HomeMy WebLinkAboutAGENDA REPORT 2002 0515 CC REG ITEM 11GITEM 110 G
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MOORPARK CITY COUNCIL C�
AGENDA REPORT
To: The Honorable City Council
From: Kenneth Gilbert, Director of Public Works
Date: May 3, 2002 (Council Meeting: 5/15/02)
SUBJECT: Consider
1918 and
Standards
Index; 2)
Name Signs
DISCUSSION
in
Background
Resolution Rescinding Resolution No. 2001 -
Adopting Revised Engineering Policies and
to Add Provisions Pertaining to 1) Traffic
Use of Steel Plates; and 3) Advance Street
On December 5, 2001, the City Council adopted Resolution No.
2001 -1918 approving revised Engineering Policies and
Standards.
Proposed Additional Language
1. Pavement Structural Section, Traffic Index & Subsurface
Drainage: Language has been added to set forth design
standards pertaining to the structural cross - section of
asphalt pavement and the installation of sub - drainage
systems for such improvements. These new standards include
the required use of rubberized asphalt. This material not
only diverts vehicle tires from land fills, it is also
superior to non - rubberized asphalt in appearance,
smoothness of ride, coefficients of friction and
durability.
The purpose of these standards is to assure that new
streets are constructed in a manner which adequately
provides for the longevity of those improvements.
2. Temporary Steel Plates Over Street Excavations: Language
has been added pertaining to the temporary use of steel
plates over street excavations. The purpose of this
language is assure that such use meets minimum safety
criteria.
Eng_std_0202
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Engineering Standards
May 3, 2002
Page 2
3. Advance Street Name Signs: Language has been added to
assure that street improvement plans include a requirement
for the installation of advance street name signs, when
such signs are needed.
C. Resolution
Attached as Exhibit 1 is a draft Resolution rescinding
Resolution No. 2001 -1918 and approving a new set of
Engineering Standards and Policies which includes the
addition of "Sections N, 0 and P" pertaining to the matters
discussed above. The proposed "new" language is set forth
below as follows:
"N. PAVEMENT STRUCTURAL SECTION, TRAFFIC INDEX & SUBSURFACE
DRAINAGE: This standard pertains to the design and construction of the
structural section and subdrain systems for public and private streets.
1. Criteria: Except as provided herein, the methods contained in the
Caltrans Design Manual shall be used to design pavement sections and
subsurface drainage for streets. Pavement structural sections for public
streets shall be designed using Equivalent Single Axle Loads (ESAL) for a
50 -year term. Pavement structural sections for private streets shall be
designed using Equivalent Single Axle Loads (ESAL) for a 20 -year term.
The structural section of all public and private streets shall be founded on
well- drained basement soils. The determination of the need for
subsurface drainage systems to prevent saturation of the pavement
structural section or underlying foundation materials shall consider
conditions anticipated throughout the design life of all pavement structural
sections. Subsurface drainage systems shall be marked with detectable
underground utility marking tape buried 6 inches above the pipe. The
ends of the marking tape shall be accessible at each surface feature of the
subsurface drainage system.
2. Standards: Unless calculations to the contrary are approved by the City,
the Traffic Indices shown in table N.2.A shall be used for public streets
and the Traffic Indices shown in table N.2.13 shall be used for private
streets. The wearing surface of all streets shall be 1.5 inches of
rubberized asphalt, which shall not be included when computing the
required structural section. Except as modified herein, the provisions of
the Caltrans "Design Manual" relating to subsurface drainage shall be
implemented in the design of all streets. Subsurface water drainage
systems shall be designed for ease of maintenance, operation and
locatability.
Eng_std_0202
n 02'
Engineering Standards
May 3, 2002
Page 3
3. Implementation: The City Engineer shall require the construction of street
structural sections and subsurface drainage systems to conform to the
design standards herein and the provisions of the Caltrans "Design
Manual ". Construction materials and methods shall conform to the most
recent edition of the "Standard Specification for Public Works
Construction ". Geotechnical and hydrologic investigations to determine
the physical characteristics of the soil and likelihood of subsurface water
that may affect the pavement structural section shall be performed and
documented to the satisfaction of the City Engineer
4. Materials: Except as provided herein, all materials and construction
methods used in the construction of street structural sections, features
and subsurface drainage systems shall conform to the latest edition of the
"Standard Specifications for Public Works Construction ".
Eng_std_0202
a. Pipe used for subsurface drains shall:
1) Be no less than 6 inches in diameter.
2) Be smooth - walled polyvinyl chloride pipe conforming to ASSHTO
M278.
3) Have perforations located in the bottom half of collector pipes.
4) Have belled ends or sleeve or stop -type couplings per AASHTO
M278. Solvent cementing of joints is not required.
5) When used for outlets, terminal risers, vertical and 45- degree
risers, elbows, wyes and tees shall not be perforated.
b. Permeable material used for backfilling trenches under, over and
around subsurface drains shall
1) Consist of hard, durable, clean gravel, or crushed stone
conforming to the quality requirements of table 200- 1.6(B) of the
"Standard Specifications for Public Works Construction ".
2) Be free from organic material, clay balls, or other deleterious
substances.
3) Conform to the gradation requirements of Table N.7.b.
c. When permeable material type is not specified Type B permeable
material shall be used.
d. Filter fabric shall be type 180N.
e. Detectable underground utility marking tape have a minimum 0.13 mm
(0.005') overall thickness, with no less than a 35 gauge (AWG), 0.14
mm aluminum foil core. The foil must be visible from both sides. The
layers shall be laminated together with the extrusion lamination
V v v
Engineering Standards
May 3, 2002
Page 4
process, not adhesives. No inks or printing shall extend to the edges of
the tape. All printing shall be encased to avoid ink rub -off. The color -
coding of the tape shall be green and the legend shall be "SEWER ".
Detectable Underground Utility Marking Tape shall conform to the
properties listed in Tables N.7.d. Detectable Underground Utility
Marking Tape shall meet the requirements of each of the following
agency /association publications.
1) Department of Transportation, Materials Transportation Bureau,
Office of Pipeline Safety. USAS code for pressure piping B31.8,
paragraph 192.321(e).
2) National Transportation Safety Board, Washington, DC, Special
Study Prevention of Damage to Pipelines. Adopted June 7, 1974.
Report NTSB- PSS -73 -1.
3) American Petroleum Institute (API). Recommended practice for
marking buried liquid petroleum pipelines - APR RP 1109.
4) General Services Administration, Washington, DC, Public
Buildings Service Guide Specification for Mechanical and
Electrical Equipment - PBS 4 -1501, Amendment 2, Page 501 -14,
Paragraph 18, Subparagraph 18.1, Clause 18.1.1.
5) Rural Electrification Authority (REA), U.S. Department of
Agriculture, Washington, DC, National Electrical Safety Code for
Underground Construction for remote and immediate hazards.
TABLE N.2.A
Traffic Indices for Public Streets
Roadway Designation
Maximum Build -out
Average Daily Traffic
50 yr
ESAL
T. 1.
B -4 Residential
<10,000
171,375
7.5
B -3D Minor Commercial /Industrial
8,000
270,000
8.0
B -3C Commercial /Industrial
16,000
540,000
8.5
B -313 Major Commercial /Industrial
20,000
540,000
8.5
B -3A Secondary Arterial
20,000
540,000
8.5
B -2 Secondary Arterial
24,000
720,000
9.0
1
B -2 Primary Arterial
36,000
1,217,500
9.5
Eng_std_0202
Engineering Standards
May 3, 2002
Page 5
TABLE N.2.B
Traffic Indices for Private Streets
Roadway Designation
Maximum Build -out
50 -mm 2"
- --
100
Average Daily Traffic
20 yr ESAL
T.I.
