\* \* \* \* \* \* \* \*

REMOVE THIS OUTLINE GUIDE BEFORE PLACING

THE SPECIFICATION SECTION IN THE CONTRACT

\* \* \* \* \* \* \* \*

[DIVISION 2 : SITE CONSTRUCTION ]{.underline}

SECTION 02814 - LANDSCAPE IRRIGATION

USE: Furnishing and installing a piped underground irrigation system
with piping, sprinkler heads, valves, and controls.

**NOTES TO SPECIFIER:**

A. Options within paragraphs are identified by enclosure in brackets;
blank spaces enclosed by brackets \[[ ]{.underline}\] provide for
information to be inserted, as appropriate to individual projects.

B. **TO AVOID CONFLICTING REQUIREMENTS AND COSTLY MISTAKES,** the
specifier must edit (delete, substitute or add to the text). The
remaining paragraphs must be renumbered.

C. DELETE FOR FINAL COPY: Notes to the Specifier, located between lines
of asterisks; all \[brackets\], [underlining]{.underline}, **boldface,
**and *italics* within the paragraphs; and this page. (Open Reveal Codes
\[alt F3\] to do this accurately).

D. [To Edit "(Footer B)":]{.underline} (Corel 8). **ENTIRE FOOTER SHOULD
BE BOLDED. **Click in the footer and delete the "Project Name (ftr B)"
text and replace it with the **Name Of The Project (upper/lower case).**
Replace date with current MM/YY (WITHOUT BRACKETS).

E. The Guide Specifications are intended to be continuously reviewed and
revised. User's technical comments are appreciated. Also, other related
or similar specifications that are written "from scratch" that could
benefit others, or other questions can be sent to NSTC A/E Group, ST-110
or call (303) 987-6851.

F. DESIGN NOTES: This guide is essentially a performance specification,
which requires the Contractor to design the irrigation system and submit
it for approval. While comprehensive, it may not include everything
necessary for specific situations. Users should verify availability of
water in sufficient quantities at the necessary (stated) pressure to
operate the system. Backflow prevention requirements should be verified
to satisfy codes and local authorities having jurisdiction over the
water supply.

1\. **DRAWING DATA REQUIRED: **Provide plans showing desired coverage of
system, and generalized schematic layout. Indicate point(s) of
connection to water supply line(s). Provide any specific details of
installation not covered by performance requirements or other
specification provisions.

**REVISIONS OF THIS SECTION:**

CSI format, editorial changes 9/99

Metric: Not Applicable

Technical Update: 3/00

SECTION 02814

LANDSCAPE IRRIGATION

[PART 1: GENERAL]{.underline}

1.1 SUMMARY

A. Section Includes: Furnishing and installing piped underground
\[drip\] irrigation \[sprinkler\] system with piping, \[sprinkler
heads\], \[emitters\] valves, and \[manual\] \[electric solenoid-\]
\[hydraulic\] \[thermal hydraulic\] controls and also \[low point self\]
\[pressure blow‑out\] \[manual\] drain.

B. Related Sections:

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LIST ITEMS OF WORK THAT MIGHT LOGICALLY BE FURNISHED AD INSTALLED UNDER
THIS SECTION, BUT INSTEAD ARE SPECIFIED IN ANOTHER SECTION. THIS ARTICLE
IS RARELY REQUIRED.

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1.2 SYSTEM DESCRIPTION

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INSERT APPLICABLE CONSTRAINTS AND DESIGN CRITERIA WHEN THE CONTRACTOR IS
DESIGNING SYSTEM.

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A. Performance Requirements: This system is designed with a water
pressure minimum of 35 psi (241 kPa) maximum of \[\_\_\_\] psi
(\[\_\_\_\] kPa) at connection to main \[meter\] \[building\] \[backflow
prevention device\] and \[\_\_\_\] psi (\[[ ]{.underline}\] kPa) at the
last head in each zone. \[Provide system pressure calculations and
irrigation requirements of the area.\] If pressure falls above or below
indicated values, Contractor shall notify Contracting Officer.

B. Schedule: Irrigation shall be accomplished on \[\_\_\_\_\_\] days of
the week between the hours of \[\_\_\_\] and \[\_\_\_\].

C. Required Irrigation: \[Turf\] \[and\] \[ground covers\] require
\[\_\_\_\_\] inches per \[week\] adjustable in a range of \[\_\_\_\_\]
to \[\_\_\_\_\] inches per \[week\]. Shrubs and trees require a minimum
of \[\_\_\_\_\] gal/day \[per inch of caliper\]. \[Shrubs and trees
shall be watered by drip irrigation.\] \[Drip system shall be adjustable
to accommodate growth.\]

1.3 SUBMITTALS

A. General: Submittals shall be according to \[Section 01009 ‑ General
Information and Requirements.\] \[Section 01330 ‑ Submittal
Procedures.\] \[and\] \[Section 01331 ‑ Certificates.\]

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LIST THE ITEMS FROM CATALOG DATA OR DELETE \"FOLLOWING\".

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B. Manufacturer\'s Catalog Data and Literature: Submit three copies of
the manufacturer\'s descriptive data for the following components to be
used on this project:

1\. Control system

2\. Piping materials, tubing, and fittings

3\. Valves and accessories

4\. Sprinkler heads

5\. Backflow preventers

6\. Automatic controller

7\. Solvent cement

8\. Control wiring

9\. Drip irrigation equipment and accessories

10\. Water hammer arresters

11\. Water meter

12\. Rain shut‑off device

13\. Freeze shut‑off device

14\. Soil moisture sensor

15\. Tapping tee

16\. Valve boxes and lids

C. Installation Instructions: Submit three copies of the manufacturer\'s
installation instructions for the following components of the
underground sprinkler system to be used on this project:

1\.

D. Maintenance and Operation Instructions: Submit \[[ ]{.underline}\]
copies of the manufacturer\'s maintenance instructions for maintaining
the underground sprinkler system to be used on this project.
Instructions shall include operation of the controls, seasonal
activities and shutdown.

E. Certificates of Conformance: Submit \[[ ]{.underline}\] copies of
written certification from the supplier of the Contractor‑furnished
items to be used on this project that they conform to the requirements
of this specification section.

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SUBPARAGRAPH 2 IS FOR DESIGN/BUILD PROJECTS. Use when the Contractor is
submitting the design for approval.

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F. Shop Drawings:

1\. Submit three copies of Irrigation drawings prepared by a licensed,
registered or certified Landscape Architect.

2\. Submit three copies of Sprinkler System drawings including legend
showing the following:

a\. The layout of piping, heads, valves, controllers, backflow
preventers, sensors and the water source, including mains, meters and
other adjacent utilities.

b\. Location of sleeves under pavement.

c\. Location and coverage of \[sprinkler heads\] and
\[bubbler/drip/emitter heads\] and coefficient of uniformity.

d\. Plant and landscaping features.

e\. Site structures and obstacles that may interfere with the coverage
of the system.

f\. Schedule of fittings to be used on this project. Also include the
manufacturer\'s parts catalog. Drawings shall be \[same\] \[larger\]
scale as the full-size Contract Drawings.

g\. Total number of heads of different types, numbers of circuits, and
lengths and sizes of piping.

h\. System and supply pressures.

i\. Wiring diagram between existing power source and controller/water
pump.

j\. Legend.

