HomeMy WebLinkAboutReso 1975-7858
RESOLUTION NO 7858 -
RESOLUTION OF THE CITY COUNCIL OF THE CITY OF
CHULA VISTA ADOPTING CITY OF CHULA VISTA
LANDSCAPE MANUAL REVISED JUNE, 1975
The City Council of the City of Chula Vista does
hereby resolve as follows:
WHEREAS, the City Planning Commission has determined
that the Landscape Manual considered by the Planning Commission
on July 9, 1975 meets the needs of the City providing guide-
lines for planning, review, erosion control, irrigation systems,
specifications, standard drawings and other detailed city re-
quirements, and
WHEREAS, the Planning Commission has considered the
testimony of the public in a hearing held on July 9, 1975
regarding development of a revised Landscape Manual, and
WHEREAS, the City Council of the City of Chula Vista
adopts the recommendation of the Planning Commission as set
forth in PCM 75-8 incorporated herein by reference attached as
Exihibit A.
NOW, THE REFORE, BE IT RESOLVED that a revised C ity of
Chula Vista Landscape Manual, dated June 1975, attached hereto
as Exhibit B, is hereby adopted by the City of Chula Vista as
the Landscape Manual for the City of Chula Vista.
Presented by Approved as to form by
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D. J. P son, Director of George D. Lindberg, City At orne~
Planning
ADOPTED AND APPROVED BY THE CITY COUNCIL OF THE CITY OF
CHULA VISTA, CALIFORNIA, this S day of Aueust ,
197 S, by the following vote, to-wit:
AYES: Councilmen Hyde, Egdahl, Scott, Hamilton
NAYES: CounciZm,en None
ABSENT: Councilmen Hobel
Mayor of the City of Chula Vista
ATTEST ,~, - , ~ , ~_~ZiJi
Ci' C erk 77~~'"`--
v
STATE OF CALIFORNIA )
COUNTY OF SAN DIEGO ) ss.
CITY OF CHULA VISTA )
I, JENNIE M, FULASZ, City Clerk of the City cf Chula Vista,
CaZifornza, DC HEREBY CERTIFY that the abcve and foregoing is a full,
true and correct copy of
that, the same ha.~ not been amended or repealed
DATED
'SEAL)
CC-660
ty CZer
and
7~~~
RESOLUTION NO. PCid-75-8
RESOLUTION OF THE CITY PLAtiFI?Nf, COfdi9ISSI0N RECO'4MLNDINIi
TO THE CITY COUNCIL TH[ ADOPTIO?t OF A REVISED LINIDSCA^C
MANUAL
~BoB~T
WHEREAS, the City of Chula Vista has a !_andscape Manual adopted in
7~s ~
July, 1969, which contains standards for the installation of trees, shrubs
and plants, and
WHEREAS, over a sir, year period certain drav:backs and om-fissions in
the standards have beco!ne apparent, and
WHEREAS, the City has conducted a thorough study and review of the
Landscape Manual and desirable revisions to provide i'or: a plan review
process, erosion control, irrigation systems specifications, standard
drawings, a glossary, sample landscape and irrigation plans, bond require-
ments, specific maintenance reguirements, standards for landscaping pole
signs, and details for the use of mounding, and
4lHEREAS, the City Planning Crnnmission set the time and place for a
public hearing to consider adoption of the revised Landscape Manual, and
notice of said hearing, together with its purpose, was given by the publi-
cation in a newspaper of general circulation fir, the city at least 10 days
nrlnr to thn ria to pf ca;a h~,_,-,fig an;~
WHEREAS, a hearing was held at said time and place, namely 7:00 p.m.,
July 9, 7975 in the Council Chamber, City Hall, 276 Fourth Avenue, before
the Planninn Commission, and said hearing was thereafter closed, and
WHER.CAS, the Planning Commission found that in accordance with the
negative Declaration issued on December 27, 1973, adoption of the proposed
revised landscape Manual will not have any pcssiblc significant: impact cn
the environment, and certifiied that. the Negative Declaration v;as prepared in
accordance with CEQA, 1970, as amended.
NOW THCREFORE [iE IT RESOLVED tP:at the City Planning Conunission hereby
recomr:ends to the City Council tiro approval of the Landscape Manual, Revised
June, 1976.
PASSED and APPROVED by the CITY PL.ANNINO COMhi?SS]ON of CIiUI_A VISTA, CALIFORNIA,
this 9th day of July, 1975, by the follmving vote, to-wit:
AYES: Con;missiorers Smith, Floto, Starr and Chaadler
NOES: None
AnSENT: Cononissioners Pressutti, Rudolpl;gqand Rice 11 // `r/
ATTCST: ~>" Chairman
CITY OF CHULA \IISTA
LANDSCAPE f1A*7UAL
Draft: April 1975
Revised: June 1975
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Table of Contents
Page
Table of Contents i
Introduction. ii
1. General Landscape Standards. 1
2. Landscape Elements. .. .. _ 2
3. Landscape Plans - 3
4. Plan Review Process. 6
S. Landscaping within the Public Right of Flay .
or a Tree Easement. 8
6. Parking Areas. 8
7. Pole Sign Planters 9
8. Erosion Control Slope Planting 10
9. DSaintenance. 10
10. Decorative Lighting. 11
11. Special Standards for Planned Unit
Developments. 12
12. Bonding. 13
13. Standard Specifications. 13
14. Irrigation 15
Glossary. .. 25
Stan dard Drawings. 27
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erosion control. When new development or redevelopment takes
place, it usually involves the disturbance of natural slopes and
the destruction of some topsoil.
Replanting of graded slopes accomplishes the following:
° Checks wind erosion
° Checks water erosion
° Rebuilds the soil
° Enhances the appearance of the area
The alternative to planting is, of course, paved slopes and
the excessive use of paved channels.
Planting to enhance and protect the cityscape is a simple,
logical approach to conservation of the quality environment
desired by all.
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INTRODUCTION
It is with considerable pleasure that the Chula Vista
Planning Department submits this municipality's recently adopted
Landscape PSanual to the people, design professionals, and con-
tractors of the Chula Vista Planning Area. While the new manual
incorporates much of the technical information embodied in the
old manual, it places a greater emphasis upon landscape design,
and the emerging role of landscaping as an environmental
planning art.
