Traditional
System:
Two typical methods of golf
course construction are the Texas USGA method and the
Cambridge sports field system. The Texas USGA method
employs a number of horizontal layers of graded
aggregate laid over a sub-grade. Drainage pipes are laid
in the sub-grade and back-filled with aggregate.
Topsoils are placed over the aggregate layers with a
specific root-zone mix placed prior to placement of
turf. Drainage is reasonably efficient, but total
topsoil depths of 400 -500 mm must be constructed to
provide adequate drainage layers.
The Cambridge method involves the use of permeable sand
trenches cut into the topsoil and sub-soil that drain to
equally spaced drainage pipes laid under a drainage bed
of aggregate.
These are supplemented with the use of highly permeable
topsoils often with limited growing capacity. Vertical
drainage is reasonably efficient. Horizontal drainage,
however, is poor as the system relies upon lateral
movement of water for capture.
Water does not flow laterally within a soil to any great
extent. It generally travels downward vertically and
therefore a horizontal drainage system that can capture
all infiltrated water and transport it laterally to
other areas will provide the most effective removal of
water from the playing surface. The USGA method is such
a system, however the large aggregate volume required to
provide sufficient drainage makes such a system very
costly to construct.
Atlantis
System:
If it was possible to replace the aggregate drainage
layers with another material providing the same drainage
capability (at a vastly reduced volume), it would be
possible to build a golf course on as little as 250 -300
mm of imported soil. The Atlantis Drainage Cell System
can provide just that. A cellular drainage product
designed specifically for sub-surface drainage
applications, it has a surface void space of more than
60%, and a void volume of more than 85%. Consider this
in comparison to aggregate, which provides about 40% of
its total volume as void space for drainage and water
retention.
The successful Atlantis Ecological Golf Course System
provides golf courses with a sustainable, efficient and
low maintenance drainage system that maintains playing
surface quality of the while managing potential
environmental impacts. Because traditional drainage
practices don’t provide an ecologically sustainable
method of water management golf courses are coming under
scrutiny by regulatory authorities due to environmental
impacts such as nutrient run-off. Traditional methods of
drainage only add to the exponential degradation of
water quality. To preserve water quality and replenish
groundwater resources infiltration principles must be
utilised.
The natural principles of drainage inherent in the
Atlantis Ecological Golf Course System allows water to
immediately infiltrate the ground, eliminating surface
run-off and erosion. Initially, a golf course inevitably
requires a large tract of land to be almost entirely
cleared of vegetation and topsoil, allowing course
construction, earth moving and landscaping. Golf course
construction process, subsequent turf and grounds
maintenance programs significantly increase the
potential impact upon waterway pollution.
Damage caused during construction is
somewhat alleviated with new landscaping, however damage
caused to subsoil layers ultimately limits the
infiltration capacity of the entire golf course. To
achieve a reversal of the environmental damage it is
necessary to account for lost infiltration and reduced
groundwater recharge. Infiltration is the process of
rainfall soaking into the ground under natural
conditions. Efficient infiltration depends greatly on
soils, ambient flora conditions and the land-use
associated with the area. The Atlantis Ecological Golf
Course System’s artificially recreates the natural
hydrological infiltration processes.
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