G. Detail Drawings: Submit \[\_\_\_\_\] copies of details showing
\[sprinkler\] \[bubbler/drip/emitter\] head installation, pipe trench
section, installation of backflow prevention units, and schematic of
control wiring or piping.

H. Design Data: Submit \[[ ]{.underline}\] copies of performance curves
showing the performance characteristics of the underground sprinkler
system to be used on this project.

I. Plant Watering Schedule: Submit \[[ ]{.underline}\] copies of the
proposed daily and weekly watering schedule. Indicate the location and
number of proposed Watering Zones.

J. Samples: Provide one sprinkler, bubbler and drip head with housing of
each type to be used on this project. \[Accepted samples may \[not\] be
used in the work.\]

1.4 DELIVERY, STORAGE, AND HANDLING

A. Delivery: Deliver materials in original rolls, packages, cartons, and
containers with the name of manufacturer, brand, and model. Inspect
materials delivered to the site for damage.

B. Storage: Store materials on site in enclosures or under protective
covering. Store \[plastic piping and\] rubber gaskets under cover out of
direct sunlight. Do not store materials directly on ground. Keep inside
of pipes and fittings free from dirt and debris.

C. Handling: Handle and carry pipe, fittings, valves, and accessories in
such a manner as to ensure delivery to trench in sound undamaged
condition. Do not drag pipe.

1.5 SYSTEM STARTUP

A. Installer\'s Field Services: Prepare and start systems. Provide one
complete spring startup and one fall shutdown. \[Provide instruction to
Government personnel as specified in Section 01780 - Closeout
Submittals.\]

1.6 MAINTENANCE

A. Extra Materials: Provide the following extra components:

1\. 2 \[sprinkler heads including nozzles, bodies, screens\] \[emitter\]
of each type and size

2\. 2 valve keys for manual valves

3\. 2 valve box keys

4\. 2 keys for valve markers

5\. 2 wrenches for each type head core and for removing and installing
each type head.

6\. 4 keys for irrigation-controller housing boxes

7\. 4 irrigation controller enclosure keys

8\. 2 hand‑held remotes compatible with controller system

B. Schedule: Furnish a schedule indicating the length of time each valve
is required to be open to provide a determined amount of water.

[PART 2: PRODUCTS]{.underline}

2.1 PIPING MATERIALS

A. Copper Tubing and Associated Fittings:

1\. Tubing shall conform to requirements of ASTM B 88, Type K. Fittings
shall conform to ASME B16.22 and ASME B16.18, solder joint.

2\. Solder shall conform to ASTM B 32 95-5 tin-antimony.

3\. Flux shall conform to ASTM B 813.

B. Red Brass Pipe and Associated Fittings:

1\. Pipe shall conform to requirements of ASTM B 43, regular.

2\. Fittings shall be Class 250, cast bronze threaded conforming to the
requirements of ASME B16.15.

C. Galvanized Steel Pipe and Associated Fittings:

1\. Pipe shall conform to requirements of ASTM A 53, Schedule 40.

2\. Fittings shall be Class 150 conforming to requirements of ASME
B16.3.

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PVC PIPE MAY BE USED BELOW FROST LINE OR WHERE PIPING SYSTEM CAN BE
WINTERIZED. USE SCHEDULE 40 PVC FITTINGS WITH SOLVENT WELD; DO NOT USE
THREADED SCHEDULE 40 PIPE. FOR RISERS USE BRASS PIPE OR SCHEDULE 80 PVC
PIPE WITH SCHEDULE 80 PVC THREADED FITTINGS. LOCATE ALL RISERS AWAY FROM
WALKS. USE SOLVENT CEMENT FOR UNTHREADED PVC PIPE AND FITTINGS. ASTM D
1785, PVC 1120, SCHEDULE 40 IS TYPE I, GRADE 1 AND WALL THICKNESS OF
SCHEDULE 40. ASTM D 1785, PVC 1120, SCHEDULE 80 IS TYPE I, GRADE 2 AND
WALL THICKNESS OF SCHEDULE 80. ASTM D 2241, PVC 1120, SDR 21 IS TYPE I,
GRADE 1 AND STANDARD DIMENSION RATIO OF 21.

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D. Polyvinyl Chloride (PVC) Pipe, Fittings and Solvent Cement:

1\. Pipe shall conform to the requirements of ASTM D 1785, PVC 1120
Schedule \[40\] \[80\]; or ASTM D 2241, PVC 1120 SDR 21, Class 200.

2\. Fittings: Solvent welded socket type fittings shall conform to
requirements of ASTM D 2466, Schedule 40. Threaded type fittings shall
conform to requirements of ASTM D 2464, Schedule 80.

3\. Solvent Cement: Solvent cement shall conform to the requirements of
ASTM D 2564.

E. Polyethylene (PE) Plastic Piping:

1\. Pipe shall conform to AWWA C901, outside diameter base with
dimension ratio (DR) of 9.3 to provide 1034 kPa (150 psi) minimum
pressure rating.

2\. Fittings shall conform to ASTM D 3261, DR of 9.3.

F. Dielectric Fittings: Provide dielectric fittings between copper and
ferrous metal piping materials.

1\. Fittings shall conform to ASTM F 441, Schedule 80, CPVC threaded
pipe nipples, 4 inch (100 mm) minimum length.

G. Drip Irrigation Tubing: ASTM D 2287, maximum inside diameter (id) of
\[1/8\] \[1/4\] \[3/8\] \[1/2\] \[3/4\] \[1\] inch) (\[3\] \[6\] \[10\]
\[13\] \[19\] \[25.40\] mm) vinyl plastic extruded from non‑rigid
chloride, integrally algae‑resistant, homogeneous throughout, smooth
inside and outside, free from foreign materials, cracks, serrations,
blisters and other effects. Provide \[slip\] \[barbed\] \[compression\]
fittings.