Landscaping can no longer be regarded as botanical decora-
tion. It also can no longer be lirmited to the remedial role of
teripering poor building designs, ineffective land plans, or
insensitive highway plans. Acceptable landscaping must meet the
public's deman3 for orderly growth, i.:.proved amenity, aesthetic
quality, and environmental progress. Cities are the masterpiece
of man, and their comprehensive landscape must conform and pro-
iuote iris iiigiiest ideals,
In terms of landscape planning, the City is responsible for
the protection of two inherent values of the existing landscape
and future changes in the landscape.
The First and most commonly thought of reason for landscaping
is its aesthetic value. Visual qualities are protected by nini-
mum planting requirements and good landscape design.
A second, and by no means less important value, is that
plants are the least expensive and most appropriate form of
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1. GENP•,R7+L LI~NDSCAPF. STIINDI~RDS
1.1 Single family and two family dcaellings. The construction
of single family homes or duplexes on an individual lot
with no graded slopes does not require the submission of
a landscaping plan; however, planting and irrigation plans
are required for those areas zoned P.U.D. (Planned Unit
Development) or P (Precise Plan) wherein specific landscaping
requirements are part of the approved plan. In addition,
the creation of any slope areas tahich require a grading permit
will require planting and irrigation plans. The general,
standard for those lots not requiring complete plans will be
one street tree per lot. Lach lot with a width of 60 feet
or less will provide one street tree. Lots t~aider than 60 feet
shall provide a street tree every 40 feet.. Trees shall be
planted in the public right of way or in a tree easerneni. No
plan is required; however, tree sizes and species must be in
accordance with the City requirements for street trees, (see
Chapter i2.s2 of the Cirula vista iiunicipai Code.i
1.2 Development other than Single Family and Duplex Construction
The following projects will require the submission of complete
landscape plans, including planting and irrigation plans.
(See Sections 4.1 and 4.2 for processing)
° Multiple Family
° Commercial
° Industrial
° Planned Unit Development
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° Unclassified Uses
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° Remodeling over $10,000 for the above uses
° Developments with Precise Plans
° Parking Lots with five or more stalls
° Graded Slopes
2.
LANDSCAPE ELEMENTS
2.1 Grading. All grading shall conform to City grading
standards. (See Chapter 15.04 of the Plunicipal Code)
2.2 Planting. All areas of the site on which new grades
have been created or vegetation has been disturbed will be
planted. One of two types of planting will be required.
Type I plantings are those orhich require an ongoing
water treatment which is greater than natural
rainfall. Generally, all visible areas adjacent
to the right of way ~vi11 be Type I plantings.
The City Landscape Architect may designate any other
areas as Type I if required to maintain the
aae t}latir ~~2 cal i.tj~ pf tha CnmmiiP=ty. Included 1P_
Type I planting will be fire resistant strips
necessary between structures and natural open
space.
Type II plantings are defined by the characteristic
that, once established, the plants will survive
and grow with only natural rainfall. For ex-
ample, Type II plantings could consist of hydro-
seeding with native vegetation which is irrigated
until materials are established.
2
2.3 Irrigation. Irrigation either by a permanent auto-
matic sprinkler system or manually controlled sprinkler
system shall be installed as appropriate to the type of
planting served. Generally Type I plantings will require
a permanent automatic sprinkler system. Type II plantings
will require a temporary sprinkler system. A few small
plantings of either type may be served by a hose Bibb if
the hose bibb is no further than 50 feet from any point in
the planting area.
2.4 Decorative Landscaping. The use of architectural
features, paving, fences, walls, mounds, boulders, gravels,
lighting, water and inert ground covers is encouraged in
conjunction with landscape plantings, if they are well
designed and compatible with community aesthetic values..
2.5 Earthen }mounds. Mounds which are used as screens
and/or to receive plant material shall have a slope no
steeper than 2:1. (Example: a 2 1/2 foot high mound with
a rounded top would require a minimum planter width of
approximately 14 feet.)
3 LANDSCAPE PLANS
3.1 General Requirements
3.1.1 Name, address, phone number, date, and signature
of person who prepared the plans. Landscaping and
irrigation plans shall be prepared by a licensed land-
scape architect or a person who is knowledgeable in:
3.1.1.1 Principles of hydrology.
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3.1.1.2 Performance characteristics of irrigation
systems and equipment.
3.1.1.3 Plant species and the planting requirements
and care of plants.
• 3.1.1.4 Installation practices for plants and
irrigation system,
3.1.1.5 Soils analysis and grading techniques.
3.1.1,6 Landscaping and irrigation design
principles.
3,1.1.7 The terms, standards, and techniques•
specifications used in this Landscape Dianual.
3,1.2 Plans shall be prepared in such a manner as
to delineate all proposed improvements in a clear,
accurate, and complete manner. All existing utilities
and structures shall be shown.
3.1.3 Planting and irrigation plans will be submitted
on 24" x 36" blueline or blackline copies. When
planting and irrigation plans are required by the
Department of Public Works, they shall be prepared in
ink on a standard Chula Vista "D" sheet linen (24"
x 3G" overall dimensions) which is available in the
Engineering Division, An alternate method of preparation
is to draw the plan in pencil on a standard Chula Vista
"D" sheet vellum (also 24" x 36"). Upon final approval
of plan, however, a mylar reproduction shall be provided
by the applicant.
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3.2 Planting Plan Requirements
3.2.1 Installation size and location of plants.
3.2,2 Symbolic representation of mature size of
proposed plants.
3.2.3 Botanical and common names of all plants
including seeds or stolons to be planted.
3.2..4 Specification of quantity, quality, and in-
stallation of plants, seeds, soil amendments, herbicides,
insecticides, and fertilizers.
3.2.5 Details of various landscape features as required
to clearly define the intended finished installation.
3.3 Irrigation Plan
3.3,1 Static water pressure available at the meter.
3.3.2 Meter size and- location.
3.3.3 Point of connection to water source.
3.3.4 Type, size, and location of backflow device(s)
proposed.
,},s,5 •lype, S1Le, a.nQ 1UUati1 U11 V.L CUI1t1Ul Va1VHS.
3.3.6 Type, size and location of automatic controller,
if applicable.
