Book - RA Advanced Rigging

Neil Francis, ManagerNeil Francis, ManagerMobile:Mobile: 0419 592 4040419 592 404Freecall:Freecall: 1800 064 9661800 064 966

P.O. Box 1103, Moe Vic. 3825Fax: (03) 5126 3210

Email: [email protected]

ABN: 85 066 339 110

RIGGING

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Name

RAASSESSMENT INSTRUMENT

ADVANCED

Advanced Rigging

ASSESSMENT

Part 1 Practical

Part 2 Assignment

Part 3 Knowledge

April 1994

Loadshifting: Non Forklift General Guidelines June 1995 i

Assessor guidelines general

1. Introduction1.1 Scope

These general guidelines apply to all theassessment instruments for thecertificates of competency prescribed bythe National Guidelines for OccupationalHealth and Safety Competency Standardsfor the Operation of LoadshiftingEquipment and Other Types of SpecifiedEquipment.

Assessors should also be familiar with thepublication Assessment guidelines forNational Occupational Health and SafetyCertification Standard for users andoperators of industrial equipment.

1.2 Additional guidelinesGuidelines which provide additionalspecific information to certificateassessors are also included in eachassessment instrument. Included, whereappropriate, are specific instructions onthe usefulness of training records (suchas log books) and other certificates withoverlapping competencies.

1.3 Evidence of competenceEvidence of competence is established ina number of ways. The methods used inthe following instruments involve:• assessment of practical performance• written and/or oral answers to

questions on underpinningknowledge.

2. Preparing for the assessment2.1 Study the instruments

You need to read the assessmentinstruments and specific instructionscarefully before beginning anassessment.

2.2 Confirm appointmentsPrior to an assessment, you need toconfirm the date, time and location of theassessment with the applicants and anyother relevant people.

2.3 Equipment availabilityThe availability of equipment, materialsand a suitable working area must beorganised and confirmed, prior to theassessment.

2.4 Workplace factorsBecause procedures and processes varygreatly between workplaces, it isimportant for assessors to plan theirapproaches to meet the requirements ofthe individual workplace.

Make sure you take the timeframe intoaccount when planning the assessmentand also make applicants aware of anytime limits.

2.5 Selecting questionsQuestions for the written/oral assessmentshould be randomly selected, either byhand or using the computer system, ifapplicable.

3. Conducting the assessment3.1 Provide an explanation

Begin by explaining clearly to theapplicants what is required of them.Check that applicants have provided (orhave been provided with) the necessarytools and equipment.

3.2 Practical performanceComplete the performance checklist, asthe applicant works through the requiredtasks. Wherever possible, this should bedone in a normal working environment.

Do not ask the applicant questions whilehe or she is performing a task, as this canbe distracting, and may affect the timetaken to complete the assessment.

If, at any time, the applicant isendangering himself/herself or others,stop the assessment immediately. Thisindicates that the applicant is not yetcompetent and may require furthertraining, before being reassessed.

Loadshifting: Non Forklift General Guidelines June 1995 ii

Assessments should also be stopped, ifequipment or property are likely to bedamaged.

3.3 KnowledgeThe knowledge assessment covers bothoral and written exercises. The modelanswers provided with the knowledgeassessment instruments are notnecessarily exhaustive. Use your ownjudgement when scoring alternativeanswers.

3.4 Recording responsesEach item and question on theassessment forms you use isaccompanied by a box. Assessors mustcomplete every box as follows:

CORRECT PERFORMANCE/ANSWER

NOT YET ACHIEVED

NOT APPLICABLE

If a box is marked incorrectly, cross outthe mistake, mark the correct responsealongside, and initial the change.

4. Determining competencies4.1 Assessment summary

A specific assessment summary is givenfor each certificate class. This is to befilled in and signed by the assessor, andcountersigned by the applicant.

The original and duplicate are given to theapplicant. The applicant provides theoriginal to the certifying authority. Thetriplicate is retained by the assessor.

4.2 Competency requirementsIn order for you to deem an applicantcompetent, he or she must havecompleted each section of theassessment to the standard required.You should note any time constraintswhen arriving at your decision.

The standard required for each instrumentis specified in the specific guidelinesand/or on the summary page at the end ofeach assessment.

In the case of a repeat assessment, theassessor can decide to apply the whole oronly part of the assessment.

4.3 Additional commentsWhere an applicant fails to meet thestandard of competence, you should adda written comment on the AssessmentSummary, which briefly explains theproblem.

Advice to the applicant, on theappropriate remedial action should alsobe included. This will also assist thecertificate assessor, in the event that theapplicant undergoes future reassessment.

Likewise, if an applicant demonstratesoutstanding or remarkable performance,this should be noted.

4.4 Further investigationAs a certificate assessor, it is your role todetermine whether or not an applicant hasachieved the standard necessary for thecertifying authority to be able to grant acertificate of competency.

Whenever you are unsure of theapplicant's performance or knowledge orperformance, ask additional questions,and obtain additional evidence, beforemaking your final decision.