2.2 IRRIGATION AND DRIP SPRINKLER HEADS

A. Stream Rotor Irrigation Head, Full or Part Circle: \[Fixed Riser\]
\[Pop-Up\] sprinkler. Heavy duty, stainless steel internal construction
with heavy‑duty, ultra‑violet resistant plastic body, nozzle, and
screen. \[Fixed\] \[Pop‑up\] height of \[3\] \[4\] \[6\] \[12\] inches
(\[75\] \[100\] \[150\] \[300\] mm) as measured from top of cap at
normal installation to middle of nozzle orifice. \[Provide check valve
in head.\]

B. Gear Rotor Irrigation Head, Full or Part Circle: \[Fixed Riser\]
\[Pop-Up\] sprinkler. Heavy duty, stainless steel internal construction
with heavy‑duty, ultra‑violet resistant plastic body, with matched
precipitation rates for \[standard\] \[low\] angle trajectories.
Single‑stream, water lubricated, gear drive type capable of covering
\[\_\_\_\] feet (\[\_\_\_\] mm) radius at \[\_\_\_\] psi (\[[
]{.underline}\] kPa) with distribution rate of (\[\_\_\_\] gpm
(\[\_\_\_\] L/s). Part circle sprinkler with an adjustable arc coverage
of 0.52 to 6.28 rad (30 to 360 degrees). \[Fixed riser\] \[Pop‑up\]
height of \[3\] \[4\] \[6\] \[12\] inches (\[75\] \[100\] \[150\]
\[300\] mm) as measured from top of cap at normal installation to middle
of nozzle orifice. Provide wiper seal that positively seals against
nozzle flange to keep debris out of rotor and cleans debris from pop‑up
steam as it retracts. \[Provide check valve in head.\]

C. Impact Irrigation Head: \[Fixed Riser\] \[Pop-Up\] sprinkler capable
of covering \[\_\_\_\] feet (\[\_\_\_\] mm) radius at \[\_\_\_\] psi
(\[\_\_\_\] kPa) with a distribution rate of \[\_\_\_\] gpm
(\[\_\_\_\] L/s). Provide two nozzles to distribute water, an inlet
strainer to prevent debris from clogging nozzles, and non‑corrosive
\[brass\] \[plastic\] head and stainless steel assemblies. Seal bearing
assembly from abrasives. Provide entire assembly including strainer
removable from top of case without disturbing case installation. Provide
plastic housing. \[Fixed riser\] \[Pop‑up\] height of \[3\] \[4\] \[6\]
\[12\] inches (\[75\] \[100\] \[150\] \[300\] mm) as measured from top
of cap at normal installation to middle of nozzle orifice.

D. Spray Irrigation Head, Full or Part Circle: \[Fixed Riser\]
\[Pop-Up\] sprinkler capable of covering \[\_\_\_\] feet (\[\_\_\_\] mm)
radius at \[\_\_\_\] psi (\[\_\_\_\] kPa) with a discharge rate of
\[\_\_\_\] gpm (\[\_\_\_\] L/s). Sprinkler body, nozzle, and screen
constructed of heavy‑duty, ultra‑violet resistant plastic with wiper
seal. \[Brass\] \[Plastic\] nozzle with matched precipitation rate and
an adjustable screw capable of regulating the radius and flow. Capable
of housing under the nozzle; protective, non‑clogging filter screen
and/or pressure compensating devices. Screen used in conjunction with
the adjusting screw from regulating. Pop‑up height of \[3\] \[4\] \[6\]
\[12\] inches (\[75\] \[100\] \[150\] \[300\] mm) as measured from the
top of cap at normal installation to middle of nozzle orifice. \[Provide
check valve below each sprinkler body on riser.\]

E. Adjustable Flood Bubbler Head: \[Fixed Riser\] \[Pop-Up\] capable of
providing a discharge rate of \[\_\_\_\] gpm (\[\_\_\_\] L/s) at
\[\_\_\_\] psi (\[\_\_\_\] kPa), operating over a pressure range of 10
to 60 psi.(69 to 414 kPa). Constructed of durable ultra‑violet resistant
plastic with a plastic inlet filter screen to protect the nozzle against
clogging, and a stainless steel adjustable screw, capable of shutting
off the bubbler and regulating the flow.

F. Pressure Compensating Flood Bubbler Head: \[Fixed Riser\] \[Pop-Up\]
capable of providing a consistent discharge rate of \[\_\_\_\] gpm
(\[\_\_\_\] L/s) at \[\_\_\_\] psi(\[\_\_\_\] kPa). Plastic inlet filter
screen bubbler assembly to protect the nozzle against clogging.
Permanently assembled design constructed of durable, ultra‑violet
resistant plastic with a integral rubber flow washer for regulating the
discharge rate at an operating pressure range of 20 to 90 psi (138 to
621 kPa).

G. Fixed Drip Head:

1\. Multi‑Port Outlet Device: \[Multi‑outlet, pressure compensating
emitter manifold that is ultra‑violet resistant, algae, and heat
resistant, non‑corrosive PVC material for above or below grade
installation. Integral 200 mesh (75 micrometers) fabric screen that can
be serviced from the top of the unit by unscrewing the top cap. \[Six\]
\[eight\] \[twelve\], \[top\] \[bottom\] mounted outlet ports that will
accept \[1/8\] \[1/4\] inch (\[3\] \[6\] mm) vinyl tubing. The \[six\]
\[eight\] \[twelve\] ports can be accessed through the top of the unit
by unscrewing the lid from the base. Each outlet port accepts a pressure
compensating emitter controlling the flow from 1.89 to 90.84 L/h (0.5 to
24.0 gph) per outlet. Operating range of unit is 103 to 345 kPa with 13
mm (15 to 50 psi with 1/2 inch) female national pipe thread (FNPT)
inlet.\] \[Multi‑outlet, pressure‑compensating emitter constructed of a
ultra‑violet resistant algae and heat resistant, non‑corrosive PVC
material. Diaphragm/flap constructed of a silicone elastomer material.
Pressure‑compensated emitter with each outlet delivers a nominal flow of
\[1.89\] \[3.79\] \[7.57\] L/h (\[0.5\] \[1.0\] \[2.0\] gph) at 103 to
345 kPa (15 to 50 psi). \[Three\] \[four\] \[six\] barbed outlet unit
that will accept \[1/8\] \[3/4\] inch (\[3\] \[6\] mm) vinyl tubing with
continuous \"self flushing\" emitter feature.\]

2\. Single Outlet Pressure Compensating Emission Device: \[Pressure
compensated\] emitter body constructed of ultra‑violet, algae, heat
resistant and chemical resistant, non‑corrosive PVC material. Diaphragm
constructed of a silicone elastomer material. Capable of delivering a
nominal flow rate of \[0.5\] \[1.0\] \[2.0\] gph (\[1.89\] \[3.79\]
\[7.57\] L/h) at a pressure range of 15 to 50 psi (103 to 345 kPa). \[A
self piercing inlet barb type\] 1/2 inch (13 mm) female national pipe
thread (FNPT) inlet mounted onto a 1/2 inch (13 mm) male national pipe
thread (MNPT) riser.\] Barbed emitter outlet configuration that will
accept \[1/8\] \[1/4\] inch (\[3\] \[6\] mm) vinyl tubing.

3\. Microspray Device: Capable of covering 0 to 15 feet (0 to 4500 mm)
radius at \[\_\_\_\] psi (\[\_\_\_\] kPa) with a discharge rate of
\[\_\_\_\] gph (\[\_\_\_\] L/h) with overall height of \[4\] \[6\]
\[12\] inches (\[100\] \[150\] \[300\] mm). Sprinkler body, nozzle, and
screen constructed of heavy‑duty, ultra‑violet resistant plastic with
wiper seal on sprinkler. Matched precipitation rate \[brass\]
\[plastic\] nozzle with an adjustable screw capable of regulating the
radius and flow and capable of housing under the nozzle; protective,
non‑clogging filter screens and/or pressure compensating devices. Screen
used in conjunction with the adjusting screw for regulating. Mount with
1/2 inch (13 mm ) female national pipe thread (FNPT) adapter \[poly flex
riser stake\].