3.3.7 Type, size, class and location of all pipes.
3.3.8 Type and size of all conduits or chase pipes.
3.3.9 Type, size and location of all irrigation heads.
3.3.10 Elevations sufficient to calculate head (psi)
° gain or loss in any given circuit and to determine the
need for pressure reduction, pressure relief or air
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• release devices when elevation variations create a
head (psi) gain or loss of ten (10) pounds or more.
3.3.11 Provide model(s)/brand(s) of irrigation equipment
specified or complete description of equipment as a
material and performance specification,
3,3.12 Refer to the sample irrigation plan and/or
consult the City Landscape Architect if necessary.
3.4 Other Plans (if applicable)
3.4.1 Outdoor lighting plan.
3.4.2 Special grading for decorative purposes (mounds,
waterways, etc.).
3.4,3 Shop drawings of entrance signs, directional
signs, landscape furniture, etc.
4 PLAN REVIEV7 PROCESS
4.1 Slope Planting and Irrigation. The procedure for
processing slope planting and irrigation plans is as follows:
4.1.1 Submit four (4) copies of all required slope
pla_nting, i_rr_R~ti_nn slang, an~7 ni_hor n]_?nc~ if
applicable, to the Engineering Division. (See Section
3.1.3 for map size)
4.1.2 Plans will be reviewed by the Planning, Public
~9orks and Parks and Recreation Departments for
compliance with applicable ordinances.
4.1.3 ~9hen plans have been checked, applicant will
be notified so that he may pick up plans and make
necessary corrections. Four (4) copies of the corrected
plans and the check prints will be resubmitted to the
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Engineering Division for further checking. If corrected
plans are acceptable, they will be approved by the
Directors of Planning, Public 1~orks, and Building and
Housing, (and Parks and Recreation, if an Open Space
Maintenance District is involved.)
4.1.4 Following approval, the applicant shall furnish
the Engineering Division with four (4) blueline or
blaclcline copies of the signed plans. If the plans
were prepared on vellums, applicant ~vill also furnish
one complete set of mylar reproductions,
4.2 New Construction. The procedure for processing planting
and irrigation plans for new construction (See Section 1. 2)
shall be as follows:
4.2,1 Submit three (3) copies of planting or irrigation
plans to the Building Department with all required
building plans. (See Section 3,1.3 for map size)
4.2,2 Plans will be reviewed by the Planning and Public
Works Departments for compliance with applicable ordinances.
4.2.3 41hen the plans have been checked, the applicant
will be not.ifed so that he may pick up the plans and
make the necessary corrections.
4.2,4 Three (3) copies of the corrected plans and the
check prints will be resubmitted to the Engineering
Division of the Public Works Department for further
checking.
4.2,5 If corrected plans are acceptable, they will be
approved by the Planning and Public Ykorks Departments.
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5. LANDSCAPING WITHIN TILE PUBLIC RIGHT OI' WAY OR A TREE EASEMENT
5.1 Upon approval by the Department of Public Works, shrubs
or plants attaining more than two feet in height upon maturity
may be planted in the public rights of way, provided that
they are not planted within 30 feet of any intersection of
the public right of way.
5.2 An encroachment permit is required for any irrigation
system within the right of way.
5.3 Tree sizes and species must be approved and in
accordance with the City requirements. (See Chapter 12.32
of the Chula Vista Municipal Code.)
5.4 All trees shall be a minimum of 15 feet from any fire
hydrant, light standard or utility pole.
5.5 Plants and other landscape features which may pose an
unusual health or safety problem are not acceptable.
5.6 A landscape plan will be required for any landscape
improvement beyond street tree planting and lawns with
gradients of five (5~) percent or less.
6. PARKIP]G AREAS
6.1 Any parking lot for 5 or more vehicles shall require a
landscape strip (10 feet minimum) between the lot and the
public right of way. This strip shall effectively screen
the parking lot from the public right of way to a minimum
height of 3 1/2 feet. Any approved combination of planting,
mounds, walls and/or decorative features, which are visually
compatible with community aesthetic values, may be utilized.
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6,2 A G foot wide side yard landscape strip shall be
required in commercial and industrial lots where they abut
a residential or institutional zone or land use where a
zoning wall is not required. A 5 £oot minimum decorative
masonry wall or chain link fence or approved equal type
fencing with vines in combination with tree planters may
be considered in lieu of a planting strip.
6.3 A minimum of 10 per cent of the interior of any parking
area shall be devoted to landscaping. The 6 loot landscaped
strip and the 10 foot landscaped strip mentioned above will
not be included in the 10 per cent figure, Pleasing decorative
paving of brick, stone or the will be considered in lieu
of a plant ground cover although one tree in a minimum
sixteen square foot cutout-for every 100 square feet of
decorative paving o;ill be required.
6.4 Planters, walls and fences in the parY,ing areas shall
have a protective curb or other device, such as decorative
pylons or poles, to protect against damage to plants, wails
and fences.
6,5 Planting areas which abut vehicle stalls will have a
minimum paved strip 18" wide to provide for access to and
from parked vehicles.
6.6 Parking lots will require a landscape submittal,
including planting and irrigation plans.
7 POLE SIGN PLANTERS
Planting areas will be required at the base of all freestanding
pole signs. Planter sizes will be :according to the following
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dimensions:
Sign Fleight
In Peet
1-10
10-20
20-35
*Inside dimension.
8.
Planting Area
in Square Peet
20
40
100
flinimum Width*
In Peet
3
5
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Minimum cover of soil over footings should be I8" in order
to provide adequate room for small shrubs and ground cover
root growth.
EROSIOD: CONTROL SLOPE PLANTIPIG
All slopes which are created by grading of otherwise denuded
of vegetation during construction shall be planted with one
of the two planting types defined in Section 2.2. In
addition, slopes over 6 feet in vertical height shall be
enhanced with one (minimum; 1 gallon container size tree
or shrub per 100_square feet or 4 liners per 100 square
feet. These plants should be placed to create a pleasing
aesthetic arrangement.
9. MAINTENAPICE
9.1 All landscaping required in connection with the con-
struction o£ multiple family, commercial, industrial, Planned
Unit Development, and unclassified uses shall be maintained
by the owner. A copy of a valid landscape maintenance
contract or an affidavit of the person responsible shall be
filed with the City Clerk. Contract copies shall be refiled
upon renewal. Affidavits of the responsible person shall be
refiled upon change of responsibility. Overall appearance
of the landscape shall be neat, healthy and free of weeds
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and debris.
