NZQA Expiring unit standard
25234 version 2
Page 1 of 3
Title
Install thrust, anti-scour, and anchor blocks for water reticulation
Level
3
Purpose
Credits
4
This unit standard is for people who work in water reticulation.
People credited with this unit standard are able to: excavate
and prepare base; install thrust, anti-scour, and anchor blocks;
carry out backfilling and clear the site; and demonstrate
knowledge of regulatory requirements, selection of methods
and materials, and the concept of thrust, as applied to the
installation of thrust, anti-scour, and anchor blocks.
Classification
Water Industry > Water Reticulation
Available grade
Achieved
Explanatory notes
1
Legislation, codes, and guides applicable to this unit standard are:
Health and Safety in Employment Act 1992;
Approved Code of Practice for Excavation and Shafts for Foundations (Wellington:
Department of Labour, 2000), and
Guide for Safety with Underground Services (Wellington: Department of Labour,
2002); available at http://www.osh.govt.nz.
Legislation applicable to this unit standard may include but is not limited to:
Resource Management Act 1991;
Building Act 2004.
2
This unit standard applies to thrust, anti-scour, and anchor blocks made from precast concrete, blocks in-situ, and suitably ground-treated timbers.
3
Definitions
Organisational procedures refer to instructions to staff, and procedures which are
documented in memo or manual format and are available in the workplace. These
requirements include but are not limited to – site specific requirements,
manufacturers’ specifications, product quality specifications, and legislative or
regulatory requirements.
Specification – the drawings and specification setting out the position and standards
for the proposed work.
4
Credit for this unit standard does not qualify the candidate to work in a drainlaying
situation that comes under the drainlayers licence requirements issued under the
Plumbers, Gasfitters, and Drainlayers Act 2006 and any subsequent amendments.
Primary Industry Training Organisation
SSB Code 101558
 New Zealand Qualifications Authority 2016
NZQA Expiring unit standard
25234 version 2
Page 2 of 3
Outcomes and evidence requirements
Outcome 1
Excavate and prepare base.
Evidence requirements
1.1
Excavation is carried out in accordance with the specification and organisational
procedures.
1.2
Stable sub-base is identified in accordance with visual assessment and the
specification.
1.3
Base material is selected, placed, and levelled in accordance with site
conditions and the specification.
Outcome 2
Install thrust, anti-scour, and anchor blocks.
Evidence requirements
2.1
Blocks are positioned in accordance with the specification.
2.2
Blocks are installed in accordance with the specification.
2.3
Blocks and associated fittings are protected in accordance with the
specification.
Outcome 3
Carry out backfilling and clear the site.
Evidence requirements
3.1
Site is backfilled, and compacted as necessary, in accordance with the
specification.
3.2
Site is cleared of construction debris and working equipment in accordance with
organisational procedures.
Outcome 4
Demonstrate knowledge of regulatory requirements, selection of methods and materials,
and the concept of thrust, as applied to the installation of thrust, anti-scour, and anchor
blocks.
Evidence requirements
4.1
Relevant sections of legislation, standards, and codes are described in terms of
their application to the installation of thrust, anti-scour, and anchor blocks.
Primary Industry Training Organisation
SSB Code 101558
 New Zealand Qualifications Authority 2016
NZQA Expiring unit standard
25234 version 2
Page 3 of 3
4.2
Selection of methods and materials is described in accordance with the
specification.
4.3
The concept of thrust is described in terms of its application to the installation of
thrust, anti-scour, and anchor blocks.
Replacement information
This unit standard has been replaced by unit standard
27330.
This unit standard is expiring. Assessment against the standard must take place by
the last date for assessment set out below.
Status information and last date for assessment for superseded versions
Process
Version Date
Last Date for Assessment
Registration
1
22 August 2008
31 December 2016
Review
2
21 July 2011
31 December 2016
Consent and Moderation Requirements (CMR) reference
0179
This CMR 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,
before they can report credits from assessment against unit standards or deliver courses
of study leading to that assessment.
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.
Requirements for consent to assess and an outline of the moderation system that applies
to this standard are outlined in the Consent and Moderation Requirements (CMR). The
CMR 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.
Primary Industry Training Organisation
SSB Code 101558
 New Zealand Qualifications Authority 2016