4\. In‑Line Tubing Device: Factory installed, heavy‑walled flexible
polyethylene (PE) tubing, pressure compensating, self‑cleaning emitters
at spacings of \[12\] \[18\] \[24\] \[36\] inches (\[300\] \[450\]
\[600\] mm). Emitter flow of \[0.5\] \[1.0\] \[2.0\] gph (\[1.89\]
\[3.79\] \[7.57\] L/h) with inlet pressure of \[\_\_\_\] psi
(\[\_\_\_\] kPa). Tubing diameter of \[1/2\] \[3/4\] inch (\[13\]
\[19\] mm ).

2.3 VALVES

A. Valves, Less than 3 Inches (75 mm): Ball valves shall be MSS SP-80,
Type 1, Class 125, threaded ends. Gate valves shall be API STD 598,
\[brass\] \[plastic\] body, \[threaded\] \[soldered\] ends.

B. Gate Valves, 3 Inches (75 mm) and Larger: AWWA C500, bottom wedging
double discs, parallel seats, non‑rising stems, open by counterclockwise
turning. Provide flanged end connections. Provide bronze interior
construction of valves including stem containing a maximum 2 percent
aluminum and maximum 16 percent zinc.

C. Pressure Regulating Master Control Valve: Automatic mechanical
self‑cleaning, self‑purging control system having an adjustable pressure
setting operated by a solenoid on alternating current (ac) with \[0.70\]
amperes at \[18\] \[24\] volts. \[Direct current (dc) latching with
\[\_\_\_\_\] amperes at \[\_\_\_\_\] volts.\] Valve shall close slowly
and be free of chatter in each diaphragm position. Provide a manual flow
stem to adjust closing speed and internal flushing. Provide an adjusting
screw for setting pressure and schrader valve for monitoring pressure.
Provide \[one\] \[two\] inlet tappings capable of being installed as a
straight pattern valve. Provide heavy duty \[cast iron\] \[brass\]
\[plastic\] valve body with brass seat that is removable and serviceable
from top without removing valve body from system. Maximum working
pressure of valve is 150 psi (1034 kPa) and pilot range from 10 to 125
psi (69 to 862 kPa).

D. Remote Control Valve, Electrical: Solenoid actuated \[globe\]
\[angle\] valves of 3/4 to 3 inch (20 to 75 mm) size, \[alternating
current (ac), 60/50 cycle \[\_\_\_\_\_\] amps in rush current and
\[\_\_\_\_\_\] amps holding current.\] \[Direct current (dc) latching
with \[\_\_\_\_\_\] amperes at \[\_\_\_\_\_\] volts.\] Provide \[brass\]
\[plastic\] valve housing suitable for service at 150 psi (1034 kPa)
operating pressure. \[Provide pressure regulating module capable of
regulating outlet pressure between 15 to 25 psi, +/- 5 psi (103 to
172 kPa, +/- 34 kPa) and adjustable screw for setting pressure schrader
valve connection for monitoring pressure.\]

E. Manual Angle Control Valve, Manual Globe Control Valve: Less than 2
1/2 inch (65 mm) MSS SP‑80, type 3, Class 150 \[threaded\] \[soldered\]
ends. \[Angle\] \[globe\] valve 2 1/2 inch (65 mm) and larger MSS SP‑85,
Type II, Class 250 \[threaded\] \[flanged\] ends.

F. Quick Coupling Valves: Two piece unit consisting of a coupler water
seal valve assembly and a removable upper body to allow spring and key
track to be serviced without shutout of main. Provide brass parts.
Provide \[yellow\] \[lavender\] \[vinyl\] \[rubber\] lockable lids with
springs for positive closure on key removal.

G. Hose Bib: One piece consisting of all brass construction with full
flow \[1/2\] \[3/4\] \[1\] inch (\[13\] \[19\] \[25.40\] mm) hose
connection outlet and \[with attached handle\] \[removable key handle\]
with gaskets and washers.

H. Drain Valves:

1\. Manual: MSS SP‑80, Type 3, Class 150 \[threaded\] \[soldered\] ends
for sizes less than 2 1/2 inches (65 mm). MSS SP‑85, Type II, Class 250
\[threaded\] \[flanged\] ends for sizes 2 1/2 inches (65 mm) and larger.

\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*

DELETE AUTOMATIC DRAINS IN WARM CLIMATE AREAS. THIS SAVES WATER BY NOT
DRAINING 2 TO 4 INCH (50 TO 100 MM) DIAMETER LINES DURING IRRIGATION
CYCLES AND AVOIDS CONTINUOUSLY SATURATED SOIL AT DRAIN DISCHARGE POINTS.
AUTOMATIC DRAINS ARE NECESSARY IN COLD CLIMATE AREAS, PREVENTING FREEZE
DAMAGE TO SPRINKLERS AND PIPES THAT ARE ABOVE FROST LINE.

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2\. Automatic: Brass, spring loaded ball drip type, 150 pounds (1034
kPa) and threaded ends, designed to close at 6 foot (1.83 m) pressure
head with positive seal at 3 psi (21 kPa) pressure or greater and be
open to drain at less than 3 psi (21 kPa) pressure.

\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*

BACKFLOW PREVENTION REQUIREMENTS VARY WITH JURISDICTION, AND SHOULD BE
DETERMINED BY CONSULTATION WITH APPROPRIATE AUTHORITIES. REDUCED
PRESSURE PRINCIPLE DEVICES PROVIDE THE GREATEST DEGREE OF PROTECTION OF
THE SOURCE, BUT ALSO ARE MOST EXPENSIVE AND CREATE THE GREATEST PRESSURE
LOSS. THEY MUST BE LOCATED ABOVE GROUND.

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I. Backflow Preventers:

1\. Reduced Pressure Principle Backflow Preventers: AWWA C511. Provide
backflow preventers complete with 150 psi (1034 kPa) rated flanged
\[cast iron\], \[bronze\] \[brass\] mounted \[gate\] \[ball\] valve
\[and strainer\], 304 stainless steel or bronze, internal parts. Total
pressure drop through complete assembly shall be a maximum of 10 psi
(69 kPa) at rated flow.

a\. Piping Assembly: \[Red brass pipe and fittings\] \[Galvanized steel
pipe and fittings\].

b\. Strainers: Bronze or brass construction with gasket caps. Equip
units with No. 200 mesh (75 micrometers) stainless steel screen
elements.

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VACUUM BREAKERS ARE DESIGNED TO PREVENT BACK SIPHONAGE ONLY, AND ARE NOT
EFFECTIVE AGAINST BACKFLOW DUE TO BACK PRESSURE. A VACUUM BREAKER IS
GENERALLY ADEQUATE WHEN IT IS LOCATED ABOVEGROUND HIGHER THAN HIGHEST
IRRIGATION HEAD AND ITS ELEVATION IS ABOVE AREAS WHICH MAY BE FLOODED.

