8799 version 6
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Calculate areas, contours, and volumes for survey purposes
Level
3
Credits
8
Purpose
This unit standard is for people working, or who intend to work, in the
surveying profession as a survey technician.
People credited with this unit standard are able to: calculate areas for survey
purposes; calculate volumes for survey purposes; and calculate contours for
survey purposes.
Subfield
Surveying
Domain
Survey Practice
Status
Registered
Status date
25 February 2008
Date version published
25 February 2008
Planned review date
31 December 2012
Entry information
Recommended: Unit 5251, Choose and apply
trigonometric methods to solve problems involving
lengths and angles, or demonstrate equivalent
knowledge and skills.
Accreditation
Evaluation of documentation and visit by NZQA and
industry.
Standard setting body (SSB)
Infrastructure ITO
Accreditation and Moderation Action Plan (AMAP) reference
0101
This AMAP can be accessed at http://www.nzqa.govt.nz/framework/search/index.do.
Special notes
1
Evidence is required of calculating survey data using mathematical principles and
showing working. Computer software may not be used in achievement of credit for
this unit standard.
2
A reference for this unit standard is Price, WF, and Uren, J, Surveying for Engineers
(UK: Palgrave Macmillan, 2005), available at http://www.fishpond.co.nz.
 New Zealand Qualifications Authority 2016
8799 version 6
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Elements and performance criteria
Element 1
Calculate areas for survey purposes.
Performance criteria
1.1
Areas incorporating circular boundaries are calculated using geometrical
principles.
Range
area – a traffic roundabout, one other.
1.2
The area of a polygon is calculated using the double longitude method.
1.3
Areas of arbitrary shape are determined using a combination of calculations and
a planimeter.
Range
calculations – multiple polygons, trapezoids;
one planimeter of – linear, polar, analogue, digital.
Element 2
Calculate volumes for survey purposes.
Range
calculations for - an earthwork cut and fill, a stockpile, a pond.
Performance criteria
2.1
Volumes are calculated using a variety of methods appropriate to the item.
Range
evidence is required of the following methods – end areas, prisms,
cross sections, estimating, geometrical shapes.
Element 3
Calculate contours for survey purposes.
Performance criteria
3.1
Land contours are calculated from reduced levels involving no less than one
hundred spot levels.
3.2
Contours are calculated for a stockpile of at least fifty cubic metres.
 New Zealand Qualifications Authority 2016
8799 version 6
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Please note
Providers must be accredited by NZQA, or an inter-institutional body with delegated
authority for quality assurance, before they can report credits from assessment against
unit standards or deliver courses of study leading to that assessment.
Industry Training Organisations must be accredited by NZQA before they can register
credits from assessment against unit standards.
Accredited providers and Industry Training Organisations assessing against unit standards
must engage with the moderation system that applies to those standards.
Accreditation requirements and an outline of the moderation system that applies to this
standard are outlined in the Accreditation and Moderation Action Plan (AMAP). The
AMAP 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 Infrastructure ITO askus@infratrain.co.nz if you wish to suggest changes to
the content of this unit standard.
 New Zealand Qualifications Authority 2016