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Evidence Guide: PMC553051B - Produce structural precast concrete

Student: __________________________________________________

Signature: _________________________________________________

Tips for gathering evidence to demonstrate your skills

The important thing to remember when gathering evidence is that the more evidence the better - that is, the more evidence you gather to demonstrate your skills, the more confident an assessor can be that you have learned the skills not just at one point in time, but are continuing to apply and develop those skills (as opposed to just learning for the test!). Furthermore, one piece of evidence that you collect will not usualy demonstrate all the required criteria for a unit of competency, whereas multiple overlapping pieces of evidence will usually do the trick!

From the Wiki University

 

PMC553051B - Produce structural precast concrete

What evidence can you provide to prove your understanding of each of the following citeria?

Prepare mould for casting

  1. Check casting schedule and job specification
  2. Clean and oil moulds according to requirements
  3. Check for mould damage and repair as necessary
Check casting schedule and job specification

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Clean and oil moulds according to requirements

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Check for mould damage and repair as necessary

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Assemble reinforcement cage

  1. Lift preassembled reinforcing sections into mould using good occupational health and safety (OHS) practice
  2. Assemble additional steel to complete cage to drawings and job specification
  3. Fit additional items, such as base plates, tie plates and lifting devices, according to work instructions
  4. Fit hold-ups and hold-downs as appropriate
  5. Place voids or ducts according to work specifications
  6. Run prestressing strands through reinforcing cages as required
  7. Set up guards and comply with OHS requirements for stressing
  8. Tension strands to extension dimensions and/or gauge readings according to works or engineer instructions
  9. Recheck reinforcing cage is in correct position and adjust as necessary
Lift preassembled reinforcing sections into mould using good occupational health and safety (OHS) practice

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Assemble additional steel to complete cage to drawings and job specification

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Fit additional items, such as base plates, tie plates and lifting devices, according to work instructions

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Fit hold-ups and hold-downs as appropriate

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Place voids or ducts according to work specifications

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Run prestressing strands through reinforcing cages as required

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Set up guards and comply with OHS requirements for stressing

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Tension strands to extension dimensions and/or gauge readings according to works or engineer instructions

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Recheck reinforcing cage is in correct position and adjust as necessary

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Close mould and test vibrators

  1. Lift mould sides and additional parts into position and secure to specification
  2. Fit any additional items as required
  3. Seal mould
  4. Fit vibrators to start positions
  5. Test run before casting commences
Lift mould sides and additional parts into position and secure to specification

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Fit any additional items as required

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Seal mould

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Fit vibrators to start positions

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Test run before casting commences

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Pour concrete

  1. Begin casting in accordance with work instructions
  2. Move vibrators and time vibration as required
  3. Screed top surface flat in preparation for final finish if required
  4. Patch product as required
  5. Clean mould and worksite in accordance with OHS requirements
Begin casting in accordance with work instructions

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Move vibrators and time vibration as required

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Screed top surface flat in preparation for final finish if required

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Patch product as required

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Clean mould and worksite in accordance with OHS requirements

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Control concrete quality

  1. Test raw materials as required
  2. Prepare test cylinders and samples as required
  3. Monitor and control concrete mix to keep within specifications
  4. Update all records and file all records and supplier certificates in appropriate place
  5. Raise non-conformance reports as required
Test raw materials as required

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Prepare test cylinders and samples as required

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Monitor and control concrete mix to keep within specifications

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Update all records and file all records and supplier certificates in appropriate place

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Raise non-conformance reports as required

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Cure product

  1. Cover and cure mould and test cylinders in accordance with standard procedures and work instructions
  2. Monitor curing to achieve specified stripping strength
Cover and cure mould and test cylinders in accordance with standard procedures and work instructions

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Monitor curing to achieve specified stripping strength

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Strip and store product

  1. Test samples to ensure specific strength has been achieved
  2. Remove mould sides and store ready for cleaning
  3. If applicable, de-stress in accordance with work procedures and sequences
  4. Ensure unit is lifted according to work instructions and moved to store, supported only on points designated on the drawings
Test samples to ensure specific strength has been achieved

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Remove mould sides and store ready for cleaning

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

If applicable, de-stress in accordance with work procedures and sequences

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Ensure unit is lifted according to work instructions and moved to store, supported only on points designated on the drawings

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Respond to problems

  1. Identify possible routine and non-routine problems in the equipment or process
  2. Determine problems needing action
  3. Determine possible fault causes
  4. Rectify problem using appropriate solution within area of responsibility
  5. Report problems outside area of responsibility to designated person
Identify possible routine and non-routine problems in the equipment or process