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J. Pressure Type Vacuum Breaker: ASSE 1020 \[bronze\] \[brass\]
construction, with one or two check valves, vacuum relief, inlet and
discharge shut‑offs valves, and field test cocks, and with vacuum relief
opening of greater diameter than unit.

\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*

ATMOSPHERIC VACUUM BREAKERS ARE DESIGNED TO PREVENT BACK SIPHONAGE ONLY,
AND ARE NOT EFFECTIVE AGAINST BACKFLOW DUE TO BACK PRESSURE. A
ATMOSPHERIC VACUUM BREAKER IS GENERALLY ADEQUATE WHEN IT IS LOCATED
ABOVEGROUND HIGHER THAN HIGHEST IRRIGATION HEAD AND ITS ELEVATION IS
ABOVE AREAS WHICH MAY BE FLOODED. LOCATE ATMOSPHERIC VACUUM BREAKER
DOWNSTREAM OF THE CONTROL VALVE.

\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*

K. Atmospheric Vacuum Breaker: AWWA M14, vacuum relief, inlet and
discharge openings, and with vacuum relief opening of greater diameter
than unit.

2.4 ACCESSORIES AND APPURTENANCES

A. Tapping Tee: Bronze flat, double strap, with neoprene gasket or
\"O\"‑ring seal.

B. Water Meter: Meter to include roll sealed register, magnetic drive,
straight reading (digits shall indicate in gallons (liters), large
numerals, glass lens for legibility,) low flow indicator to detect
leaks, tamper proof seal pin to detect theft; sturdy durable, corrosion
resistant main case, electrical grounding continuity; disc measuring
chamber with minimum head loss.

C. Drip Head Accessories:

1\. Strainer: Provide strainer at inlet to each drip control valve
assembly. Provide polyester fabric screen attached to a PVC frame having
the equivalent of \[150\] \[200\] mesh (\[56\] \[75\] micrometers)
filtration capacity. Compact \"Y\" body and cap configuration.
Incorporate flush valves within strainer to clean screen without
disassembling unit.

2\. Riser Adapters: PVC material, \[threaded\] \[barbed\] \[soldered\]
to attached drip heads to tubing, pop‑up irrigation body, or rigid
piping and tubing to rigid piping.

3\. Tubing Stakes: Plastic, plastic coated steel, or other non‑corrosive
strong material to secure tubing.

4\. Bug Cap: Provide check valves at end of each emitter outlet
distribution line. Valves shall permit free flow of water with minimum
restriction; prevent back siphoning, entry of insects, and contamination
into outlet ports.

5\. Sub Terranean Drip Box and Cover: Construct of ultra‑violet
resistant PVC. Two slots in bottom of box to allow for installation of
distribution tubing onto the emission device.

6\. Line Flushing Valve: Construct of PVC with maximum flow rate of
15 gpm (0.95 L/s) with minimum flushing water volume of one gallon
(3.79 liters) at a minimum 4 psi (28 kPa) to a maximum 25 psi (172 kPa)
at a point of discharge.

7\. Valve Boxes: \[Cast‑iron\] \[precast concrete\] \[plastic\] valve
box for each isolation valve, control valve, \[quick coupling valve\]
\[and\] \[drain valve\]. Provide box sizes that are suitable and
adjustable for valve used.

a\. Cast the word \"IRRIGATION\" on cover.

b\. Stencil, engrave, or brand controller and valve sequence on remote
control valve cover. Letters minimum 10 mm (4 inches) height.

D. Backflow Preventer Accessories:

1\. Pressure Gages: ANSI/ASME B40.1, single style pressure gage for
water with 4 1/2 inch (113 mm) dial, brass or aluminum case, bronze
tube, gage cock, pressure snubber, and siphon. Provide scale range
suitable for irrigation systems.

2\. Water Hammer Arresters: ASSE 1010; stainless steel construction with
an encased and sealed bellows compression chamber.

3\. Backflow Preventer Enclosure: Frame to be constructed of 3/16 inch
(4.76 mm) \[stainless steel\] \[steel\] angle iron with 1 1/2 inch
(38.10 mm) No. 9 expanded metal covering. Construct in a \[one piece
single swing\] \[two piece double\] hinge configuration. Provisions for
pad locking and lighting handles. Size to fit backflow assembly to
installed. \[Color to be \[green\].\] Lock for enclosure provided by
others.

4\. Concrete Pads: Cast‑in‑place reinforced concrete construction for
reduced pressure type backflow preventers.

E. Moisture Sensing Device:

1\. Automatic Rain Shut‑Off Device: One piece, maintenance and
adjustment free, reacts to a minimum 1/8 inch (3.18 mm) of rain water,
unaffected by humidity levels, commercial grade materials, no exposed
mechanical switch or electrodes, solid state construction with internal
relay operating voltage of 24 to 30 VAC, static charge pretested,
maximum switch current of one amp.

2\. Automatic Freeze Shut‑Off Device: Construct of a PVC cylinder with a
sensing element mounted at top of cylinder capable of interrupting the
control valve common wire as temperatures approach 32 degrees F
(0 degrees C). Operating voltage 24 VAC, maximum current one amp. Static
charge protection with snubber network.

3\. Soil Moisture Sensor Device: 24 VAC, field adjustable and capable of
interrupting irrigation cycles for pre‑determined moisture level at
moisture probe location. Waterproof field adjustment module with bypass
switch.

F. Air/Vacuum Relief: Construct of PVC with a maximum operating pressure
of 140 psi (965 kPa).

\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*

A FLOW METER IS DESIRABLE FOR SYSTEM OPERATION AND MAINTENANCE, AND MAY
BE REQUIRED AND/OR PROVIDED BY THE WATER UTILITY COMPANY. THE FOLLOWING
PARAGRAPH IS FOR AN INEXPENSIVE METER INTENDED FOR THE OWNERS USE ONLY,
AND SHOULD BE MODIFIED FOR SPECIFIC UTILITY COMPANY REQUIREMENTS.

\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*

G. \[Flow Meter: \[one\] \[1.25\] \[1.5\] \[2\] \[3\]- inch (\[25.40\]
\[31\] \[38\] \[50\] \[75\] mm) flow meter with a minimum \[\_\_\_\] gpm
(\[\_\_\_\] L/s), female national pipe threaded ends and replaceable
metering insert. Meter shall register flow between \[[ ]{.underline}\]
and \[[ ]{.underline}\] gpm (\[[ ]{.underline}\] and \[[
]{.underline}\]L/s) with at least 95 percent accuracy. Nine (9) volt
direct current output with a pulse rate which is proportional to the
flow rate, a 0.067 ampere fuse link to protect metering insert and
14 gage output feeder wire to be powered by the controller. Provide
\[brass\] \[plastic\] meter housing suitable for service at 150 psi
(1034 kPa) operating pressure.\]

H. Automatic Controller \[Electrical\] \[Solar\] \[Battery\]:
Controller, NEMA ICS 2 with \[120‑volt single phase service\] \[24 VAC
solar\] \[24 VDC solar\] \[24 VDC battery\], operating with indicated
station, and grounded chassis. \[Provide enclosure NEMA ICS 6 Type 3R\],
with locking hinge cover, \[wall mounted\] \[pedestal mounted\]. The
controller shall have the following features:

1\. \[\_\_\_\]‑station controller with \[\_\_\_\] independent programs
that can run concurrently.