National Occupational Health and Safety Certification Standardfor

Users and Operators of Industrial Equipment

ASSESSMENT INSTRUMENT

FOR THE

ADVANCED RIGGING

CERTIFICATE OF COMPETENCY

PART ONE

PRACTICAL SKILLS PERFORMANCE ASSESSMENT(Tasks and Model Results)

Advanced Rigging - Practical Skills

CONTENTS

Page

ASSESSOR GUIDELINES SPECIFICIntroductory notes 2

Conditions 2

Notes on the practical exercise 3

ASSESSMENT FORM 4

RELATIONSHIP TO THE NATIONAL CERTIFICATION STANDARD 5

Advacned Rigging Practical June 1995 2

Assessor guidelines specific

Introductory notes - Practical

1 The Advanced Rigging Certificateencompasses the requirements for theBasic and Intermediate RiggingCertificates. It is preferable that anapplicant for the Advanced RiggingCertificate already holds a Basic andIntermediate Rigging Certificate or haspreviously passed a practical skillsassessment for the Basic andIntermediate Rigging Certificates.Otherwise the assessment for anapplicant for the Advanced Certificatemust incorporate the requirements of theBasic, Intermediate and AdvancedCertificate assessment.

2 The practical skills performanceassessment is one of three assessmentswhich applicants must pass to qualify foran Advanced Rigging Certificate ofCompetency. The other components area knowledge assessment and a writtenassignment.

3 The practical skills performanceassessment for Advanced Rigging is a`closed book' practical exercise involvingthe rigging of a span rope.

In practical skills performanceassessment the certificate assessorevaluates the applicant's appliedknowledge and understanding and theapplicant's familiarity with riggingequipment and recommended workprocedures. On completion of theassessment the assessor will determinewhether the applicant can safelyundertake, without direct supervision, thetasks encompassed within units ofcompetence 1.0 and 2.0 comprisingAdvanced Rigging prescribed bySchedule A of the National OccupationalHealth and Safety Certification Standardfor Users and Operators of IndustrialEquipment (NOHSC: 1006, 1992).

4 The relationship between theperformance assessment and theStandard's prescribed performancecriteria and range statements is set outon page 5.

A full assessment should be completedwithin two hours.

5 An applicant who produces a satisfactoryrecord of training (such as a log book)which establishes at least 25 workingdays of experience in the rigging of ginpoles, sheerlegs, guy derricks, flyingfoxes, cable- ways or span rope does notrequire a practical skills performanceassessment.

6 Any other partial or full waiver ofassessment should only be permitted incompliance with guidelines,determinations or advice given tocertificate assessors by the certifyingauthority.

Conditions

7 LocationThe practical skills assessment can beconducted at any location which has:• sufficient clear space for the

exercise to be carried out; and• suitable beams and anchorage

points for the span rope.

8 Minimum plant and equipmentThe following should be used as a guideby the assessor. The actual quantitiesand dimensions may vary dependingupon availability:

• suitable length of FSWR of adequatediameter;

• sufficient beam chaffers or otheradequate beam packing;

• double base clamps, wedgedsockets, thimbles, shackles or othersuitable anchorage devices asappropriate;


• a suitable purchase;• where necessary, a suitable sag

adjuster such as a chain block orchain puller;

• where necessary, an industrial-gradeportable ladder or other safe meansof gaining access to overheadbeams.

9 Tools for the applicantEach applicant must provide (or beprovided with) the following tools:

• spanners or adjustable wrenches• retractable tape measure or folding

rule.

10 Personal protective equipment for theapplicantEach applicant must provide (or beprovided with) the following PPE:

• safety helmet complying withAS 1801

• sturdy, non-slip footwear that coversthe whole foot

• close-fitting protective gloves• close-fitting clothing.

11 Conduct of assessmentWherever possible, applicants should beassessed in groups of three. Where lessthan three applicants are to be assessed,the assessor should arrange forassistance (or the assessor may assist).

Where applicants are assessedsimultaneously, the assessor mustensure that the various tasks are evenlyshared so that a full assessment of eachapplicant can be made. This may involvesome repetition of tasks.

The performance of each applicant is tobe recorded on the assessor's check list,a copy of which is included in thisdocument.

An applicant passes a practical skillsperformance assessment when eachitem on the check list is marked as either`competent' or `not applicable', asappropriate.

12 Safety of personnelWhere an applicant is workingdangerously, recklessly or without thenecessary co-ordination and balance, theassessor must direct the applicant tocease work and terminate those parts ofthe assessment forthwith.

Notes on the practical exercise

13 Rigging a rope span

Note: This assessment does notapply to applicants with accepteddocumentary evidence of adequateexperience.

The assessor nominates the anchoragepoints and desired location of the spanrope and the location of the load forwhich the span rope is required.

The applicant must ensure that:

a beam edges are adequately packed;

b span rope is securely anchored;

c purchase is correctly located;

d correct rope sag is achieved;

e all connections are correctly made;

f no parts are overloaded.


