HomeMy WebLinkAbout3734-8Irrigation Specifications
Contractor must install irrigation and planting in accordance with the City of Fontana Landscape specification Manual.
Part I - General
1.01 Scope of Work
All work shall be performed by a contractor with a C-27 license or greater. The work required is indicated on
the drawings and includes, but is not limited to new irrigation systems in medians and retrofitted irrigation
systems on each side of roadway, automatic controller, remote control valves, quick coupler valves, water
connections, and electric connections.
1.02 City Inspections and Tests
A. It is the landscape contractors responsibility to contact the Engineering Division Landscape Inspector, 48
hours prior to desired inspection of an item at extension (909) 350-6653.
B. Prior to release of utilities or maintenance period commencement, the following inspections are required:
Construction of irrigation system in open trench condition (prior to backfill). Pressure test 150 PSI for
- a three (3) hour continuous period.
- An irrigation coverage test.
Planting, including street trees. Contact the Parks Planning and Landscape Development Section,
Engineering Division for species and locations.
- Finish grade prior to seeding.
- Compliance with approved landscape plans.
- Any special conditions of approval attached to project.
- Final inspection.
C. The owner's representative and landscape contractor shall be present at this inspection.
1.03 Maintenance Guidelines
A. Landscape shall be maintained in a neat, clean, weed -free and healthy condition. This shall include but
not limited to:
- Cultivation of planted beds at intervals not to exceed 10 days.
- Regular mowing to maintain a lawn height not to exceed 2" (may vary per species).
- Regular pruning of plants as necessary to control and direct growth.
- Scheduled maintenance of irrigation controller to assure proper application rate of water necessary for
proper plant growth. Drip irrigation may require specialized landscape maintenance care.
- Immediate replacement of plant material as needed due to death, disease, or lack of growth.
- Fertilization on a regular schedule as recommended.
1.04 Turnover Irrigation Items
A. Controller charts:
- Provide one controller chart (of the maximum size the inside of the controller door will allow) for each
automatic controller. The chart shall diagram the area covered by the controller and shall be prepared
from record drawings.
B. Operation and maintenance manuals:
Two individually bound copies of operation and maintenance manuals shall be delivered to the City.
C. Supply as part of this contract the following items:
- Two keys for each automatic irrigation controller.
- One valve box cover wrench.
D. Materials list:
1) Complete material list shall be submitted to the City's on-site Construction Manager prior to
performing any work. Catalog data and full descriptive literature must be submitted whenever the use
of items different than those specified is requested.
2) Material list shall be submitted using the following example:
Item Description Manufacturer Model __
1 Pressure supply lines Lasco Schedule 40
2 Lawn spray head Toro 570 -GP
E. Record drawings for new systems- Contractor shall provide completed as -built drawings which shall be
mylar copies of the project plans and shall conform to the following:
1) Record accurately on one set of contract drawings all changes in the work constituting departures
from the original contract drawings.
2) The changes and dimensions shall be recorded in a legible and workmanlike manner to the satisfaction
of the Inspectors. Prior to final inspection of work, submit record drawings to Inspectors for approval.
3) Dimensions from two permanent points of reference (walls, sidewalks,curbs, etc.). Data shown on
record drawings shall be recorded day to day as the project is being installed. All lettering on
drawings shall be a minimum of 'a" in size.
4) Show locations and depths of the following items for new systems:
- Point of connection for water and electrical service.
- Routing of sprinkler pressure lines. Dimension maximum 100 feet along routing,.
- Gate valves.
- Sprinkler control valves.
- Quick coupling valves.
- Routing of control wires.
- Electrical service lines.
- Sprinkler heads.
- Lateral lines.
- Related equipment (as may be directed).
5) Maintain record drawings on site at all times.
1.05 Guarantee
A. The entire sprinkler system, including all work done under this contract, shall be guaranteed by the
contractor against all defects, fault of material, and workmanship, for one year from the date of final
inspection.
B. The contractor shall instruct the City's representative in the operation and maintenance of the system and
shall furnish a complete set of operating instructions.
Part II - Materials
2.01 General
Materials and equipment installed or furnished that do not meet these standards will be rejected and shall be
removed from the site at no expense to the City.
