Toro GDC Off-Fairway Design
Herringbone Lateral Piping Systems
Toro GDC Integrated Design
Looped Lateral Piping Systems
Toro GDC Off-Fairway Design
Looped Lateral Piping Systems
Figure 1
Control system layout with one station decoder or integrated decoder at each sprinkler
Figure 2
Control system layout with decoders “off-fairway” on a simple 2 run looped lateral design
Figure 3
Control system layout grouping decoders at every other lateral valve box
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FEATURES
TORO GDC ADVANTAGES
FEATURES
TORO GDC ADVANTAGES
FEATURES
TORO GDC ADVANTAGES
For looped lateral designs, it is customary to use either an integrated
decoder like the DTi series or by connecting a 1-station decoder directly to
or next to the sprinkler head. This is the preferred style for designers who
use the IC Decoder, however the Toro GDC System still has a number of
advantages with this design style.1
By simply modifying this looped lateral design to an off-fairway control
system layout, you can now divide the sprinklers into multiple zones. This
will allow you to group decoders in valve boxes located along the main
line where they can be more easily serviced without disrupting the field of
play. The example above shows five valve box locations.
Although it is possible to use integrated decoders with herringbone
laterals (the way the Rain Bird IC Decoder has to), a field based decoder
irrigation system gives you many advantages, including placing decoders
off the field of play for easier maintenance.
Looped lateral designs have typically
Looped lateral designs typically
Herringbone lateral piping designs
consist of lateral pipes placed across
fewer supply points (taps) to the main
line and are normally characterized by
one to three pipes which cut across
the fairway to supply water to the
laterals and several lateral pipes which
connect to the sprinklers and run along
the length of the fairway. This design
is more typically used for systems
with three or fewer rows of sprinklers.
Because of the reduced number of
supply taps to the mainline and the
length of the lateral pipe used, larger
minimize the number of taps on the
main line. Normally, the decoder
communication layout follows the pipe
layout. However, with the addition
of just one or two additional trenches
the fairway which each feed a smaller
• The amount of critical 2-wire decoder communication cable can be
reduced by up to 75%
quantity of sprinklers across the fairway.
This is especially common for designs
with three or more rows of sprinklers.
This design style allows you to use
smaller pipe sizes and requires more
mainline taps, but can operate more
sprinklers at one time. Sometimes every
lateral has a mainline tap, other times a
tap is placed on every other lateral.
•
•
•
Fewer surge ground points than the IC Decoder (50% less)
• The amount of critical 2-wire decoder communication cable can be
reduced by up to 75%
Lower initial cost Reduced ongoing maintenance
- Decoders can be placed in valve boxes out of the field of play for
easier maintenance
-
Decoders can be placed in valve boxes out of the field of play for
easier maintenance
Decoder can be replaced without removing the solenoid
(
see figure 2) for the DTS wire, it is
Higher reliability Lower maintenance costs
Lower maintenance costs
Higher reliability Lower maintenance costs
Ease of maintenance
Ease of maintenance
possible to create an off-fairway design
and place the decoders in secure valve
boxes out of the field of play without
changing the pipe layout plan.
The Toro GDC System offers higher surge protection than the IC
Decoder
• The amount of critical wire splices on the 2-wire decoder
communication cable can be reduced by up to 80%
•
The amount of critical wire splices on the 2-wire decoder
communication cable can be reduced by up to 80%
Better reliability Lower maintenance costs
-
Use lower cost DTS wire and non-critical wire splices to connect
decoders to heads for a lower installed cost
•
The GDC decoder can be placed next to the head where both it and
the wiring can be protected by a valve box, the IC decoder cannot
protect any wiring around the head
-
Use lower cost DTS wire and non-critical wire splices to connect
decoders to heads for a lower installed cost
Higher reliability Lower maintenance costs
Higher reliability Lower maintenance costs
Ease of maintenance
Ease of maintenance
Lower maintenance costs
•
•
The amount of surge ground points can be decreased by up to 85%
and moved completely off the playing areas
pipe sizes are normally required in order
to have sufficient watering capacity. This
is the preferred option for designers who
use the RainBird IC Decoder.
• If possible, you can reduce costs by operating two sprinklers with a
single station, and potentially make use of multiple station decoders,
with a 2-station decoder operating up to four sprinklers or a 4-station
decoder operating up to 8 sprinklers
•
•
The amount of surge ground points can be decreased by up to 85%
and moved completely off the playing areas
- Place surge protection points outside the field of play
- Place surge protection points outside the field of play
Lower cost Lower maintenance costs Ease of maintenance
Cost savings
Lower cost Lower maintenance costs Ease of maintenance
Fewer wire splices (critical wire splices) along the main
communication line
Fewer wire splices (critical wire splices) along the main
communication line
-
Decoders & all splices are in easy service valve boxes, off the field of
play (this cannot be done with IC decoder)
-
Decoders & all critical splices are in easy service valve boxes, off the
field of play (this cannot be done with IC decoder)
Ease of maintenance Playability
Ease of maintenance Playability
•
Maintain individual head control with multi-station decoders
•
Maintain individual head control with multi-station decoders
-
Offer the flexibility of individual station control, or the cost savings of
multiple heads per stations and multiple station decoders.
-
Offer the flexibility of individual station control, or the cost savings of
multiple heads per stations and multiple station decoders.
Flexibility Cost savings
Flexibility Cost savings
•
•
Decoder can be replaced without removing the solenoid
•
•
Decoder can be replaced without removing the solenoid
Lower maintenance costs No digging required
1Note: While using this approach for the Toro GDC provides the same design and benefits
of the Rain Bird IC Decoders it only makes the two systems equal. This choice is easy to
implement, but will not take advantage of the other Toro benefits, so this option provides
the fewest Toro benefits, sales advantage and virtually no cost savings, but is the same as the
Rain Bird approach.
Lower maintenance costs No digging required
The Toro GDC System offers higher surge protection than the IC Decoder
The Toro GDC System offers higher surge protection than the
IC Decoder
Better reliability Lower maintenance costs
Better reliability Lower maintenance costs
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| Categories | Sprinkler and Irrigation Manuals, Toro Sprinkler and Irrigation Manuals |
|---|---|
| Tags | Toro GDC Series |
| Download File |
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| Language | English |
| Product Brand | Toro. Customer Service Representatives are available by phone:
Monday - Friday 7:30 a.m. to 9:00 p.m. (CDT) - Saturday 8:00 a.m. to 8:00 p.m. (CDT) - Sunday 10:00 a.m. to 8:00 p.m. (CDT)
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| Publisher | toro.com |
| Wikipedia's Page | Toro Company |
| Copyright | Attribution Non-commercial |
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