25705 version 1
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Develop fabrication patterns for complex three-dimensional objects
Level
4
Credits
10
Purpose
This unit standard is for use in training of fabrication trades and covers
development of patterns for the fabrication of complex three dimensional
objects using the parallel line, radial line, and triangulation methods.
People credited with this unit standard are able to develop fabrication patterns
for complex three-dimensional objects.
Subfield
Mechanical Engineering
Domain
Engineering - Fabrication
Status
Registered
Status date
17 July 2009
Date version published
17 July 2009
Planned review date
31 December 2014
Entry information
Open.
Accreditation
Evaluation of documentation and visit by NZQA.
Standard setting body (SSB)
Competenz
Accreditation and Moderation Action Plan (AMAP) reference
0013
This AMAP can be accessed at http://www.nzqa.govt.nz/framework/search/index.do.
Special notes
1
Definitions
Industry practice – safe and sound practices generally accepted by competent trade
persons within the fabrication industry.
Complex three-dimensional objects – oblique ducts, bends; branches of unequal
diameter cylinders, oblique cones and pyramids; truncated oblique cones and
pyramids; and square to rectangular, square to round, and rectangular to round
transitions between inclined planes and more than one offset.
 New Zealand Qualifications Authority 2016
25705 version 1
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Range
a Materials may include – sheet, plate, structural sections, angles, channels, pipes,
tubes.
b Patterns should be developed on paper or cardboard.
c Evidence of at least six pattern developments across a range of thicknesses and
involving parallel line, radial line, and triangulation methods. At least two pattern
developments must involve transitions.
Elements and performance criteria
Element 1
Develop fabrication patterns for complex three-dimensional objects.
Performance criteria
1.1
Orthographic views of complex three-dimensional objects are drawn with
dimensions in accordance with industry practice.
1.2
Patterns are manually developed from orthographic views in accordance with
industry practice.
1.3
Pattern developments include fabrication and assembly allowances in
accordance with industry practice.
1.4
Pattern developments include construction and datum points.
1.5
Right, oblique, and transition patterns are generated from computer
development packages in accordance with industry practice.
1.6
Calculations are performed to check the accuracy of patterns.
Please note
Providers must be accredited by NZQA, 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 NZQA 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.
 New Zealand Qualifications Authority 2016
25705 version 1
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Comments on this unit standard
Please contact Competenz qualifications@competenz.org.nz if you wish to suggest
changes to the content of this unit standard.
 New Zealand Qualifications Authority 2016