NZQA registered unit standard
27074 version 2
Page 1 of 4
Title
Demonstrate knowledge of timber grading
Level
2
Credits
5
Purpose
People credited with this unit standard are able to: demonstrate
knowledge of: timber grading; timber defects and their
relationship to timber grades; grades and grading at own
worksite; and size tolerances for timber grades.
Classification
Wood Manufacturing - Generic Skills > Wood Manufacturing
Foundation Skills
Available grade
Achieved
Explanatory notes
1
All evidence requirements must be demonstrated and assessed in accordance with
the reference text: Demonstrate Knowledge of Timber Grading, published by
Competenz and available from Competenz at http://www.competenz.org.nz, or
Competenz, PO Box 9005, Newmarket, Auckland 1149.
2
Definition
Worksite policies and procedures refer to documented policies and to documented or
other directions provided to staff. These include, but are not limited to, ways of
managing health and safety, environmental considerations, quality, and production,
and must conform to legislation. Examples include standard operating procedures,
company health and safety plans, on-site briefings, and supervisor’s instructions.
Outcomes and evidence requirements
Outcome 1
Demonstrate knowledge of timber grading.
Evidence requirements
1.1
Categories of timber are explained in terms of their end use and most important
property.
Range
categories of timber - structural, appearance, cuttings, box.
1.2
The importance of accurate grading is explained in accordance with worksite
policies and procedures.
1.3
Mechanical stress grading in the timber industry is described.
Competenz
SSB Code 101571
 New Zealand Qualifications Authority 2016
NZQA registered unit standard
27074 version 2
Page 2 of 4
Outcome 2
Demonstrate knowledge of timber defects and their relationship to timber grades.
Evidence requirements
2.1
Defects are identified from supplied samples and their causes explained.
Range
2.2
The potential impacts of defects on timber are identified in accordance with the
reference text.
Range
2.3
defects – knots, pith, wane, sap stain, cup, crook, bow, twist, skip.
Processing defects are identified from supplied samples and the cause of each
defect is explained.
Range
2.4
defects – knots, pith, wane, sap stain, cup, crook, bow, twist, skip.
evidence of two types of processing defects is required.
Biological defects are identified from supplied samples and the cause of each
defect is explained.
Range
any two of – mould, insects, decay.
Outcome 3
Demonstrate knowledge of grades and grading at own worksite.
Evidence requirements
3.1
Timber grades present at the worksite are identified and explained in terms of
suitable end use.
Range
3.2
Defects allowable in the worksite are explained for grades of timber.
Range
3.3
evidence of three timber grades.
evidence of four allowable defects for two grades of timber.
Grade marks used at the worksite are identified and matched to grades in
accordance with worksite policies and procedures.
Range
Competenz
SSB Code 101571
evidence of three grade marks.
 New Zealand Qualifications Authority 2016
NZQA registered unit standard
27074 version 2
Page 3 of 4
Outcome 4
Demonstrate knowledge of size tolerances for timber grades.
Evidence requirements
4.1
Tolerances for two timber sizes are identified in accordance with worksite
policies and procedures.
4.2
The reason for applying size tolerances to timber is explained.
4.3
Sizing variations are identified in accordance with worksite policies and
procedures.
Range
evidence is required of two sizing variations.
Replacement information
This unit standard replaced unit standard 9774.
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
15 April 2011
31 December 2014
Revision
2
18 April 2013
N/A
Consent and Moderation Requirements (CMR) reference
0173
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 (CMRs). 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.
Competenz
SSB Code 101571
 New Zealand Qualifications Authority 2016
NZQA registered unit standard
27074 version 2
Page 4 of 4
Comments on this unit standard
Please contact the Competenz info@competenz.org.nz if you wish to suggest changes to
the content of this unit standard.
Competenz
SSB Code 101571
 New Zealand Qualifications Authority 2016