2\. Allows an infinite number of cycles per day by placing the program
in a looping mode.

3\. Ability to be programmed in one second increments, from one second
to 24 minutes.

4\. A water budgeting capability in all stations within a program in one
percent increments from one percent to 255 percent.

5\. A programmable watering calendar ranging from one to 16 days.

6\. A single‑station timed manual feature that allows a station to be
turned on manually for its programmed watering time.

7\. A semi‑automatic manual cycle feature.

8\. A true manual operation with safety shut‑off at midnight and
indicate which station is on by means of L.E.D.S.

9\. UL listed, having a re‑settable circuit breaker, cadmium plated,
weatherproof steel case, and keyed lock.

2.5 ELECTRICAL CIRCUITS

A. Controls: Provide one control circuit for each zone and a circuit to
control the pump through the sprinkler cycle.

B. Control Wiring for Electrically Operated Valves: NFPA 70, copper
conductor 14 gage (1.8 mm) wire, Type UF.

C. Conduit: UL 651, rigid polyvinyl chloride conduit, Schedule 40.

2.6 CONCRETE MATERIALS

A. Requirements: 2500 psi (20 MPa) compressive concrete strength at
28 days \[as specified under Section 03306, Minor Concrete\].

[PART 3: EXECUTION]{.underline}

3.1 INSTALLATION

A. Preparation: Clearing, grubbing, and grading shall be according to
their respective specification sections. Install sprinkler system after
site grading has been completed.

B. Trenching: Hand trench around roots to pipe grade when roots of
2 inches (50 mm) diameter or greater are encountered. Make width of
trench 4 inches (100 mm) minimum or 1 1/2 times diameter of pipe,
whichever is wider. Backfill and hand tamp over excavation. When rock is
encountered, excavate 4 inches (100 mm) deeper and backfill with silty
sand (SM) or well‑graded sand (SW) to pipe grade. Keep trenches free of
obstructions and debris that would damage pipe. Do not mix subsoil with
topsoil. Bore under existing concrete walks, drives and other obstacles
at a depth conforming to bottom of adjacent trenches. Install pipe
sleeve, two pipe diameters larger than sprinkler pipe, to fill bore.
\[Rock will be encountered. Excavate 4 inches (100 mm) deeper and
backfill with silty sand (SM) or well graded sand (SW) to pipe grade.\]
Prior to backfilling of trench, Contracting Officer shall verify and
approve location of all irrigation heads.

C. Piping System Interfacing With Other Work:

1\. Minimum horizontal clearances between lines: 4 inches for 2 inch
(100 mm for 50 mm) pipe and less; 12 inches for 2 inch (300 mm for
50 mm) pipe and more.

2\. Minimum vertical clearances between lines: One inch (25 mm).

3\. Minimum Pitch Down: 6 inches per 100 feet (150 mm per 30 m) in
direction of drain valves.

4\. Thrust Blocks: Install thrust blocks at bends, tees, plugs and
valves or 2 1/2 inches (63 mm) and larger mainline piping. Place
concrete so that sides subject to thrust or load are against undisturbed
earth, and valves and fittings are serviceable after concrete has set.

5\. Minimum Backfill Cover:

a\. 18 inches (450 mm) for pressure mainline pipe and valve control
wire.

b\. 12 inches (300 mm) for non‑pressure lateral pipe.

c\. 24 inches (600 mm) for all piping under paved or non‑paved
pedestrian paths.

d\. 36 inches (900 mm) for all piping under traffic loads, \[farm
operations\], \[freezing temperatures\].

e\. Install pipe sleeves at depths of 24 and 36 inches (600 and 900 mm).
\[Rock will be encountered. Provide minimum 4 inches (100 mm) of silty
sand (SM) or well graded sand (SW) cover on top of all piping.\] Fill
remainder of trench or pipe cover to within 3 inches (75 mm) of top with
excavated soil, and compact soil with plate hand‑held compactors to same
density as undisturbed adjacent soil.

f\. Drain Pockets: Excavate to sizes shown. Backfill with gravel to 12
inches below grade. Cover gravel with geotextile. Backfill remainder
with excavated material and 6 inches of topsoil.

6\. Restoration: Fill top 3 inches (75 mm) with topsoil and compact with
same density as surrounding soil. Restore \[turf\] and \[plants\]
according to Section 02930 - Exterior Plants. Restore pavements.

D. Polyvinyl Chloride (PVC) Pipe: ASTM D 2774 or ASTM D 2855, and pipe
manufacturer\'s instructions. Install pipe in a serpentine (snaked)
manner to allow for expansion and contraction in trench before
backfilling. Install pipes at temperatures over 40 degrees F
(4.5 degrees C ).

1\. Solvent‑Cemented Joints: ASTM D 2855.

2\. Threaded Joints: PPI TN8/8; full cut with a maximum of three threads
remain exposed on pipe and nipples. Make threaded joints tight without
recourse to wicks or fillers, other than polytetrafluoroethylene thread
tape.

E. Polyethylene (PE) Pipe and Drip Tubing: Bury drip tubing and PE pipe
12 inches (300 mm) deep. \[Solvent weld\] \[compression connection\]
\[barbed connection\] in accordance with manufacturers recommendation.
Install hose in serpentine manner. When cutting hose, use a shearing
tool such as a pipe cutter, knife or shears. Use only manufacturer\'s
recommended tool and procedure when installing drip heads.

F. Soldered Copper Tubing: Ream pipe and remove burrs. Clean and polish
contact surfaces of joint. Flux both male and female ends. Insert end of
tube into fittings full depth of socket. After soldering, a solder bead
shall show continuously around entire joint circumference. Remove excess
acid flux from tubings and fittings.

G. Threaded Brass or Galvanized Steel Pipe: Prior to installation ream
pipe. Cut threads as specified in ANSI/ASME B1.2. Make joints with pipe
joint compound applied to male end only.

H. Dielectric Protection: Where pipes of dissimilar metal are joined,
make connection with dielectric fitting.

I. Fixed Riser Irrigation Heads: \[Fixed risers allowed in planter beds
only.\] Nozzle mounted on fixed riser minimum 6 inches (150 mm) above
grade in mulched planter beds, 12 inches (300 mm) above grade in planter
beds with groundcover. Provide swing joint assembly attachment between
lateral lines and fixed risers.