Assessment form: Advanced RiggingApplicant's name ..........................................................

Performance items

Rigging a span rope

Applicant ensured:• beam edges adequately

packed

• span rope securelyanchored

• purchase correctly located

• correct rope sag achieved

• all connections madecorrectly

• no parts overloaded


Advanced Rigging PracticalRELATIONSHIP TO THE NATIONAL CERTIFICATION STANDARD

THE UNITS OF COMPETENCE

The exercise set for practical skills performanceassessment is intended to assess the appliedknowledge and understanding and thefamiliarity with rigging techniques andrecommended work practices additional tothose required for Basic and IntermediateRigging which are necessary to carry out unitsof competence 1.0 and 2.0 for AdvancedRigging prescribed by Schedule A of theNational Occupational Health and SafetyCertification Standard for Users and Operatorsof Industrial Equipment.

These are as follows:

1.0 Plan and prepare work2.0 Complete rigging work

Each unit of competence is subdivided intoelements of competence, for whichperformance criteria are prescribed.

THE PERFORMANCE CRITERIA

The work involved in undergoing the practicalskills performance assessment reflects theNational Standard's following performancecriteria: 1.1.6, 1.1.9, 1.1.16, 1.1.18, 1.2.7, 2.1.3and 2.2.12.

Relevant performance criteria which are notreflected in the Advanced Rigging assessmenthave been covered in the Dogging and theBasic and/or Intermediate Rigging assessmentsand do not require additional assessment.

THE RANGE STATEMENT

The tasks making up the practical skillsperformance assessment are focused aroundthe rigging of a span rope.

This exercise utilises the typical practical skillsand techniques, additional to those used forIntermediate Rigging, required to carry

out work covered by the National Standard'srange statement for Advanced Rigging.

The model results apply the requirements of theNational Standard for Plant to the obligationsunder State/Territory occupational health andsafety legislation of a person who is responsiblefor rigging work.

The model results are consistent with theadvice given in a Guide for Riggers, a revisededition of which is due to be published by theWorkCover Authority of NSW during 1994.




FOR THE

ADVANCED RIGGING


PART TWO

WRITTEN ASSIGNMENT

(Questions and Answers)

Advanced Rigging − Written Assignment

CONTENTS

Page

ASSESSOR GUIDELINES SPECIFICIntroductory notes

8

INSTRUCTIONS TO APPLICANTS 9

DIRECTIONS: SECTIONS 1 TO 3 10

MODEL ANSWERSSection One: Span ropes 12

Section Two: Gin poles 12

Section Three: Suspended scaffolds 13


Advanced Rigging Assignment April 1994 8


Introductory notes - Assignment

1 The Advanced Rigging Certificateencompasses the requirements for theBasic and Intermediate RiggingCertificates. It is preferable that anapplicant for the Advanced RiggingCertificate already holds a Basic andIntermediate Rigging Certificate.Otherwise the assessment for anapplicant for the Advanced Certificatemust incorporate the requirements of theBasic, Intermediate and AdvancedCertificate assessment.

2 The written assignment for AdvancedRigging is one of three assessmentswhich applicants must pass to qualify fora Advanced Rigging Certificate ofCompetency. The other components area knowledge assessment and aperformance assessment.

3 The written assignment for AdvancedRigging is a `closed book' examinationconsisting of a total of seven separatetasks. The tasks cover three sections.

In the written assignment the certificateassessor evaluates the applicant'sconceptual understanding, his/her abilityto apply simple mathematics andphysics, and ability to interpret technicalspecifications. On completion of theassessment the assessor will determinewhether the applicant can safelyundertake, without direct supervision, thetasks encompassed within units ofcompetence 1.0 and 2.0 comprisingAdvanced Rigging prescribed bySchedule A of the National OccupationalHealth and Safety Certification Standardfor Users and Operators of IndustrialEquipment (NOHSC: 1006, 1992).

4 The relationship between the threesections of the assignment and theStandard's prescribed performancecriteria and range statements is set outon page 15.

A full assignment includes five minutesreading time and up to 55 minutes tocomplete.

5 To pass the assignment, the applicantmust satisfactorily complete each of thefollowing sections:

Section 1: Span ropes (One task)Section 2: Gin poles (Three tasks)Section 3: Suspended scaffolds

(Three tasks)

6 An applicant who holds an AdvancedScaffolding Certificate, or who haspreviously passed a written assignmentfor Advanced Scaffolding does notrequire assessment in Section 3.

7 An applicant undergoing re-assessmentneed only be re-assessed in thosesections which he or she previouslyfailed.

8 Any other partial or full waiver ofassessment should only be permitted incompliance with guidelines,determinations or advice given to thecertificate assessor by the certifyingauthority.

9 The model answers to the tasks for allpossible combinations of specificationsand the completion of each section areprovided on pages 12 - 14.

10 Assessors should highlight in Tasks 1-7the combination of variables required forcompletion of each task.


INSTRUCTIONS TO APPLICANTS

1 Equipment

To complete this assignment you willneed pens or pencils.

