Upload
vukiet
View
281
Download
11
Embed Size (px)
Citation preview
CraneSafe + Fulford Certification Tel: 604.398.5230 | www.fulford.ca
MOBILE HYDRAULIC CRANE
20 Tonnes & Under
Lorain LCD-150
LOAD CHART & RIGGING
PRACTICE EXERCISES – QUESTIONS
CraneSafe Certification
Mobile Hydraulic 20 Tonnes & Under PRACTICE EXERCISES LCR.M20.LRLCD150.PEX1(020310)
8 May 2014
Load Chart& Rigging PRACTICE EXERCISES Mobile Hydraulic – 20 Tonnes & Under Lorain LCD-150 (1)
www.fulford.ca CraneSafe + Fulford Certification PEX2
Introduction
These 10 questions are for you to use to help get ready for the load chart part of the CraneSafe Certification assessment for Mobile Hydraulic – 20 Tonnes & Under.
The questions on your assessment will be different from these but will be presented in the same format as these questions.
With the questions are the answers with the relevant load charts. The answers explain how we arrived at the correct answer and you can use this to help work through any questions you may have gotten incorrect. We have not included all of the charts for this crane - but everything you need to answer the questions is included. You do not need the crane manual or full load chart package to answer the questions.
• 1/2 inch 6 x 19 IWRC, IPS, load line on main winch (main boom lifts)
• 1/2 inch Rotation Resistant line on auxiliary winch (jib lifts)
Specifications
Copyright © 2009 Fulford Harbour Consulting Ltd.
All material in this document is, unless otherwise stated, the property of Fulford Harbour Consulting Ltd. Copyright and other intellectual property laws protect these materials. Reproduction or transmission of the materials, in whole or in part, in any manner, without prior written consent of the copyright holder, is a violation of copyright law.
Printed copies of this document may be made, solely for personal, noncommercial use. Individuals must preserve any copyright or other notices contained in or associated with them. Users may distribute such copies to others, in electronic or printed form, without charge, without prior written consent of Fulford Harbour Consulting Ltd. Contact information for requests for permission to reproduce in any altered state, electronic or otherwise, or distribute for a charge or other consideration, this document or any other materials produced by Fulford Harbour Consulting Ltd are as listed below:
Fulford CraneSafe Certification #508 - 602 West Hastings Street, Vancouver, BC, V6B 1P2, Canada Toll free: 1.888.952.6033 Lower Mainland: 604.398.5230 Fax: 604.398.5236 [email protected]
Load Chart & Rigging PRACTICE EXERCISES Mobile Hydraulic – 20 Tonnes & Under Lorain LCD-150 (1)
www.fulford.ca CraneSafe + Fulford Certification PEX3
2. What is the crane’s maximum radius based on the following configuration?
• Main boom extended to 52 feet
• Load weight – 5,900 lbs
• 3 sheave block on main boom
• Rigging – 100 lbs
• Lift in the over the front quadrant
• Outriggers fully extended and set
Answer: feet
Load Chart & Rigging Questions
?
?
1. What is the crane’s net capacity based on the following configuration?
• Main boom extended to 30 feet
• 2 sheave block on main boom
• Radius – 15 feet
• Rigging – 60 lbs
• Over the front quadrant
• Outriggers fully extended and set
Answer: pounds
Load Chart & Rigging PRACTICE EXERCISES Mobile Hydraulic – 20 Tonnes & Under Lorain LCD-150 (1)
www.fulford.ca CraneSafe + Fulford Certification PEX4
4. What is the maximum load that can be lifted based on the following configuration?
• Main boom extended to 52 feet
• 2 sheave block on main boom
• 15 foot jib erected with hook and ball
• Rigging – 80 lbs
• Radius – 27 feet
• Lift from main boom over the side quadrant
• Outriggers fully extended and set
Answer: pounds
3. What is the crane’s lowest boom angle based on the following configuration?
• Main boom extended to 48 feet
• Load weight – 4,200 lbs
• Hook ball on main boom
• Rigging – 80 lbs
• Lift in the over the side quadrant
• Outriggers fully extended and set
Answer: degrees
?
?