2.02 Galvanized Steel Pipe and Fittings (if applicable)
A. All galvanized steel pipe shall be Schedule 40, threaded, coupled, and hot -dipped galvanized, and shall
comply with the requirements of ASTM A120-66 or ASTM A53-67.
B. All fittings for galvanized steel pipe shall be 150 pound rated galvanized malleable iron, banded pattern.
C. Pipe sizes indicated on the drawings are nominal inside diameter, unless otherwise noted.
2.03 Brass Pipe and Fittings (if applicable)
A. All brass pipes and fittings to be IPS standard weight,125 UBS, 85% red brass, and are to be used as
standpipes on backflow preventer.
B. Where galvanized risers and/or fittings are required, a dielectric union shall be installed at connection
point of galvanized and bronze material.
2.04 Plastic Pipe and Fittings
A. All plastic pipe shall bear the following markings: manufacturer's name, nominal pipe size, schedule or
class, type of material, pressure rating in PSI, NSF seal of approval, and the date of extrusion.
B. Pressure supply lines 112' or smaller in diameter located downstream from the backflow prevention device
shall be Schedule 40 PVC. Pressure supply lines 2" or larger shall be either Class 315 solvent weld PVC
or Class 200 rubber gasket type PVC. Solvent weld and ring type pipe shall not be used together on the
same pressurized line.
C. Non -pressure lines shall be Class 200 PVC.
D. All fittings shall be standard weight Schedule 40 and shall be injection molded of an improved PVC fitting
compound. Threaded plastic fittings shall be injection molded.
E. All threaded nipples shall be standard weight Schedule 80 with molded threads unless otherwise specified.
F. All solvent cementing of plastic pipe and fittings shall be a two-step process, using primer and solvent
cement applied per manufacturer's specifications. Cement shall be of a fluid consistency,not gel -like or
ropy. Primer and solvent shall be applied to both mating surfaces.
2.05 Backflow Prevention Devices
Backflow preventer shall be as shown on drawings.
2.06 Valves
A. Gate valves:
1) Gate valves 2" or smaller shall have screwed joints and brass bodies.
2) All gate valves shall have a maximum working pressure of no less than 150 PSI and shall conform to
AWWA.
B. Remote control valves:
Valves shall be as shown on the drawings. Connect to the controller in the operating sequence indicated
on the drawings.
2.07 Valve boxes
A. Valve boxes shall be fabricated from a durable, weather resistant plastic material, resistant to sunlight and
chemical actions of soil.
B. The valve box cover shall be secured with a hidden latch mechanism or bolts.
C. The cover and box shall be capable of sustaining a load of 1,500 pounds.
D. Valve box extensions shall be by the same manufacturer as the valve box.
E. Gate valve boxes shall be round plastic boxes with bolt -down covers marked "GATE VALVE".
F. Remote control valve boxes shall be rectangular plastic boxes with bolt -down covers marked with the
valve identification numbers stenciled in 2" high letters/ numbers using epoxy resin base paint of a
contrasting color.
2.08 Automatic controller
Automatic controllers shall be as indicated on the drawings complete with hookup to electrical sources. All
controllers shall be enclosed in a vandal -resistant, waterproof enclosure, LeMeur or approved equal, oras
shown on the drawings. All wiring from electrical meter to pedestal mount controller to be underground and
sleeved through concrete pads.
2.09 Electrical -primary
A. All electrical equipment shall be NEMA Type 3, waterproofed for exterior installations.
B. All electrical work shall conform to local codes and ordinances. Above ground wires shall be conduit
enclosed.
2.10 Wiring- Low Voltage
A. Remote control wire shall be direct burial AWG -UF type, 14 gauge as per manufacturer's specifications.
B. Connections shall be either epoxy -sealed packet type or Scotch Lock connectors.
C. Ground wires shall be white in color. Control wires shall be of same color for a given controller. Where
more than one controller occupies a single trench, each controller shall have different color control wires.
2.11 Sprinkler heads
Sprinkler heads shall be as indicated on the drawings. Anti -drain valves shall be installed as required for
elimination of low head drainage.
2.12 Irrigation sleeves
Irrigation sleeves shall be Schedule 40 PVC. Size shall be twice the diameter of the size of pipe, electrical
wiring and pipes to be sleeved separately. Sleeving is required under all paved surfaces.
