NZQA registered unit standard
28702 version 1
Page 1 of 3
Title
Complete records and take samples for chipseal construction
Level
4
Credits
6
Purpose
People credited with this unit standard are able to complete
and store records and take samples for chipseal 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:
NZS 4407:1991 Complete set: Methods of sampling and testing road aggregates,
Standards New Zealand, at http://www.standards.co.nz;
Quality Assurance for Bituminous Binders: A Code of Practice developed by Roading
New Zealand, RNZ 9803:2013, Roading New Zealand, available at
http://www.roadingnz.org.nz/sites/roadingnz.org.nz/files/RNZ9803_0513_Final.pdf;
Quality Assurance of Aggregates for Roads RNZ 9805:2009, Roading New Zealand,
available at
http://www.roadingnz.org.nz/sites/dev.roadingnz.org.nz/files/QA%20of%20Aggregate
s%20for%20Roads.pdf;
New Zealand Transport Agency specifications at http://www.nzta.govt.nz/resources/:
NZTA T/3: Standard test procedure for measurement of texture by the sand circle
method measurement;
NZTA T/4: Standard procedure for description of test locations on state highways;
Contract quality plan.
2
Definitions
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.
PSV means polished stone value.
Outcomes and evidence requirements
Outcome 1
Complete and store records for chipseal construction.
Infrastructure ITO
SSB Code 101813
 New Zealand Qualifications Authority 2016
NZQA registered unit standard
28702 version 1
Page 2 of 3
Evidence requirements
1.1
Sealing records are completed and stored in accordance with contract quality
plan and company procedures.
Range
1.2
Plant and labour records are completed and stored in accordance with company
procedures.
Range
1.3
spray sheets, tank dips, binder type, binder used, blends, loading
dockets, chip type and source, chip used, dimensions, target
application rates, actual application rates, air temperature, ground
temperature, weather, traffic, comments on issues, tasks
completed.
examples of records – foreman’s diary, roller hours.
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, and non-conformance.
Outcome 2
Take samples for chipseal construction.
Evidence requirements
2.1
Before sealing commences, chip samples are taken from a stockpile in
accordance with methods in NZS 4407:1991 and RNZ 9805:2009, in order to
confirm compliance with seal design.
Range
sampling must– have correct sample size, have correct number of
samples, be representative of the pile, be labelled, include source
name.
2.2
Chip samples are taken for PSV test in accordance with the contract quality
plan.
2.3
A sample is taken of the first binder spray run and assessed for meeting
contract requirements in accordance with the contract quality plan.
Range
2.4
requirements for – consistent spray, appropriate film thickness,
binder sticking to chip.
Binder load samples are taken from a bitumen distributor and recorded in
accordance with the contract quality plan and company procedures.
Range
Infrastructure ITO
SSB Code 101813
load samples for a contract with multiple loads.
 New Zealand Qualifications Authority 2016
NZQA registered unit standard
2.5
28702 version 1
Page 3 of 3
All samples are labelled in accordance with the contract quality plan.
samples of – stockpile, chip for PSV, first binder spray run, binder
loads;
labelling includes where relevant – date, time, sample size, binder
type, binder temperature, container type, tanker number, sprayer
number, chip grade, chip source, sampler’s name, site name,
location.
Range
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.
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