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Lay concrete as hard surface to specifications in landscape work
Level
3
Credits
10
Purpose
This unit standard is for people working, or intending to work, in landscaping.
People credited with this unit standard are able to: prepare work area for
laying of concrete surfaces; select base material to lay concrete; use hand
tools and light equipment in laying of base; lay base for hard surfaces; install
edgings to hard surfaces; mix concrete for landscape work; transport, place,
and compact wet concrete; and finish, protect, and cure concrete.
Subfield
Horticulture
Domain
Landscape
Status
Registered
Status date
25 September 2006
Date version published
25 September 2006
Planned review date
31 December 2011
Entry information
Open.
Replacement information
This unit standard replaced unit standard 996 and unit
standard 1004.
Accreditation
Evaluation of documentation and visit by NZQA, industry
and teaching professional in the same field from another
provider.
Standard setting body (SSB)
Primary Industry Training Organisation
Accreditation and Moderation Action Plan (AMAP) reference
0032
This AMAP can be accessed at http://www.nzqa.govt.nz/framework/search/index.do.
Special notes
1
Workplace procedures refer to verbal or written instructions to staff on procedures for
the worksite and equipment.
2
Legislation relevant to this unit standard includes but is not limited to the Health and
Safety in Employment Act 1992.
3
The New Zealand Standards applicable to this unit standard are: AS/NZS 4671:2001
Steel reinforcing materials, NZS 3109:1997 Concrete construction, and NZS
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3113:1979 Specification for chemical admixtures for concrete, available from
http://www.standards.co.nz.
Elements and performance criteria
Element 1
Prepare work area for laying of concrete surfaces.
Performance criteria
1.1
Excavation for the work is completed in accordance with workplace procedures
and in accordance with the requirements of the drawings and specifications.
1.2
Edgings for the work are established to height, line, and grade shown on
drawings and are in accordance with the specification and manufacturer's
requirements where applicable.
Element 2
Select base material to lay concrete.
Performance criteria
2.1
Base materials are explained in terms of their characteristics, using examples of
two locally available materials.
Range
2.2
characteristics may include but are not limited to – grading,
compaction, permeability, particle size and distribution, material
source.
Material requirements are calculated and ordered from drawings, specifications,
and a site check of an excavation.
Element 3
Use hand tools and light equipment in laying of base.
Range
at least 12 of – measuring tape, straight edge, spirit level, lines, builders level,
boning rods, sledge hammer, saw, hammer, rake, shovel, screed board, hand
rammer, power compactor, light machine with blade or bucket, vibrating roller.
Performance criteria
3.1
Tools and equipment are described in terms of their uses, capabilities, and
limitations.
3.2 Tools and equipment are selected and used in accordance with workplace procedures
to achieve specified outcome without damage or injury to the operator or others.
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3.3
Tools and equipment are maintained in accordance with workplace procedures.
Range
clean, lubricated, free from damage, adjusted to manufacturer's
recommendations.
Element 4
Lay base for hard surfaces.
Performance criteria
4.1
Height, line, and grade for finished hardfill are established with pegs located to
measurements and heights shown in drawings or specifications.
4.2
Any services to, or passing under, hard surface are located before base is laid,
and protected from damage during laying of hardfill.
Range
4.3
Base is laid to specification of hard surface material requirements and in
accordance with workplace procedures.
Range
4.4
drainage, drainage collection points, water, electricity, gas,
telephone, data cables.
layering, coarse to fine material, use of water as a compaction
agent, use of lime as a stabiliser, use of geo-textiles.
Base is compacted and surface finished to height, line, and grade for
establishment of edgings.
Element 5
Install edgings to hard surfaces.
Range
temporary or permanent.
Performance criteria
5.1
Edgings are set out to height, line, and grade as detailed in drawings or
specifications, or site requirements and purpose.
5.2
Formwork is constructed for cast concrete edging to provide specified profile
and maintenance of height and line during pouring.
5.3
Concrete is mixed to specification and placed, finished, and protected to provide
edging as detailed in drawings or specifications and in accordance with
workplace procedures.
5.4
Temporary edgings are constructed in accordance with workplace procedures
to allow removal without damage to edging or hard surface on completion.
5.5
Site is maintained and left in a condition which enables further work to be
undertaken unimpeded and in accordance with workplace procedures.
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Element 6
Mix concrete for landscape work.
Performance criteria
6.1
Materials are stored to ensure that their delivered quality is maintained until
mixing.
6.2
Methods used to measure materials for mixing ensure that specified mix
proportions are achieved.
Range
weight, volume.
6.3
Materials are mixed for the specified time and to required consistency in
accordance with workplace procedures.
6.4
Tidy work area is maintained in accordance with workplace procedures to
ensure that materials are not contaminated prior to mixing, and that equipment
is kept free of spilt concrete.
Element 7
Transport, place, and compact wet concrete.
Performance criteria
7.1
Transporting, placing, and compacting is completed in accordance with
workplace procedures, before initial set takes place.
7.2
Transporting, placing, and compacting is completed without segregation of mix
ingredients.
7.3
Transport methods used meet site requirements.
Range
7.4
Compaction methods used suit the type and scale of work, produce specified
concrete density, and prevent damage to equipment and formwork.
Range
7.5
requirements may include but are not limited to – volume of
concrete, access to site, access to placing point, labour available.
evidence for three of – hand rammer, hand screed, immersion
vibrator, vibrating screed.
Tools and equipment are washed before concrete sets on them in accordance
with workplace procedures.
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Element 8
Finish, protect, and cure concrete.
Performance criteria
8.1
Concrete is completed to the specified line, height, and surface finish.
Range
finishes – wooden float, steel float, brushed.
8.2
Concrete is protected from weather, traffic, and work processes until hardened
in accordance with workplace procedures.
8.3
Methods used in curing ensure that concrete is able to reach its optimum
strength and hardness.
Range
8.4
covering, ponding, spraying, retention of formwork.
Surplus material is removed from site on completion of work, and site is left in a
condition that allows further work to proceed unimpeded in accordance with
workplace procedures.
Please note
Providers must be accredited by the Qualifications Authority, 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.
Industry Training Organisations must be accredited by the Qualifications Authority before
they can register credits from assessment against unit standards.
Accredited providers and Industry Training Organisations assessing against unit standards
must engage with the moderation system that applies to those standards.
Accreditation 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 the Primary Industry Training Organisation www.primaryito.ac.nz if you
wish to suggest changes to the content of this unit standard.
 New Zealand Qualifications Authority 2016