[Ord. No. 293 §510.010, 3-8-1999]
For the purposes of this Article, the following terms, phrases,
words and their derivations shall have the meaning given herein. When
not inconsistent with the context, words used in the present tense
include the future, words in the plural number include the singular
number and words in the singular number include the plural number.
The word "shall" is always mandatory and not merely
directory.
Any person making written application to the Clerk of the
City for an excavation permit hereunder.
The Board of Aldermen of the City of Laurie.
The City of Laurie.
The Clerk of the City of Laurie.
The Director of Public Works of the City of Laurie.
The excavation and other work permitted under an excavation
permit and required to be performed under this Article.
Any person who has been granted and has in full force and
effect an excavation permit issued hereunder.
Any person, firm, partnership, association, corporation,
both public and private, company or organization of any kind.
Any street, highway, sidewalk, alley, avenue or other public
way or public grounds in the City, specifically including any easement
area granted to the City for utility purposes.
[Ord. No. 293 §510.020, 3-8-1999]
It shall be unlawful for any person to dig up, break, excavate,
tunnel, undermine or in any manner break up any street or to make
or cause to be made any excavation in or under the surface of any
street for the purpose or to place, deposit or leave upon any street
any earth or other excavated material obstructing or tending to interfere
with the free use of the street, unless such person shall first have
obtained an excavation permit therefor from the Clerk as herein provided.
[Ord. No. 293 §510.030, 3-8-1999]
No excavation permit shall be issued unless a written application
for the issuance of an excavation permit is submitted to the Clerk.
The written application shall state the name and address of the applicant,
the nature, location and purpose of the excavation, the date of commencement
and date of completion of the excavation and other date as may reasonably
be required by the Director of Public Works through the Clerk. The
application shall be accompanied by plans showing the extent of the
proposed excavation work, which plans shall be approved by the Director
of Public Works.
[Ord. No. 293 §510.040, 3-8-1999]
A permit fee of fifty dollars ($50.00) shall be charged by the
City of Laurie payable to the City of Laurie for the issuance of an
excavation permit which shall be in addition to all other fees for
permits or charges relative to any proposed construction work.
[Ord. No. 293 §510.050, 3-8-1999]
The Clerk shall provide each permittee at the time a permit
is issued hereunder a suitable placard plainly written or printed
in English letters at least one (1) inch high with the following notice:
"City of Laurie, Permit No. _______ Expires _______ and in the first
(1st) blank space there shall be inserted the number of said permit
and after word "expires" shall be stated the date when said permit
expires. It shall be the duty of any permittee hereunder to keep the
placard posted in a conspicuous place at the site of the excavation
work. It shall be unlawful for any person to exhibit such placard
at or about any excavation not covered by such permit or to misrepresent
the number of the permit or the date of expiration of the permit.
[Ord. No. 293 §510.060, 3-8-1999]
A.
Before
an excavation permit as herein provided is issued, the applicant shall
deposit with the Clerk a surety bond in an amount as approved by the
Director of Public Works payable to the City of Laurie upon application
being made therefor by the applicant and the required surety bond
must be:
1.
With good and sufficient surety:
2.
By a surety company authorized to transact business in the State
or by two (2) householders in the City owning property of a value
of double the amount of the bond, over and above all legal exemptions
from execution.
3.
Satisfactory to the City Attorney in form and substance.
4.
Conditioned upon the permittee's compliance with this Chapter and
to secure and hold the City of Laurie and its officers harmless against
any and all claims, judgments or other costs arising from the excavation
and other work covered by the excavation permit or for which the City,
the Board or any City Officer may be made liable by reason of any
accident or injury to persons or property through the fault of the
permittee either in not properly guarding the excavation or for any
other injury resulting from the negligence of the permittee and further
conditioned to fill up, restore and place in good and safe condition
as near as may be to its original condition and to the satisfaction
of the Director of Public Works all openings and excavations made
in streets and to maintain any street where excavation is made in
as good condition for the period of twelve (12) months after said
work shall have been done, usual wear and tear excepted, as it was
in before said work shall have been done. Any settlement of the surface
within said one (1) year period shall be deemed conclusive evidence
of defective backfilling by the permittee. Recovery on such bond for
any injury or accident shall not exhaust the bond but it shall in
its entirety cover any or all future accidents or injuries during
the excavation work for which it is given. In the event of any suit
or claim against the City by reason of the negligence or default of
the permittee, upon the City's giving written notice to the permittee
of such suit or claim, any final judgment against the City requiring
it to pay for such damage shall be conclusive upon the permittee and
his/her surety. An annual bond may be given under this provision which
shall remain in force for one (1) year conditioned as above and in
other respects as specified above but applicable as to all excavation
work in streets by the principal in such bond during the term of one
(1) year from said date.
