NZQA registered unit standard
6513 version 4
Page 1 of 5
Title
Restore, preserve, and maintain natural stone features, monuments,
and buildings
Level
5
Credits
20
Purpose
People credited with this unit standard are able to: demonstrate
knowledge of factors relating to degradation of natural stone;
complete project preparations to restore, preserve, and
maintain natural stone features, monuments, and buildings; set
up work area; restore damaged area; preserve and maintain
natural stone; and complete work operations.
Classification
Masonry > Stonemasonry
Available grade
Achieved
Explanatory notes
1
New Zealand Standards, legislation, and guides relevant to this unit standard include:
Health and Safety in Employment Act 1992 (HSE Act);
Resource Management Act 1991;
Building Act 2004;
NZS 4210:2001, Masonry construction: Materials and workmanship;
A Guide to Respiratory Protection (Department of Labour, 1999), available at
http://www.osh.govt.nz/order/catalogue/pdf/RespiratoryProtection.pdf.
2
Glossary of Terms
Company requirements refer to instructions to staff on policy and procedures that are
documented in memo or manual form and are relevant to the workplace.
Specifications refer to documented specifications and may include any or all of the
following: manufacturer's specifications and/or recommendations; material
specifications; job specifications; and specialist specifications, for example: architect;
designer; engineer; client.
Site safety plan refers to the documented safety plan for the site which is required by
law to ensure compliance with the requirements of the HSE Act 1992.
3
Reference material relevant to this unit standard include:
Safety data sheets relevant to products or materials being used for this unit standard,
available from manufacturers or suppliers, containing product ingredient content, safe
application and use information.
4
Natural stone products include granite, marble, basalt, and limestone.
Building and Construction Industry Training
Organisation
SSB Code 101562
 New Zealand Qualifications Authority 2016
NZQA registered unit standard
6513 version 4
Page 2 of 5
Outcomes and evidence requirements
Outcome 1
Demonstrate knowledge of factors relating to degradation of natural stone.
Evidence requirements
1.1
Physical causes of degradation are described in terms of thermal expansion,
freezing, incorrect manufacturing, incorrect installation, incorrect cleaning,
quality of anchorage system, incorrect adhesives, and incorrect anchorage
system.
1.2
Chemical causes of degradation are described in terms of carbon dioxide and
sulphur dioxide.
1.3
Characteristics of type of natural stone are identified in terms of carbonaceous,
siliceous, and sandstone.
Outcome 2
Complete project preparations to restore, preserve, and maintain natural stone features,
monuments, and buildings.
Evidence requirements
2.1
Client's requirements are confirmed in terms of restoration work to be
undertaken.
2.2
Types of stone for the work are identified in accordance with specifications.
Range
consider all types – granite, marble, concrete, basalt, sandstone.
2.3
Restoration requirements are identified in terms of type of deterioration and
extent.
2.4
Specifications are drawn up in terms of areas to be restored.
2.5
Schedule of work is developed to meet specifications.
2.6
Access to site is arranged to meet proposed schedule of work.
2.7
Site safety precautions are complied with as set down in the site safety plan.
Building and Construction Industry Training
Organisation
SSB Code 101562
 New Zealand Qualifications Authority 2016
NZQA registered unit standard
6513 version 4
Page 3 of 5
Outcome 3
Set up work area.
Evidence requirements
3.1
Area where restoration is to be conducted is in accordance with site plan and
specifications.
3.2
Actions taken in the event that the site is not suitable are in accordance with
company requirements.
3.3
Plant and materials are located to facilitate work flow.
3.4
Work of other trades is protected prior to commencement of work in accordance
with company requirements.
3.5
Lifting and handling equipment is set up in accordance with specifications.
Outcome 4
Restore damaged area.
Evidence requirements
4.1
Damaged area is cut out without further damage to surrounding stonework.
4.2
Area to be repaired is stabilised to prevent damage to project and injury to
personnel.
Range
4.3
Stone is restored with profile and design in accordance with specifications.
Range
4.4
injection of resin, riveting of slabs, chemical nogs, expansion nogs,
injection dowels, sealed joins, replacement of anchors.
natural stone, plastic stone.
Completed restoration is in accordance with specifications.
Outcome 5
Preserve and maintain natural stone.
Evidence requirements
5.1
Stonework is cleaned using method consistent with type and condition of stone.
Range
low pressure water spray, controlled sand blasting, dry or wet
chemicals.
Building and Construction Industry Training
Organisation
SSB Code 101562
 New Zealand Qualifications Authority 2016
NZQA registered unit standard
5.2
Agent applied to restored area to preserve and protect the stonework is
consistent with type of stone.
consider all types – granite, marble, concrete, basalt, sandstone.
Range
5.3
6513 version 4
Page 4 of 5
Preventative maintenance programme is established in accordance with
contract.
Outcome 6
Complete work operations.
Evidence requirements
6.1
Operations are completed without damage to project, plant, or materials.
6.2
Activities comply with the requirements of the site safety plan.
6.3
Plant is used, maintained, repaired, cleaned, and stored in accordance with
specifications and company requirements.
6.4
Documentation is completed in accordance with company requirements.
6.5
Worksite is left as specified in terms of contract with client.
6.6
Surplus materials are dealt with in accordance with legal and company
requirements.
Range
hazardous, non-hazardous.
Planned review date
31 December 2013
Status information and last date for assessment for superseded versions
Process
Version Date
Last Date for Assessment
Registration
1
30 January 1997
31 December 2011
Revision
2
8 April 1999
31 December 2011
Review
3
19 September 2008
31 December 2011
Revision
4
21 July 2011
N/A
Consent and Moderation Requirements (CMR) reference
0048
This CMR can be accessed at http://www.nzqa.govt.nz/framework/search/index.do.
Building and Construction Industry Training
Organisation
SSB Code 101562
 New Zealand Qualifications Authority 2016
NZQA registered unit standard
6513 version 4
Page 5 of 5
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.
Comments on this unit standard
Please contact the Building and Construction Industry Training Organisation
national.office@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