4278 version 6
28-Jun-16
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SPORTS TURF CONSTRUCTION AND
DRAINAGE
Research and design a sports turf
drainage system
level:
7
credit:
15
planned review date:
March 2010
sub-field:
Sports Turf
purpose:
This unit standard is for people who are required to design
sports turf drainage systems. People credited with this
unit standard are able to: research and document the
rationale for intensive sports turf drainage; identify and
document the design and practical requirements; and
design a drainage system for a sports turf surface.
entry information:
Open.
accreditation option:
Evaluation of documentation and visit by NZQA and industry.
moderation option:
A centrally established and directed national moderation
system has been set up by the Primary Industry Training
Organisation.
special notes:
1
For elements 3 and 4, evidence submitted for
assessment must be developed from evaluation of the
drainage system needs of an operational sports turf
organisation. The evidence must contain documented
permission from that organisation for the evaluation to
be undertaken.
Evidence submitted for assessment must be accurate,
written in a style and language which meets the client
organisation’s needs, requirements of current industry
practice, and the presentation standards generally
accepted for sports turf technical documentation.
 New Zealand Qualifications Authority 2016
4278 version 6
28-Jun-16
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SPORTS TURF CONSTRUCTION AND
DRAINAGE
Research and design a sports turf
drainage system
Elements and Performance Criteria
element 1
Research and document the rationale for intensive sports turf drainage.
performance criteria
1.1
Analysis of the rationale for intensive land drainage identifies and explains
criteria which must be addressed in researching drainage requirements.
Range:
1.2
criteria may include but are not limited to – top-soil requirements,
water behaviour, agricultural and horticultural productivity,
cultivation management, design drainage rates, economic benefit,
projected usage intensity, climate.
Analysis of available resource material is used to gather information to
document the contrast between approaches to sports turf drainage and
agricultural and horticulture requirements.
Range:
contrasts may include but are not limited to – drain spacing,
design drainage rate, machinery, backfill materials, mode of
action, practical requirements, timing, surface requirements,
objectives of drainage, rate limiting components.
element 2
Identify and document theoretical design requirements for sports turf drainage.
performance criteria
2.1
Sports turf drainage systems are defined and an example of each category is
documented.
Range:
2.2
drainage systems include but are not limited to – by-pass
drainage, replacement of soil texture, interception/catchwater, soil
conditioning, water table control.
Explanation documents how appropriate drainage systems are selected through
comparison of regional rainfall rates with the design capabilities of different
sports turf drainage systems.
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SPORTS TURF CONSTRUCTION AND
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Research and design a sports turf
drainage system
2.3
Explanation documents the basis of Hooghoudt's drain spacing equation and
describes requirements of each of the key aspects of that equation.
Range:
2.4
Explanation documents how the practical design features of Hooghoudt's drain
spacing equation are assessed objectively in relation to theoretical design
considerations.
Range:
2.5
fundamentals include but are not limited to – terminology, depth of
installation, water table control, storm water control, surface
interception, outfalls, junctioning, inspection devices, blockage,
maintenance, system layout, backfill materials.
Pipe flow dynamics are calculated and documented for selected drainage
systems.
Range:
2.7
key aspects include but are not limited to – storage capacity of
backfill, soil profile permeability, backfill permeability, surface
gradient, backfill type, trench dimensions.
Fundamentals of a pipe drainage system in relation to function and design are
identified and documented.
Range:
2.6
key aspects include but are not limited to – drain spacing,
hydraulic conductivity, depth of rootzone, design drainage rate, slit
spacing, slit width.
pipe flow dynamics include but are not limited to – pipe diameter,
pipe material, flow rate, catchment area, pipe gradient, discharge
length, surcharging.
Influences the use of a range of soil conditioning equipment may have on
function and design of drainage systems are identified and documented.
Range:
equipment includes but is not limited to – mole ploughing, minimoling, vibra-moling, vertical penetrating equipment;
components of function and design may include but are not limited
to – optimum soil conditions, design elements.
 New Zealand Qualifications Authority 2016
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SPORTS TURF CONSTRUCTION AND
DRAINAGE
Research and design a sports turf
drainage system
element 3
Identify and document the practical requirements for sports turf drainage.
performance criteria
3.1
Practical installation methods are identified, reviewed and documented and the
significance for local machinery and material availability are identified.
Range:
3.2
machinery and materials may include but are not limited to –
trench excavators, pavers, hoppers, carry-alls, back-hoes,
trenchless machines, bulldozers, handwork, pipe materials,
backfill materials, rootzone materials;
factors of significance include but are not limited to – costs, depth
of excavation.
Prepared timetable of events and associated documentation show the ideal
installation for sports turf drainage work in terms of key performance influences,
and provides the required information in the format agreed for the work.
Range:
key performance influences may include but are not limited to –
field performance of machinery, turfgrass growth and
development, site conditions, and contractual procedures;
information includes – feasibility study, contract documentation,
tendering, timing of drainage, sequence of events, turf
establishment, Gannt chart, materials sourcing.
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SPORTS TURF CONSTRUCTION AND
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Research and design a sports turf
drainage system
element 4
Design a drainage system for a sports turf surface.
performance criteria
4.1
Design of drainage system is compatible with sports turf surface use, and is
justified in terms of resource use, soils and site conditions
Range:
4.2
drainage systems from which selection is made may include but
are not limited to – physical treatment system, moling system,
water table control, slit drainage system, USGA-type system,
enclosed system, sand carpet system;
sports turf surface use may include but is not limited to – golf,
bowls, winter sports, horse racing.
Design documents identify and explain how theoretical design calculations are
balanced with the practical requirements of the project site.
Range:
areas where balance is required include but are not limited to –
pipe spacing, slit spacing, pipe size, pipe gradient, pipe depth, slit
width, layered profiles, surface gradient, backfill type and depth.
Comments on this unit standard
Please contact Primary Industry Training Organisation standards@primaryito.ac.nz if you
wish to suggest changes to the content of this unit standard.
Please Note
Providers must be accredited by the Qualifications Authority or a delegated interinstitutional body before they can register credits from assessment against unit standards
or deliver courses of study leading to that assessment.
Industry Training Organisations must be accredited by the Qualifications Authority 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.
 New Zealand Qualifications Authority 2016
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SPORTS TURF CONSTRUCTION AND
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Research and design a sports turf
drainage system
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 providers wishing to
develop education and training programmes, such as minimum qualifications for tutors and
assessors, and special resource requirements.
This unit standard is covered by AMAP 0037 which can be accessed at
http://www.nzqa.govt.nz/site/framework/search.html.
 New Zealand Qualifications Authority 2016