[Ord. No. 293 §510.070, 3-8-1999]
A.
Application
for a permit to perform excavation work under this Chapter shall be
further accompanied with a special cash deposit with the City Collector
as follows:
1.
A cash deposit of two hundred fifty dollars ($250.00) to guarantee
restoration as required by this Chapter; or
2.
A general annual cash deposit of five hundred dollars ($500.00) which
shall remain with the Collector and which shall waive the special
deposit required by Subdivision (1) above and which shall entitle
the applicant to make multiple excavations without the filing of special
deposits for each excavation.
B.
Any
special or general cash deposit shall serve as security for the repair
and performance of work necessary to put the street or alley in as
good a condition as it was prior to the excavation.
C.
Sixty
(60) days following the permittee's completion of the work covered
by the permit and upon approval by the Director of Public Works of
the restoration by the permittee, said special cash deposit may be
refunded to the permittee upon demand, provided however, the Director
of Public Works may lower the amount of special deposit at their discretion
for small excavations less than five hundred (500) square feet or
for excavation on unimproved portions of streets or highways.
[Ord. No. 293 §510.080, 3-8-1999]
A.
The
permittee shall take appropriate measures to assure that during the
performance of the excavation work traffic conditions as nearly normal
as practicable shall be maintained at all times so as to cause as
little inconvenience as possible to the occupants of the abutting
property and to the general public, provided that the Director of
Public Works may permit the closing of streets to all traffic for
a period of time prescribed by him/her if in his/her opinion it is
necessary. The permittee shall route and control traffic including
its own vehicles as directed by the City Police Department. The following
steps shall be taken before any street may be closed or restricted
to traffic:
1.
The permittee must receive the approval of the Director of Public
Works and the Police Department therefor;
2.
The permittee must notify the Chief of the Gravois Fire District,
Morgan County Dispatch and CamMo Ambulance, of any street so closed;
3.
Upon completion of construction work the permittee shall notify the
Street Commissioner and City Police Department before traffic is moved
back to its normal flow so that any necessary adjustments may be made;
4.
Where flagmen are deemed necessary by the Director of Public Works,
they shall be furnished by the permittee at his/her own expense. Through
traffic shall be maintained without the aid of detours, if possible.
In instances in which this would not be feasible, the Director of
Public Works will designate detours. The City shall maintain roadway
surfaces of existing highways designated as detours without expense
to the permittee but in case there are no existing highways, the permittee
shall construct all detours at its expense and in conformity with
the specifications of the Street Commissioner. The permittee will
be responsible for any unnecessary damage caused to any streets by
the operation of its equipment.
[Ord. No. 293 §510.090, 3-8-1999]
The excavation work shall be performed and conducted so as not
to interfere with access to fire stations or any other facility providing
emergency service.
[Ord. No. 293 §510.100, 3-8-1999]
The permittee shall erect and maintain suitable timber barriers
to confine earth from trenches or other excavations in order to encroach
upon streets as little as possible. The permittee shall construct
and maintain adequate and safe crossings over excavations and across
highways under improvement to accommodate vehicular and pedestrian
traffic at all street intersections. Vehicular crossings shall be
constructed and maintained of plank, timbers and blocking of adequate
size to accommodate vehicular traffic safety. Decking shall be not
less than four (4) inches thick and shall be securely fastened together
with heavy wire and staples. Pedestrian crossings shall consist of
planking three (3) inches thick, twelve (12) inches wide and of adequate
length, together with necessary blocking. The walk shall be not less
than three (3) feet in width and shall be provided with a railing
as required by the Director of Public Works.
[Ord. No. 293 §510.110, 3-8-1999]
The permittee shall not interfere with any existing utility
without the written consent of the Director of Public Works and the
utility company or person owning the utility. If it becomes necessary
to remove an existing utility, this shall be done by its owner. No
utility owned by the City shall be moved to accommodate the permittee
unless the cost of such work be borne by the permittee. The cost of
moving privately owned utilities shall be similarly borne by the permittee
unless he/she makes other arrangements with the person owning the
utility. The permittee shall support and protect by timbers or otherwise
all pipes, conduits, poles, wires or other apparatus which may be
in any way affected by the excavation work over, along or across said
work. In case any of said pipes, conduits, poles, wires or apparatus
should be damaged, they shall be repaired by the agency or person
owning them and the expense of such repairs shall be charged to the
permittee and his/her or its bond shall be liable therefor. The permittee
shall be responsible for any damage done to any public or private
property by reason of the breaking of any water pipes, sewer, gas
pipe, electric conduit or other utility and his/her bond shall be
liable therefor. The permittee shall inform himself/herself as to
the existence and location of all underground utilities and protect
the same against damage.