Individual plants shall show vigorous gro~•~th typical of
their species. If, at any time in the opinion of the City
Landscape Architect, the maintenance level drops below the
level described above, he will notify the o~~ner in writing.
the owner shall have sixty (G O) days beyond notice to correct
the condition or the City shall clean and maintain the
development and bill the Owner(s) for such services.
9.2 All new construction under Section 1.2 above shall
conform to the requirements of Section 9.1 above and, in
addition, shall be subject to a one year landscape installation
guarantee, (by owner as to material and workmanship). The
installation shall conform to the City approved landscape
plan. All planting and irrigation equipment shall be
guaranteed by owner for one full year after the installation
is accepted by the City Landscape Architect. The rate of
growth and establishment of all planting will be monitored
by the City Landscape Architect. If plants do not grow .
in a manner typical of their species under the site conditions,
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he may require remedial measures such as additional planting
or replanting, weei'.ing, additional fertilizer or other
adjustments. `Phe City Landscape Architect has the option
to extend the one year period in order to achieve normal
plant growth and establishment.
requirements).
DDCORATI~~ LIGHTING
(See Section 12 for bonding
If decorative lighting is used it must be installed to the
manufacturer specifications and all applicable codes and
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the layout must appear as part of the landscape plans for
approval by the City Landscape Architect. Conventional
security and functional lighting is not considered decorative
for the purposes of this manual.
11 SPPCIAL STANDARDS FOR PLAr]NED UNIT DEVDLOPMDNTS
These standards supplement the specific standards above and
do not replace them (See also PUD Policy, para. 6).
11.1 Level areas (5% grade or less - see PUD Policy) shall
be predominantly covered with a ground cover such as grass,
to promote recreational use.
11.2 A minimum of two trees per dwelling are required
exclusive of street trees and slope trees. These trees may
be installed anywhere as required to effect a good design.
11.3 At least 15 percent of the trees shall. have a minimum
caliper of 3" if standards and 2" if multiple trunks unless
otherwise approved by the City Landscape Architect.
11.4 At least 25 percent of the trees shall be a minimum of
1 1/2" caliper if standards and 1" if multiple trunks.
11.5 The balance (60 percent maximum) shall be 5 gallon size
unless otherwise approved by the City Landscape Architect.
11.6 Additional trees shall be required in open space areas;
they shall be a minimum of 5 gal, unless otherwise approved by
the City Landscape Architect. A variety of trees shall be
utilized to effect interest: columnar, wide and medium spreading,
etc. Additional 5 gal. shrubs and trees shall be used throughout
the project in adequate number to accent open areas, buildings
and screen parking areas.
11.7 Additional specimen materials shall be utilized near the
entrance to the project and along dedicated streets.
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Street trees shall be a minimum of 15 gal. container size
and shall be a minimum of 6 feet tall with a 1 1/2" caliper
when planted.
11.8 A preliminary landscape plan is required at the time
of filing the tentative subdivision map and a final landscape
plan is required at the time of submitting a grading plan,
12 BONDING
Bonds in amount of 100 of the
irrigation and maintenance are
of grading plans for a grading
recording of any final subdivi
an estimate, it is recommended
be contacted.
13 STANDARD SPECIFICATIOPIS
estimated cost of planting,
required with the submittal
permit and/or prior to the
lion map. Prior to submitting
that the Planning Department
13.1 Geed Abatement. The method of weed abatement shall be
specified in the landscape plans and subject to the approval
of the City Landscape Architect.
1 _2 ~ 7 Plant T'fa truer _al Till ` l ant ma}prial ci ari~iP~l chal f ~ici
according to American Standard for Nursery Stock as adopted
by the American Association of Nurserymen.
13.3 Plant Pits. (See Table on Standard Drawing Sheet 1)
Larger plant materials shall have a pit size that will clear
the original root ball by a minimum of 12" on all sides and
the bottom. All bac}:fill shall be a minimum of one third
organic soil amendment and thoroughly mixed with native soil.
13.4 Staking. See Standard Drawing Sheet 1
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13.5 Ground Covers All species planted from unrooted cuttings
shall be planted on maximum 9" triangular spacing. Rooted
ground covers shall be planted on a maximum of 12" triangular
spacing. Carpobrotus edulis may not be used without the approval
of the City Landscape Architect.
13.6 Hydroseeding. The specification of the hydroseed mix
is the responsibility of the applicant or his landscape architect.
Required information is:
1. Seed species by botanical name.
2, Application rate in pounds/acre of each species.
3. Puri~y and germination percentage if available.
4. Fertilizer type and application rate per acre.
(Soil analysis may be required)
5, Soil stabilizing chemical, if used, by brand name
and application rate per acre.
6, Fiber mulch material by brand name and application
rate per-acre.
13.7 Soil Preparation. All fill slopes, 3:1 or steeper,
shall have a minimum of one cubic yard per 1000 square feet
of organic soil amendment incorporated into the top 3" and
compacted prior to planting or seeding. All cut slopes shall
have the same rate of the same materials broadcast on the
soil surface prior to planting or seeding. All other planting
areas shall require either new friable top soil, an organic
soil amendment, or a graded sand amendment. The specified
installation method shall be subject to approval by the City
Landscape Architect.
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13.II fertilizers. All planted areas shall be fertilized
with a complete commercial fertilizer (nitrogen., phosphate,
potasium). It must also contain iron or a separate application
of iron must be made. Slow release fertilizers shall be
applied during plant installation and at the end of the one
year guarantee period. In addition, individual plants shall
be fertilized with the same type of fertilizer or a 21 gram
balanced tablet at the following rates:
1 gallon -- 1 tab
5 gallon -- 2 tabs •
15 gallon -- 4 tabs
All other types shall be applied at least 3 times at no greater
intervals than 3 months. The fertilizer application rate is
subject to the approval of the City Landscape Architect.
14 IRRIGATION
14.1 Material Standards
14.1.1 Pipes
T~n.,.,t uhlL. ,~; r'^.S ':.CIL'.de +he fL.l l.J-:•: 1.^.g:
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(a) Polyvinyl Chloride Pipe:
(1) Type of material: PVC type I and/or
type II, manufactured in accordance with
commercial standards, CS-256 or CS-207.
(2) Identification: All pipe and fittings
have markings which indicate the manufacturer's
name, production control number, class or
schedule number, type and grade of material,
pipe size.
