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Evidence Guide: DEFDV014B - 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

 

DEFDV014B - 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. Work task and worksite data are determined and analysed to determine the specific requirements for the concrete.
  2. Work plan is developed consistent with the dive plan.
  3. Concretingequipment is selected, inspected and prepared including protective equipment.
  4. Concreting equipment is secured safely to/from the dive site.
  5. Access obstructions and other hazards are assessed and action is taken to remove/reduce the risk.
Work task and worksite data are determined and analysed to determine the specific requirements for the concrete.

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Work plan is developed consistent with the dive plan.

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Concretingequipment is selected, inspected and prepared including protective equipment.

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Concreting equipment is secured safely to/from the dive site.

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Access obstructions and other hazards are assessed and action is taken to remove/reduce the risk.

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Concrete underwater site

  1. Work-safe area is established at the worksite.
  2. Site is cleared and levelled in preparation for the pour.
  3. Formwork is assembled including stripping agents.
  4. Reinforcing bars, rods, stirrups and mesh, bar chairs and spacers are positioned.
  5. Cement is mixed in accordance with the setting and strength specifications.
  6. Location and safety of divers is confirmed prior to commencing the pour.
  7. Cement is delivered to the site with a consistent flow.
  8. Concrete is spread to the required levels incorporating expansion joints.
  9. Concrete is screeded to a level and the surface is finished using floats or brooms.
  10. Concrete is protected during curing.
Work-safe area is established at the worksite.

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Site is cleared and levelled in preparation for the pour.

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Formwork is assembled including stripping agents.

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Reinforcing bars, rods, stirrups and mesh, bar chairs and spacers are positioned.

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Cement is mixed in accordance with the setting and strength specifications.

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Location and safety of divers is confirmed prior to commencing the pour.

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Cement is delivered to the site with a consistent flow.

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Concrete is spread to the required levels incorporating expansion joints.

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Concrete is screeded to a level and the surface is finished using floats or brooms.

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Concrete is protected during curing.

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Conclude underwater concreting

  1. Environmental impact arising from the concreting is minimised and waste products and formwork are recovered.
  2. Concreting and protective equipment are de-serviced and stored after use.
Environmental impact arising from the concreting is minimised and waste products and formwork are recovered.

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Concreting and protective equipment are de-serviced and stored after use.

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Assessed

Teacher: ___________________________________ Date: _________

Signature: ________________________________________________

Comments:

 

 

 

 

 

 

 

 

Instructions to Assessors

Evidence Guide

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

Assessment must confirm the ability to attend to personal and collective safety; and to consider the environmental impact as part of the dive plan.

Consistency in performance

Competency should be demonstrated during a work task where the diver conducts an underwater concreting task such as the reinforcement of pier legs, the placement of footings or laying of a slab or ramp.

Context of and specific resources for assessment

Context of assessment

Competency should be assessed in the ocean.

When practicable, assessment should relate to the diver’s vocational focus.

Specific resources for assessment

Access to a dive location, a complete range of concrete ingredients and concreting equipment.

Required Skills and Knowledge

This describes the essential skills and knowledge and their level, required for this unit.

Required Skills

establish formwork

mix and pour cement

operate cement tools and equipment

screed concrete

Required Knowledge

concreting on land

dive equipment

dive physics

general occupational/diving safety awareness

oceanography

relevant references and Australian Standards

work hazards

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 in the Performance Criteria is detailed below.

Work task may include:

pad foundation

post holes

slabs

trench foundations

Worksite data may include:

current

depth

gradient

hazards

obstacles

temperature

Concrete may vary by:

composition/strength

setting time

Concreting equipment may include:

manual, fuel and electrically operated mixers

shovel

vibrator

Selecting, inspecting and preparing concreting equipment may include:

pre-construction of formwork

pre-mixing

Protective equipment may include:

boots

gloves

Action to remove/reduce the risk may include:

erecting signage

using patrol/sentry craft

Formwork may include:

bracing

edge boards

pegs

struts

Delivery of cement may be via:

manual

pump-line

shute

Protection of concrete may include:

use of plastic sheeting

Environmental impact may include:

contamination of surrounding water (e.g. leaking oil)

physical damage to reef and associated floor eco-systems (e.g. coral)

visual pollution of waste material (e.g. concrete and metal parts)