J. Pop‑Up Irrigation Head: \[Pop‑ups required along all pedestrian and
vehicular and turf edges. Pop‑ups required in all turf areas. Install
plumb and level with terrain. Provide swing joint assembly attachment
between lateral line and pop‑up body. Top of irrigation head shall be
flush wit surrounding finish grade. \[In recreational fields, install
all pop‑up rotors with stainless steel risers 5 inches (125 mm ) below
finish grade per manufacturer\'s recommendations.\]

K. Drip Heads: Install drip heads \[in plastic drip box\]. Connect drip
head to a \[rigid PVC nipple\] \[drip head stake\] \[directly to
tubing\]. Attach tubing to barbed fitting and daylight distribution
tubing at rootball secured with stake. Add bug cap at end of secured
distribution tubing. After installing drip heads and before operating
system, open end of drop lateral and flush lines clean. The number of
drip heads on a line shall not exceed manufacturer\'s recommendations
for that hose or distribution tubing size and length.

L. Isolation, Control and Quick Coupling Valves: Install plumb in a
valve box extending from grade to below valve body, with a minimum of
4 inches (100 mm) cover measured from finish grade to top of valve stem.
Install automatic valves beside sprinkler heads with a valve box.
Install 2 inches (50 mm) above finish grade in planter bed, level with
finish grade in turf areas.

1\. Hose Bibb: Install \[above grade\] \[below grade in valve box\] with
support.

M. Drain Valves: Entire system shall be manually or automatically
drainable. Equip low point of each underground line with drain valve
draining into an excavation containing gravel. Cover gravel with
building paper. Backfill with excavated material and 6 inches (150 mm)
of topsoil.

N. Backflow Preventers: Flush pipe lines prior to installing device.
Install in new connection to existing water distribution system, between
connection and control valves. Install with concrete pads. \[Install
with concrete pads in turf only.\] Do not install device in pits or
where any part of the device could become submerged in standing water.
Install device a minimum of 12 inches (300 mm) from trees, walls,
fences, structures and other obstructions.

1\. Reduced Pressure Principle Backflow Preventer: Protect device by a
strainer located upstream. Install device a minimum of 12 inches
(300 mm) between finish grade and bottom of relief port. Where freezing
conditions occur, locate device inside a building and pipe the relief
valve port through an air gap to a drain. Install water meter above
grade, upstream of unit of unit as a part of assembly. Provide
galvanized steel support with concrete footing.

\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*

INSTALL DEVICE IN AN ACCESSIBLE LOCATION TO FACILITATE INSPECTION AND
SERVICING. THE DEVICE CAN BE INSTALLED ON A MAIN LINE TO IRRIGATION
SYSTEM UPSTREAM OF SHUT‑OFF VALVES (VALVES MAY BE LOCATED DOWNSTREAM
FROM DEVICE).

\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*

2\. Pressure Vacuum Breaker: Install device a minimum of 12 inches (300
mm) above highest irrigation head and bottom of air relief valve. Where
freezing conditions occur, locate device inside a building and pipe the
relief valve port through an air gap to a drain.

3\. Atmospheric Vacuum Breaker: Install device minimum of 12 inches (300
mm) above highest irrigation head and bottom of relief valve located
downstream of irrigation control valve.

O. Water Meter: Install meter upstream of backflow preventer per
manufacturer\'s recommendations \[and local Utility Department
Instructions\]. \[Plumb meter in a valve box extending from grade to
below meter body, with a minimum of 4 inch (100 mm) cover measured from
top of grade to top of meter.\]

\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*

TAPPING OF WATER LINE OWNED BY A UTILITY COMPANY IS OFTEN DONE BY THE
UTILITY COMPANY. IN THIS CASE, THE FOLLOWING PARAGRAPH SHOULD BE DELETED
AND A CUSTOM WRITTEN PARAGRAPH DESCRIBING THE CONTRACTOR'S CONNECTION
SHOULD BE SUBSTITUTED.

\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*

P. Connection To Existing Water Supply System: Use tapping or drilling
machine valve and mechanical joint type sleeves for connections to be
made under pressure. Bolt sleeves around mains; bolt valve conforming to
AWWA C500 to the branch. Open valve, attach drilling machine, make tap,
close valve, and remove drilling machine, without interruption of
service. Notify Contracting Officer in writing at least 15 days prior to
the date the connections are required; receive approval before any
service is interrupted. Provide materials required to make connections
into the existing water supply systems and perform excavating,
backfilling, and other incidental labor as required. furnish the labor
and the tapping or drilling machine for making the actual connections to
the existing systems.

Q. Valve Boxes and Lids: Install with one cu ft (0.0283 cubic meters)
pea gravel sump below valve. Support valve box with \[brick\] \[concrete
block\]. \[Provide wire screen between gravel sump and bottom of valve
body for rodent protection.\] For turf areas, install flush with finish
grade. For planter beds, install 2 inches (50 mm) above finish grade.
For sloped conditions, install valve box level with terrain.

R. Backflow Preventer Enclosure: Install with concrete pad. Place hinges
so direction of swing will not conflict with other site features.

S. Rain \[and\] \[Freeze\] Shut‑Off Device\[s\]: Install as per
manufacturer\'s recommendations. For wall mounted controllers, attach
device\[s\] to side of building or eave, minimum 8 feet (2400 mm) above
finish grade and a minimum of 12 inches (300 mm) from building wall or
eave. For pedestal mounted controllers, mount \[to side of controller
housing\] \[on top of minimum 42 inches (1050 mm) high pole outside of
irrigation coverage in vandal‑resistant enclosure.

T. Soil Moisture Sensing Device: Bury the device at depth per
manufacturer\'s recommendation in the effective root zone of hydrozone
to be monitored. Place a sensor‑protection \[plate\] \[indicator\]
\[valve box with cover\] above the device. Provide waterproof connection
to all field splices in valve boxes.

\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*

PROVIDE AIR RELIEF/VACUUM VALVE AT HIGHEST POINT OF ALL PRESSURIZED
MAINS. FOR DRIP SYSTEMS, LOCATE AT HIGHEST POINT ON DRIP LATERAL.

\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*

U. Air/Vacuum Relief Valve: Locate at highest point in all mains.

V. Electrical Circuits: Bury wires beside mainline pipe in same trench.
Provide grey electrical conduit where wires run under paved or non‑paved
pedestrian paths and vehicular roads. Tag wires at controller and
control valve location with plastic tie wrapped tags. Provide one
control wire to each control valve location and one common wire looped
from controller to each control valve. Provide one separate control
valve wire of a different color from controller to each control valve
cluster.

1\. Loops: Provide a 12 inch (300 mm) loop of wire at each valve where
controls are connected.

2\. Expansion and Contraction: Bundle multiple tubes or wires and tape
together at \[10\] \[20\] foot (\[3\] \[6\] m) intervals with 12 inch
(300 mm) loop for expansion and contraction.

3\. Splices: Make electrical splices waterproof. Locate all field
electrical splices in valve boxes.

W. Automatic Controller: Determine exact location of controllers in
field before installation. Coordinate the electrical service to these
locations. Install in accordance with manufacturer\'s recommendations
and NFPA 70.

