NZQA registered unit standard
28221 version 1
Page 1 of 3
Title
Manufacture timber geometric stairs for residential and commercial
buildings
Level
4
Credits
Purpose
25
This unit standard is for experienced people working in a
joinery workshop producing timber stairs.
People credited with this unit standard are able to: demonstrate
knowledge of manufacturing geometric stairs and balustrades;
and manufacture geometric timber stairs, for residential and
commercial buildings.
Classification
Joinery > Joinery Operational Skills
Available grade
Achieved
Explanatory notes
1
All workplace practices must comply with current legislation, codes of practice, and
documented site safety procedures for personal, product, and worksite safety.
2
Legislation and regulations relevant to this unit standard include but are not limited to
– Health and Safety in Employment Act 1992, Health and Safety in Employment
Regulations 1995.
Outcomes and evidence requirements
Outcome 1
Demonstrate knowledge of manufacturing geometric stairs and balustrades for residential
and commercial buildings.
Evidence requirements
1.1
The procedure for setting out geometrical stairs and balustrades is described in
terms of workplace practices.
Range
procedure includes but is not limited to – analyse working
drawings, establish site conditions, make stair calculations, set
quantities of materials, produce set-out.
1.2
The procedure for selecting and machining timber for geometric stairs is
described in terms of workplace practices.
1.3
The process of assembling stairs is described in terms of workplace practices.
Building and Construction Industry Training
Organisation
SSB Code 101562
 New Zealand Qualifications Authority 2016
NZQA registered unit standard
Range
28221 version 1
Page 2 of 3
process includes but is not limited to – glue laminations, fabricate
stair components.
1.4
The process of assembling, fitting, and fixing handrails and balustrades is
described in terms of workplace practices.
1.5
Any protective measures required for stair components are identified and
described in terms of workplace practices.
Outcome 2
Manufacture geometric timber stairs for residential and commercial buildings.
Evidence requirements
2.1
The type of stair is identified from the working drawings.
2.2
Site conditions are measured and documented in accordance with workplace
practice.
2.3
The stair calculations are completed in accordance with workplace practice.
2.4
The quantities of materials are calculated and an order placed in accordance
with workplace practice.
2.5
The stair is set out on full-sized formers to conform to the working drawings.
2.6
Stair timber is machined to match full-sized set-out in accordance with
workplace practice.
2.7
Joints are worked in accordance with workplace practice.
2.8
Laminations are glued for curved components to conform to the full-sized
set-out in accordance with workplace practice.
2.9
Stair components are factory fabricated to the requirements of the working
drawings.
2.10
The stair is assembled to conform to the working drawings.
2.11
Handrails and balustrades are assembled, fitted, and fixed in accordance with
the working drawings.
2.12
Stairs are finished and protected in accordance with the specifications.
Replacement information
This unit standard replaced unit standard 2533 and unit
standard 25605.
Building and Construction Industry Training
Organisation
SSB Code 101562
 New Zealand Qualifications Authority 2016
NZQA registered unit standard
Planned review date
28221 version 1
Page 3 of 3
31 December 2018
Status information and last date for assessment for superseded versions
Process
Version Date
Last Date for Assessment
Registration
1
24 October 2014
N/A
Consent and Moderation Requirements (CMR) reference
0073
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 (CMR). 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.
Comments on this unit standard
Please contact the Building and Construction Industry Training Organisation
info@bcito.org.nz if you wish to suggest changes to the content of this unit standard.
Building and Construction Industry Training
Organisation
SSB Code 101562
 New Zealand Qualifications Authority 2016