RIIWMG203E - Drain and dewater civil construction sites

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Unit code: RIIWMG203E | Study level: TAFE


This unit describes the skills and knowledge required to drain and dewater civil construction sites. This includes establishing sedimentation controls, constructing sumps, installing surface or submersible pumps, and draining surface water using surface drains.It applies to those working in operational roles. They generally work under supervision to undertake a prescribed range of functions involving known routines and procedures and take some responsibility for the quality of work outcomes.


For Melbourne campuses

Assessment tasks will be designed to reinforce & extend knowledge and skill competence within set & controlled parameters in accordance with each unit’s learning outcomes & performance criteria requirements, incl the setting of work based practical application tasks designed to provide evidence of competence outcomes, within periodic and scheduled timelines.

Students will be expected to demonstrate the following required skills:
*drain and dewater civil construction sites on at least two occasions, including:

  • dewatering a trench or pit using a pump
  • selecting and establishing sedimentation controls
  • selecting, installing and using surface or submersible pumps
  • pumping and dispersing surface and sub-surface water
  • draining surface water from a site using surface drains.

During the above, the candidate must:
*locate and apply required legislation, documentation, policies and procedures
*identify, report and record hazards and risks
*work with others to drain and dewater civil construction sites that meet required outcomes, including:
*using communication techniques and equipment to convey information to others, including signage to advise others of work activity and exclusion zones
*communicating with others to receive and clarify work instructions
*completing written and verbal reporting requirements and procedures.

Students will also be expected to demonstrate the following knowledge:

*legislation required to drain and dewater civil construction sites
*policies, procedures and documentation required to drain and dewater civil construction sites, including those relating to:

  • hazard and risk management
  • work health and safety
  • emergency response
  • site and equipment safety
  • environmental protection
  • waste management
  • communication techniques and equipment
  • site isolation and traffic control responsibilities
  • operational, maintenance and basic diagnostic procedures
  • project quality requirements
  • work instructions
  • job plans and specifications
  • site requirements
  • manufacturer specifications for required plant and equipment
  • workplace recording and reporting
    *principles and techniques required to drain and dewater civil construction sites, including those relating to:
  • dewatering
  • areas to be drained
  • drainage systems
  • project sites
  • sedimentation controls
  • sump positioning
  • interpreting engineering drawings
    *types, characteristics, technical capabilities and limitations of plant and equipment required to drain and dewater civil construction sites, including:
  • hoses
  • shovels
  • pumps
  • plastic piping
  • silt fences
    *materials safety data sheet (SDS) compliance processes
    *components of job safety analyses (JSAs), job safety environmental analyses (JSEAs), and safe work method statements (SWMs)
    *civil construction terminology relating to draining and dewatering civil construction sites.

Required reading

The qualified trainer and assessor will provide teaching and learning materials as required in the form of workbooks produced by the Polytechnic and/or via the Polytechnic e-learning system.

As part of a course

This unit is studied as part of the following course(s):

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