You MAY use an eraser and a calculator.

BOOKS AND PREPARED NOTES ARENOT TO BE USED.

2 Reading time

You have five minutes to read theassignment and the attached materialbefore you start writing.

During this five minutes you may ask theassessor questions about the assignmenttasks.

3 The assignment

The assignment contains:

• one task relating to span ropes;

• three tasks relating to gin poles;

• three tasks relating to suspendedscaffolds;

Your assessor will indicate on the taskdirection sheets the specifications you areto use.

WRITE YOUR NAME AT THE TOP OFEACH PAGE.

4 Time allowed

You have 55 minutes to complete allseven tasks.


Directions: Section 1 to 3

Note: The assessor should indicate thecombination of variables required for eachtask.

SECTION ONE:SPAN ROPES

INTRODUCTION

You are required to hang a chain block to lift aload. The chain block will be supported from aninverted snatch block on a span rope fixedbetween two beams.

You have the following information:

1 span between beams:

(a) 10 m or (b) 20 m or (c) 30 m

2 weight of load:

(a) 500 kg or (b) 750 kg or (c) 1.25 t

3 weight of lifting gear and load in haulingpart:

(a) 50 kg or (b) 60 kg or (c) 85 kg

Task 1: Using the combination of variableschosen by the assessor calculate thetension in the span rope when thesag is at its recommended minimum.

SECTION TWO:GIN POLES


INTRODUCTION

You are required to set up a gin pole at themaximum recommended lean to lift a load. Theguys are to be anchored at the minimumrecommended distances from the foot of thepole. The lead rope will run parallel to the pole.


1 length of pole:

(a) 4 m or (b) 8 m or (c) 12 m

2 weight of load:

(a) 4 t or (b) 6 t or (c) 8 t

3 load in lead rope:

(a) 1.2 t or (b) 2.4 t or (c) 4.2 t

Task 2: Using the combination of variableschosen by the assessor calculate theload on the back guy (to the nearestkilogram).

Task 3: Using the combination of variableschosen by the assessor calculate thelean on the pole.

Task 4: Using the combination of variableschosen by the assessor calculate thedistance between the pole heel andthe back guy anchor.


SECTION THREE:SUSPENDED SCAFFOLDS


INTRODUCTION

You are required to erect a suspended scaffoldwith a rope length of 50 m supported from acounterweighted cantilevered suspension rig.


1 Type of cradle:a individual cradle supported from two

needles with one suspension rope andone scaffolding hoist per needle. Thecradle has a dead load of 100 kg and aworking load limit of 250 kg.

ORb work cage supported from one needle

with one suspension rope and onescaffolding hoist. The work cage has adead load of 75 kg and a working loadlimit of 200 kg.

OR

c boatswain's chair supported from oneneedle with one suspension rope andone scaffolding hoist. The seat has adead load of 15 kg and a working loadlimit of 150 kg.

2 Type of scaffolding hoist:

a electrically powered hoist with a ratedSWL hoisting of 750 kg using asuspension rope with a dead load of36 kg per 100 m and a load limitingdevice set at the maximum allowableoverload.

OR

b electrically powered hoist with a ratedSWL hoisting of 500 kg using asuspension rope with a dead load of31 kg per 100 m and a load limitingdevice set at the maximum allowableoverload.

ORc manually operated hoist with a dead

load of 35 kg and a rated SWL hoistingof 350 kg using a suspension rope witha dead load of 26 kg per 100 m.

3 Description of needle:

a outboard of 1.0 m and an inboard of5.5 m.

OR

b outboard of 0.75 m and an inboard of4.0 m.

ORc outboard of 0.5 m and an inboard of

3.0 m.

Task 5: Using the combination of variableschosen by the assessor calculate themaximum rope tension.

Task 6: Using the combination of variableschosen by the assessor calculate theminimum guaranteed breaking loadof the suspension rope.

Task 7: The counterweights each weigh25 kg. Using the combination ofvariables chosen by the assessorcalculate the number ofcounterweights required at theinboard end of the needle.


Model answers

SECTION ONE:SPAN ROPES

Note: This section contains one task (Task1). In order to pass this section theapplicant must provide the correctsolution.

Task answer and commentary

Task 1:

Note: This task assesses the applicant'sunderstanding of the forces applied to aspan rope and the ability to calculate ropetension using the common formula.

The common formula is:

Tension in span rope = W x L 4 x S

Where W is the total head load (in kg), L is thespan (in m) and S is the sag (in m).

The minimum recommended sag is 5% (or 1/20)of the span.

There are nine different solutions for the 27possible combinations. This is because thespan ÷ the sag is a constant ratio. The ninesolutions are as follows:

Load Gear weight Ropeweight & hauling load tension

(a) (a) 2750 kg(a) (b) 2800 kg(a) (c) 2925 kg(b) (a) 4000 kg(b) (b) 4050 kg(b) (c) 4175 kg(c) (a) 6500 kg(c) (b) 6550 kg(c) (c) 6675 kg

SECTION TWO:GIN POLES

Note: This section contains three tasks(Tasks 2!!!!4). In order to pass this section,the applicant must provide a correctsolution to each task.


