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Construct stone features in landscape work
Level
4
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: identify the material
requirements for stone landscape features; use hand and portable power
tools and safe techniques in stone construction; build a dry stone wall;
construct mortared stone features; and construct a stone feature with
reinforced concrete backing.
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.
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, and the Resource Management Act 1991.
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3
The New Zealand Standards applicable to this unit standard are: NZS 3109:1997
Concrete construction, NZS 4210:2001 Masonry construction: Materials and
workmanship, AS/NZS 4671:2001 Steel reinforcing materials, available from
http://www.standards.co.nz.
4
Any work carried out in playground areas must comply with NZS 5828:2004
Playground equipment and surfacing, available from http://www.standards.co.nz.
Elements and performance criteria
Element 1
Identify the material requirements for stone landscape features.
Performance criteria
1.1
Stone for the construction of dry stone wall is calculated from drawings or
specifications, and is ordered for site delivery in accordance with workplace
procedures.
Range
1.2
type of stone, size range and preferred shape, colour range where
applicable, tonnage or square metres of face area, freight or
delivery method.
Materials for mortared construction of stone features are calculated from
drawings and specification, and are ordered for site delivery in accordance with
workplace procedures.
Range
materials for three of – walls, retaining walls, seats, steps,
columns, piers and posts, storage features;
detailing – sand by grade and volume in cubic metres, cement by
bag or tonne, admixtures by volume and type.
Element 2
Use hand and portable power tools and safe techniques in stone construction.
Performance criteria
2.1
Hand and power tools are selected and used in accordance with workplace
procedures, to achieve a specified outcome without damage to materials, injury
to the operator, or danger to others.
Range
tools may include but are not limited to – lines, automatic level,
spirit level, measuring rule, measuring tape, square, straight edge;
hammer, shovel, wheelbarrow, hand saw, sledge hammer,
reinforcing steel bender, bolt cutters, club hammer, bolster, skutch
hammer, cold chisel;
hand concrete rammer, scrubbing brush, hose, pointing trowel,
mortar board, laying trowel, pointing tool; concrete mixer, power
saw, electric drill, electrical lead, residual current device, power
saw and stone cutting blade or water lubricated stone cutting saw.
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2.2
Tools are not damaged in achieving the outcome, and are maintained in
accordance with workplace procedures.
Range
2.3
Safety equipment is used in accordance with workplace procedures to reduce
the risk of injury when working with stone.
Range
2.4
sharp, clean, adjusted, lubricated, undamaged.
gloves, eye protection, ear protection, footwear, dust mask.
Lifting techniques which minimise the risk of back injury are used in accordance
with workplace procedures when working with stone.
Element 3
Build a dry stone wall.
Performance criteria
3.1
Set out for the feature ensures that the wall will be to the dimensions shown and
the location identified on the site drawings or specifications.
3.2
Foundations are appropriate to breadth and purpose of foundation.
3.3
Stone chosen for size and shape is laid to line, bedded in the excavation, and
stabilised with compacted hardfill to establish a solid base for the wall.
3.4
Remaining courses of stone achieve structural stability, dimension in
accordance with drawings, specifications, and dry wall ratios, weather
resistance, and balanced visual appearance by the inclusion of accepted
elements in the laying process.
Range
elements – ties, bonds, end and corner finishes, batter, pattern,
balance of size, fill to double sided features.
3.5
Capping stones are selected and placed to provide a weather proof finish and
structural tie across the top of the wall, to the line and height shown in site
drawings and specifications.
3.6
Surplus material is removed, and site is left in a condition which allows further
work to be done unimpeded in accordance with workplace procedures.
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Element 4
Construct mortared stone features.
Range
three of – walls, retaining walls, seats, steps, columns, piers and posts, storage
features.
Performance criteria
4.1
Features are constructed to dimension and in location shown on site drawings
or specifications, and in accordance with workplace procedures.
4.2
Construction of foundation is to dimension shown on drawings and meets the
requirements of the site specification and NZS 3109:1997.
4.3
Stone to be laid is selected for shape, balance of size, and formation of joints to
size defined in the site specification.
4.4
Techniques used in cutting stone reflect the working characteristics of the stone
being used in accordance with workplace procedures.
Range
grain, hardness, breaking pattern.
4.5
Mortar for laying stone is mixed and used in accordance with the requirements
of NZS 4210:2001.
4.6
Joints are finished to specification and shaped to run water out of the structure.
4.7
Drainage requirements detailed in the site drawings or specifications are
incorporated in the feature as shown.
4.8
Feature is cleaned down when mortar is dry, in accordance with workplace
procedures, to leave surface free of loose material and accumulated mortar.
Element 5
Construct a stone feature with reinforced concrete backing.
Performance criteria
5.1
Foundation is established to line, height, and location shown on drawings or
specifications to include starter reinforcing defined for feature construction.
5.2
Formwork is constructed to contain concrete backing to line and height shown
on drawings or specifications in accordance with workplace procedures.
5.3
Drainage provisions are incorporated in the feature as detailed in drawings and
specification.
5.4
Reinforcing for the feature is cut, bent, placed, and fixed as shown in drawings,
and in accordance with the requirements of AS/NZS 4671:2001.
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5.5
Stone courses are laid to maximum height specified, and mortar is allowed to
set before placement of concrete backing is undertaken.
5.6
Inner surface of stone is wetted, and cement grout is mixed in accordance with
the site specification and applied to give total coverage before concrete is
poured.
5.7
Concrete mixed to site specification and in accordance with the requirements of
NZS 3109:1997 is placed in cavity between stone and formwork using methods
which minimise the possibility of distortion of the stone face.
Range
vertical layers to depth allowed in specification; concrete
compaction which does not disturb stone facing; protection to keep
concrete off the stone facing surface.
5.8
All joints in the backing concrete are keyed and coated with grout before
placement of the next layer.
5.9
Joints are finished as detailed in the site specification and the surface is cleaned
down to remove loose material and accumulated mortar on completion.
5.10
Fixings for other construction elements are provided in the feature to detail
shown on drawings or specifications.
Range
5.11
Associated work is completed to requirement of drawings and specification and
without damage to the feature.
Range
5.12
may include but is not limited to – drainage, formwork removal,
waterproof membranes, backfilling.
Devices which define areas of danger are used in accordance with workplace
procedures when work is accessible to the public.
Range
5.13
fixings may include but are not limited to – bolts, nailing blocks,
brackets, ducting.
may include but is not limited to – barriers, lights, warning signs.
Surplus material is removed, and site is left in a condition which allows further
work to be done 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.
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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