NZQA registered unit standard
28220 version 1
Page 1 of 3
Title
Manufacture timber stairs for use in residential and commercial
buildings
Level
4
Purpose
Credits
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, for
residential and commercial buildings: demonstrate knowledge
of the requirements for design and manufacture of timber
stairs; manufacture timber stairs; and describe the
requirements for installing stairs on-site.
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.
3
Stairs may include but are not limited to – straight flight, quarter turn, quarter turn
with winders, dog-leg, open well; closed string, cut string, and under carriages.
Evidence is required of a straight flight of stairs and one other type.
Outcomes and evidence requirements
Outcome 1
Demonstrate knowledge of the requirements for design and manufacture of timber stairs
used in residential and commercial buildings.
Evidence requirements
1.1
The type of stair is identified and described from the working drawings.
1.2
Housed string, cut string, and undercarriages are identified and their uses
outlined.
Building and Construction Industry Training
Organisation
SSB Code 101562
 New Zealand Qualifications Authority 2016
NZQA registered unit standard
28220 version 1
Page 2 of 3
1.3
Common site measurement techniques are described in terms of their
procedures.
1.4
Calculations for stair set-out are completed in accordance with the requirements
of the job specifications and workplace practice.
1.5
Quantities of materials are determined in accordance with the job specifications
and workplace practice.
Outcome 2
Manufacture timber stairs for residential and commercial buildings.
Evidence requirements
2.1
The type of stair is identified from the working drawings.
2.2
On-site measurements are confirmed in accordance with workplace practice.
2.3
A cutting list is completed for material requirements in accordance with
workplace practice.
2.4
The stairs are set out to conform to the working drawings and the specifications.
2.5
Timber is machined to conform to the housings or cut strings, and joints are
worked in accordance with workplace practice.
2.6
Stair is assembled and finished in accordance with workplace practice.
2.7
Handrails and balustrades are machined and assembled, where required, to
conform to the working drawings.
Outcome 3
Describe the requirements for installing stairs on-site in residential and commercial
buildings.
Evidence requirements
3.1
The requirements for stairs are described in accordance with working drawing
specifications.
3.2
The procedures for trimming and installing stairs are described in accordance
with the working drawings and workplace practice.
3.3
The procedures for trimming and finishing stairs are described in accordance
with workplace practice.
Building and Construction Industry Training
Organisation
SSB Code 101562
 New Zealand Qualifications Authority 2016
NZQA registered unit standard
Replacement information
Planned review date
28220 version 1
Page 3 of 3
This unit standard replaced unit standard 2531, unit
standard 2532, and unit standard 25160.
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