B -4 Residential
1,540
35,400
6.0
TABLE N.7.b
PERMEABLE MATERIAL
Sieve Sizes
Percentage Passing
Type A Type B
50 -mm 2"
- --
100
37.5 -mm 11/2"
- --
95 -100
19 -mm 3/4"
100
50 -100
12.5 -mm 1/2"
95 -100
- --
9.5 -mm 3/8"
70 -100
15 -55
4.75 -mm (No. 4)
0 -55
0 -25
2.36 -mm (No. 8)
0 -10
0 -5
75-pm (no. 200)
0 -3
0 -3
TABLE N.7.d
DETECTABLE UNDERGROUND UTILITY MARKING TAPE PROPERTIES
Property
Method
Value
Thickness
ASTM D2103
0114 mm 0.0056"
Tensile strength
ASTM D882
4500g /cm (25 Ibs /inch) (5,500
PSI
Elongation
ASTM D882 -88
<50 percent at break
Printability
ASTM D2578
>50 dynes/square centimeter
Flexibility
ASTM D671 -81
Pliable hand
Inks
Manufacturing specifications
Heat -set M lex
Message repeat
Manufacturing specifications
Every 500 mm 20"
Foil
Manufacturing specifications
Dead soft/annealed
To la er
Manufacturing specifications
Virgin PET
Bottom layer
Manufacturing specifications
Virgin LDPE
Adhesives
Manufacturing specifications
>30 percent, solid 1.5 #/R
Bond strength
Boiling H2O at 100 degrees
Celsius
Five hours without peel
Colors
APWA Code
See Table 207 -25.1 B
Eng_std_0202
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Engineering Standards
May 3, 2002
Page 6
O. USE OF TEMPORARY STEEL PLATES OVER STREET EXCAVATIONS
1. Steel Plate Bridging: With a Non -Skid Surface. This standard covers the
use of steel plate bridging. Persons conducting work within the public
right -of -way shall not use steel plate bridging or trench plate that does not
meet the requirements of this section both in application and circumstance
of use.
2. Requirements for Use: Alternate construction methods that avoid the use
of steel plate bridging shall be used by the persons conducting work within
the public right -of -way unless otherwise approved by the Engineer. It is
recognized that to accommodate excavation work, steel plate bridging
may be necessary. All conditions for use of steel plate bridging set forth in
the requirements of this standard must be fulfilled as conditions of
approval of the use of steel plate bridging. Consideration of the use of
steel plate bridging in the review process will take into account the
following factors:
a. Traffic volume and composition.
b. Duration of use of the steel plate bridging.
c. Size of the proposed excavation.
d. Weather conditions.
3. Plate Score Formula: The following formula shall be used to score the
permitted use of steel plate bridging:
Eng_std_0202
PS= [ADT +EWL +D +10xWE +5xN +20xW +S kmh +Rx100]x L
1000 8
PS= [ADT +EWL +D +10xWE +5xN +20XW +S m h +Rx100]x L
1000 5
where:
PS = plate score.
ADT = average daily traffic as defined in the CALTRANS Traffic
Manual.
• EWL = equivalent wheel loads as defined in the CALTRANS
Traffic Manual.
• D = total number of 24 hour periods during which the plates
will be utilized at the site being considered.
• WE = total number of Saturdays, Sundays and holidays that the
plates will be utilized at the site being considered.
• N = total number of overnight periods that the plates will be in
place, exclusive of Saturday, Sunday and holiday nights.
n n. n rj+
Engineering Standards
May 3, 2002
Page 7
W = total number of 24 -hour periods that the plates will be
utilized at the site being considered when the possibility of rain
exceeds 40 percent.
• S = the design speed in kilometers per hour or miles per
hour, as applicable in the formulae above, of the street where the
plates are to be installed. This number shall not be reduced for
construction zone speed reductions.
• R = the quotient of the vertical differential divided by the
horizontal distance. The vertical and horizontal dimensions shall be
measured at the locations spanning a distance of 15 m (50') up and
downstream of the position of the proposed steel plate bridging.
• L = the number of lanes where plates will be used.
4. Plate Score Use: When the computed value of the plate score exceeds
50, steel plate bridging shall not be used unless, and at the sole discretion
of the City Engineer, it is determined that no alternative method of
construction is possible in lieu of using steel plate bridging or that other
overriding considerations make the use of steel plate bridging acceptable.
Alternatives considered to bridging shall include, but not be limited to,
detouring traffic, construction detour routes, tunneling, boring and other
methods of trenchless construction. Unless specifically noted in the
provisions of the City Engineer's approval, the use of steel plate bridging
at each location so approved shall not exceed four (4) consecutive
working days in any given week.
5. Additional Requirements: In all cases when the depth of the trench
exceeds the width of the steel plate bridging resting on each side of the
pavement adjacent to the trench, safety regulations require or the City
Engineer determines that shoring is necessary to protect the health or
safety of workers or the public. The persons conduction work within the
public way shall install shoring conforming to Section 7- 10.4.1 of the
Standard Specifications for Public Works Construction ( SSPWC). The
trench shoring shall be designed and installed to support the steel plate
bridging and traffic loads. All approvals for design, substitution of
materials or methods shall be submitted by the persons conduction work
within the public way in accordance with all provisions of section 2 -5.3
SSPWC Shop Drawings and Submittals. The Contractor shall backfill and
resurface excavations in accordance with section 306 -1.5 SSPWC.
6. Installation: When backfilling operations of an excavation in the traveled
way, whether transverse or longitudinal cannot be properly completed
within a work day, steel plate bridging with a non -skid surface and shoring
may be required to preserve unobstructed traffic flow. In such cases, the
following conditions shall apply:
Eng_std_0202
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Engineering Standards
May 3, 2002
Page 8
a. Steel plate bridging when the plate score exceeds 50 is not allowed
except when, at the sole discretion of the City Engineer, it is approved
as specified above.
b. Steel plates used for bridging must extend no less than 610 mm (2')
beyond the edges of the trench.
c. Steel plate bridging shall be installed and maintained to operate with a
noise level such that no sound generated by the steel plate can be
heard by a person with normal hearing acuity from a distance of 15
meters (50').
d. No longitudinal trench excavation longer than 15 meters (50') shall be
covered with steel plates.
7. Installation Methods: When the use of steel plate bridging and shoring is
approved by the City Engineer, the persons conducting work within the
public right -of -way shall install using either Method (1) or (2) depending on
the design speed of the portion of street where the steel plate bridging is
proposed for use.
a. Method 1 For speeds equal to or more than 56 Km /hr (35 MPH)]: The
pavement shall be cold planed to a depth equal to the thickness of the
plate and to a width and length equal to the dimensions of the plate.
The cold milling shall produce a flat surface that the plate shall rest on
with no horizontal or vertical movement. Horizontal gaps between the
unmilled pavement and the plate shall not exceed 25 mm (1 ") and shall
be filled with elastomeric sealant material which may, at the
contractor's option, be mixed with no more that 50 %, by volume, of
Type I aggregate conforming to the requirements of tables 203- 5.2(B)
and 203- 5.3(A) SSPWC .
b. Method 2 [For speeds less than 56 Km /hr (35 MPH)]: Approach
plate(s) and ending plate (if longitudinal placement) shall be attached
to the roadway and shall be secured against displacement by using
two adjustable cleats that are no more than 50 mm (2 ") shorter than
the width of the trench. The cleats shall be bolted to the underside of
each plate and located within 150 mm (6 ") of the beginning and end of
the trench for plates at the beginning and end of the trench. A
minimum of two 300 mm long by 19 mm diameter (12" x3/4") steel bolts
shall be placed through the plate and driven into holes drilled 300 mm
(12 ") into the pavement section, or other devices approved by the City
Engineer. Subsequent plates shall be butted and tack welded to each
other along 10% of the butted faces. Fine graded asphalt concrete
shall be compacted to form ramps, maximum slope 8.5% with a
minimum 300 mm (12 ") taper to cover all edges of the steel plates.
When steel plates are removed, the dowel holes in the pavement
section shall be completely filled with elastomeric sealant material. At
the Contractor's option, the methods required for Method 1 may be
Eng_std_0202
Engineering Standards
May 3, 2002
Page 9
used. If the use of Method 1 is elected, all requirements of Method 1
shall be used. The Contractor shall maintain the steel plates, shoring,
and asphalt concrete ramps and maintain and restore the street
surface during and after their use.
