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CraneSafe Certification
Tower Crane PRACTICE EXERCISES LCR.TC.PCSK170.P1
1 December 2010
CraneSafe Certification + Fulford Harbour Group Tel: 604.952.6033 | www.fulford.ca
TOWER CRANE Pecco SK 170
LOAD CHART & RIGGING
PRACTICE EXERCISESCraneSafe Certification CraneSafe
Certification CraneSafe
Certification
Load Chart & Rigging PRACTICE Tower Crane Pecco SK 170 (1)
www.fulford.ca CraneSafe Certification + Fulford Harbour Group 2
Introduction
These 10 questions are samples of the load chart and rigging part of your CraneSafe Certification Assessment for Tower Crane.
We have not included all of the charts for this crane - but everything you need to answer the questions is included in the load and jib charts you have here. You do not need the crane manual or full load chart package to answer the questions.
The crane industry in BC has stated that operators must get a minimum of 70% correct on the load chart and rigging part of the assessment to be competent.
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 #202 - 7950 Huston Road, Delta, BC, V4G 1C2, Canada Toll free: 1.888.952.6033 Lower Mainland: 604.952.6033 Fax: 604.952.6088 [email protected]
CraneSafe Certification CraneSafe
Certification CraneSafe
Certification
Load Chart & Rigging PRACTICE Tower Crane Pecco SK 170 (1)
www.fulford.ca CraneSafe Certification + Fulford Harbour Group 3
Load Chart & Rigging Questions
1. What is the maximum radius this load can be placed in the following configuration?
• Jib length – 58.2 metres
• Load weight – 6,120 kg
• Rigging weight – 165 kg
Answer: metres
2. What is the difference in gross capacity between the two jib lengths?
• Jib length – 45.4 metres
• Jib length – 58.2 metres
• Trolley radius – 30.5 metres
Answer: kg
CraneSafe Certification CraneSafe
Certification CraneSafe
Certification
Load Chart & Rigging PRACTICE Tower Crane Pecco SK 170 (1)
www.fulford.ca CraneSafe Certification + Fulford Harbour Group 4
3. What is the weight of the trip test block in the following configuration?
• Jib length – 170 feet
• Trolley radius – 170 feet
• Trip test block weight is five percent of tip capacity test block weight
Answer: pounds
4. Determine the highest hoist gear that can be used to perform this lift.
• 105hp (78kW) AC hoist installed
• Load weight – 14,880 pounds
• Rigging weight – 220 pounds
Answer:
CraneSafe Certification CraneSafe
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Certification
Load Chart & Rigging PRACTICE Tower Crane Pecco SK 170 (1)
www.fulford.ca CraneSafe Certification + Fulford Harbour Group 5
5. Based on the following configuration, determine the gross capacity.
• Jib length – 51.8 metres
• Radius – 25.9 metres
Answer: kg
6. What is the minimum size of wire rope sling required to lift a load of 7,100 pounds?
The vertical hitch is in a choked configuration.
Answer: inch
CraneSafe Certification CraneSafe
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Load Chart & Rigging PRACTICE Tower Crane Pecco SK 170 (1)
www.fulford.ca CraneSafe Certification + Fulford Harbour Group 6
7. What is the minimum size of wire rope slings required to lift a load of 17,500 pounds?
The sling is in a double basket configuration at an angle of 50 degrees.
Answer: inch
CraneSafe Certification CraneSafe
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Certification
Load Chart & Rigging PRACTICE Tower Crane Pecco SK 170 (1)
www.fulford.ca CraneSafe Certification + Fulford Harbour Group 7
Pecco SK 170
Load Charts
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.
CraneSafe Certification CraneSafe
Certification CraneSafe
Certification
Load Chart & Rigging PRACTICE Tower Crane Pecco SK 170 (1)
www.fulford.ca CraneSafe Certification + Fulford Harbour Group 8
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.
CraneSafe Certification CraneSafe
Certification CraneSafe
Certification
Load Chart & Rigging PRACTICE Tower Crane Pecco SK 170 (1)
www.fulford.ca CraneSafe Certification + Fulford Harbour Group 9
Wire Rope Slings
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 Certification CraneSafe
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Load Chart & Rigging PRACTICE Tower Crane Pecco SK 170 (1)
www.fulford.ca CraneSafe Certification + Fulford Harbour Group 10
Chain Slings
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.