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(b) Galvanized Iron Pipe:.
Type of material: Iiot dipped galvanized steel
conforming to the specifications of A.S.T.M.
Designation A-120, Standard Pleight (Schedule 40).
• (c) Asbestos Cement Pipe: (4" minimum size)
(1) Type of material: Pipe shall conform to
requirements of the latest revision of A.W.~4.A.
Standard Specification C-400 as to material,
workmanship, strength, methods of sampling,
markings, inspections and test.
(2) Unless otherwise specified, all pipe
.shall be Class 150.
(3) Cast iron fittings for asbestos cement
pipe shall conform to the requirements for
A.P7.Y7.A. Standard Specifications for Short
Body, Class 250. All cast iron fittings and
valves shall be cement lines and seal coated.
(4) Identification: All pipe and fittings
shall have markings which indicate the pipe
size and class and/or workir_3 pressure.
(d) Aluminum Pipe:
Type of material: Pipe shall .be of a commer-
cially manufactured type with steel couplings,
valves and fittings,
(e) Copper Pipe:
Type of material: Pipe shall be a minimum
Type "L".
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(i) Pipe Schedule
Permanent Systems Above Ground
Pressure Pipe Copper-Type "L"
Fittings
Lateral Pipe
Copper-Type "L"
Galy.-Sch. 40
Copper-Type "L"
Underground
PVC-Class 315
PVC-Sched. 40
Copper-Type "L"
Asbestos-Class 150
PVC-Sched. 40
Copper-Type "L"
Cast iron-short
body-Class 250
PVC-Class 315
PVC-Class 200
PVC-Sched. 40
Copper-Type "L"
Asbestos-Class 150
Galt'. Sch". 40
Fittings Galt'.-Sch. 40 PVC-Sched. 40
Copper-Type "L" Copper-Type "L"
Cast iron-short
body-Class 250
Galt'. Sch. 40
Temporary Systems Above Ground
Pressure Pipe
Galt'.-Sch. 40
Copper-Type "L"
PVC-Class 315
PVC-Class 200
Alum.-Class 150
Underground
Same as permanent sys.
plus Galt'. Sch. 40
Fittings Same as permanent Same as permanent sys
systems plus
PVC-Sch, 40
Alum.-Class 150
Lateral Pipe
Fittings
Same as permanent
systems plus
PVC-Class 315
PVC-Class 200
Same as permanent
systems plus
PVC-Sch, 40
Same as permanent
systems
Same as permanent
systems
c
_~~'~~ 17
14.1.2 Sprinkler ]ieads
Sprinkler heads shall be a commercially manufactured type
acceptable to the City Landscape Architect. Plastic heads
are not acceptable, except for temporary systems or
upon approval by the City Landscape Architect.
14.1.3 Automatic Control Valves (Electric & Hydraulic)
All automatic control valves (electric) shall be globe
or angle pattern, electrically controlled, hydraulically
operated, normally closed type. Valves shall automatically
close in event of electrical power failure. All control
wire shall be of the Underwriter's Laboratory type OF
(underground feeder), single conductor, solid copper,
plastic insulated, 600 volt rated for direct burial
application.
All automatic control valves (hydraulic) shall be normally
closed type. Control tubing shall be of a commercially
i
manufactured type acceptable to the City Landscape
Ar i.i1 i i:6 v'v .
Electrically controlled irrigation systems shall comply
with the requi-rements of the 1971 National Electrical
Code, Article 725.
14.2 Irrigation Design Criteria
The follo~~~ing criteria are to be complied with in the design
of slope irrigation systems:
14.2.1 Precipitation Rate
Application of water for sprinkler heads shall be from
1/8 inch (0,125") per hour to 1/4 inch (0,250") per hour
unless otherwise approved by the City Landscape Architect.
is
Calculation of precipitation rate:
Precipitation Rate (Inches/Hour) = 9G-S x L P.M.
96.3 - constant
G.P.M. = Gallons per minute for sprinkler head selected.
S - Spacing between sprinkler heads (feet)
L - Spacing between rows (feet)
14.2.2 Velocity of Flow
The system shall be designed to operate at a water
velocity not to exceed-five (5) feet per second.
Velocity' ~ G.P.M.
, x Dia 2
G.Pc.~4. = Gallons per minute Slow through pipe
2.45 = constant
Dia 2 = Inside diameter (inches) of pipe squared.
14.2.3 Spacing Requirements
Maximum spacing requirement for sprinkler heads are the
following:
(a) Rotary, Impact and rotary stream spray type:
600 of sprinkler head coverage diameter
(b) Stream spray type: 50~ of sprinkler head
coverage'; diameter
(c) Shrub or lawn spray type: 60~ of sprinkler
head coverage diameter.
14.2.4 Backflow protection
F3ackflow protection must be provided for all irrigation
systems. Approved backflow devices and their installation
requirements are as Sollows:
19
~~ f'~d
(a) Atmospheric Vacuum Breaker
Installed a minimum of six inches (6") above the
surrounding ground and above all of the heads
so at no time will the vacuum breaker be subjected
to back pressure or drainage. No valve of any type
may be installed on the discharge side of the vacuum
breaker, nor shall it be used under continuous
pressure. Atmospheric vacuum breakers may be an
integral part of the irrigation control valve.
(b) Pressure Vacuum Breakers
Installed a minimum of twelve inches (12") above
the surrounding ground and above a majority of
heads so at no time will the vacuum breaker be
subjected to back pressure or drainage. Irrigation
control valves may be installed downstream from the
vacuum breaker.
(c) Reduced Pressure Backflow Protection
Installed at a location where the relief valve is
not subject to flooding. It may be installed under
continuous pressure service and may be subjected
to back pressure.
14.2.5 Line Drainage Erosion Control
Line drainage erosion control shall be indicated on the
plan or in the specifications wherever applicable:
Acceptable methods of erosion control are the follocaing:
(a) Anti-drain valves - installed under heads or
in line as necessary. '
20
(b) Double layered jute matting or an acceptable
substitute,
(c) Redwood board downdrain (1" x 4").
(d) Lined ditch downdrain (2" concrete or air blow
mortar) .
14.2.6 Miscellaneous Design Criteria
(a) Gate valves are to be used as emergency shut-off
valves and not as manual control. valves for sprinkler
systems.