8. Materials: The minimum thickness of steel plate bridging shall be as
shown in Table 0.7
TABLE 0.7
REQUIRED PLATE THICKNESS FOR A GIVEN TRENCH WIDTH
Maximum Trench Width 1
Minimum Plate Thickness
0.3 m
10"
13 mm
(1/2")
0.6 m
23"
19 mm
3/4"
0.8 m
31 "
22 mm
7/8"
1.0 m
41"
25 mm
1"
1.6 m
63"
32 mm
1 '/4"
9. Longer Spans: For spans greater than 1.6 m (6), a structural design shall
be prepared by a registered civil engineer and submitted to the City
Engineer for review and approval in accordance with section 2 -5.3
SSPWC of the Standard Specifications for Public Works Construction.
10. Design Criteria: Steel plate bridging shall be steel plate designed to
support the HS20 -44 truck loading per CALTRANS Bridge Design
Specifications Manual. The Contractor use steel plate with a non -skid
surface having no less than a coefficient of friction of 0.35 as determined
by California Test Method 342. In addition to all other required
construction signing, the Contractor shall install Rough Road (W33) sign
with black lettering on an orange background in advance of steel plate
bridging.
P. ADVANCE STREET NAME SIGNS:
1. Requirement: All signing and striping plans shall include requirements for
the installation of advance street name signs, consistent with the
requirements set forth herein.
2. Purpose: The purpose for such signs is to provide advance notice of the
name of the streets the driver is approaching.
Eng_std_0202
Engineering Standards
May 3, 2002
Page 10
3. Location / Design: The location and design of all advance street name
signs shall be determined by the City Engineer and shall be approved by
the Director of Community Development and, if the sign is to be placed in
a landscaped parkway or median to be maintained by the City, the
Director of Community Services .
4. Monument Signs: A monument sign shall be used whenever possible.
Pole signs may be used when the City Engineer determines that the use
of a monument sign is inappropriate for a given application.
5. Medians: On streets with raised / landscaped medians, the preferred
location for the sign is in the median.
6. Signalized Intersections: Advance street name signs shall not be required
for signalized intersections which have overhead internally illuminated
street name signs. "
STAFF RECOMMENDATION
Adopt Resolution No 2002-
Attachments:
Exhibit 1: Resolution
Eng_std_0202
In ; t> . f L
RESOLUTION NO. 2002 -
A RESOLUTION OF THE CITY COUNCIL OF THE CITY
OF MOORPARK, CALIFORNIA, RESCINDING RESOLUTION
NO. 2001 -1918 AND ADOPTING REVISED ENGINEERING
POLICIES AND STANDARDS ADDING PROVISIONS
PERTAINING TO TRAFFIC INDEX
WHEREAS, on December 5, 2001, the City Council adopted
Resolution No. 2001 -1918, adopting revised Engineering Policies
and Standards; and
WHEREAS, the City Council now wishes to amend the Engineering
Polices and Standards of the City.
NOW, THEREFORE, THE CITY COUNCIL OF THE CITY OF MOORPARK DOES
HEREBY RESOLVE AS FOLLOWS:
SECTION 1. Resolution No. 2001 -1918 is hereby rescinded.
SECTION 2. Any prior Resolution, or part thereof, rescinded
and deleted by Resolution No. 2001 -1918 shall remain rescinded
and deleted.
SECTION 3. A new set of Engineering Policies and Standards,
including provisions related to Traffic Index Standards, are
hereby approved and adopted, said Policies and Standards being
set forth in Exhibit 'A' attached hereto and made a part hereof.
SECTION 4. The City Clerk shall certify to the adoption of
this resolution and shall cause a certified resolution to be filed
in the book of original resolutions.
PASSED AND ADOPTED this day of , 2002.
ATTEST: Patrick Hunter, Mayor
Deborah S. Traffenstedt, City Clerk
Attachments:
Exhibit 'A': Engineering Policies and Standards
C 4 ,n r't
Resolution No. 2002 -
Exhibit 'A' [Page 11
Date: May 3, 2002
Engineering Policies and Standards
Table of Contents
Section
A Placement of Above Ground Structures in the Sidewalk
B Public Notification of Street Projects
C Grading
D Utility Trench Backfill Requirements
E Size of Speed Limit Signs
F Traffic Control Plans
G Street Improvements on a State Highway
H Repair of Damaged Sidewalks, Curbs and Gutters
I Rear Yard Access Through Block Walls
J Street Improvement Plans: U -Turns
K Second Driveways
L Placement of Banners on Street Light Poles
M Slough Walls
N Pavement Structural Section, Traffic Index & Subsurface
Drainage
O Temporary Steel Plates Over Street Excavations
P Advance Street Name Signs
Page
2
2
3
10
10
10
10
11
11
12
13
13
14
15
18
22
Resolution No. 2002 -
Exhibit 'A' [Page 2]
Date: May 3, 2002
A. PLACEMENT OF ABOVE GROUND STRUCTURES IN THE SIDEWALK:
The following guidelines shall be followed in determining the location of
above ground structures in the sidewalk. Such structures include, but are not
limited to, facilities owned by the City, any utility company or district, and the
U.S. Postal Service. The location of such structures should be consistent
with these guidelines unless unique circumstances require other action. In
any case, the placement of such structures shall be consistent with minimum
requirements for handicap access.
1. Whenever possible, traffic control signs should be placed on street light
poles instead of separate sign poles.
2. Sidewalks having widths greater than five feet (6) and sidewalks with
parkways:
a. All signs, poles, mailboxes, etc. should be placed behind the curb with
the minimum setback.
b. Fire hydrants shall be placed five feet (5') from the curb face.
3. Sidewalks having a width of five feet (6) or less:
a. All stop signs, yield signs, turn prohibition signs, large guide signs,
traffic signal poles and similar traffic signs shall be placed behind the
curb with the minimum setback.
b. Except as noted in Item #1 above, all other traffic control and traffic
warning signs shall be placed behind the sidewalk, provided adequate
visibility is maintained. Parking restriction signs placed behind the
sidewalk may require placement at shorter intervals.
c. Mailboxes may be placed behind the curb with the minimum setback,
provided additional sidewalk width is constructed sufficient to provide a
sidewalk width consistent with the width of the sidewalk adjacent to the
mailbox.
d. All other facilities shall be placed behind the sidewalk.
B. PUBLIC NOTIFICATION OF STREET PROJECTS: When deemed
necessary and appropriate, City staff shall provide those affected with written
notice of the City's intent to construct a street improvement project. Such
notice shall only be given when and if the City Engineer and /or Public Works
Director determine that a given project could adversely impact certain
properties. When given, such notice shall be mailed to the owners and /or
residents of properties which could be adversely affected by the project. Any
such notice shall be mailed at least ten (10) days prior to the date the City
Council is scheduled to consider the approval of the plans and specifications
for such project and /or authorization to advertise for receipt of bids for the
construction of such project.
C ., .,
Resolution No. 2002 -
Exhibit 'A' [Page 31
Date: May 3, 2002
C. GRADING: The following guidelines shall be followed by the City Engineering
Department in the review and approval of grading plans and the
administration of grading operations:
1. Conceptual Grading Plans: On all tentative tract maps, parcel maps, and
applications for land development where grading quantities will be equal to
or greater than fifty cubic yards (50 cu. yds.), obstruct a drainage course
or impact another property owner's property, a conceptual grading plan
shall be a part of the submittal to the City. The conceptual grading plan
shall show pad elevations, tops and toes of slopes and walls, borrow and
fill quantities, and the general drainage pattern. The location of any
anticipated siltation, retention or debris basins shall be shown. As a
condition of approval, surety shall be provided for the full cost of the
grading operations.
