NZQA registered unit standard
26797 version 1
Page 1 of 4
Title
Plan and supervise drainage for infrastructure works
Level
5
Purpose
Credits
10
This unit standard is for people who have an understanding of
the construction of drainage systems and have the
responsibility and authority to plan the construction of drainage
systems and supervise the installation of subsoil drainage and
the construction of open drains for infrastructure works.
People credited with this unit standard are able to plan the
construction of drainage systems for infrastructure works;
supervise the installation of subsoil drainage; and supervise the
construction of open drains.
Classification
Infrastructure Works > Infrastructure Works Supervision
Available grade
Achieved
Entry information
Recommended skills
and knowledge
Unit 12569, Demonstrate knowledge of the design,
construction, and maintenance of road drainage systems, or
demonstrate equivalent knowledge and skills.
Explanatory notes
1
Assessment against this unit standard must take place in a workplace environment.
Assessment parameters will depend on company and site specific equipment,
procedures, and practices. Practices must reflect industry best practice and comply
with legislative requirements.
2
The following legislation, regulations, code of practice, and Standards must be
complied with as appropriate to the context of assessment against this unit standard:
Health and Safety in Employment Act 1992; Resource Management Act 1991; Health
and Safety in Employment Regulations 1995; local authority requirements; Approved
Code of Practice for Safety in Excavation and Shafts for Foundations (Wellington:
Department of Labour, 1995) available at http://www.dol.govt.nz; AS/NZS 1254:2010
PVC-U pipes and fittings for stormwater and surface water applications; AS/NZS
1260:2009 PVC-U pipes and fittings for drain, waste and vent application; AS/NZS
1462: series Methods of test for plastics pipes and fittings; AS/NZS 2033:2008
Installation of polyethylene pipe systems; AS/NZS 3725:2007 Design for installation
of buried concrete pipes; AS/NZS 4058:2007 Precast concrete pipes (pressure and
non-pressure); NZS 4406:1986 Helical lock-seam corrugated steel pipes – Design
and installation; available at http://www.standards.co.nz.
Infrastructure ITO
SSB Code 101813
 New Zealand Qualifications Authority 2016
NZQA registered unit standard
3
26797 version 1
Page 2 of 4
Definitions
Company requirements include the policy, procedures, and methodologies of the
company. They include legislative and regulatory requirements which may apply
across the company or to a specific site. Requirements are documented in the
company’s health and safety plans, traffic management plans, contract work
programmes, quality assurance programmes, policies, and procedural documents.
Contract specifications include plans, diagrams, and special technical conditions.
They do not include special administrative conditions.
Manufacturer’s instructions may include specifications, safety data sheets, and
instructions for installation, handling, use, and maintenance.
Technical instructions mean the defined procedures for the method of carrying out
the construction process. For this unit standard, they include manufacturers’
instructions, company procedural documents, local authority requirements, and
contract specifications.
Outcomes and evidence requirements
Outcome 1
Plan the construction of drainage systems for infrastructure works.
Range
one subsoil system, one open drainage system.
Evidence requirements
1.1
Plant and equipment resources for constructing drainage systems are
determined in accordance with contract specifications and company
requirements.
1.2
Material resources for constructing drainage systems are determined in
accordance with contract specifications and company requirements.
Range
may include but is not limited to – geotextile filter fabrics, bedding
materials, pipes, jointing materials.
1.3
Personnel resources for constructing drainage systems are determined in
accordance with contract specifications and company requirements.
1.4
Planning ensures that health, safety, and environmental requirements for
constructing drainage systems are confirmed in accordance with legislative and
company requirements.
1.5
Planning ensures that quality requirements for the construction of drainage
systems are confirmed in accordance with technical instructions.
Infrastructure ITO
SSB Code 101813
 New Zealand Qualifications Authority 2016
NZQA registered unit standard
26797 version 1
Page 3 of 4
Outcome 2
Supervise the installation of subsoil drainage.
Evidence requirements
2.1
Supervision ensures that subsoil drainage system is installed to achieve steady
flow and minimal sedimentation.
2.2
Supervision ensures that subsoil drains are installed in accordance with
contract specifications.
may include – cut off drain, swamp drainage.
Range
2.3
Supervision ensures that subsoil drainage pipes are placed and bedded in
accordance with contract specifications and manufacturer’s instructions.
may include – metal pipe, concrete pipe, timber, precast section,
PVC, polyethylene.
Range
Outcome 3
Supervise the construction of open drains.
Evidence requirements
3.1
Supervision ensures that stream or intermittent surface flow is diverted during
open drain construction.
3.2
Supervision ensures that open drains are constructed in accordance with
contract specifications and technical instructions.
Planned review date
31 December 2015
Status information and last date for assessment for superseded versions
Process
Version Date
Last Date for Assessment
Registration
1
18 March 2011
N/A
Accreditation and Moderation Action Plan (AMAP) reference
0101
This AMAP can be accessed at http://www.nzqa.govt.nz/framework/search/index.do.
Please note
Providers must be granted consent to assess against standards (accredited) by NZQA, or
an inter-institutional body with delegated authority for quality assurance, before they can
report credits from assessment against unit standards or deliver courses of study leading
to that assessment.
Infrastructure ITO
SSB Code 101813
 New Zealand Qualifications Authority 2016
NZQA registered unit standard
26797 version 1
Page 4 of 4
Industry Training Organisations must be granted consent to assess against standards by
NZQA before they can register credits from assessment against unit standards.
Providers and Industry Training Organisations, which have been granted consent and
which are assessing against unit standards must engage with the moderation system that
applies to those standards.
Consent requirements and an outline of the moderation system that applies to this
standard are outlined in the Accreditation and Moderation Action Plan (AMAP). The
AMAP also includes useful information about special requirements for organisations
wishing to develop education and training programmes, such as minimum qualifications for
tutors and assessors, and special resource requirements.
Comments on this unit standard
Please contact Infrastructure ITO askus@infratrain.co.nz if you wish to suggest changes to
the content of this unit standard.
Infrastructure ITO
SSB Code 101813
 New Zealand Qualifications Authority 2016