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PGMS
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Todd Cochran, CGM Bergen County Dept. of Parks Hackensack, NJ September-October, 2002 Artificial
turf is back in a big way. Responsible, professional grounds managers
may scoff at the idea or shudder at the suggestion that it show up on
their grounds. Rather than be baptized by fire or hide behind the mask
of natural grass purism, we need to be learning what athletic departments,
youth sports organizations and parks and recreation professionals have
been studying for some time. Nobody would
dispute that a well maintained natural grass field is a thing of beauty.
Not only is a real grass field a vision to behold, but also arguably the
most preferred surface to play on. However, these fields of dreams are
intensely managed systems, vulnerable to environmental stresses and cultural
abuses. Natural grass athletic fields are constantly at risk and this
cannot be ignored. Lets also be honest and recognize that athletic
fields that are in top condition are, for the most part, the exception
rather that the rule. Most of us are familiar with football fields that
are dirt between the 40s and the hash- marks, and soccer fields
with wallowed out goalmouths. Re-sodding is expensive and must be done
repeatedly. Several professional sports venues have installed modular
systems with grass growing in exchangeable trays with mixed results and
at great expense. Demand for
field use is at historical highs. In highly developed urban and suburban
areas most programs have a deficit of facilities. To take a field out
of play for renovation or rest would drastically impact programming. Synthetic
fields play right away, look good and can be used day and night, all 12
months without having to take warm or cool seasons into consideration. In addition
to accommodating programming immediately after installation, artificial
turf offers the benefit of extremely low maintenance. As the sales reps
say, No mow, no grow, no H20!. Periodic grooming of the field
amounts to the dragging of a topdressing brush once a month. This brushing
of the turf can impart a pattern similar to the effect of mowing ryegrass
in opposite directions but the primary objective is to maintain a consistent,
level surface. Site visits and interviews with field managers indicate
that prescribed maintenance is often ignored because the field looks so
good, they dont bother brushing it. At the opposite end of the spectrum
are those that brush the field so often that the field is worn out prematurely
and winds up looking like fine fescue or something youd expect to
find in an Easter basket. Artificial
turf in its most current and popular form consists of a mat of tufted
polyethylene fibers rather than the infamous densely woven rugs known
for causing foot-lock injuries and turf toe. Since polyethylene
is a lazy fiber, it is supported with an infill brushed into
the mat. Infill systems vary with the manufacturer. The two most common
are straight crumb rubber made from recycled tires or a mixture of prescription
sand, rubber granules and ground-up Nike sneakers. Each manufacturer will
boast of the virtues of their system and the flaws of the competition.
Regardless of the supplier, infill systems make the turf stand up and
provide shock absorption in an attempt to emulate a natural grass fields
play characteristics and to provide a consistent, safe surface. Appearance
of the field is dictated by the degree in which the fibers are split,
or fibrillated. Initially, the fibers are wide and resemble tall fescue
or centipede grass. Fibers are split to create an appearance according
to customer preference or to favor a particular sport. The best looking
fields bear a striking resemblance to a natural rye/bluegrass field. Boundary
lines, yard and hash marks, end zones and logos can all be integrated
permanently into the field in a variety of colors eliminating the need
to paint for the life of the field. At least one manufacturer will supply
tan colored fibers to use in place of the skinned area of a softball field.
New installations
of synthetic turf are laid atop sub-bases of stone and drainage pipe.
These fields are able to handle extreme volumes of water keeping the field
playable in virtually all conditions. In at least one installation, the
subsurface drainage system of the athletic field doubles as a retention
device thereby eliminating the need to create a structure elsewhere on
the site. Manufacturers
of artificial turf like to draw parallels from nature. Whether they are
sound in principle or used to present an alien product to us in terms
we are familiar with is left for you to decide. One thing is for certain.
Competition for sales can be more intense than the games played on the
field. With prices typically $6.00 to $11.00 per square foot, suppliers
are anxious to bid on your job. For those
who have no experience with artificial turf it may be prudent to start
your research now. You may find it quite enlightening and at the very
least youll be prepared to state your case against it or be sure
you are buying what you need and getting what you pay for. |