Load Chart & Rigging PRACTICE EXERCISES Mobile Hydraulic – 20 Tonnes & Under Lorain LCD-150 (1)
www.fulford.ca CraneSafe + Fulford Certification PEX5
6. What is the longest boom length and radius the load can be picked and carried at creep speed?
• Load weight 3,900 lbs
• 2 sheave block on main boom
• Rigging 80 lbs
Answer: Main Boom Length feet
Radius feet
5. What is the crane’s net capacity based on the following configuration?
• Main boom extended to 48 feet
• JIb erected with 15 degree offset
• Hook and ball on jib
• Rigging – 40 lbs
• Main boom angle – 52 degrees
• Outriggers fully extended and set
Answer: pounds
?
?
?
Load Chart & Rigging PRACTICE EXERCISES Mobile Hydraulic – 20 Tonnes & Under Lorain LCD-150 (1)
www.fulford.ca CraneSafe + Fulford Certification PEX6
7. Name 7 precautions that must be addressed in a pick and carry operation.
Answer: 1.
2.
3.
4.
5.
6.
7.
8. What is the minimum size of 2-leg chain bridle required to lift a load of 10,000 pounds?
The bridle is choked at a 60 degree angle.
Answer: inches
Load Chart & Rigging PRACTICE EXERCISES Mobile Hydraulic – 20 Tonnes & Under Lorain LCD-150 (1)
www.fulford.ca CraneSafe + Fulford Certification PEX7
9. What is the minimum size of nylon web 2-leg bridle required to lift a load of 5,000 pounds?
The slings are in a choker hitch configuration at a 45 degree angle.
Answer: inches
10. What is the minimum size of nylon web slings required to lift a load of 11,000 pounds?
The two web slings are in a basket hitch configuration at a 35 degree angle.
Answer: inches
CraneSafe + Fulford Certification Tel: 604.398.5230 | www.fulford.ca
MOBILE HYDRAULIC CRANE
20 Tonnes & Under
Lorain LCD-150
LOAD CHART & RIGGING
PRACTICE EXERCISES – LOAD CHARTS
CraneSafe Certification
Mobile Hydraulic 20 Tonnes & Under PRACTICE EXERCISES LCR.M20.LRLCD150.PEX1(020310)
8 May 2014
Load Chart & Rigging PRACTICE EXERCISES Mobile Hydraulic – 20 Tonnes & Under Lorain LCD-150 (1)
www.fulford.ca CraneSafe + Fulford Certification PEX9
These charts are for assessment purposes only and should not be used to operate a crane. The individual crane’s load chart, operating instructions and other instructional plates must be read and understood prior to operating the crane.
Load Charts
Load Chart & Rigging PRACTICE EXERCISES Mobile Hydraulic – 20 Tonnes & Under Lorain LCD-150 (1)
www.fulford.ca CraneSafe + Fulford Certification PEX10
These charts are for assessment purposes only and should not be used to operate a crane. The individual crane’s load chart, operating instructions and other instructional plates must be read and understood prior to operating the crane.
Load Chart & Rigging PRACTICE EXERCISES Mobile Hydraulic – 20 Tonnes & Under Lorain LCD-150 (1)
www.fulford.ca CraneSafe + Fulford Certification PEX11
These charts are for assessment purposes only and should not be used to operate a crane. The individual crane’s load chart, operating instructions and other instructional plates must be read and understood prior to operating the crane.
Load Chart & Rigging PRACTICE EXERCISES Mobile Hydraulic – 20 Tonnes & Under Lorain LCD-150 (1)
www.fulford.ca CraneSafe + Fulford Certification PEX12
These charts are for assessment purposes only and should not be used to operate a crane. The individual crane’s load chart, operating instructions and other instructional plates must be read and understood prior to operating the crane.
Load Chart & Rigging PRACTICE EXERCISES Mobile Hydraulic – 20 Tonnes & Under Lorain LCD-150 (1)
www.fulford.ca CraneSafe + Fulford Certification PEX13
These charts are for assessment purposes only and should not be used to operate a crane. The individual crane’s load chart, operating instructions and other instructional plates must be read and understood prior to operating the crane.
Load Chart & Rigging PRACTICE EXERCISES Mobile Hydraulic – 20 Tonnes & Under Lorain LCD-150 (1)
www.fulford.ca CraneSafe + Fulford Certification PEX14
These charts are for assessment purposes only and should not be used to operate a crane. The individual crane’s load chart, operating instructions and other instructional plates must be read and understood prior to operating the crane.
