnel, the total weight of the loaded personnel platform
must not exceed what percentage of the rated capacity of the crane?
Correct Ans - 50%.
The tipping axis of a crawler crane: Correct Ans - Depends if the
idler or sprocket are in line or offset from the track rollers.
If a jib's capacity is 5 tons, and the headache ball weighs 900 lbs, the net
capacity load would be: Correct Ans - 9,100 lbs.
What action does a signal person intend the operator to perform if he
extends his arm at shoulder height, makes a fist with his hand, and sticks
his/her thumb up? Correct Ans - Boom up.
When hoisting personnel, within what percentage of level must a telescopic
boom crane be in order for the gross ratings in the load chart to remain
valid? Correct Ans - 1%.
The load line of the crane you're operating contacts an energized power
line. There's no sign of any other danger, such as fire. What should you do?
Correct Ans - Stay in the cab until the lines are de-energized.
According to OSHA 1926.1413, how many randomly distributed broken
wires in rotation-resistant rope are cause for replacement of the rope?
Correct Ans - 2 broken wires in 6 rope diameters.
What is the net capacity of a crane on main boom unless the manufacturer
states otherwise? Correct Ans - The capacity listed in the load chart
minus the weight of the rigging and all attachments.
What may happen to a properly rigged load when lifted off the ground
unless the operator takes account of boom deflection? Correct Ans -
It could swing out away from the crane.
What Standard Method hand signal is being illustrated? (Arm raised
horizontal with hand closed in fist, a finger pointing..). Correct Ans -
Swing.
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 Studyhall. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for $9.99. You're not tied to anything after your purchase.
Can Stuvia be trusted?
4.6 stars on Google & Trustpilot (+1000 reviews)
73243 documents were sold in the last 30 days
Founded in 2010, the go-to place to buy study notes for 14 years now