[Ord. No. 293 §510.120, 3-8-1999]
The permittee shall at all times and at his/her or its own expense
preserve and protect from injury any adjoining property by providing
proper foundations and taking other measures suitable for the purpose.
Where in the protection of such property it is necessary to enter
upon private property for the purpose of taking appropriate protective
measures, the permittee shall obtain a license from the owner of such
private property for such purpose and if he/she cannot obtain a license
from such owner, the Director of Public Works may authorize him/her
to enter the private premises solely for the purpose of making the
property safe. The permittee shall at his/her own expense shore up
and protect all buildings, walls, fences or other property likely
to be damaged during the progress of the excavation work and shall
be responsible for all damage to public or private property or highways
resulting from his/her failure properly to protect and carry out said
work. All construction and maintenance work shall be done in a manner
calculated to leave the lawn area clean of earth and debris and in
a condition as nearly as possible to that which existed before such
work began. The permittee shall not remove even temporarily any trees
or shrubs which exist in parking strip areas or easements across private
property without first having notified and obtained the consent of
the property owner or in the case of public property the appropriate
City department or City Officials having control of such property.
[Ord. No. 293 §510.130, 3-8-1999]
Any excavation made in any sidewalk or under a sidewalk shall
be provided with a substantial and adequate footbridge over said excavation
on the line of the sidewalk, which bridge shall be at least three
(3) feet wide and securely railed on each side so that foot passengers
can pass over safety at all times.
[Ord. No. 293 §510.140, 3-8-1999]
The permittee shall erect such fence, railing or barriers about
the site of the excavation work as shall prevent danger to persons
using the City street or sidewalks and such protective barriers shall
be maintained until the work shall be completed or the danger removed.
At twilight there shall be placed upon such place of excavation and
upon any excavated materials or structures or other obstructions to
streets suitable and sufficient lights which shall be kept burning
throughout the night during the maintenance of such obstructions.
It shall be unlawful for anyone to remove or tear down the fence or
railing or other protective barriers or any lights provided there
for the protection of the public.
[Ord. No. 293 §510.150, 3-8-1999]
It shall be unlawful for the permittee to suffer or permit to
remain unguarded at the place of excavation or opening any machinery,
equipment or other device having the characteristics of an attractive
nuisance likely to attract children and hazardous to their safety
or health.
[Ord. No. 293 §510.160, 3-8-1999]
All material excavated from trenches and piled adjacent to the
trench or in any street shall be piled and maintained in such manner
as not to endanger those working in the trench, pedestrians or users
of the streets and so that as little inconvenience as possible is
caused to those using streets and adjoining property. Where the confines
of the area being excavated are too narrow to permit the piling of
excavated material beside the trench, such as might be the case in
a narrow alley, the Director of Public Works shall have the authority
to require that the permittee haul the excavated material to a storage
site at the time of backfilling. It shall be the permittee's responsibility
to secure the necessary permission and make all necessary arrangements
for all required storage and disposal sites.
[Ord. No. 293 §510.170, 3-8-1999]
All damage done to existing improvements during the progress
of the excavation work shall be repaired by the permittee. Materials
for such repair shall conform with the requirements of any applicable
code or ordinance. If upon being ordered the permittee fails to furnish
the necessary labor and materials for such repairs, the Street Commissioner
shall have the authority to cause said necessary labor and materials
to be furnished by the City and the cost shall be charged against
the permittee and the permittee shall also be liable on his/her or
its bond therefor.
[Ord. No. 293 §510.180, 3-8-1999]
Property lines and limits of easements shall be indicated on
the plan of excavation submitted with the application for the excavation
permits and it shall be the permittee's responsibility to confine
excavation work within these limits.