On projects where the grading quantities do not exceed twenty thousand
cubic yards (20,000 cu. yds.) and where all grading is in an isolated self
contained area (such as agricultural land) and where the actual limits of
proposed grading will have a significant buffer from and have no drainage
impact to adjacent properties, and the grading creates no adverse
aesthetic impacts to views or hillsides, the City Engineer in consultation
with the Director of Community Development after review of a plot plan
and supporting information concerning drainage and buffer areas, may
determine that a grading plan is unnecessary.
2. Contour Grading:
a. Findings: The Council hereby finds that the terrain of certain areas of
the City provides a unique and substantial character to the area and
forms an integral part of the City's total environment. Due to their
physical dominance on the City's landscape, development of the
hillside areas will definitely affect the visual and environmental
character of the community. The City's primary objective regarding
hillside development is to preserve the natural terrain and aesthetic
character of the City while encouraging creative, innovative, and safe
residential development with a variety of housing types. Such
characteristics will only be achieved when special consideration is
given to those developments, subdivisions, and lot splits within hillside
areas, on an individual basis and proper consideration of the variations
in conditions, design criteria, and other factors. All contour grading
shall be in conformance with the requirements of Chapter 17.38
Hillside Management of the Moorpark Municipal Code.
b. Slope Design Standards: Where the creation of cut and fill slopes is
approved, they shall be rounded at the edges and contoured as
V v L
Resolution No. 2002 -
Exhibit 'A' [Page 4]
Date: May 3, 2002
necessary to blend with existing topography. All cut and fill slopes shall
conform to the following standards:
1) All cut and fill slopes in excess of five feet (5') vertical height shall
be rounded with vertical curves from the crest of the slope and from
any surface drains constructed on the face or top of the slope and
must keep concentrated water from roofs, drives or pads from
going over slopes or onto adjacent properties;
2) Where cut or fill slopes intersect the ends of each graded slope, the
slope shall be horizontally rounded and blended with a minimum
radius of twenty -five feet (25'). A smaller radius may be permissible
for short slope lengths;
3) Where a cut or fill slope intersects a natural slope, the horizontal
contours of the slope shall be curved so as to blend with the natural
slope;
4) Where any cut or fill slope exceeds seventy feet (27') in horizontal
length, the horizontal contours of the slope shall be curved in a
continuous undulating fashion with radii no greater than three
hundred feet (300') nor less than twenty feet (20');
5) Slope rounding shall be designed in proportion to the total height of
the slope. The top and toe of each slope in excess of ten feet (10')
height, excepting the toe of any slope within twenty -five feet (25') of
a dwelling, shall be vertically rounded with radii equal to one -fifth of
the height of the slope and no less than five feet (6). This shall not
apply to the toe of any cut slope that is supported by a retaining
wall;
6) All engineered slopes shall be contour graded to achieve a natural
appearance. Borders of cut slopes and fills are to be rounded to
blend with the existing terrain;
7) Road and utility construction will not be approved until improvement
plans have been approved for the area in accordance with
discretionary approvals and City standards; and
8) Slope height shall be measured to the intersection of the slant of
the slope with existing ground before rounding.
c. Architectural Treatment: Architectural innovation shall be utilized rather
than extensive grading so that the natural landform is disturbed to the
least extent possible.
d. Development Area Interfaces: Where approved by the Planning
Commission or City Council, the slope grading requirements may be
applied to limited portions of an adjacent zone to permit the extension
or transition of a logical design concept. These requirements do not
preclude satisfying requirements for slope benching, drainage facilities,
and maintenance access or fire apparatus access roads.
Resolution No. 2002 -
Exhibit 'A' [Page 5]
Date: May 3, 2002
e. Development Guidelines for Natural Slopes: Areas within the following
ranges of natural (pre - development) slope percentages shall be
developed in accordance with the following criteria:
1) The "Percent Natural Slope" on a site will be calculated as the
average gradient of the entire site as determined by the elevation
differentials measured orthographically between each node of a
north -south and east -west one hundred foot interval grid extending
over the entire developed portion of the project site.
2) Areas having an average slope of less than ten percent (10 %) [10'
horizontal to 1' vertical) are not a hillside condition. Mass grading
with conventional fully padded lots and terracing are acceptable.
3) Areas having an average slope of between ten percent (10 %) [10'
horizontal to 1' vertical] and nineteen and nine -tenth percent
(19.9 %) [5' horizontal to 1' vertical]: Mass grading may occur in
this slope zone. Existing landforms must retain their natural
character. Padded building sites are permitted on these slopes, but
split -level architectural structures with stacking and clustering are
preferred. A cut and fill map is required to verify maximum heights
of cut and fill.
4) Areas having an average slope of between twenty percent (20 %)
[5' horizontal to 1' vertical] and thirty -three percent (33 %)
[3' horizontal to 1' vertical]: Special hillside architectural and design
techniques are required within this slope zone. Architectural
designs are to conform to the natural landform. Mass grading is
discouraged except on a case -by -case basis as permitted by the
Planning Commission. Mass grading is particularly discouraged
where development is proposed within a high -risk landslide area.
This does not preclude grading necessary to mitigate slide hazards.
A cut and fill map is required to verify maximum heights of cut and
fill.
5) A Conditional Use permit is required for grading on areas having an
average slope of thirty -four percent (34 %) or more [greater than 3'
horizontal to 1' vertical). Approval of any Conditional Use permit for
development within this slope zone is contingent that the Planning
Commission make findings that such grading and development:
a) Has been clearly demonstrated to minimize safety,
environmental and aesthetic impacts.
b) Includes the minimum amount of grading.
c) Includes the grading necessary to mitigate slope instability or
slide hazards that may exist on the site.
d) Has had thorough geotechnical investigation.
e) Has had a detailed grading plan prepared as well as a cut and
fill exhibit that shows maximum heights of cut and fill.
f) Will require no import or export of soils.
ela. —�..
Resolution No. 2002 -
Exhibit 'A' [Page 6]
Date: May 3, 2002
3. Import/Export: On all required conceptual grading plans where the total
on -site borrow and fill yardages differ by one thousand cubic yards (1,000
cu. yds.) or more, plans for handling the import/export shall be part of the
conceptual grading plan.
a. The import/export plan shall show quantity of import/export, location of
borrow /stockpile sites, temporary and final grading of the site, height of
fill /depth of cut, visibility of the site from public roads and lands,
vegetation and screening for sites located within the City of Moorpark.
b. Unanticipated off -site import/export operations requiring an excess of
one thousand (1,000) total truck loads or ten thousand cubic yards
(10,000 cu. yds.), whichever is less, shall require Council approval
prior to the commencement of hauling or staged grading operations. A
haul route shall be submitted to the City Council for review and
approval.
c. If the borrow /fill site(s) are within the City limits, a grading plan for such
sites, showing the before and after condition, shall also be shown.
4. Stockpiles: The temporary placement of soil on any property prior to its
placement as imported certified fill (herein "Stockpile "), shall comply with
the following requirements:
a. Design: All Stockpile shall:
1) not exceed five feet (5') in height;
2) have side slopes which do not exceed 3:1
b. Approval:
1) Development Entitlement: For any property having an approved
development entitlement (CPD, IPD, RPD), requests for placement
of a Stockpile are to be reviewed and conditionally approved, or
denied, by the City Engineer and the Director of Community
Development as a discretionary action. The conditions and
requirements for any approval of a Stockpile shall be consistent
with an approved grading plan for the property and the conditions of
approval for the development entitlement. Such approval shall also
require the deposit of adequate and appropriate bonds to
guarantee the removal of the Stockpile within the prescribed time
limits of subsection 4c. In addition, the City Engineer and the
Director of Community Development shall require appropriate
conditions relative to the placement and maintenance of the
Stockpile, including but not limited to:
a) distance and screening from public rights -of -way and adjacent
properties, with fencing or landscaping as determined
necessary;
b) erosion control;
c) weed abatement;
n nn,�
�v ,, J
Resolution No. 2002 -
Exhibit 'A' [Page 7]
Date: May 3, 2002
d) construction of public improvements as required by the
conditions of approval of the development entitlement, if said
public improvements are determined to be needed at the time
the Stockpile approval is requested; and,
e) payment of applicable fees for processing of the request for the
placement of the Stockpile(s).