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Load Chart & Rigging PRACTICE Tower Crane Pecco SK 170 (1)
www.fulford.ca CraneSafe Certification + Fulford Harbour Group 11
Nylon Web Slings
Note: Capacitiesareforflateye,twistedeyeandtrianglefittings. Fortrainingandassessmentuseonly.
Whenusinga2-legbridleinachokerhitchconfiguration,multiplytheabovevaluesby.75.
Whenusingadoublebaskethitchconfiguration,multiplytheabovevaluesby2.
Working Load Limit in pounds
CraneSafe Certification CraneSafe
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Load Chart & Rigging PRACTICE Tower Crane Pecco SK 170 (1)
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Hand signals for hoist and crane operations
Page 1 of 2
If hand signals are used between a signaller and the operator of a crane or hoist to control hoisting operations,
the following signals should be used:
TG 07-29
STOP
RAISETHEBOOMANDLOWERTHELOAD
LOWERTHEBOOMANDRAISETHELOAD
HOIST
EXTENDBOOM
RAISEBOOM
SWING MOVESLOWLY DOG(STOP)EVERYTHING
LOWER
RETRACTBOOM
LOWERBOOM
Armextended,fingersclosed,
thumbpointingupward.
Armextended,pointin
directionofswingofboom.
Useonehandtogiveanymotionsignalandplace
otherhandmotionlessinfrontofhandgivingthe
motionsignal(hoistslowlyshownasexample)
Clasphandsinfrontofbody.
Armextended,fingersclosed,
thumbpointingdownward.
Witharmextended,thumb
pointingup,flexfingersin
andoutaslongasload
movementisdesired.
Witharmextended,thumb
down,flexfingersinand
outaslongasload
movementisdesired.
Armextended,fingersclosed,
thumbpointingupward,other
armbentslightlywithforefinger
pointingdown,androtatehand.
Armextended,fingersclosed,
thumbdown,otherarm
vertical,forefingerupward
androtatehand.
Armextended,palmdown,movehandhorizontal. Withforearmvertical,finger
pointingup,movehandin
smallhorizontalcircles.
Bothfistsinfrontofbody,
withthumbspointing
outward.
Witharmextendeddown,
moveforefinger;pointing
down,movehandincircles.
Bothfistsinfrontofbody,
withthumbspointing
towardeachother.
TOOLBOX MEETING GUIDE
Workers’ Compensation Board of B.C.
!
CraneSafe Certification CraneSafe
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Load Chart & Rigging PRACTICE Tower Crane Pecco SK 170 (1)
www.fulford.ca CraneSafe Certification + Fulford Harbour Group
Answer Key
1. Answer: 21.3 metres
Gross Load
Load 6,120 kg
Rigging 165 kg
6,285 kg
The capacity at 23.3 metres is 7,030 kg.
2. Answer: 1,040 kg
Capacity at 30.5 metres
Jib 1 5,620 kg
Jib 2 4,580 kg
Difference = 1,040 kg
3. Answer: 320 pounds
The capacity of a 170 foot jib at the tip is 6,400 pounds.
Five percent of 6,400 pounds = 320 pounds (6400 pounds x 0.05 = 320 pounds)
4. Answer: Gear 1
The capacity of Gear 2 is 15,000 pounds.
The capacity of Gear 1 is 22,050 pounds.
The gross load weight is 14,880 + 220 = 15,100 pounds.
AK1
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Load Chart & Rigging PRACTICE Tower Crane Pecco SK 170 (1)
www.fulford.ca CraneSafe Certification + Fulford Harbour Group
5. Answer: 6,670 kg
The capacity of a 51.8 metre jib at a radius of 25.9 metres is 6,670 kg.
6. Answer: 3/4 inch
The capacity of one 3/8 inch chain in a choked vertical hitch is 7,650 pounds.
7. Answer: 5/8 inch
The capacity of a 5/8 inch sling at an angle of 45 degrees is 10,000 pounds.
The capacity of a double basket hitch is 10,000 pounds x 2 = 10,000 pounds.
AK2
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