(b) Sprinkler circuits shall run parallel or'as
close to parallel to the contour lines as is practical.
(c) Sprinkler heads within a circuit shall have a
uniform precipitation rate. To achieve this, the
following are recommended:
(1) Sprinkler head types (i,e „ impact, stream
spray and shrub spray) should not be mixed
within a circuit,
(2) Independent circuits should be used when
watering from the top of slope downhill, and the
toe of slope uphill, on slopes 6 feet and greater
in height.
(3) Operating pressure differential on any one
circuit should not exceed the limits of the
sprinkler head used,
(d) Every lot shall have an independent irrigation
system unless otherwise specified by the City
Landscape Architect.
r
21
~,~ S~
(e) Wateriny across property lines shall not be
allowed unless permission has been granted by the
City Landscape Architect.
(f) Swing joints shall be installed on lines at
all abrupt changes of grade.
(g) Pressure regulators, pressure relief valves,
thrust blocks and other irrigation appurtenances
shall be xequired at the discretion of the City
Landscape Architect.
14.3 Installation Procedures
14.3.1 Pipe Installation
The following are minimum criteria to be complied with
for pipe installation.
(a) Trench width and Depth Schedule:
PVC and COPPRR GALV.IRON A.C.P.
PIPR PIPD
(Pressure)
Trench Depth 18"* 24" 18" 24"
(Non-Pressure)
Trench Depth 6" 18" 6" 24"
on slopes
Width Dia. + 4" Dia. + Dia. + Dia. +
. 12" 4" 12"
*D4ay be shallower if supplemental protection is provided
(b) Staking and Risers,
(1) All pipe used above ground shall be staked
every fifteen feet, or less, with stakes made
from metalic or non degradable materials.
Plinimum length of stake: Thirty inches (30")
on fill slopes, 24" on cut slopes.
22
(2) All fasteners shall be "Punch-Loc,"
Plumber's tape, worm screw type, galvanized
wire or equivalent.
14.3.2 Flushing and Testing
After all new irrigation piping and risers are in place
and connected and prior to the installation of irrigation
heads and/or quick coupling valves, the systems shall
be flushed and made ready for testing,. To insure proper
functioning of the sytem, all pressure irrigation piping
shall be hydrostatically tested.
14,3.3 Installation of Direct Burial Control ~•Iires
All direct burial control wire shall be installed in a
trench and to the side or below any pipes in the same
trench. Minimum trench depth when installed without
pipes is 18" unless supplemental protection is provided.
(Section 339-3C NEC)
Whenever direct burial control wires are to be installed
in r n ~.i r vi c~Finrr t, .. ' a..
L..de_ e.. o e.. _., ., impr., ........nty such as 1.LL1~JJ, 5iuc-
walks, and/or pavements, they shall be installed in a .
polyvinyl chloride conduit of the size noted on the plans,
which shall extend one foot beyond each side of the
improvement. The letter "E" shall be stamped or chisled
on the improvement directly above the conduit. All wire
splicing shall take place in the valve boxes and/or pull
boxes. All splices shall be made with a mechanical
connector encased in a self-curing epoxy resin or equal,
r
23
~s~
which provides a permanent watertight connection.
_ 14.3.4 Installation of Control Tubing
All control tubing shall be installed in a trench to the
side or below any pipes in the same trench. Minimum
trench depth when installed without pipes is 12".
24
GLOSSARY
ATMO5PHEP.IC VACUUM BREAICER (A.V.B.) - A device that prevents
the reverse flow of water. The device is normally downstream of
the control valve and above the highest head of the circuit served.
CIRCUIT - Commonly used to describe all of the heads controlled
by a conunon control valve.
CONTROLLER - Most common term used to describe an automatic device
which signals remote control valves to open or close. Controllers
are sometimes called "clocks".
CONTROL VALVE - Commonly used to describe the valve that operates
a single circuit of sprinkler heads.
HYDROSEEDING - Commonly used to describe the method of applying
seeds, mulch, Fertilizer and soil stabilizers to slopes or to
other areas which have no natural plant cover,
IRRIGATION LINES - Most commonly used to describe any pipes used
exclusively for sprinkler systems as opposed to other domestic
uses. Sometimes refers to only those lines downstream of the
control valve in a sprinkler system.
-LANDSCAPE ARCHITECT - One who arranges land and objects upon it
for human use and enjoyment and is licensed by the State to practice
landscape architecture. Specific services are consultation,
investigation, reconaissance, research, design, preparation of
drawings and specifications, and responsible supervision during
construction.
LANDSCAPE CONTRACTOR - Licensed (C27) by the State to install
plants, irrigation equipment and other landscape features as
r
~~~ `r~ 25
specified by the owner or a State licensed landscape architect.
Landscape contractors are not licensed by the State to prepare
landscape plans for sale.
LATEP.AL LINE - Most common term for irrigation lines dowstream
of the control valve. Sometimes called "irrigation lines."
MANUAL CONTROL VALVE (M.C.V.) - Term used to describe the control
valve but defines operation by hand.
NURSERYP•7AN - Refers to both the producer and the seller of plants
or seeds usually for ornamental purposes. Nurserymen are not
licensed by the State to prepare landscape plans for sale.
PRESSURE LINE - Most common term for lines upstream of the control
valve. Sometimes called "supply lines."
PRESSURE VACUUM BREAKER (P,V.B.) - A device that prevents the
reverse flow of water. The device is located on the pressure .
side of the control valve(s). Unless otherwise specified by the
manufacturer, this device is located above the highest head of
the circuit served.
RED70TE CONTROL VALVE (R.C.V.) - Term used to describe the control
valve but defines automatic operation by connection either
hydraulically or electrically to a controller or clock.
SUPPLY LINES - A common term for any line that is constantly
under pressure whether carrying or just holding water.