The quantity of soil for any approved Stockpile(s) being placed
upon any such approved property or project, shall not exceed 5,000
cubic yards per acre, unless prior approval of a greater amount is
granted by the City Council.
2) All Other Properties: For any property which has not been granted
a development entitlement (including any property located within
any One Hundred (100) Year Flood Boundary as shown on the
current Flood Insurance Rate Map [FIRM]), requests for a Stockpile
shall require approval by the City Council. Any application for such
approval shall be accompanied by an adequate and appropriate
Environmental Document assessing and addressing any potential
environmental impacts associated with the placement and removal
of the Stockpile. Such application shall be accompanied by
appropriate conditions of approval as recommended by the City
Engineer, including a requirement for the deposit of bonds to
guarantee the removal of the Stockpile site(s) if deemed necessary.
c. Duration: The duration of the placement of a Stockpile shall not
exceed the following time limits:
1) Development Entitlements: For any property having an approved
development entitlement, the duration of the placement of any
Stockpile shall not exceed the time limits specified in said
entitlement or two years whichever is less.
2) All Other Properties: For any other Stockpile approved by the City
Council [see subsection 4.b.2], the duration of the placement of any
Stockpile shall not exceed the time limits set forth in the conditions
of approval as determined by the City Council.
5. Haul Routes: On all required conceptual grading plans that require
import/export of more than one hundred (100) truckloads or one thousand
cubic yards (1,000 cu. yds.), whichever is less, the following information
shall be made a part of the conceptual grading plan: haul routes, hours of
hauling, numbers and frequency of trucks and other information necessary
to define hauling impacts. Additional surety for the cleaning and /or repair
of streets used as haul routes may be required as determined by the City
Engineer.
C
Resolution No. 2002 -
Exhibit 'A' [Page 8]
Date: May 3, 2002
6. Director of Community Development Review: On all grading plans, the
Director of Community Development shall provide comment to the City
Engineer concerning: contour grading, aesthetics, viewshed and
consistency with the Hillside Management Ordinance where applicable
and Moorpark General Plan. With said comments, the City Engineer shall
develop and provide to the Director of Community Development,
appropriate recommendations relative to those matters plus slope stability,
drainage, erosion protection and related issues, before approval of any
conceptual or final grading plan.
7. Final Grading Plan: The final grading plan shall be in substantial
compliance with the approved conceptual grading plan. The City Engineer
and the Director of Community Development shall make the determination
as to substantial compliance with the approved conceptual grading plan.
The City Engineer may administratively approve minor changes from the
conceptual grading plan. Minor changes are defined as:
a. changes in elevation of five (5) feet or less from the conceptual plan;
b. changes in total borrow /fill quantities which do not exceed one
thousand cubic yards (1,000 yd3);
c. additional import/export quantities not exceeding one thousand cubic
yards (1,000 yd3);
d. changes which cause no adverse impacts to slope stability, drainage,
and erosion control; and,
e. changes which, in the view of the Director of Community Development,
do not result in any adverse impact on aesthetics or viewshed.
If the City Engineer finds that the final grading plan is not in substantial
conformance with the approved conceptual grading plan, the City
Engineer shall submit a report with recommendations to the City Council.
The City Engineer shall not issue a grading permit for those final grading
plans that are not in substantial conformance with the conceptual grading
plan without approval of the City Council.
8. Erosion Control: Concurrent with submittal of the final grading plan, an
erosion control plan shall be submitted for review and approval by the City
Engineer. The design shall include measures for erosion control to be
implemented on all graded areas. These measures shall apply to
temporary grading activity that remains or is anticipated to remain
unfinished or undisturbed in its altered condition for a period of time
greater than thirty (30) days or for a period of time which extends into the
wet season defined as that period between October 15th of a given year
and April 15th of the following year.
Resolution No. 2002 -
Exhibit 'A' [Page 9]
Date: May 3, 2002
9. National Pollution Discharge Elimination System ( NPDES): As part of
each final grading plan, NPDES regulations shall be addressed to the
satisfaction of the City Engineer. As a minimum the following shall be
included:
a. A Stormwater Pollution Control Plan (SWPCP) shall be developed and
implemented in accordance with requirements of the Ventura
Countywide Stormwater Quality Management Program, NPDES Permit
No. CAS063339.
b. The project construction plans shall incorporate Best Management
Practices (BMPs) applicable to the development for the review and
approval of the City Engineer.
If the site is 5 acres or more in size, the following items shall also be
included:
c. A permit shall be obtained from the State Water Resources Control
Board. A Notice of Intent (NOI) shall be submitted to the City Engineer
and to the California State Water Resources Control Board, Storm
Water Permit Unit in accordance with the NPDES Construction
General Permit No. CASO00002.
d. A Stormwater Pollution Prevention Plan (SWPPP) shall be prepared
and approved by the City Engineer consistent with the requirements of
the City's Stormwater Quality standards and regulations.
10. Dust Control: Dust control measures shall be identified to the satisfaction
of the City Engineer. These measures shall include, but not be limited to,
minimization of ground disturbance, application of water /chemicals,
temporary/permanent ground cover /seeding, street sweeping, and
covering loads of dirt.
All clearing, grading, earth moving, or excavation operations shall cease
during periods of high winds (greater than 15 mph averaged over one
hour).
11. Field Changes: During grading operations, changes to the approved final
grading plan may be authorized by the City Engineer, when such changes
are in conformance with the approved Final Grading Plan and result in an
"equal to" or "improved" final graded condition, provided the Director of
Community Development concurs that the changes do not result in any
adverse impact to aesthetics or viewshed within or adjacent to the graded
area.
Resolution No. 2002 -
Exhibit 'A' [Page 10]
Date: May 3, 2002
D. UTILITY TRENCH BACKFILL REQUIREMENTS: The following guidelines
shall be followed by the City Engineering Department in the review and
approval of plans and the inspection of work related to the backfill and
compaction of utility trenches:
1. Except as noted below, all utility trenches within any street right -of -way or
easement shall be backfilled from the top of the pipe zone to the bottom
of the pavement structural section with a one sack cement and sand slurry
mix. A maximum of one percent (11%) of calcium chloride may be added
when a faster cure is required.
2. All utility trenches within a parkway, median or sidewalk area shall be
backfilled from the top of the pipe zone to a point one foot (1') below the
finished grade.
3. Upon written request to the City Engineer this requirement may be waived
for specific special conditions such as excessively wide or deep (in excess
of eight feet) trenches.
E. SIZE OF SPEED LIMIT SIGNS: The following guidelines shall be followed in
determining the size of Speed Limit signs:
Less than 45 MPH: 24" x 36 ";
45 MPH or more: 36" x 45 ".
The City Engineer or Director of Public Works may determine that a different
size of speed limit sign may be warranted or may be more suitable at certain
locations.
F. TRAFFIC CONTROL PLAN: Where streets are to be dedicated to the City in
conjunction with the recordation of a final map, a regulatory traffic signing and
striping plan shall be submitted to, and approved by the City Council, along
with City Council review and approval of the final map. The traffic signing and
striping plan shall show, as a minimum, all proposed regulatory signing and
striping, such as stop signs, speed limit signs and parking restriction signs.
G. STREET IMPROVEMENTS ON A STATE HIGHWAY: The construction of
street improvements on a State Highway by a private developer, may require
the City to act in the role of facilitator. To that end the City Engineer and /or
the Public Works Director are authorized to take certain actions as follows:
1. Sign Caltrans Encroachment Permit Applications, if required, provided the
developer provides the City with appropriate hold harmless
indemnification.
2. Take all steps necessary and appropriate to provide for City acceptance of
additional street right -of -way and /or easements within and /or adjacent to a
State Highway.