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Determine problems needing action

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Determine possible fault causes

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Rectify problem using appropriate solution within area of responsibility

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Report problems outside area of responsibility to designated person

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Control hazards

  1. Identify hazards from the job to be done
  2. Identify other hazards in the work area
  3. Assess the risks arising from those hazards
  4. Implement measures to control those risks in line with procedures
Identify hazards from the job to be done

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Identify other hazards in the work area

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Assess the risks arising from those hazards

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Implement measures to control those risks in line with procedures

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Assessed

Teacher: ___________________________________ Date: _________

Signature: ________________________________________________

Comments:

 

 

 

 

 

 

 

 

Instructions to Assessors

Evidence Guide

The Evidence Guide provides advice on assessment and must be read in conjunction with the performance criteria, required skills and knowledge, range statement and the Assessment Guidelines for the Training Package.

Overview of assessment

The unit will be assessed in as holistic a manner as is practical and may be integrated with the assessment of other relevant units of competency.

Critical aspects for assessment and evidence required to demonstrate competency in this unit

It is essential that the process be understood and that the importance of critical material properties and design characteristics is known. Competence must be demonstrated in the ability to recognise and analyse potential situations requiring action and then in implementing appropriate corrective action.

Consistent performance should be demonstrated. In particular look to see that:

products are made consistently in minimum time and with minimum patching

finishing is within specification/example

good OHS practice is used consistently.

Competence must be demonstrated in the operation of all ancillary equipment to the level required for this unit of competency.

Context of and specific resources for assessment

Assessment will require access to an operating plant over an extended period of time, or a suitable method of gathering evidence of operating ability over a range of situations.

Assessment will occur over a range of situations which will include disruptions to normal, smooth operation.

Simulation or case studies/scenarios may be required to allow for timely assessment of parts of this unit of competency. Simulation should be based on the actual plant and will include 'walk-throughs' of the relevant competency components. A bank of scenarios/case studies/what ifs and questions will be required to probe the reasoning behind observable actions.

Method of assessment

Individual enterprises may choose to add prerequisites and co-requisites relevant to their processes.

Guidance information for assessment

Assessment processes and techniques must be culturally appropriate and appropriate to the language and literacy capacity of the candidate and the work being performed.

Required Skills and Knowledge

Required skills

Required skills include:

recognising conditions which will lead to out of specification product and taking appropriate action

implementing the enterprise's procedures within time constraints and in a manner relevant to the correct use of the equipment

conveying information relevant to the operation clearly and effectively

maintaining appropriate levels of quality assurance

reading and numeracy to interpret workplace documents and technical information

Required knowledge

Required knowledge includes:

principles of concrete mixing (if mixed by operator)

principles of veneer adhesion

principles of concrete finishing

causes of mould wear

results of using worn moulds

problems resulting from mould leakage

reading steel plans

predicting final shape/dimension based on bar size/type and bend radius

principles of reinforcing concrete to specification

principles of fitting accessories to specification

principles of concrete product finishing

reinforcing materials

design factors

fabrication methodologies

effect of water-cement ratio on product

importance of vibration on compaction

required concrete cover of reinforcing

hazards from critical stages of prestressing reinforcement (placement, stressing, de-stressing, cutting, etc)

concrete sampling and testing procedures

non-conformance procedures

underlying causes of faults such as precipitated by:

material inconsistencies

mixing irregularities

finishing difficulties concrete

mould anomalies

casting/operating conditions

concrete mixture errors

vibration

aggregate size

reinforcing design/placement

setting/curing time/rate

Range Statement

The range statement relates to the unit of competency as a whole. It allows for different work environments and situations that may affect performance. Bold italicised wording, if used in the performance criteria, is detailed below. Essential operating conditions that may be present with training and assessment (depending on the work situation, needs of the candidate, accessibility of the item, and local industry and regional contexts) may also be included.

Procedures

All operations are performed in accordance with standard procedures and work instructions

Typical problems

Typical problems may include:

slippage, breaking of tensioned strands

mould leakage

compaction in areas with high reinforcement content (end blocks and haunches)

compact product with tight bends/clearances

polystyrene blocks (which may be used in formwork to lighten products) may float to surface on vibration

polystyrene blocks may move sideways undetected, reducing wall thickness

adjustment to take account of variables such as weather

variations in cement/water ratio

OHS

All operations are subject to stringent OHS requirements and these must not be compromised at any time. Where there is an apparent conflict between performance criteria and OHS requirements, the OHS requirements take precedence