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Evidence Guide: DEFWDV014 - Perform concreting in an underwater environment

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

 

DEFWDV014 - Perform concreting in an underwater environment

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

Prepare for underwater concreting

  1. Identify and analyse work task and worksite data to determine the specific requirements for the concrete
  2. Develop work plan consistent with dive plan
  3. Select, inspect and prepare equipment
  4. Secure concreting equipment safely to/from dive site
  5. Assess access obstructions and other underwater hazards to determine risks and to manage risk control measures in accordance with dive plan
Identify and analyse work task and worksite data to determine the specific requirements for the concrete

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Develop work plan consistent with dive plan

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Select, inspect and prepare equipment

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Secure concreting equipment safely to/from dive site

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Assess access obstructions and other underwater hazards to determine risks and to manage risk control measures in accordance with dive plan

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Concrete underwater site

  1. Determine safety of work area at worksite
  2. Prepare site in accordance with work plan
  3. Assemble formwork to meet task requirements
  4. Position reinforcing bars, rods, stirrups and mesh, bar chairs and spacers as required
  5. Mix cement and deliver to site in accordance with work plan and concrete strength specifications
  6. Take measures to confirm location and safety of divers prior to commencing pour, in accordance with operational procedures
  7. Spread and screed concrete in accordance with work plan
  8. Undertake tasks to finish surface, ensuring it is protected during curing
Determine safety of work area at worksite

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Prepare site in accordance with work plan

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Assemble formwork to meet task requirements

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Position reinforcing bars, rods, stirrups and mesh, bar chairs and spacers as required

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Mix cement and deliver to site in accordance with work plan and concrete strength specifications

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Take measures to confirm location and safety of divers prior to commencing pour, in accordance with operational procedures

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Spread and screed concrete in accordance with work plan

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Undertake tasks to finish surface, ensuring it is protected during curing

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Complete underwater concreting

  1. Minimise environmental impact arising from concreting and recover waste materials on completion of task
  2. De-service and store all equipment, in accordance with operational procedures
Minimise environmental impact arising from concreting and recover waste materials on completion of task

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

De-service and store all equipment, in accordance with operational procedures

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Assessed

Teacher: ___________________________________ Date: _________

Signature: ________________________________________________

Comments:

 

 

 

 

 

 

 

 

Instructions to Assessors

Evidence Guide

ELEMENTS

PERFORMANCE CRITERIA

Elements describe the essential outcomes.

Performance criteria describe the performance needed to demonstrate achievement of the element.

1

Prepare for underwater concreting

1.1

Identify and analyse work task and worksite data to determine the specific requirements for the concrete

1.2

Develop work plan consistent with dive plan

1.3

Select, inspect and prepare equipment

1.4

Secure concreting equipment safely to/from dive site

1.5

Assess access obstructions and other underwater hazards to determine risks and to manage risk control measures in accordance with dive plan

2

Concrete underwater site

2.1

Determine safety of work area at worksite

2.2

Prepare site in accordance with work plan

2.3

Assemble formwork to meet task requirements

2.4

Position reinforcing bars, rods, stirrups and mesh, bar chairs and spacers as required

2.5

Mix cement and deliver to site in accordance with work plan and concrete strength specifications

2.6

Take measures to confirm location and safety of divers prior to commencing pour, in accordance with operational procedures

2.7

Spread and screed concrete in accordance with work plan

2.8

Undertake tasks to finish surface, ensuring it is protected during curing

3

Complete underwater concreting

3.1

Minimise environmental impact arising from concreting and recover waste materials on completion of task

3.2

De-service and store all equipment, in accordance with operational procedures

Required Skills and Knowledge

ELEMENTS

PERFORMANCE CRITERIA

Elements describe the essential outcomes.

Performance criteria describe the performance needed to demonstrate achievement of the element.

1

Prepare for underwater concreting

1.1

Identify and analyse work task and worksite data to determine the specific requirements for the concrete

1.2

Develop work plan consistent with dive plan

1.3

Select, inspect and prepare equipment

1.4

Secure concreting equipment safely to/from dive site

1.5

Assess access obstructions and other underwater hazards to determine risks and to manage risk control measures in accordance with dive plan

2

Concrete underwater site

2.1

Determine safety of work area at worksite

2.2

Prepare site in accordance with work plan

2.3

Assemble formwork to meet task requirements

2.4

Position reinforcing bars, rods, stirrups and mesh, bar chairs and spacers as required

2.5

Mix cement and deliver to site in accordance with work plan and concrete strength specifications

2.6

Take measures to confirm location and safety of divers prior to commencing pour, in accordance with operational procedures

2.7

Spread and screed concrete in accordance with work plan

2.8

Undertake tasks to finish surface, ensuring it is protected during curing

3

Complete underwater concreting

3.1

Minimise environmental impact arising from concreting and recover waste materials on completion of task

3.2

De-service and store all equipment, in accordance with operational procedures

Evidence required to demonstrate competence in this unit must be relevant to and satisfy all of the requirements of the elements and performance criteria on at least one occasion and include:

applying relevant legislation, standards and organisational policies and procedures

applying underwater risk control measures and work plan requirements

calculating cement mix ratios according to strength specifications

completing underwater concrete work including:

assembling formwork and stripping agent

clearing and levelling site to prepare for pouring

ensuring a consistent pour when delivering cement

operating cement tools and equipment

protecting concrete during curing

conducting at least one of the following underwater concreting tasks:

reinforcing pier legs

placing footings

laying a slab or ramp.

developing underwater concreting work plan

planning underwater concreting work

using floats and brooms to finish surface.

Evidence required to demonstrate competence in this unit must be relevant to and satisfy all of the requirements of the elements and performance criteria and include knowledge of:

concrete setting and strength specifications

dive equipment

dive physics

dive physiology and medicine including:

heat and cold illnesses

compression illnesses

decompression illnesses

diving descent and ascent techniques

general diving safety awareness including:

diving in harbours

diving in tidal waters, currents and tides

diving on and/or near a ship’s bottom

lost/separated

entrapment/foul lines

marine animal threats

pollution/weeds

working in confined spaces

oceanography

relevant legislation, standards, and organisational policies and procedures

relevant risk mitigation organisational procedures including workplace hazard mitigation.

Range Statement

Range is restricted to essential operating conditions and any other variables essential to the work environment.

Non-essential conditions may be found in the Companion Volume Implementation Guide.