Task 2:

Note: This task assesses the applicant'sability to use either of the common formulaefor calculating rope tension in the back guyof a gin pole.

Tension in back guy =Total head load x 1.125

8

or

Total head load7

The solutions for the nine possible combinationsare as follows:

For Weight (a) and Load (a): 731 or 743kgFor Weight (a) and Load (b): 900 or 914kgFor Weight (a) and Load (c): 1153 or 1171kgFor Weight (b) and Load (a): 1013 or 1029kgFor Weight (b) and Load (b): 1181 or 1200kgFor Weight (b) and Load (c): 1181 or 1457kgFor Weight (c) and Load (a): 1181 or 1314kgFor Weight (c) and Load (b): 1181 or 1486kgFor Weight (c) and Load (c): 1181 or 1743kg

Task 3:

Note: This task assesses the applicant’sability to apply the common formula forcalculating the maximum lean in a gin pole.

Maximum lean = Pole length ÷ 10

The solutions for the three possible pole lengthsare as follows:

(a) 400 mm (b) 800 mm (c) 1200 mm


Task 4:

Note: This task assesses theapplicant's ability to apply the commonformula for calculating the distance from thegin pole to its back anchor.

Minimum distance = Pole length x 1.5

The solutions for the three possible pole lengthsare:

(a) 6 m (b) 12 m (c) 18 m

SECTION THREE:SUSPENDED SCAFFOLDS

Note: This section contains three tasks(Tasks 5-7). In order to pass this section,the applicant must provide a correct solutionto each task.


Task 5:

Note: This task assesses the applicant'sunderstanding of forces applied insuspended scaffolding and the ability tocalculate the tension in a suspension ropeas specified in Clauses 4.5 and 4.7 ofAS 1576.4.

As hoists (a) and (b) are electrically powered,the solution is calculated using theformula:

Rope tension =(Hoist SWL x 1.25) + rope DL

As hoist (c) is manually powered, the solution iscalculated using the formula:

Rope tension =rope DL + Hoist DL + (cradle DL ÷ No. of

hoists) + cradle WLL

The solutions for the three hoists are as follows:

For Hoist (a):955.5 kg [(750 kg x 1.25) + (36 kg/2)]

For Hoist (b):

640.5 kg [(500 kg x 1.25) + (31 kg/2)]

For Hoist (c): as follows:

With Cradle (a):348 kg [(26 kg/2) + 35 kg + (100 kg/2) + 250 kg]

With Cradle (b):323 kg [(26 kg/2) + 35 kg + 75 kg + 200 kg]

With Cradle (c):213 kg [(26 kg/2) + 35 kg + 15 kg + 150 kg]

Task 6:

Note: This task assesses the applicant'sunderstanding of the ratio between the ratedSWL of a scaffolding hoist and the breakingload of its suspension rope and the ability tocalculate breaking load.

As specified by Clause 5.4.2 (b) of AS 1418.2,the safety factor for a suspension rope is 7 formanual hoists and 10 for powered hoists.Therefore the breaking load is:

For Hoist (a):7,500 kg [750 kg x 10]

For Hoist (b):5,000 kg [500 kg x 10]

For Hoist (c):2,450 kg [350 kg x 7]

Task 7:

Note: This task assesses the applicant’sunderstanding of levers and ability to applythe common formula for calculating thecounterweighting of a suspension rigneedle.

The formula is:

No. of counterweights =3 x Rope tension (in kg) x Outboard (in mm) Inboard (in mm) x mass of counterweight

(in kg)


The solutions to the 27 possible combinationsare as follows:

For Needle (a)

with: Cradle Hoist a a 21

a b 14 a c 8 b a 21 b b 14 b c 8 c a 21 c b 14 c c 5

For Needle (b)

with: Cradle Hoist a a 22 a b 15 a c 8 b a 22 b b 15 b c 8 c a 22 c b 15 c c 5

For Needle (c)

with: Cradle Hoist a a 20

a b 13 a c 7 b a 20 b b 13 b c 7 c a 20 c b 13 c c 5

END OF MODEL ANSWERS


Advanced Rigging Written Assignment

RELATIONSHIP TO THE NATIONAL CERTIFICATION STANDARD


The tasks set within the three sections of thewritten assignment are intended to assess theconceptual understanding, numeracy and theability to interpret technical data, additional tothat required for Dogging and for Basic andIntermediate Rigging required to carry out unitsof competence 1.0 and 2.0 for AdvancedRigging prescribed by Schedule A of theNational Occupational Health and SafetyCertification Standard for Users and Operatorsof Industrial Equipment.





The tasks of the written assignment reflect theNational Standard's following performancecriteria: 1.1.13, 1.1.18, 1.2.7, 2.1.3, 2.2.6,2.2.12, 2.3.2 and 2.2.4.