[Ord. No. 293 §510.190, 3-8-1999]
As the excavation work progresses, all streets and private properties
shall be thoroughly cleaned of all rubbish, excess earth, rock and
other debris resulting from such work. All cleanup operations at the
location of such excavation shall be accomplished at the expense of
the permittee and shall be completed to the satisfaction of the Director
of Public Works. From time to time as may be ordered by the Director
of Public Works and in any event immediately after completion of said
work, the permittee shall at his/her or its own expense clean up and
remove all refuse and unused materials of any kind resulting from
said work and upon failure to do so within twelve (12) hours after
having been notified to do so by the Director of Public Works, said
work may be done by the Director of Public Works and the cost thereof
charged to the permittee and the permittee shall also be liable for
the cost thereof under the surety bond provided hereunder.
[Ord. No. 293 §510.200, 3-8-1999]
The permittee shall provide for the flow of all watercourses,
sewers or drains intercepted during the excavation work and shall
replace the same with new material and fittings or shall make such
provisions for them as the Director of Public Works may direct. The
permittee shall not obstruct the gutter of any street but shall use
all proper measures to provide for the free passage of surface water.
The permittee shall make provision to take care of all surplus water,
muck, silt, slickings or other runoff pumped from excavations or resulting
from slicing or other operations and shall be responsible for any
damage resulting from his/her failure to so provide.
[Ord. No. 293 §510.210, 3-8-1999]
Whenever it is necessary to break through existing pavement
for excavation purposes and where trenches are to be twelve (12) inches
(one (1) foot) or over in depth, the pavement in the base shall be
removed to at least six (6) inches beyond the outer limits of the
subgrade that is to be disturbed in order to prevent settlement and
a six (6) inch shoulder of undisturbed materials shall be provided
in each side of the excavated trench. The face of the remaining pavement
shall be approximately vertical. Asphalt paving shall be scored or
otherwise cut in a straight line. No pile driver may be used in breaking
up the pavement.
[Ord. No. 293 §510.220, 3-8-1999]
Tunnels under pavement shall not be permitted except by permission
of the Director of Public Works and if permitted shall be adequately
supported by timbering and backfilling under the direction of the
Director of Public Works.
[Ord. No. 293 §510.230, 3-8-1999]
Backfilling in any street opened or excavated pursuant to an
excavation permit issued hereunder shall be compacted to a degree
equivalent to that of the undisturbed ground in which the trench was
dug. Compacting shall be done by mechanical tappers or vibrators or
by rolling in layers, only if granular backfill is used, as required
by the fill in question and sound engineering practices generally
recognized in the construction industry.
[Ord. No. 293 §510.240, 3-8-1999]
Backfilling up to the first (1st) eighteen (18) inches above
the top of the utility pipes or similar installation shall be done
with thin layers. Each layer is to be tamped by manual or mechanical
means. Layers that are hand tamped shall not exceed four (4) inches
in thickness. Layers that are power tamped shall not exceed six (6)
inches in thickness. The same requirements shall apply to the remainder
of the backfilling if tamping is the method used for backfilling.
Backfilling of all pipes of over twenty-four (24) inches in diameter
shall be carried up to the spring line of the pipe in three (3) inch
layers, with each layer moistened and thoroughly tamped with suitable
mechanical equipment. The backfill around all pipes twenty-four (24)
inches or less in diameter shall be flooded or tamped as specified
above to a depth of eighteen (18) inches above the top of the pipe
before any additional backfilling is placed thereon.
[Ord. No. 293 §510.250, 3-8-1999]
Whenever any excavation for the laying of pipe is made through
rock, the pipe shall be laid six (6) inches above the rock bottom
of the trench and the space under, around and six (6) inches above
the pipe shall be backfilled with clean river sand, non-corrosive
soil or one-quarter (¼) inch minus gravel or, in lieu thereof,
said pipe may be protected by any means approved by the American Society
of Mechanical Engineers. Broken pavement, large stones and debris
shall not be used in any backfill.
[Ord. No. 293 §510.260, 3-8-1999]
Backfilling shall be completed by placing the backfill material
well up over the top of the trench. For dry backfilling, the material
shall be compacted with a roller of an approved type or with the rear
of a truck carrying at least five (5) tons until the surface is unyielding.
The surface shall then be graded as required.
[Ord. No. 293 §510.270, 3-8-1999]
A.
The
permittee shall restore the surface of all streets, broken into or
damaged as a result of the excavation work, to its original condition
in accordance with the specifications of the Director of Public Works.
The permittee may be required to place a temporary surface over openings
made in paved traffic lanes. Except when the pavement is to be replaced
before the opening of the cut to traffic, the fill above the bottom
of the paving slab shall be made with suitable materials well tamped
into placed and this fill shall be topped with a minimum of at least
one (1) inch of bituminous mixture which is suitable to maintain the
opening in good condition until permanent restoration can be made.