Resolution No. 2002 -
Exhibit 'A' [Page 11]
Date: May 3, 2002
3. Take all steps necessary and appropriate to convey such additional street
right -of -way, easements and improvements to Caltrans upon completion
and acceptance of said improvements.
H. REPAIR OF DAMAGED SIDEWALKS, CURBS AND GUTTERS: The
responsibility for undertaking the repair of damaged sidewalks, curbs and
gutters, shall be as follows:
Damage Caused by: Responsible Party
1 Street trees or other landscaping located within City
a parkway maintained by the City.
2 Street trees or other landscaping located within HOA
a parkway maintained by a Home Owners'
Association.
3 Street trees or other landscaping within a City
Parkway located within the street right -of -way or
a City -owned landscape easement adjacent
thereto.
4 Trees or other landscaping located on private
property:
First Repair: City
Subsequent Repairs: Owner of the
property fronting
the damage
5 Any activity of the owner of the property fronting Owner of the
the damage, including an agent of the owner property fronting
(e.g. renter, contractor, etc.) the damage
REAR YARD ACCESS THROUGH BLOCK WALLS: In order to maintain and
preserve the structural integrity and the aesthetic quality of Perimeter Walls
throughout the City, such walls shall not be altered or removed and
reconstructed to provide temporary access to a work site, unless a Wall
Access Permit is issued in accordance with the requirements set forth herein.
1. Building Permits: Identification of Work Access: The plot plan attached to
any building permit issued for the construction of improvements or
modifications to any property, shall identify, on the plot plan, the method or
location of the access to the work site.
C ., S
� A �
Resolution No. 2002 -
Exhibit 'A' [Page 121
Date: May 3, 2002
2. Prohibited Access: Any requested access which requires the removal and
reconstruction of a wall located along a rear of side property line shared
with any street, SHALL NOT BE APPROVED.
3. Exceptions: Wall Access Permit: A Perimeter Wall Access Permit may be
issued by the City Engineer, when and if the contractor or property owner
can adequately demonstrate that it is not possible to construct the desired
improvements or modifications without the removal and reconstruction of
the Perimeter Wall in order to gain rear access to the property.
Exemptions (Wall Access Permit) shall not be granted for the purpose of
facilitating the work (i.e. avoid damage to existing landscaping, make the
project easier, reduce the cost of the project, etc.). Exemptions may only
be granted when there is no way to construct the project without access
through the wall. Prior to the approval of any Wall Access Permit, a
representative of the City Engineer shall visit the site to confirm that
access to the work site is not possible without the removal and
reconstruction of a perimeter wall.
4. Conditions of Approval: Any Wall Access Permit issued by the City
Engineer shall include Conditions of Approval designed to assure that the
wall is restored to its "pre- project" condition. Such Conditions may include
any of the following:
a) a block wall restoration plan shall be provided;
b) block samples shall be provided to the City prior to the approval of the
Permit, to assure that the "match" between the existing block wall and
the new block is adequate;
c) all approved block shall be procured and delivered to the site prior to
the issuance of the final permit and the commencement of
construction, in order to assure that the final block material "matches"
the approved sample [Note: a conditional permit may be issued setting
forth all requirements and advising of the City's intent to issue a Wall
Access Permit upon delivery and approval of the block material].
d) [if new block does not adequately match the existing wall] the
restoration plan shall provide for the removal and reconstruction of the
block wall for an entire wall section (pilaster to pilaster).
J. STREET IMPROVEMENT PLANS: U- TURNS: During the review and
approval of the Tentative Tract Map and /or the review and plan checking of
street improvements plans for the development of proposed new arterial
streets, consideration shall be given to the geometirc design for proposed
new intersections; and, unless conditions preclude such installation, the final
design shall adequately provide for "U- Turn" traffic movements at such
intersections. In the event the City Engineer finds that conditions exist which
Cv �. <� �•
Resolution No. 2002 -
Exhibit 'A' [Page 13]
Date: May 3, 2002
preclude the need or necessity to provide for "U- Turn" traffic movements, the
City Engineer shall prepare a report to the City Manager setting forth the
reasons why such provisions should not be included in the final design, prior
to making a final determination.
K. SECOND DRIVEWAYS: Street Encroachment Permits for the construction of
a second driveway on a residential lot, shall not be approved unless and until
the applicant has obtained a Zone Clearance approved by the Director of
Community Development. Such approval shall be consistent with the
requirements of the Moorpark Municipal Code [Section 17.32.011].
L. PLACEMENT OF BANNERS ON STREET LIGHT POLES
This policy shall govern the placement of vertical banners on light poles
owned by Southern California Edison during City- sponsored or City Co-
sponsored community events such as Country Days, Independence Day
Celebrations or similar events with a maximum of two events per year with no
overlap permitted. Requests to place banners will be considered only for 60 -
day time periods prior to and during said City Sponsored or Co- sponsored
events. Requests will be considered only from Moorpark based, non -profit
groups recognized as religious, educational, civic or cultural. Such requests
will be considered pursuant to the following criteria and subject to the City's
License Agreement with Southern California Edison.
1. One million dollar insurance coverage must be provided by the applicant
organization, with such insurance subject to approval by the City Risk
Manager.
2. Applicant organizations are required to execute a defense, indemnity and
hold harmless agreement with the City on a form prescribed by the City.
3. Applicant organizations are responsible for all labor (including installation,
maintenance, and removal) of the banners and attaching hardware, as
well as any claims arising out of their use.
4. Applicant organization must obtain an encroachment permit and sign
permit from the City.
5. All requests must be received 60 days in advance of the proposed date for
placement of banners.
6. Banners may be in place no longer than 60 days. Only one organization
shall have banners in place for any such period.
C^^.� ^�
%.0 %.# J
Resolution No. 2002 -
Exhibit 'A' [Page 14]
Date: May 3, 2002
7. Banners may contain only the following:
a. Logo or identification of the event to be promoted.
b. One sponsorship on each side of the banner
c. If an individual or family is the sponsor only the family name may
appear on the banner.
d. Sponsorship of a banner is restricted by the following:
• Banners may be sponsored only by City of Moorpark
businesses /organizations and residents.
• Banners are not to display product symbols, product names, phone
numbers or addresses.
Banners are not to include name -brand advertising.
Banners are not to include any political statements or sponsorship
(i.e., no elected officials or officials appointed to an elected office,
official candidates, candidate /ballot measure committees, etc.).
8. Requests for the placement of such banners must be accompanied by a
sample or rendering of the proposed banner and indicate the size and
shape. A sample of the material and colors of the proposed banners must
be submitted at the time of application.
9. All requests will be administered by the City Manager or his /her designee
whose decision will be final.
M. SLOUGH WALLS:
1. Criteria: Slough Walls shall be required at the back of the sidewalk when
there is a slope of more than four feet (4') in height, immediately adjacent
to the sidewalk. Slough Walls shall not be required if there is an area at
least five feet (6) wide between the back of sidewalk and the toe of slope.
2. Standards: The City Engineer shall develop and maintain a set of design
standards and specifications for the construction of Slough Walls.
3. Implementation: The City Engineer shall require the construction of Slough
Walls, in a manner consistent with current design standards and
specifications, when ever the above criteria exist.
4. Materials: the materials used for the construction of the slough walls shall
be approved by the City Engineer and the Director of Community
Development.
C n n'9 �.R
vr. - -_1 —
Resolution No. 2002 -
Exhibit 'A' [Page 15]
Date: May 3, 2002
N. PAVEMENT STRUCTURAL SECTION, TRAFFIC INDEX & SUBSURFACE
DRAINAGE: This standard pertains to the design and construction of the
structural section and subdrain systems for public and private streets.
1. Criteria: Except as provided herein, the methods contained in the
Caltrans Design Manual shall be used to design pavement sections and
subsurface drainage for streets. Pavement structural sections for public
streets shall be designed using Equivalent Single Axle Loads (ESAL) for a
50 -year term. Pavement structural sections for private streets shall be
designed using Equivalent Single Axle Loads (ESAL) for a 20 -year term.