Relevant performance criteria which are notreflected in the Advanced Rigging Assessmenthave been covered in the Dogging, BasicRigging and/or Intermediate Riggingassessments and do not require furtherassessment.

THE RANGE STATEMENT

The tasks making up the written assignmentassess conceptual understanding in relation tospan ropes, gin poles and suspended scaffolds.

They were selected because they represent thetypical level of conceptual understanding anduse of mathematical formulae required toundertake the range of rigging work listed in theNational Standard's range statement forAdvanced Rigging.

The model solutions apply the requirements ofthe National Standard for Plant and the designrequirements of its referenced Standards AS1418, SAA Crane Code, and AS 1576,Scaffolding, to the obligations underState/Territory occupational health and safetylegislation of a person who carries out workwithin the scope of the Advanced RiggingCertificate of Competency.




FOR THE

ADVANCED RIGGING


PART THREE

KNOWLEDGE ASSESSMENT

(Questions and Answers)

Advanced Rigging Knowledge AssessmentCONTENTS

Page

ASSESSOR GUIDELINES SPECIFICIntroductory notes 18

KNOWLEDGE QUESTIONSSection One: Fabricated hung scaffold requirements 20

Section Two: Suspended scaffold requirements 20

MODEL ANSWERSSection One: Fabricated hung scaffold requirements 22

Section Two: Suspended scaffold requirements 22

LIST OF REFERENCES 23


ASSESSMENT STANDARD 25

Advanced Rigging Knowledge April 1994 18


Introductory notes Knowledge

1 The Advanced Rigging Certificateencompasses the requirements for theBasic and Intermediate RiggingCertificates. It is preferable that anapplicant for the Advanced RiggingCertificate already holds a Basic andIntermediate Rigging Certificate.Otherwise the assessment for anapplicant for the Advanced Certificatemust incorporate the requirements of theBasic, Intermediate and AdvancedCertificate assessment.

2 The knowledge assessment forAdvanced Rigging is one of threeassessments which applicants must passto qualify for an Advanced RiggingCertificate of Competency. The othercomponents are a written assignmentand a performance assessment.

3 The knowledge assessment forAdvanced Rigging is a `closed book'short-answer examination divided intotwo sections. The questions in eachsection are to be randomly selected froma bank which contains a total of 41questions.

In the knowledge assessment thecertificate assessor evaluates the extentof the applicant's underpinningknowledge. On completion of theassessment the assessor will determinewhether the applicant can safelyundertake, without direct supervision, thetasks encompassed within units ofcompetence 1.0 and 2.0 comprisingAdvanced Rigging prescribed bySchedule A of the National OccupationalHealth and Safety Certification Standardfor Users and Operators of IndustrialEquipment(NOHSC: 1006, 1992).

4 The relationship between the questionsand the Standard's prescribedperformance criteria is set out on page 5.

5 A full knowledge assessment consists of14 questions and can take up to 15minutes to complete. The time permittedfor partial assessments should beapproximately one minute per question.

There are two ways in which theknowledge assessment can beconducted. These are:

• By written examination. Where thismethod is used, the applicant mustbe given the chance to be orallyassessed on any questions whichare not completed in writing;

• By oral examination. Where thismethod is used, the assessor willenter the applicant's answers on tothe examination paper.

6 To pass the assessment, the applicantmust correctly answer (either in writing ororally) a majority of the randomlyselected questions in each of thefollowing sections:

Section 1: Fabricated hung scaffoldrequirments(7 selected from 20)

Section 2: Suspended scaffoldrequirements(7 selected from 21)

7 An applicant who holds a NationalScaffolding Certificate, or who haspreviously passed a knowledgeassessment for Basic Scaffolding, doesnot require assessment in Section 1.

An applicant who holds an AdvancedScaffolding Certificate, or who haspreviously passed a knowledgeassessment for Advanced Scaffolding,does not require assessment inSection 2.

8 An applicant undergoing re-assessmentneed only be re-assessed in thosesections in which he or she previouslyfailed to answer a majority of selectedquestions correctly.


9 Any other partial or full waiver ofknowledge assessment should only bepermitted in compliance with guidelines,determinations or advice given to thecertificate assessor by the certifyingauthority.

10 The model answers to the bank ofquestions are on pages 22-23.

Where appropriate, model answersinclude acceptable alternatives given inbrackets.

11 Applicants may use alternativecompatible metric units from those givenin the model answers. For example,where the model answer is 250 mm, ananswer of 25 cm or 0.25 m is acceptable.

12 Where the model answer includes a unitof measurement, an applicant's answerwhich is not qualified with a unit ofmeasurement is unacceptable. Forexample, where the model answer is 250mm, an answer of 250 is NOTacceptable.

14 An applicant who uses an imperial unit ofmeasurement in an answer must begiven the opportunity by means of oralquestioning to convert the answercorrectly to an appropriate metricmeasurement. A failure to convert animperial measurement correctly isregarded as a failure.


Advanced Rigging Knowledge Questions

SECTION ONE:FABRICATED HUNG SCAFFOLDS

Note: Select seven questions at randomfrom the following 20. To pass this section,the applicant must correctly answer at leastfour of the selected questions.

