Unit of competency Outline

Information current as of
20/10/2026 10:01 PM AWST

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Perform concreting in an underwater environment

Perform concreting in an underwater environment

Unit of competency
National Code
DEFDV014B
State Code
AVV15
TGA Status
Replaced
DTWD Status
Replaced
Current Release Number
2.00
Current Release Date
24/01/2013
View on TGA
State Implementation and Classification
Approved Date
Original Release Date
15/03/2012
Nominal Hours
0
Field of Education
040399 - Building, N.e.c.
Description
This unit covers the competency required to concrete simple forms and excavations in an underwater environment.The unit also includes preparing the underwater site for concreting including any necessary excavation and levelling, constructing simple formwork and positioning reinforcement rods and fixed anchorages.The diver will need to prepare the concrete with consideration given to strength and setting periods. The concrete will need to be poured and screeded to the required finish.The diver will be responsible for the recovery of formwork and waste arising from the work task to ensure the preservation of the environment. Finally, the concreting tools must be de serviced and stored appropriately for ongoing use.Note: This Unit of Competency relates, in part, to the existing standards of the Australian Diver Accreditation Scheme (ADAS). All information was correct at the time of development of this Unit of Competency; however, any diver seeking ADAS accreditation should consult ADAS and not rely on the information contained in this unit.
General notes
N/A
Elements and Performance Criteria
1. Prepare for underwater concreting
  • 1.1 Work task and worksite data are determined and analysed to determine the specific requirements for the concrete.
  • 1.2 Work plan is developed consistent with the dive plan.
  • 1.3 Concretingequipment is selected, inspected and prepared including protective equipment.
  • 1.4 Concreting equipment is secured safely to/from the dive site.
  • 1.5 Access obstructions and other hazards are assessed and action is taken to remove/reduce the risk.
2. Concrete underwater site
  • 2.1 Work-safe area is established at the worksite.
  • 2.2 Site is cleared and levelled in preparation for the pour.
  • 2.3 Formwork is assembled including stripping agents.
  • 2.4 Reinforcing bars, rods, stirrups and mesh, bar chairs and spacers are positioned.
  • 2.5 Cement is mixed in accordance with the setting and strength specifications.
  • 2.6 Location and safety of divers is confirmed prior to commencing the pour.
  • 2.7 Cement is delivered to the site with a consistent flow.
  • 2.8 Concrete is spread to the required levels incorporating expansion joints.
  • 2.9 Concrete is screeded to a level and the surface is finished using floats or brooms.
  • 2.10 Concrete is protected during curing.
3. Conclude underwater concreting
  • 3.1 Environmental impact arising from the concreting is minimised and waste products and formwork are recovered.
  • 3.2 Concreting and protective equipment are de-serviced and stored after use.
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)
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.
Replaced By
State Code National Code Title Type
BBD19 DEFWDV014 Perform concreting in an underwater environment Unit of competency
No information