The crown of the temporary restoration shall not exceed one (1) inch
above the adjoining pavement. The permittee shall exercise special
care in making such temporary restorations and must maintain such
restorations in safe traveling conditions until such time as permanent
restorations are made. The asphalt which is used shall be in accordance
with the specifications of the Director of Public Works. If in the
judgment of the Director of Public Works it is not expedient to replace
the pavement over any cut or excavation made in the street upon completion
of the work allowed under such permit by reason of the looseness of
the earth or weather conditions, he/she may direct the permittee to
lay a temporary pavement of wood or other suitable material designated
by him/her over such cut or excavation to remain until such time as
the repair of the original pavement may be properly made.
B.
Permanent
restoration of the street shall be made by the permittee in strict
accordance with the specifications prescribed by the Director of Public
Works to restore the street to its original and proper condition or
as near as may be.
C.
Acceptance
or approval of any excavation work by the Director of Public Works
shall not prevent the City from asserting a claim against the permittee
and his/her or its surety under the surety bond required hereunder
for incomplete or defective work if discovered within twelve (12)
months from the completion of the excavation work. The Street Commissioner's
presence during the performance of any excavation work shall not relieve
the permittee of its responsibilities hereunder.
[Ord. No. 293 §510.280, 3-8-1999]
A.
If
the permittee shall have failed to restore the surface of the street
to its original and proper condition upon the expiration of the time
fixed by such permit or shall otherwise have failed to complete the
excavation work covered by such permit, the Director of Public Works,
if he/she deems it advisable, shall have the right to do all work
and things necessary to restore the street and to complete the excavation
work. The permittee shall be liable for the actual cost thereof and
twenty-five percent (25%) of such cost in addition for general overhead
and administrative expenses. The City shall have a cause of action
for all fees, expenses and amounts paid out and due it for such work
and shall apply in payment of the amount due it any funds of the permittee
deposited as herein provided and the City shall also enforce its rights
under the permittee's surety bond provided pursuant to this Chapter.
B.
It
shall be the duty of the permittee to guarantee and maintain the site
of the excavation work in the same condition as it was prior to the
excavation for one (1) year after restoring it to its original condition.
[Ord. No. 293 §510.290, 3-8-1999]
Except by special permission from the Director of Public Works,
no trench shall be excavated more than two hundred fifty (250) feet
in advance of pipe laying nor left unfilled more than five hundred
(500) feet where pipe has been laid. The length of the trench that
may be opened at any one time shall not be greater than the length
of pipe and the necessary accessories which are available at the site
ready to be put in place. Trenches shall be braced and sheathed according
to generally accepted safety standards for construction work as prescribed
by the Street Commissioner. No timber bracing, lagging, sheathing
or other lumber shall be left in any trench.
[Ord. No. 293 §510.300, 3-8-1999]
The permittee shall prosecute with diligence and expedition
all excavation work covered by the excavation permit and shall promptly
complete such work and restore the street to its original condition,
or as near as may be, as soon as practicable and in any event not
later than the date specified in the excavation permit therefor.
[Ord. No. 293 §510.310, 3-8-1999]
If in his/her judgment traffic conditions, the safety or convenience
of the traveling public or the public interest require that the excavation
work be performed as emergency work, the Director of Public Works
shall have full power to order, at the time the permit is granted,
that a crew of men and adequate facilities be employed by the permittee
twenty-four (24) hours a day to the end that such excavation work
may be completed as soon as possible.
[Ord. No. 293 §510.320, 3-8-1999]
In the event of any emergency in which a sewer, main, conduit
or utility in or under any street breaks, bursts or otherwise is in
such condition as to immediately endanger the property, life, health
or safety of any individual, the person owning or controlling such
sewer, main, conduit or utility, without first applying for and obtaining
an excavation permit hereunder, shall immediately take proper emergency
measures to cure or remedy the dangerous conditions for the protection
of property, life, health and safety of individuals. However, such
person owning or controlling such facility shall apply for an excavation
permit not later than the end of the next succeeding day during which
the City Collector's office is open for business and shall not proceed
with permanent repairs without first obtaining an excavation permit
hereunder.
