Specs

Bridgestone Retail Operations, LLC
PROJECT MANUAL
Version: January 2012
D. Expansion Loops: Construct by wrapping wire around 1/2 inch diameter pipe to create
coil. A 3 foot section of wire shall be used to create 12 inch coil with 6 foot section being
used to create 24 inch coil.
1. Provide 12 inch coils at each wire splice, not including valves, and at each
change of wire direction.
2. Provide 24 inch coils at each control valve and where each valve enters conduit
for automatic controller.
3.09 BACKFILLING
A. Sand or fine-grained soils shall be used for initial backfill to sufficient depth to prevent
damage to pipe from rocks or other debris during compaction of subsequent backfill.
B. Fill trench to within 3 inches of finish grade with excavated soil and compact in accordance
with Section 02300.
C. Fill top 3 inches with existing topsoil in planting or turf areas and wheel roll until
compaction of backfill is same as surrounding soil.
D. Grade backfilled trench uniform with surrounding grades.
3.10 BACKFLOW PREVENTOR
A. Comply with local codes for installation of backflow preventor. In absence of local codes,
install in ac-cordance with manufacturer's written instructions.
B. Provide combination of drains and quick coupler valves to accommodate winterization of
entire system by forced air. Submit materials and methods to Owner for consideration and
receive approval prior to installation of work.
3.11 AUTOMATIC CONTROLLER
A. Location and installation shall be as shown on the Drawings and approved by Owner prior
to installa-tion.
B. Provide rigid conduits for both power supply and control wiring.
1. Control wire conduit shall extend to 18 inches below grade.
2. Secure conduit to wall with anchors and screws.
C. Provide electrical grounding for controller in accordance with manufacturer's written
instructions.
3.12 FIELD QUALITY CONTROL
A. Inspection and Adjustments: Following installation, make final adjustments to lawn
irrigation system prior to Owner's final inspection.
1. Flush system completely, with nozzles and screens removed, to extract debris.
2. Verify sprinkler operation and alignment for direction of throw. Correct as
necessary.
3. Check pop-up spray nozzling for proper arc of spray with no overthrow onto
pavement. Adjust nozzles as necessary for proper throw.
4. Insure uniform distribution exists.
5. Insure proper sprinkler head operational after landscaping and/or sod installation.
B. Demonstration: Following final adjustment, operate entire installation to demonstrate
complete and successful operation of equipment.
END OF SECTION
IRRIGATION SYSTEM 02810 - Page 8 of 8