26
STANDARD DRAWINGS
Sheet
1 Street Tree pla nting and staking
lb Tree Planting a nd Staking
2 Shrub Planting
2a Shrub Planting in hardpan conditions
3 Typical Overall Sprinkler Installation
4 Typical A.V.B., R.C.V., & Gate Valve Installation
5 Typical A.V.B. & P.V.B. Manifold Installation
6 Typical Pressur e Back£low Preventer Assembly
7 Pressure Relief Valve Installation
8 Typical Impact Head
8a Typical Impact Head Assembly using flex-riser
9 Typical Nozzle Line Installation
IO Typical Pop-Up Lawn Head and Pop-Up Lawn Head with
Swing Joint Ass embly
l0a Typical Pop-Up (Rotor or Impact) Lawn Head Swing
Joint Assembly using flex-risers®
~~ ~~ ~ 27
1
SECURE TIE TO STAKE
THROUGH A HOLE OR
NAIL TO STAKE
FIGURE
• EIGHT
TIE
NOTE; USE STAKES SMALLER
THAN DIAMETER OF TREE
WHEN POSSIBLE. STAKE ALL
TREES EXCEPT THOSE
APPROVED BY THE LAND-
SCAPE ARCHITECT.
STAKE
TREE TIE FINISH
NO SCALE
CONTAINER
SIZE DEPTH
"A" WIDTH
"B"
I GALLON 12" 18"
5 GALLON 18° 2'O°
10 GALLON 21° 24"
15 GALLON 24" 30'~
16"BOX 24" 36"
18"BOX 26" 36"
I/2 BARREL 28" 42"
24"BOX 30" 42"
APPROX
I/2 TREE
HEIGHT
a
~r
t'
~+
ONE STAKE ON THE
WMVDWARD SIDE OF THE
TREE MAY BE USED
UNDER SOME CIRCUM-
STANCES.
zTREE TIES, VINYL
OR RUBBER HOSE
a WIRE
ROOTBALL
AT FINISH
GRADE
~~
BASIN
_ ROOTBALL OF
ORIGINAL
~~'^. i~~' CONTAINER
' PLANTING
BACKFILL
-~
_ PLANTING BACKI
(PUDDLE AND
SETTLE PRIOR
TO SETTING
OFTREE)
•~ - ~
I "Bn
12"MIN
SECTION
NOT TO SCALE
TREE PLANTING AND STAKING
(FOR STREET TREE PLANTING AND STAKING SEE SHEET 1b 1
1 ~_
SECURE TIE TO STAKE
THROUGH A HOLE OR
NAIL TO STAKE
FIGURE
EIGHT
TIE
AKE
APPROX.
I/2 TREE
HEIGHT
TREE TIE FINISH GRADE
NO SCALE /
ss ~
NOTES
I. A MINIMUM 15 GALLON CONTAINER
SIZE IS REQUIRED. i ::;
2.THE TYPE OF TREE(S) TO BE ~ ~ •
PLANTED WILL BE IN A000RD-
ANCE WITH CITY OF CHULA
VISTA"LIST OF APPROVED ~ ~''
STREET TREES" OR AS 2q"MIN. :•~ `.:: "~;,• ~ •.~_' ~ ' •~
APPROVED BY THE <. ~ - % •'' .:
L ;~;
DRECTOR OF PUBLIC _ ~' ' ~ • ' '
WORKS.
12"MIN.
SECT ION
NOTT~E
.3 TREE TIES, VINYL
OR RUBBER HOSE
AND WIRE.
~2°X2"X8•
ROOTBALL AT
-FINISH GRADE
BASIN
.`'.. I ~ .
- ROOTBALL OF
'.~
~:f
ORIGINAL
CONTAINER
PLANTING
BACKFILL
PLANTING BACKFlLL
(PUDDLE AND
,SETTLE PRIOR
TO SETTING
OF TREE)
~~s~,STREET TREE PLANTING AND STAKING
z
FINISH GRADE
ROOTBALL I"-2"ABOVE
FINISH GRADE
BASIN
III _
ITIiT_ ~.. ~ ~ -
,91 . ~ : , .~~.
,I
c~ c~ =_ ,,
u. ~ - _ ~. ~ ~ .•
- - ~ ~ ~ ~ ~.
.. ,,.
18" FOR I GAL.
?0° FOR 5 GAL.
SECTION
NOT TO SCALE
PLANTING BAgCFILL
ROOTBALL OF ORIGM~AL
CONTAINER
PLANTING BACKFI.L
(PUDDLE AND SETTLE
PRIOR TO SETTING
OF SHRUBS)
SHRUB PLANTING
2a
~ ~~ ~
~~
~ ~~~~~
FINISH GRADE
BASIN -~
a a
c~ ~
- ~
~ ~
O p
~ ~
N I m
b I ~Q
I rca
M xo
z ~a
~ o=
i1
I~~II . .
,,
., - .. ,~~
'
.
ROOTBALL I'~ 2" ABOVE
FINISH GRADE
BACKFILL
ROOTBALL OF ORIGINAL
CONTAINER
PLANTING BACKFILL
(PUDDLE AND SETTLE
PRIOR TO SETTING
OF SHRUBS)
I-2" CRUSHED ROCKED
IS" FOR I GAL.
20" FOR 5 GAL.
4"'-G' SECTION
NOT TO SCALE
»sy
SHRUB PLANTING
I N HARDPAN CONDITIONS
3
AUTOMATIC
CONTROLLER (ELEC.)
MON WIRE
CONC. VALVE BOX a COVER
MARKED (R.C.V.)
r 10 DIA. LOOP
I FINISH GRADE
CONTROL VALVE
CONTROL WIRE
CONC. BASE
CONC. VALVE BOX
~ COVER (MARKED
IRRIG, GATE)
ELL
MA•~ PVC ELL HER VALVES ~~ ~ ~``~ I i ~~
WHERE REQUIRED
-PVC MALE ADAPTOR
VC SCH A/CL.160 VALVE ADAPTOR
,•, .:
ti
SPRINKLERS FLOW
1 4-
PVC SCH. 40
MAIN SUPPLY
PEA GRAVEL
GATE VALVE (PLACE AS
CALLED FOR IN PLANS)
SECTION
NOT TO SCALE
TYPICAL OVER-ALL INSTALLATION
~,rss
4
ATMOSPHERIC VACUUM BREAKER
LOCATE MIN. 12" FROM WALKS,ETC. CONTROL WIRES TO
AUTOMATIC CONTROLLER
REMOTE CONTROL
VALVE (RCV) ROUND CONCRETE BOX
GLOBE OR ANGLE a COVER DEPTH AS REO'D.
PVC TO COPPER ~ BROOKS OR EQUAL COVERS
E ADAPTOR ~ GATE AMND OR SIR CV."
`~' FIN.