The structural section of all public and private streets shall be founded on
well- drained basement soils. The determination of the need for
subsurface drainage systems to prevent saturation of the pavement
structural section or underlying foundation materials shall consider
conditions anticipated throughout the design life of all pavement structural
sections. Subsurface drainage systems shall be marked with detectable
underground utility marking tape buried 6 inches above the pipe. The
ends of the marking tape shall be accessible at each surface feature of the
subsurface drainage system.
2. Standards: Unless calculations to the contrary are approved by the City,
the Traffic Indices shown in table N.2.A shall be used for public streets
and the Traffic Indices shown in table N.2.B shall be used for private
streets. The wearing surface of all streets shall be 1.5 inches of
rubberized asphalt, which shall not be included when computing the
required structural section. Except as modified herein, the provisions of
the Caltrans "Design Manual" relating to subsurface drainage shall be
implemented in the design of all streets. Subsurface water drainage
systems shall be designed for ease of maintenance, operation and
locatability.
3. Implementation: The City Engineer shall require the construction of street
structural sections and subsurface drainage systems to conform to the
design standards herein and the provisions of the Caltrans "Design
Manual ". Construction materials and methods shall conform to the most
recent edition of the "Standard Specification for Public Works
Construction ". Geotechnical and hydrologic investigations to determine
the physical characteristics of the soil and likelihood of subsurface water
that may affect the pavement structural section shall be performed and
documented to the satisfaction of the City Engineer
4. Materials: Except as provided herein, all materials and construction
methods used in the construction of street structural sections, features
C.d- .^,? -% 0->
%- � —
Resolution No. 2002 -
Exhibit 'A' [Page 16]
Date: May 3, 2002
and subsurface drainage systems shall conform to the latest edition of the
"Standard Specifications for Public Works Construction ".
a. Pipe used for subsurface drains shall:
1) Be no less than 6 inches in diameter.
2) Be smooth - walled polyvinyl chloride pipe conforming to ASSHTO
M278.
3) Have perforations located in the bottom half of collector pipes.
4) Have belled ends or sleeve or stop -type couplings per AASHTO
M278. Solvent cementing of joints is not required.
5) When used for outlets, terminal risers, vertical and 45- degree
risers, elbows, wyes and tees shall not be perforated.
b. Permeable material used for backfilling trenches under, over and
around subsurface drains shall
1) Consist of hard, durable, clean gravel, or crushed stone
conforming to the quality requirements of table 200- 1.6(B) of the
"Standard Specifications for Public Works Construction ".
2) Be free from organic material, clay balls, or other deleterious
substances.
3) Conform to the gradation requirements of Table N.7.b.
c. When permeable material type is not specified Type B permeable
material shall be used.
d. Filter fabric shall be type 180N.
e. Detectable underground utility marking tape have a minimum 0.13 mm
(0.005 ") overall thickness, with no less than a 35 gauge (AWG), 0.14
mm aluminum foil core. The foil must be visible from both sides. The
layers shall be laminated together with the extrusion lamination
process, not adhesives. No inks or printing shall extend to the edges of
the tape. All printing shall be encased to avoid ink rub -off. The color -
coding of the tape shall be green and the legend shall be "SEWER ".
Detectable Underground Utility Marking Tape shall conform to the
properties listed in Tables N.7.d. Detectable Underground Utility
Marking Tape shall meet the requirements of each of the following
agency /association publications.
1) Department of Transportation, Materials Transportation Bureau,
Office of Pipeline Safety. USAS code for pressure piping B31.8,
paragraph 192.321(e).
2) National Transportation Safety Board, Washington, DC, Special
Study Prevention of Damage to Pipelines. Adopted June 7, 1974.
Report NTSB- PSS -73 -1.
Resolution No. 2002 -
Exhibit 'A' [Page 17]
Date: May 3, 2002
3) American Petroleum Institute (API). Recommended practice for
marking buried liquid petroleum pipelines - APR RP 1109.
4) General Services Administration, Washington, DC, Public
Buildings Service Guide Specification for Mechanical and
Electrical Equipment - PBS 4 -1501, Amendment 2, Page 501 -14,
Paragraph 18, Subparagraph 18.1, Clause 18.1.1.
5) Rural Electrification Authority (REA), U.S. Department of
Agriculture, Washington, DC, National Electrical Safety Code for
Underground Construction for remote and immediate hazards.
TABLE N.2.A
Traffic Indices for Public Streets
Roadway Designation
Maximum Build -out
Average Daily Traffic
50 yr
ESAL
T. 1.
B -4 Residential
<10,000
171,375
7.5
B -3D Minor Commercial /Industrial
8,000
270,000
8.0
B -3C Commercial /Industrial
16,000
540,000
8.5
B -3B Major Commercial /Industrial
20,000
540,000
8.5
B -3A Secondary Arterial
20,000
540,000
8.5
B -2 Secondary Arterial
24,000
720,000
1 9.0
B -2 Primary Arterial
36,000
1,217,500
1 9.5
TABLE N.23
Traffic Indices for Private Streets
C"-� ^.,- ^ 't.
Maximum Build -out
Roadway Designation
Average Daily Traffic
20 yr ESAL
T. I.
B -4 Residential
1,540
35,400
6.0
C"-� ^.,- ^ 't.
Resolution No. 2002 -
Exhibit 'A' [Page 18]
Date: May 3, 2002
TABLE N.7.b
PERMEABLE MATERIAL
Sieve Sizes
Percentage Passing
Type A Type B
50 -mm 2"
- --
100
37.5 -mm 11/2"
- --
95 -100
19 -mm 3/4"
100
50 -100
12.5 -mm 1/2"
95 -100
- --
9.5 -mm 3/8"
70 -100
15 -55
4.75 -mm (No. 4)
0 -55
0 -25
2.36 -mm (No. 8)
0 -10
0 -5
75-pm (no. 200)
0 -3
0 -3
TABLE N.7.d
DETECTABLE UNDERGROUND UTILITY MARKING TAPE PROPERTIES
Property
Method
Value
Thickness
ASTM D2103
0114 mm 0.0056"
Tensile strength
ASTM D882
4500g /cm (25 Ibs /inch) (5,500
PSI
Elongation
ASTM D882 -88
<50 percent at break
Printability
ASTM D2578
>50 dynes/square centimeter
Flexibility
ASTM D671 -81
Pliable hand
Inks
Manufacturing specifications
Heat -set M lex
Message repeat
Manufacturing specifications
Every 500 mm 20"
Foil
Manufacturing specifications
Dead soft/annealed
To la er
Manufacturing specifications
Virgin PET
Bottom layer
Manufacturing specifications
Virgin LDPE
Adhesives
Manufacturing specifications
>30 percent, solid 1.5 #/R
Bond strength
Boiling H2O at 100 degrees
Celsius
Five hours without peel
Colors
APWA Code
See Table 207 -25.1 B
O. USE OF TEMPORARY STEEL PLATES OVER STREET EXCAVATIONS
1. Steel Plate Bridginq: With a Non -Skid Surface. This standard covers the
use of steel plate bridging. Persons conducting work within the public
right -of -way shall not use steel plate bridging or trench plate that does not
meet the requirements of this section both in application and circumstance
of use.
-n 41 ter'
Resolution No. 2002 -
Exhibit 'A' [Page 19]
Date: May 3, 2002
2. Requirements for Use: Alternate construction methods that avoid the use
of steel plate bridging shall be used by the persons conducting work within
the public right -of -way unless otherwise approved by the Engineer. It is
recognized that to accommodate excavation work, steel plate bridging
may be necessary. All conditions for use of steel plate bridging set forth in
the requirements of this standard must be fulfilled as conditions of
approval of the use of steel plate bridging. Consideration of the use of
steel plate bridging in the review process will take into account the
following factors:
a. Traffic volume and composition.
b. Duration of use of the steel plate bridging.
c. Size of the proposed excavation.
d. Weather conditions.