2.13 Water saving system
The water saving system shall be as indicated on the drawings. It shall consist of one main component: the
rain collection unit.
Part III - Execution
3.01 General Installation
A. Water supply:
Connections to proposed water meter (meter installation by others) shall be at the location shown on the
drawings. Minor changes caused by actual site conditions shall be made at no additional cost to the city.
B. Layout:
Layout irrigation systems and makeminor adjustmentsrequited due
between site and
drawings. Where piping is shown on drawings under paved areas, but running parallel and adjacent to
planted areas, install the piping in the planted areas.
C. Diagrammatic intent:
The drawings are essentially diagrammatic. The size and location of equipment and fixtures are drawn to
scale where possible. Provide offsets in piping and changes in equipment locations as necessary to
conform with structures and to avoid obstructions or conflicts with other work.
D. Grades:
Before starting work, carefully check all grades to determine that work may safely proceed, keeping within
the specified material depths with respect to finish grade.
E. Inspection:
Before starting work, carefully check all grades to determine that work may safely proceed, keeping within
the specified material depths with respect to finish grade.
1) Prior to all work of this section, carefully inspect the installed work of all other trades and verify that all
such work is complete to the point where this installation may properly commence without conflicts.
2) Verify that the irrigation system may be installed in strict accordance with all pertinent codes and
regulations, the original design, the referenced standards, and the various manufacturer's
recommendations.
3) Verify pressure in pounds per square inch (PSI) prior to any work. Contact Landscape Architect if
pressure varies from that indicated on plans.
F. Discrepancies:
Do not proceed with installation in areas of discrepancy until all discrepancies have been resolved.
G. Field Measurements:
Make all necessary measurements in the field to ensure precise fit of items in accordance with the
original design.
3.02 Trenching
A. Contractor shall notify UNDERGROUND SERVICE ALERT (800) 422-4133 at least two working days before
beginning to dig.
B. Dig trenches and support pipe continuously on bottom of ditch. Lay pipe to an even grade. Trenching
excavation shall follow layout indicated on drawings to the depths below finished grade and as noted.
C. Tree roots shall be protected. Cut no roots over'2" diameter. Reroute pipe above or below all roots.
Preservation of all roots to take precedence over pipe depth requirement. All trenching to maximize
distance from existing mature trees. Hand digging is required where trenching might impact existing tree
roots.
D. Provide minimum cover of 30 inches over pressure supply lines under paved areas.
E. Provide minimum cover of 18 inches over pressure supply lines 212" in diameter or smaller.
F. Provide minimum cover of 18 inches over control wires.
G. Provide minimum cover of 12 inches over non -pressure lines.
3.03 Backfilling
A. initial backfill on all lines shall be of fine granular material with no foreign matter larger than'2 " in size, 6"
above pipe.
B. Backfill shall be tamped in 4" layers under the pipe and uniformly on both sides for the full width of the
trench and the full length of the pipe. Materials shall be sufficiently damp to permit thorough compaction,
free of voids. Backfill shall be compacted to dry density equal to adjacent undisturbed soil and shall
conform to adjacent grades.
C. Flooding in lieu of tamping is not allowed without specific prior approval.
D. Under no circumstances shall truck wheels be used to compact soil.
E. Provide sand backfill a minimum of 6" over and under all piping routed under paving areas.
3.04 Piping
A. Piping under existing concrete pavement must be installed in sleeves 2'z times the outer diameter of the
pipe which is being sleeved. No hydraulic driving is permitted under any concrete pavement.
B. Cutting or breaking of existing pavement is not permitted without written permission from the owner.
C. Install pipe with all marking up for visual inspection and verification.
D. Remove all dented and damaged pipe sections.
E. Contractor shall install concrete thrust blocking at all changes of direction and terminal points of pressure
pipe.
F. All lines shall have a minimum clearance of 4 inches from each other and 6 inches from lines of other
trades.
G. Parallel lines shall not be installed directly over one another.
H. Make all joints in strict accordance with the manufacturer's recommended methods; allow solvent welds
at least 15 minutes setup time before moving or handling and 24 hours curing time before filling.