X. Warning Tape: Shall be according to Section 02501 - Utility Line
Marking.

3.2 FIELD QUALITY CONTROL

\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*

DETERMINE WHETHER THE GOVERNMENT OR THE CONTRACTOR IS GOING TO PERFORM
THE REQUIRED TESTING AND EDIT ACCORDINGLY.

\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*

A. Testing: \[The Government will perform the required testing,
recording, and distributing of the results.\] \[The Government will make
arrangements for a certified independent testing laboratory to perform
the required testing, recording, and distributing of the results.\]
\[The Contractor shall conduct the performance and acceptance tests of
the \[\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\] The Contractor shall
furnish necessary equipment, labor, and materials to conduct the
testing. Testing shall be conducted in the presence of the Contracting
Officer.\] \[The Contractor shall make arrangements for a certified
independent testing laboratory, according to the requirements of Section
01458 - Testing Laboratory Services, to perform the required testing,
recording, and distributing of the results.\]

B. Leakage Test: Prior to backfilling, the Contractor shall test the
system for leakage \[at main piping\] \[for whole system\]. Maintain a
hydrostatic pressure of 150 psi (1034 kPa) without pumping for a period
of one hour with an allowable pressure drop of 5 psi (35 kPa) before
backfilling system. Correct leaks. Make necessary corrections to stop
leakage. Retest system twice until pressure can be maintained for
duration of test.

C. Operations Test:

1\. At the conclusion of the pressure test, install sprinkler heads,
quick coupling assemblies, and hose valves, and test entire system for
operation under normal operating pressure.

2\. Test is acceptable when system operates through at least one
complete cycle, with uniform coverage of areas to be sprinkled, and
automatic controls function properly.

3.3 ADJUSTMENT

A. Piping and Heads: After grading, plant installation, and rolling of
planted areas, adjust sprinkler heads flush with finished grade. Make
adjustments by providing new nipples of proper length or by use of heads
having an approved device, integral with head, which will permit
adjustment in height of head without changing piping.

B. Finish-Grade Adjustment: After grading, seeding, and rolling of grass
areas, the Contractor shall adjust the sprinkler heads to be flush with
the finished grade or not more than 1/2 inch above same. The adjustment
shall be made by providing new nipples of proper length or by the use of
heads having an approved device, which will permit adjustment in height
of head without changing piping.

3.4 CLEANING

A. Flushing: After piping, risers, and valves are in place and
connected, but prior to installation of sprinkler heads and valves,
flush piping system under a full head of water. Maintain flushing for 3
minutes.

\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*

DISINFECTION OF A SYSTEM DOWNSTREAM FROM A BACKFLOW PREVENTER IS NOT
NECESSARY.

\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*

B. Disinfection and Sterilization: \[Shall be according to Section 02512
‑ Disinfection of Water Distribution.\] Sprinkler system fed from a
potable water system shall be sterilized upstream of backflow preventer
in accordance with AWWA C651. Sterilize new waterlines for a minimum of
24‑hours, to meet \[local\], \[state\], \[federal\], health test
requirements before placing in service. Minimum retention period shall
be 3 hours.

3.5 TRAINING OF GOVERNMENT PERSONNEL

A. Requirements: Instruct Government personnel in operation and
maintenance of the system, including adjusting of sprinkler heads
according to Section 01780 - Closeout Submittals. Use operation and
maintenance material as basis for training.

[PART 4: MEASUREMENT AND PAYMENT]{.underline}

\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*

WHEN A \"LUMP SUM\" CONTRACT IS USED, DELETE THE TITLE PART 4:
MEASUREMENT AND PAYMENT, AND BOTH ARTICLES FROM THIS SECTION.
MEASUREMENT AND PAYMENT WILL BE ADDRESSED IN PART 4 OF SECTION 01009 OR
SECTION 01010.

WHEN NOT A \"LUMP SUM\" CONTRACT, SELECT APPLICABLE PHRASES; USE THE
\"NO MEASUREMENT\" PHRASE WHEN NONE OF THE PAY ITEMS IN THIS SECTION ARE
INCLUDED IN THE BID SCHEDULE.

\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*

4.1 METHOD OF MEASUREMENT

A. Units: The work described in this section will \[not be measured for
payment.\] \[be measured and paid for\] \[on a lump sum basis.\] \[by
the number of linear feet of pipeline measured along the centerline and
on the ground surface over the completed types, sizes and pressure
ratings.\] \[Water for testing will not be measured for payment.\]
\[Thrust blocks will be measured and paid for by the number of cubic
yards of concrete used in the construction of the blocks.\]

4.2 BASIS OF PAYMENT

\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*

WHEN NOT A \"LUMP SUM\" CONTRACT, SELECT APPLICABLE PHRASES; USE THE
\"NO DIRECT PAYMENT\" PHRASE WHEN NONE OF THE PAY ITEMS IN THIS SECTION
ARE INCLUDED IN THE BID SCHEDULE.

WHEN NOT A \"LUMP SUM\" CONTRACT AND PAYMENT IS TO BE MADE UNDER THIS
SECTION, SELECT APPLICABLE PAY ITEMS. DO NOT CHANGE PAY ITEM NUMBER.

\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*

A. Payment: \[No direct payment for the work described under this
section will be made. Consideration for this item shall be included in
the bid price for other items of the Contract.\] \[Prices and payment
will be full compensation for the work described in this section.
Payment will be made under:\]

[Pay Item]{.underline} [Pay Unit]{.underline}

02814(01) Sprinkler System Lump Sum

02814(10) PVC Plastic Pipe, \_\_\_\_ Inch Dia Linear Meter (Foot)

02814(11) ABS Plastic Pipe, \_\_\_\_ Inch Dia Linear Meter (Foot)

02814(20) Rotary Type Sprinkler Head Each

02814(21) Spray Type Sprinkler Head Each

02814(22) Emitter Each

02814(23) Bubbler Each

02814(30) Backflow Preventer Each

02814(40) Valve Box and Cover Each

02814(41) Drain Valve Each

02814(42) Hydraulic Valve Each

02814(43) Electric Solenoid Valve Each

02814(44) Thermal Hydraulic Valve Each

02814(50) Controller Each

02814(60) Thrust Blocks, Concrete Cubic Meter (Yard)

END OF SECTION

02814

WORK DATA SHEET

for

SECTION 02814 ‑ LANDSCAPE IRRIGATION

\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*

EDIT ACCORDING TO PROJECT REQUIREMENTS.

\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*

Spray Head Types and Conditions:

1\. Perimeter of Grassed Areas: Pop‑up half circle heads.

2\. Corners of Grassed Areas: Pop‑up quarter circle heads.

3\. Within Grassed Areas: Pop‑up full circle heads.

4\. Planters: Fixed square pattern head, and one emitter per 4 ft^2^ of
planter area.

5\. Trees: Drip irrigation emitters with adjustable flow.

Note: When several irrigation projects are included, the tabular format
may be more appropriate. (07/10/90)