Load Chart & Rigging PRACTICE EXERCISES Mobile Hydraulic – 20 Tonnes & Under Lorain LCD-150 (1)
www.fulford.ca CraneSafe + Fulford Certification PEX15
These charts are for assessment purposes only and should not be used to operate a crane. The individual crane’s load chart, operating instructions and other instructional plates must be read and understood prior to operating the crane.
Load Chart & Rigging PRACTICE EXERCISES Mobile Hydraulic – 20 Tonnes & Under Lorain LCD-150 (1)
www.fulford.ca CraneSafe + Fulford Certification PEX16
These charts are for assessment purposes only and should not be used to operate a crane. The individual crane’s load chart, operating instructions and other instructional plates must be read and understood prior to operating the crane.
Load Chart & Rigging PRACTICE EXERCISES Mobile Hydraulic – 20 Tonnes & Under Lorain LCD-150 (1)
www.fulford.ca CraneSafe + Fulford Certification PEX17
These charts are for assessment purposes only and should not be used to operate a crane. The individual crane’s load chart, operating instructions and other instructional plates must be read and understood prior to operating the crane.
Load Chart & Rigging PRACTICE EXERCISES Mobile Hydraulic – 20 Tonnes & Under Lorain LCD-150 (1)
www.fulford.ca CraneSafe + Fulford Certification PEX18
These charts are for assessment purposes only and should not be used to operate a crane. The individual crane’s load chart, operating instructions and other instructional plates must be read and understood prior to operating the crane.
Load Chart & Rigging PRACTICE EXERCISES Mobile Hydraulic – 20 Tonnes & Under Lorain LCD-150 (1)
www.fulford.ca CraneSafe + Fulford Certification PEX19
These charts are for assessment purposes only and should not be used to operate a crane. The individual crane’s load chart, operating instructions and other instructional plates must be read and understood prior to operating the crane.
Rigging Tables
Working Load Limit in pounds
When using a 2-leg bridle in a choker hitch configuration, multiply the above values by .75.
When using a double basket hitch configuration, multiply the above values by 2.
Note: For training and assessment use only.
Load Chart & Rigging PRACTICE EXERCISES Mobile Hydraulic – 20 Tonnes & Under Lorain LCD-150 (1)
www.fulford.ca CraneSafe + Fulford Certification PEX20
These charts are for assessment purposes only and should not be used to operate a crane. The individual crane’s load chart, operating instructions and other instructional plates must be read and understood prior to operating the crane.
Note: Capacities are for flat eye, twisted eye and triangle fittings. For training and assessment use only.
When using a 2-leg bridle in a choker hitch configuration, multiply the above values by .75.
When using a double basket hitch configuration, multiply the above values by 2.
Working Load Limit in pounds
Load Chart & Rigging PRACTICE EXERCISES Mobile Hydraulic – 20 Tonnes & Under Lorain LCD-150 (1)
www.fulford.ca CraneSafe + Fulford Certification PEX21
These charts are for assessment purposes only and should not be used to operate a crane. The individual crane’s load chart, operating instructions and other instructional plates must be read and understood prior to operating the crane.
When using a 2-leg bridle in a choker hitch configuration, multiply the above values by .75.
When using a double basket hitch configuration, multiply the above values by 2.
Working Load Limit in pounds
Note: For training and assessment use only.
CraneSafe + Fulford Certification Tel: 604.398.5230 | www.fulford.ca
MOBILE HYDRAULIC CRANE
20 Tonnes & Under
Lorain LCD-150
LOAD CHART & RIGGING
PRACTICE EXERCISES – ANSWER KEY
CraneSafe Certification
Mobile Hydraulic 20 Tonnes & Under PRACTICE EXERCISES LCR.M20.LRLCD150.PEX1(020310)
8 May 2014
Load Chart & Rigging PRACTICE EXERCISES Mobile Hydraulic – 20 Tonnes & Under Lorain LCD-150 (1)
www.fulford.ca CraneSafe + Fulford Certification PEX23
Load Chart & Rigging Answers
Q1 Net Capacity
To find the gross capacity you must check the capacity at 22 feet main boom length at a 15 foot radius in the over the front quadrant: 14,500 lbs.
You must also check the capacity at 36 feet boom length at a 15 foot radius in the over the front quadrant: 14,900 lbs.
NOTE: #2 Operation applies when either radius or boom length, or both, are between listed values, the smaller of the two listed load ratings shall be used.