3. Plate Score Formula: The following formula shall be used to score the
permitted use of steel plate bridging:
PS= [ADT +EWL +D +10xWE +5xN +20xW +S kmh +Rx100]x L
1000 8
PS= [ADT +EWL +D +10xWE +5xN +20XW +S m h +Rx100]x L
1000 5
where:
PS = plate score.
ADT = average daily traffic as defined in the CALTRANS Traffic
Manual.
• EWL = equivalent wheel loads as defined in the CALTRANS
Traffic Manual.
• D = total number of 24 hour periods during which the plates
will be utilized at the site being considered.
• WE = total number of Saturdays, Sundays and holidays that the
plates will be utilized at the site being considered.
• N = total number of overnight periods that the plates will be in
place, exclusive of Saturday, Sunday and holiday nights.
• W = total number of 24 -hour periods that the plates will be
utilized at the site being considered when the possibility of rain
exceeds 40 percent.
• S = the design speed in kilometers per hour or miles per
hour, as applicable in the formulae above, of the street where the
plates are to be installed. This number shall not be reduced for
construction zone speed reductions.
F'
Resolution No. 2002 -
Exhibit 'A' [Page 20]
Date: May 3, 2002
• R = the quotient of the vertical differential divided by the
horizontal distance. The vertical and horizontal dimensions shall be
measured at the locations spanning a distance of 15 m (50') up and
downstream of the position of the proposed steel plate bridging.
• L = the number of lanes where plates will be used.
4. Plate Score Use: When the computed value of the plate score exceeds
50, steel plate bridging shall not be used unless, and at the sole discretion
of the City Engineer, it is determinee that no alternative method of
construction is possible in lieu of using steel plate bridging or that other
overriding considerations make the use of steel plate bridging acceptable.
Alternatives considered to bridging shall include, but not be limited to,
detouring traffic, construction detour routes, tunneling, boring and other
methods of trenchless construction. Unless specifically noted in the
provisions of the City Engineer's approval, the use of steel plate bridging
at each location so approved shall not exceed four (4) consecutive
working days in any given week.
5. Additional Requirements: In all cases when the depth of the trench
exceeds the width of the steel plate bridging resting on each side of the
pavement adjacent to the trench, safety regulations require or the City
Engineer determines that shoring is necessary to protect the health or
safety of workers or the public. The persons conduction work within the
public way shall install shoring conforming to Section 7- 10.4.1 of the
Standard Specifications for Public Works Construction ( SSPWC). The
trench shoring shall be designed and installed to support the steel plate
bridging and traffic loads. All approvals for design, substitution of
materials or methods shall be submitted by the persons conduction work
within the public way in accordance with all provisions of section 2 -5.3
SSPWC Shop Drawings and Submittals. The Contractor shall backfill and
resurface excavations in accordance with section 306 -1.5 SSPWC.
6. Installation: When backfilling operations of an excavation in the traveled
way, whether transverse or longitudinal cannot be properly completed
within a work day, steel plate bridging with a non -skid surface and shoring
may be required to preserve unobstructed traffic flow. In such cases, the
following conditions shall apply:
a. Steel plate bridging when the plate score exceeds 50 is not allowed
except when, at the sole discretion of the City Engineer, it is approved
as specified above.
b. Steel plates used for bridging must extend no less than 610 mm (2')
beyond the edges of the trench.
%_ - M '
Resolution No. 2002 -
Exhibit 'A' [Page 21]
Date: May 3, 2002
c. Steel plate bridging shall be installed and maintained to operate with a
noise level such that no sound generated by the steel plate can be
heard by a person with normal hearing acuity from a distance of 15
meters (50').
d. No longitudinal trench excavation longer than 15 meters (50') shall be
covered with steel plates.
7. Installation Methods: When the use of steel plate bridging and shoring is
approved by the City Engineer, the persons conducting work within the
public right -of -way shall install using either Method (1) or (2) depending on
the design speed of the portion of street where the steel plate bridging is
proposed for use.
a. Method 1 [For speeds equal to or more than 56 Km /hr (35 MPH)]: The
pavement shall be cold planed to a depth equal to the thickness of the
plate and to a width and length equal to the dimensions of the plate.
The cold milling shall produce a flat surface that the plate shall rest on
with no horizontal or vertical movement. Horizontal gaps between the
unmilled pavement and the plate shall not exceed 25 mm (1") and shall
be filled with elastomeric sealant material which may, at the
contractor's option, be mixed with no more that 50 %, by volume, of
Type I aggregate conforming to the requirements of tables 203- 5.2(B)
and 203- 5.3(A) SSPWC .
b. Method 2 [For speeds less than 56 Km /hr (35 MPH)I: Approach
plate(s) and ending plate (if longitudinal placement) shall be attached
to the roadway and shall be secured against displacement by using
two adjustable cleats that are no more than 50 mm (2 ") shorter than
the width of the trench. The cleats shall be bolted to the underside of
each plate and located within 150 mm (6 ") of the beginning and end of
the trench for plates at the beginning and end of the trench. A
minimum of two 300 mm long by 19 mm diameter (12" x3/4") steel bolts
shall be placed through the plate and driven into holes drilled 300 mm
(12 ") into the pavement section, or other devices approved by the City
Engineer. Subsequent plates shall be butted and tack welded to each
other along 10% of the butted faces. Fine graded asphalt concrete
shall be compacted to form ramps, maximum slope 8.5% with a
minimum 300 mm (12 ") taper to cover all edges of the steel plates.
When steel plates are removed, the dowel holes in the pavement
section shall be completely filled with elastomeric sealant material. At
the Contractor's option, the methods required for Method 1 may be
used. If the use of Method 1 is elected, all requirements of Method 1
shall be used. The Contractor shall maintain the steel plates, shoring,
and asphalt concrete ramps and maintain and restore the street
surface during and after their use.
Resolution No. 2002 -
Exhibit 'A' [Page 221
Date: May 3, 2002
8. Materials: The minimum thickness of steel plate bridging shall be as
shown in Table 0.7
TABLE 0.7
REQUIRED PLATE THICKNESS FOR A GIVEN TRENCH WIDTH
Maximum Trench Width 1
Minimum Plate Thickness
0.3 m
10"
13 mm
(1/2")
0.6 m
23"
19 mm
3/4"
0.8 m
31"
22 mm
7/8"
1.0 m
41"
25 mm
1"
1.6 m
63"
32 mm
1 '/4"
9. Longer Spans: For spans greater than 1.6 m (5), a structural design shall
be prepared by a registered civil engineer and submitted to the City
Engineer for review and approval in accordance with section 2 -5.3
SSPWC of the Standard Specifications for Public Works Construction.
10. Design Criteria: Steel plate bridging shall be steel plate designed to
support the HS20 -44 truck loading per CALTRANS Bridge Design
Specifications Manual. The Contractor use steel plate with a non -skid
surface having no less than a coefficient of friction of 0.35 as determined
by California Test Method 342. In addition to all other required
construction signing, the Contractor shall install Rough Road (W33) sign
with black lettering on an orange background in advance of steel plate
bridging.
P. ADVANCE STREET NAME SIGNS:
1. Requirement: All signing and striping plans shall include requirements for
the installation of advance street name signs, consistent with the
requirements set forth herein.
2. Purpose: The purpose for such signs is to provide advance notice of the
name of the streets the driver is approaching.
3. Location / Design: The location and design of all advance street name
signs shall be determined by the City Engineer and shall be approved by
the Director of Community Development and, if the sign is to be placed in
a landscaped parkway or median to be maintained by the City, the
Director of Community Services .
C..,� ��
Resolution No. 2002 -
Exhibit 'A' [Page 23]
Date: May 3, 2002
4. Monument Siqns: A monument sign shall be used whenever possible.
Pole signs may be used when the City Engineer determines that the use
of a monument sign is inappropriate for a given application.
5. Medians: On streets with raised / landscaped medians, the preferred
location for the sign is in the median.
6. Signalized Intersections: Advance street name signs shall not be required
for signalized intersections which have overhead internally illuminated
street name signs. "
1, "". 'f 0
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