1 (a) What is the maximum total load perbay for persons and materials on alight duty working platform?

1 (b) What is the maximum total load perbay for persons and materials on amedium duty working platform?

1 (c) What is the maximum total load perbay for persons and materials on aheavy duty working platform?

1 (d) When a flexible steel wire rope isused to support a hung scaffold, whatis its maximum allowable load?

1 (e) When a chain is used to support ahung scaffold, what is its maximumallowable load?

1 (f) What fraction of the duty live load perplatform per bay are standardsassumed to be carrying?

1 (g) What is the minimum width of a lightduty working platform?

1 (h) What is the minimum width of amedium duty working platform?

1 (i) What is the minimum width of aheavy duty working platform?

1 (j) When is platform edge protectiongenerally required?

1 (k) What is the minimum distance atoeboard must extend above the topsurface of the platform?

1 (l) Would you use a fibre rope as aguardrail on a scaffold?

1 (m) Would you use a flexible steel wirerope as a guardrail on a scaffold?

1 (n) What is the minimum height abovethe platform of a guardrail?

1 (o) What is the maximum height abovethe platform of a guardrail?

1 (p) What must be provided between theguardrail and the toeboard?

1 (q) Would you use an extension ladder toprovide access to a scaffoldplatform?

1 (r) What grade of ladder is prohibited foraccess to scaffolds?

1 (s) What is the minimum and maximumslopes at which a portable ladder canbe pitched to provide access to ascaffold?

1 (t) What is the minimum height aportable access ladder must extendabove the landing?

SECTION TWO:SUSPENDED SCAFFOLDREQUIREMENTS

Note: Select seven questions at randomfrom the following 21. To pass this section,the applicant must correctly answer at leastfour of the selected questions.

2 (a) What is the minimum-rated workingload for a trolley used to support asuspension rope?

2 (b) Would you fix a cradle's working loadlimit sign to the inside or to theoutside of the cradle?


2 (c) What is the minimum cradle width fora double rope suspended scaffold?

2 (d) What is the maximum cradle width fora double rope suspended scaffold?

2 (e) What is the minimum width of a swingstage cradle?

2 (f) What is the maximum width of aswing stage cradle?

2 (g) What is the minimum width of a workcage?

2 (h) What is the maximum width of a workcage?

2 (i) What is the minimum height of astabilizing sheave above the platformof a work cage?

2 (j) Would you fix the inboard end of aneedle with friction anchors?

2 (k) Can bags of sand be used tocounterweight a needle?

2 (l) Would you use counterweights to fixa needle which supports twosuspension ropes?

2 (m) What is the maximum rope tensionallowed on a shackle used to supporta suspension rope?

2 (n) What is the maximum rope tensionallowed on a choked sling used tosupport a suspension rope?

2 (o) Where two trolleys are used tosupport a swing stage, how wouldyou stop them from spreading?

2 (p) When a drum-type scaffolding hoist isat its lowest point, how many fullturns of rope should remain on thedrum?

2 (q) With a fully-loaded drum-typescaffolding hoist, how far should thedrum flange extend beyond the built-up rope?

2 (r) When a climber-type scaffolding hoistis at its lowest point, what is theminimum length of spare rope?

2 (s) Would you use bulldog grips tosecure a suspension rope?

2 (t) What type of suspended scaffolddoes not need a protective device foreach scaffolding hoist?

2 (u) What type of scaffolding hoist mustbe fitted with a load limiting device?

END OF QUESTIONS


Model answers

SECTION ONE:FABRICATED HUNG SCAFFOLDREQUIREMENTS

Question Answer Reference(A Guide to Rigging, November 1998 Edition

1 (a) 225 kg (or 2.2 kN) Page 186

1 (b) 450 kg (or 4.4 kN) Page 186

1 (c) 675 kg (or 6.6 kN) Page 186

1 (d) one sixth of the Page 187breaking load

1 (e) one sixth of the Page 187breaking load

1 (f) one third Page 187

1 (g) 450 mm Page 186(or 2 planks)

1 (h) 900 mm Page 186(or 4 planks)

1 (i) 1000 mm Page 186 (or 5 planks)

1 (j) Where a person Page 186or object could fallmore than 2 m

1 (k) 150 mm Page 186

1 (l) No Page 186

1 (m) No Page 186

Question Answer Reference

1 (n) 900 mm Page 186

1 (o) 1100 mm Page 186

1 (p) Midrails Page 186(or infill,or brickguards,or mesh)

1 (q) No Page 187

1 (r) Domestic Page 187grade

1 (s) 4 in 1 and6 in 1 Page 187

1 (t) 900 mm Page 187

SECTION TWO:SUSPEND SCAFFOLD REQUIREMENTS


2 (a) 500 kg Page 197

2 (b) To the inside Page 192

2 (c) 900 mm Page 192

2 (d) 1.7 m Page 192

2 (e) 450 mm Page 192



2 (f) 900 mm Page 192

2 (g) 750 mm Page 192

2 (h) 1.5 m Page 192

2 (i) 2 m Page 192

2 (j) No Page 196

2 (k) No Page 196

2 (l) No Page 196

2 (m) 80% of rated Page 197working load(or 80% ofSWL)

