NZQA registered unit standard
28710 version 1
Page 1 of 3
Title
Complete records and take samples for slurry surfacing construction
Level
4
Credits
6
Purpose
People credited with this unit standard are able to keep and
store records and take samples for slurry surfacing
construction.
Classification
Infrastructure Works > Bitumen Surfacing Construction
Available grade
Achieved
Explanatory notes
1
Competence in this unit standard requires knowledge of and compliance with the
current editions of the following references:
RNZ 9806, Specification for Slurry Surfacings RNZ 9806: June 2010, Roading New
Zealand, available at http://www.nzcontractors.co.nz;
ISSA A105 Recommended Performance Guideline for Emulsified Asphalt Slurry Seal
A105 (Revised February 2010) International Slurry Surfacing Association available at
http://www.slurry.org;
ISSA A143 Recommended Performance Guideline For Micro Surfacing A143
(Revised February 2010), International Slurry Surfacing Association available at
http://www.slurry.org;
Contract quality plan.
2
Definition
Company procedures refers to all documented policies, procedures, and
methodologies of the candidate’s employer at the time of training, including but not
limited to those relating to health, safety, environment, quality, and operations.
PSD means particle size distribution.
Slurry surfacing is the generic term for a mix of asphalt emulsion binder, crushed
aggregate, and stabilising filler. A development of slurry using a polymer modified
binder and selected aggregates is known as micro surfacing.
Outcomes and evidence requirements
Outcome 1
Complete and store records for slurry surfacing construction.
Evidence requirements
1.1
Construction records are completed and stored in accordance with contract
quality plan and company procedures.
Infrastructure ITO
SSB Code 101813
 New Zealand Qualifications Authority 2016
NZQA registered unit standard
Range
28710 version 1
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tack coat binder quantities, emulsion used, aggregate used, slurry
samples, slurry tonnage, dimensions, layer thickness, test strips.
1.2
Plant and labour records are completed and stored in accordance with company
procedures.
1.3
Site records are completed and stored in accordance with contract quality plan
and company procedures.
Range
site instructions, tasks completed;
may include – site conditions; site exceptions; client
communication; public communication; site timings such as start,
finish, downtime, stoppage, non-conformance, traffic management
details, roadmarking completed.
Outcome 2
Take samples for slurry surfacing construction.
Evidence requirements
2.1
Samples are taken from aggregate stockpiles and recorded in accordance with
contract quality plan.
Range
2.2
sand equivalent, moisture content, gradation, conformance testing,
mix test.
Samples are taken from emulsion tank and recorded in accordance with
contract quality plan.
Range
2.3
binder content, sieve test, PSD test, mix test.
Slurry samples are taken and recorded in accordance with contract quality plan.
Range
binder content, gradation.
Planned review date
31 December 2019
Status information and last date for assessment for superseded versions
Process
Version Date
Last Date for Assessment
Registration
1
19 February 2015
N/A
Consent and Moderation Requirements (CMR) reference
0101
This CMR can be accessed at http://www.nzqa.govt.nz/framework/search/index.do.
Infrastructure ITO
SSB Code 101813
 New Zealand Qualifications Authority 2016
NZQA registered unit standard
28710 version 1
Page 3 of 3
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 Infrastructure ITO qualifications@infrastructureito.org.nz if you wish to
suggest changes to the content of this unit standard.
Infrastructure ITO
SSB Code 101813
 New Zealand Qualifications Authority 2016