Net Capacity = Gross Capacity – Weight of Load Handling Devices
Deductions (Weight of Load Handling Devices)
2 sheave block 325 lbs
Rigging 60 lbs
385 lbs
Gross Capacity: 14,500 lbs
Net Capacity: 14,500 – 385 = 14,115 lbs
Q2 Maximum Radius
Maximum Radius = Load Weight + Load Handling Devices
Gross Load
Load weight 5,900 lbs
3 sheave block 350 lbs
Rigging 100 lbs
6,350 lbs
Go to the over the front quadrant at a boom length of 52 feet then follow the column down until you come to a capacity that’s equal to or greater than the gross load of 6,350 lbs.
Maximum Radius: 25 feet
Load Chart & Rigging PRACTICE EXERCISES Mobile Hydraulic – 20 Tonnes & Under Lorain LCD-150 (1)
www.fulford.ca CraneSafe + Fulford Certification PEX24
Q3 Lowest Boom Angle
Gross Load on Crane = Load Weight + Load Handling Devices
Gross Load
Load weight 4,200 lbs
Hook ball 121 lbs
Rigging 80 lbs
4,401 lbs
NOTE: #2 Operation applies.
At the 36 foot boom length at 0 degrees. The capacity is 4,500 lbs which is more than the gross load on the crane in the over the side quadrant.
At the 52 foot boom length at 49.4 degrees. The capacity is 5,600 lbs which is more than the gross load on the crane in the over the side quadrant.
The higher of the two boom angles applies to determine the lowest boom angle the gross load can be boomed down.
Lowest Boom Angle: 49.4 degrees
Q4 Maximum Load
Because the 27 foot radius is between values listed, you must go to the next longer radius of 30 feet to determine gross capacity.
Maximum Load to be Lifted = Gross Capacity – Load Handling Devices
Deductions (Load Handling Devices)
2 sheave block 325 lbs
Hook ball x 2 (see note) 242 lbs
Rigging 80 lbs
647 lbs
Gross Capacity at a 27 foot radius: 5,100 lbs
Maximum Load = 5,100 – 647 = 4,453 pounds
NOTE: #6 Operation applies.
When jibs are erected but unused, add two (2) times the weight of any hook block, slings and auxiliary lifting devices at the jib head to the load.
Load Chart & Rigging PRACTICE EXERCISES Mobile Hydraulic – 20 Tonnes & Under Lorain LCD-150 (1)
www.fulford.ca CraneSafe + Fulford Certification PEX25
Q5 Maximum Load
Because the boom angle is between values listed, you must go to the next lower boom angle of 51 degrees to determine gross capacity.
Net Capacity = Gross Capacity – Load Handling Devices
Deductions (Load Handling Devices)
Hook ball 121 lbs
Rigging 40 lbs
161 lbs
Gross Capacity at 51 degrees, 15 degree offset: 3,100 lbs
Net Capacity = 3,100 – 161 = 2,939 lbs
Q6 Boom Length & Radius at Creep Speed
Gross Load
Load weight 3,900 lbs
2 sheave block 325 lbs
Rigging 80 lbs
4,305 lbs
Main Boom Length: 52 feet
Radius: 20 feet
Q7 Pick & Carry
See notes 4 and 5 on set up for pick and carry.
Load Chart & Rigging PRACTICE EXERCISES Mobile Hydraulic – 20 Tonnes & Under Lorain LCD-150 (1)
www.fulford.ca CraneSafe + Fulford Certification PEX26
Q8 Chain Slings
Answer: 1/2 inch
The capacity of a 1/2 inch chain sling in a 2-leg bridle hitch at a 60 degree angle is 16,627 pounds.
The slings are choked so there is a 25% reduction in capacity: 16,627 x .75 = 12,470 pounds
Q9 Web Slings
Answer: 5 inch
The capacity of a 5 inch nylon web sling in a 2-leg bridle hitch at a 45 degree angle is 7,775 pounds.
The slings are choked so there is a 25% reduction in capacity: 7,775 x .75 = 5,831 pounds
Q10 Web Slings
Answer: 4 inch
The capacity of one 4 inch nylon web sling in a single basket hitch at a 45 degree angle is 6,220 pounds.
The slings are in a Double Basket Hitch: 6,220 x 2 = 12,440 pounds