I. All threaded plastic -to -plastic connections shall be assembled using Teflon tape.
J. .For plastic -to -metal connections, use non -hardening pipe dope on all threaded plastic -to -metal
connections, except where noted otherwise.
K. Piping shall be snaked from side to side in trench bottom to allow for expansion and contraction
3.05 Assemblies
A. Install all assemblies specified herein according to the respective detail drawings or specifications, using
best standard practice.
B. Install backflow assemblies in shrub areas and/ or adjacent to other hardscape items rather than turf
areas, when possible, and at height required by local codes.
C Valves shall beins installed in shrubareaswh
whenever possible.
D. Each valve box shall be installed on a foundation of pea gravel, backfill one cubic foot minimum. Valve
boxes shall be installed with the box tops one inch above the surface of surrounding finish grade in shrub
area, and flush with turf areas.
3.06 Controller
A. Controller shall be located behind shrubs and/or adjacent to other hardscape items. Maintenance access
shall be provided.
B. The irrigation system shall be programmed to operate during the periods of minimal use of the design
area and at time of least evaporation and wind turbulence, generally 2:00 am to 6:00 am.
C. The controller shall be programmed so that each valve operates separately.
3.07 Wiring
A. Wiring shall occupy the same trench and shall be installed along the same route as the pressure supply
lines wherever possible.
B. Where more than one wire is placed in a trench, the wiring shall be taped together at intervals of 12 feet.
C. All connections shall be of an approved type and shall occur in a valve box. Provide an 18 inch service
loop at each connection.
D. An expansion loop of 12 inches shall be provided at each wire connection and/ or directional turn, and
one of 24 inches shall be provided at each remote control valve.
E. A continuous run of wire shall be used between the controller and each remote control valve. Under no
circumstances shall splices be used without prior approval.
F. Wire running from controller to control valves shall be AWG -UF 600V, No. 14 minimum, solid core,
single conductor copper wire, and style Br. (direct burial type).
G. Spare control wires shall be run to valve box locations as shown on the plans. Provide an 18 inch
expansion loop at valve box.
3.08 Flushing the System
A. Prior to installation of sprinkler heads, the valves shall be opened and full head of water used to flush out
the lines and risers.
B. Sprinkler heads shall be installed after system flush has been completed.
3.09 Water Saving System
A. The water saving system shall have one rain collection unit connected to the time clock.
B. The system shall have one or more rain collection units per time clock and one rain collection unit per
three designated valves, and will use irrigation wiring.
C. The rain collection unit shall be wired to the existing solenoid wires, and allow switch of use of time clock
wires from power of valve to part of water saving system.
D. The rain collection unit shall not require any down time field maintenance.
3.10 Sprinkler Heads
A. Sprinkler heads shall be installed as designated on the drawings.
B. Spacing of heads shall not exceed maximum indicated on the drawings or in manufacturer's directions.
C. Head height in relation to finish grades shall be as indicated on the drawings at the time of completion.
3.11 Adjusting the System
Contractor shall adjust valves, align sprinkler heads of each system to maximize coverage to 100 % and
minimize overspray prior to planting.
3.12 Irrigation Sleeving
A. Provide minimum cover of 18 inches on irrigation sleeves to be provided under all paving.
B. See 3.02 (Trenching) and 3.03 (Backfilling) for further information.
3.13 Completion Cleaning
Upon completion of work, Contractor shall smooth all ground surfaces; remove excess materials, rubbish,
debris, etc.; sweep adjacent streets, curbs, gutters, walkways, and trails; and remove construction equipment
from the premises.
R I C H A R D
popt
Landscape Architecture
Urban Design & Planning
181 N. F Street, San Bernardino, CA 92401
phone: (909) 888-5568
fax (909) 384-9854
e-mail: rpa.la@ve6zon.net
Richard Pope, Landscape Architect CA# 2664
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Owner/Applicant:
Pacific Grove Corporation
19 Corporate Plaza, Ste 210
Newport Beach, Ca 92660
Attn: Bud Elam
(949)706-6752
Sheet Description:
Irrigation
Specifications
Date: October 6, 2004
RP*A Job No.: 04-29
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Sheet Description:
Irrigation
Specifications
Date: October 6, 2004
RP*A Job No.: 04-29
Drawn by: LKO JRO
KCV151on5:
Sheet:
L=8
Of: 9