22202 version 1
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Select, calculate and prepare timber quantity for landscape features
Level
3
Credits
5
Purpose
This unit standard is for people working, or intending to work, in landscaping.
People credited with this unit standard are able to: explain the application of
timber grading in landscape work; explain the application of timber
preservation in landscape work; identify insect and fungal attack in timber;
select timber for landscape work; and calculate quantities and prepare an
order of materials for a timber feature.
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 1009.
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
The New Zealand Standards applicable to this unit standard are: NZS 3631:1988
New Zealand timber grading rules, NZS 3640:2003 Chemical preservation of round
and sawn timber, available from http://www.standards.co.nz.
2
Legislation relevant to this unit standard includes but is not limited to the Native
Plants Protection Act 1934.
 New Zealand Qualifications Authority 2016
22202 version 1
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Elements and performance criteria
Element 1
Explain the application of timber grading in landscape work.
Performance criteria
1.1
Grades of indigenous and exotic timber are defined in accordance with NZS
3631:1988 and described in terms of the permitted characteristics of each
grade.
1.2
Each grade of timber in landscape work is defined in terms of its use and
limitations.
Element 2
Explain the application of timber preservation in landscape work.
Performance criteria
2.1
Methods of timber preservation are described in terms of the characteristics of
the materials used.
Range
methods – pressure, brush, spray.
2.2
The effectiveness of timber treatment is described in terms of the influences of
timber size and species.
2.3
Three native and three exotic timbers which may be used in landscape work
without preservation treatment are identified, their use limitations are defined,
and reasons for their durability are listed.
2.4
Preservation classifications defined in NZS 3640:2003A1 are described in terms
of the landscaping uses of timber treated to the requirements of each
classification.
2.5
The retention of specified durability of treated timber is described in terms of
requirements in use.
Range
requirements for – cutting, covering, appropriate use.
 New Zealand Qualifications Authority 2016
22202 version 1
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Element 3
Identify insect and fungal attack in timber.
Performance criteria
3.1
Types of insect attack in samples of timber are identified with an explanation of
an eradication method for each type.
Range
3.2
two of the following insects – common house borer, two-toothed
longhorn borer, pin-hole borer, termites.
Types of fungal attack in samples of timber are identified with an explanation of
an eradication method for each type.
Range
two of the following fungi – dry rot, wet rot, sap stain, moulds.
Element 4
Select timber for landscape work.
Performance criteria
4.1
End use of the timber is identified to determine grade, durability or preservation,
and moisture content which are required for timber selected.
Range
end uses – in-ground, in water, exposed to the weather, covered,
construction, finishing.
4.2
Timber meeting the defined requirements is selected for length, to minimise
waste, and freedom from insect or fungal infestation detrimental to the work.
4.3
Choice of timber species is explained in terms of environmental issues and the
selection available in New Zealand.
Range
4.4
protection of native bush, sources of imported timbers, selection of
alternatives.
Recycled timber selected for landscape work meets workplace procedures
required for its designated use.
Range
local authority requirements, strength, durability, appearance.
Element 5
Calculate quantities and prepare an order of materials for a timber feature.
Performance criteria
5.1
Quantities of timber materials are calculated to meet the requirements of
drawings and specifications.
 New Zealand Qualifications Authority 2016
22202 version 1
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5.2
Timber selected is priced from two merchants including delivery.
5.3
Documentation is prepared for quantities of materials to meet specifications and
delivery requirements.
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