IN. r_aer
,ITlil ~ I..I
12"MIN.
II
TO SPRINKLERS
SOLENOID
PEA GRAVEL (TYP
LAYOUT
NOT TO SCALE
GATE VALVE
18"MIN.
MANIFOLD TO
OTHER VALVES
TYPICAL ATMOSPHERIC VACUUM BREAKER -
EMOTE CONTROL VALVE a GATE VALVE INSTL.
CLASS 200 PVC NON PRESSURE LINE
TO SPRINKLERS
(TYP.)
VALVE
IT OF CONNECTION
WATER METER
RCV (TYP.
CLASS 200 PVC OR EQUAL
NON PRESSURE LINE TO-
SPRINKLERS
CL. 315 PVC OR EQUAL
PRESSURE SUPPLY MAIN
A.V.B. LAYOUT
NOT TO SCALE
PRESSURE TYPE
BACKFLOW PREVENTION
UNIT- W/GATES
POINT OF CONNECTION
GATE VALVE
7l~S~'
CL. 315 PVC OR EQUAL
PRESSURE SUPPLY MAIN
REMOTE CONTROL VALVE (TYP.)
P.V.B.. LAYOUT
NOT TO SCALE
TYPICAL A.V.B. & P.V. B
MANIFOLD' INSTALLATION
METER
PRESSURE BACKFLOW PREVENTER
BRASS
CAP NOZ
BRASS NIPPLE•
VALVE
I2°
COPPER NIPPLE
(LENGTH AS REQI
BRASS ELL
BRASS
BRASS UNION
s
BRASS
LENGTH AS REQUIRED)
PVC. ELL
FLOW
~ COPPER SWEAT ELL
.•4 .
'v
.':.:
,:A'~.
o~.o a. ~.':'~~
a.;
a'~':Q
e..
I CU. FT. CONCRETE
THRUST BLOCKS
SECTION
NOT TO SCALE
~~
TYPICAL PRESSURE BACKFLOW PREVENTER
ASSEMBLY
1
FINISH GRADE
e ~Q-•
uO'„ 1
a1J .'1
PRESSURE RELIEF
VALVE (RELIEF
SETTING FOR P.S.I.)
STREET ELL
BRASS NIPPLE
I CU. FT. PEA GRAVEL
• PRESSURE SUPPLY
LINE FITTING
SECTION
NOT TO SCALE
PRESSURE RELIEF VALVE
INSTALLATION
1,
PLASTIC FI1
,,......, ...,...T PLASTIC STREET ELLS
IMPACT HEAD WITH SWING JOINT
IMPACT HEAD
STEEL COUPLING
WALK, DRIVE, WALL ETC.
GALV. STEEL NIPPLE
DOUBLE GALV. WIRE WRAP
TWO WIRE TIES- TWO PLACE°
TEE OR ELL
REBAR
SECTION
NOT TO SCALE
,J~~~' TYPICAL IMPACT HEAD
IMPACT HEAD a
GALV. STEEL ELBOW
LATERAL LINE
TEE OR ELL
FLEX RISER
MALE ADAPT.
BOTH ENDS
MIN. 24"
AS NOTI
AS SITE REQUIRES
FINISH GRADE
I„
12 MIN. LINE FITTING
i ~SXSX(T)
IMPACT HEAD
WALK,DRIVE,
WALL ,ETC.
~Q:-~o
°:..~ a~
GALV.
STEEL-
COUPLING
GALV. STEEL NIPPLE
(SIZE AS REQUIRED)
GALV STEEL E
LATERAL
No. 3 RE. BAR
6
PLAN VIEW
NOT TO SCALE
FLEX-RISER
MALE ADAPTOR AT BOTH ENDS
SECTION
NOT TO SCALE
TYPICAL IMPACT HEAD
~~s~,y ASSEMBLY using flex-risers
9
ERIC VACUUM BREAKER
HAND TURNING UNION
NOZZLE-SPACING BY TYPE
RINGS
GALV. CA
GRADE (`~ 6" IMIN
I/2" GALV. PIPE (TYP.1
O O I~_
' 10' MAXIMUM
SPACING
MANUAL OR REMOTE CONTROL VALVE
PRESSURE SUPPLY LINE
SECTION
NOT TO SCALE
NOTE ATMOSPHERIC VACUUM BREAKER IS NOT NECESSARY WHEN
A PRESSURE VACUUM BREAKER IS USED ON THE UPSTREAM
SIDE OF THE CONTROL VALVE.
DATE:
TYPICAL NOZZLE LINE INSTALLATION
~~s~
HEAD AT TIME OF INSTALLATION
WALK, DRIVE,
WALL ETC.
HEAD AFTER
PLASTIC F
PVC LATERAL
PVC RISER
GRADE
SWING JOINT PLASTIC STREET ELLS
SWING JOINTS NEXT TO WALKS
NOT TO SCALE
HEAD AT
TIME OF INSTALLATION
T ~1- T~ 2~~ MIN.
10
WALK, DRIVE,WALL ETC.
EAD AFTER LOWERING
RISER
PVC. LATERAL PIPE
TYPICAL DETAIL
NOT TO SCALE
~..H.80 PVC
TYPICAL POP-UP LAWN HEAD AND POP-UP LAWN HEAD
7Js6!"' WITH SWING JOINT ASSEMBLY pATE~
10a
LATERAL LINE
TEE OR ELL
P.V.C. SCH. 40 STREET ELBO
GALV. STEEL STREET ELBOW
BRASS STREET ELBOW
SPRINKLER HEAD
PLAN VIEW
NOT TO SCALE
FLEX-RISER
MALE ADAPTOR &
STREET ELBOW
OF HEAD INITIAL INSTALLATION
OF HEAD AFTER LOWERING
DRIVE, WALK,
WALL,ETC.
MIN.
GRADE
4"
0
6
12"
GALV. STEEL E
P.V.C. SCH.40E
BRASS ELBOW
SE
NOT TO SCALE
GALV. STEEL NIPPLE
P.V.C. SCH. 80 NIPPLE
E3RASS NIPPLE
OR ELL
ATERAL LINE
FLEX-RISER0
MALE ADAPTOR d STREET ELBOW
TYPICAL POP-UP (ROTOR OR IMPACT) LAWN HEAD
SWING JOINT ASSEMBLY using flex-risers
,,~Sy ® DATE