2 (n) 40% of rated Page 197working load(or 40% ofSWL)

2 (o) Connect Page 197them witha spacer tie(or spreader bar)

2 (p) 3 Page 192

2 (q) 2 rope Page 192diameters

2 (r) 1 m Page 192

2 (s) No Page 192

Question Answer Reference(Guidelines for Scaffolding)

2 (t) A double Page 190ropesuspendedscaffold

2 (u) An Page 190electricallypoweredscaffolding hoist

END OF MODEL ANSWERS

LIST OF REFERENCES

The sole direct reference used for thisassessment is:

AS/NZS XXXX, Guidelines for Scaffolding

Please note: This reference is currently beingupdated for publication. When available, thisassessment instrument will be reviewed toensure accuracy of questions, answers andreferenced clauses. It is also expected that theforthcoming 1994 edition of A Guide forRiggers, to be published by the WorkCoverAuthority of New South Wales will include allthe necessary information for an applicantpreparing for the Advanced Rigging knowledgeassessment.


Advanced RiggingΚ nowledge Questions

RELATIONSHIP TO THE NATIONAL CERTIFICATION STANDARD


The questions selected at random from thetwo sections of the knowledge assessmentare intended to assess underpinningknowledge additional to the knowledgerequired for Basic and Intermediate Riggingwhich is required to carry out units ofcompetence 1.0 and 2.0 for AdvancedRigging prescribed by Schedule A of theNational Occupational Health and SafetyCertification Standard for Users andOperators of Industrial Equipment.





The relationship between each group ofquestions and the National Standard'sperformance criteria is as follows:

Section 1: Fabricated Hung ScaffoldRequirements.

These questions reflectperformance criteria 1.1.2,1.1.5, 1.2.6, 1.1.12, 1.1.13,1.1.16, 1.1.18, 2.2.2, 2.3.5,2.4.3 and 2.4.4.

Section 2: Suspended ScaffoldRequirements.

These questions reflectperformance criteria 1.1.1,1.1.2, 1.1.5, 1.1.6, 1.1.16,1.1.18, 1.2.5, 2.1.2, 2.1.3,2.3.1, 2.3.2, 2.3.3, 2.4.4 and2.5.1.

Relevant performance criteria which are notreflected in the Advanced Riggingassessment have been covered in theDogging assessment and/or the BasicRigging and Intermediate Riggingassessments and do not require furtherassessment.

THE RANGE STATEMENT

The bank of questions assesses knowledgewhich directly relates to theerection/dismantling of the two forms ofscaffolding listed in the National Standard'sRange Statement for Advanced Rigging.

The model answers apply the requirements of theNational Standard for Plant and its referencedStandard AS 1576, Scaffolding, to the obligationsunder State/Territory occupational health andsafety legislation of a person who erects, alters ordismantles scaffolding within the scope of theAdvanced Rigging Certificate of Competency.


Assessment standard

! Advanced Rigging

Form ofAssessment

Completed withinallowed time

(Yes, No or NA)

Sections Overall result(C or NYC)

1 2 3

Practical skills

Assignment

Knowledge

C = competent NYC = not yet competent NA = not applicable

SummaryApplicant is: • COMPETENT Date: ...............................................(circle the result obtained)

• NOT YET COMPETENT

Name of................................................. Name ofassessor ................................................. applicant .........................................................

Signature .............................................. Signature ..........................................................

Comments/feedback(assessors to make any additional comments which clarify the assessment)

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C2 Slewing Mobile Cranes (up to 20 tonnes)C6 Slewing Mobile Cranes (up to 60 tonnes)CN Non-Slewing Mobile CranesCV Vehicle Loading Cranes

DG Dogging

HM Hoists - Material HoistsHP Hoists - Personnel & Materials

LF Forklift Truck

RA Advanced RiggingRB Rigging BasicRI Rigging Intermediate

SA Advanced ScaffoldingSB Basic ScaffoldingSI Intermediate Scaffolding

WP Boom-type Elevated Work Platforms● VL - Vertical Lift ● SL - Scissor Lift - Self Propelled● TL - Trailer Lift ● BL - Boom Lift - Self Propelled● TM - Truck Mounted Boom Lift

Height Safety RegulationsRed CardBoat LicenceEarth Moving -● Bobcat ● Excavator ● Backhoe● Dozer ● Frontend Loader

Refresher Training - individuals and small groupsNeil Francis, ManagerNeil Francis, ManagerMobile:Mobile: 0419 592 4040419 592 404Freecall: Freecall: 1800 064 9661800 064 966

P.O. Box 1103, Moe Vic. 3825Fax: (03) 5126 3210

Email: [email protected]

ABN: 85 066 339 110

Documents

Book - RA Advanced Rigging