[Ord. No. 293 §510.330, 3-8-1999]
Each permittee shall conduct and carry out the excavation work
in such manner as to avoid unnecessary inconvenience and annoyance
to the general public and occupants of neighboring property. The permittee
shall take appropriate measures to reduce to the fullest extent practicable
in the performance of the excavation work, noise, dust and unsightly
debris and between the hours of 10:00 P.M. and 7:00 A.M. shall not
use, except with the express written permission of the Director of
Public Works or in case of an emergency as herein otherwise provided,
any tool, appliance or equipment producing noise of sufficient volume
to disturb the sleep or repose of occupants of the neighboring property.
[Ord. No. 293 §510.340, 3-8-1999]
The permittee shall not disturb any surface monuments or hubs
found on the line of excavation work until ordered to do so by the
Director of Public Works and should monuments or hubs be moved or
destroyed, it shall be the duty of the permittee to replace same and,
if necessary, resurvey the affected areas.
[Ord. No. 293 §510.350, 3-8-1999]
The Director of Public Works shall make such inspections as
are reasonably necessary in the enforcement of this Chapter. The Street
Commissioner shall have the authority to promulgate and cause to be
enforced such rules and regulations as may be reasonably necessary
to enforce and carry out the intent of this Chapter.
[Ord. No. 293 §510.360, 3-8-1999]
Users of subsurface street space shall maintain accurate drawings,
plans and profiles showing the location and character of all major
underground structures including abandoned installations and shall
furnish copies to the Director of Public Works. Corrected maps shall
be filed with the Director of Public Works within thirty (30) days
after new installations, changes or replacements are made.
[Ord. No. 293 §510.370, 3-8-1999]
The provisions of this Chapter shall not be applicable to any
excavation work under the direction of competent authorized employees
of the City or by any contractor of the City performing work for and
in behalf of the City necessitating openings or excavations in streets.
[Ord. No. 293 §510.380, 3-8-1999]
A permittee, prior to the commencement of excavation work hereunder, shall furnish the Director of Public Works satisfactory evidence in writing that the permittee has in force and will maintain in force during the performance of the excavation work and the period of the excavation permit public liability insurance of not less than one million dollars ($1,000,000.00) combined single limit duly issued by an insurance company authorized to do business in this State. Provided however, that this provision shall only apply to those permittees required to file surety bond under Section 510.060 of this Chapter.
[Ord. No. 293 §510.390, 3-8-1999]
This Chapter shall not be construed as imposing upon the City
or any official or employee any liability or responsibility for damages
to any person injured by the performance of any excavation work for
which an excavation permit is issued hereunder; nor shall the City
or any official or employee thereof be deemed to have assumed any
such liability or responsibility by reason of inspections authorized
hereunder, the issuance of any permit or the approval of any excavation
work.
[Ord. No. 293 §510.410, 3-8-1999]
All subsurface installations shall be no less than twenty-four
(24) inches below ground surface or grade.
[Ord. No. 2009-23 §1, 9-14-2009]
A.
Overview Of Requirements For New Roadways.
1.
All new roadways to be maintained by the City shall be constructed according to the acceptance criteria contained herein and certified by a licensed professional engineer as compliant with these standards. Specifically, the certification letter and inspection report required by Section 510.430 shall state a finding that the roadway has been completed in accordance with roadway plans approved by the Director of Public Works.
2.
Following the completion of the roadway project, the applicant must
guarantee the maintenance of pavement, seeding, mulching and stormwater
drainage improvements for a period of one (1) year. Accordingly, the
City may require the applicant to make a cash deposit or posting of
a performance bond to secure performance of these obligations.
3.
All new roadway construction must have a valid NPDES permit.
B.
Roadway Classifications.
1.
Arterial roadways include any that serve to collect traffic from
collector roads, permitting movement of a large volume of traffic
from one (1) geographic area to another.
2.
Collector roadways collect traffic from local roads and channel traffic
to an arterial or another collector roadway.
3.
Local roadways permit ingress and egress from residences or other
buildings, circulating traffic to and from collector roadways.
C.
Drainage Issues. The pavement must drain laterally with a minimum cross slope of two percent (2%). From the edge of the paved shoulder, a triangular cross section drainage channel (minimum depth of twenty-four (24) inches) must be constructed with a maximum of 3:1 side slopes (horizontal to vertical) to convey drainage away from the roadway. As a critical component of the design, the application for acceptance and the accompanying report must address drainage issues, which may require the design and construction of related features, such as detention basins and culverts (see Section 510.440).
D.
Roadway Construction Standards.
1.
New roadway construction must follow the standards shown in Table
1.
|
Table 1: Roadway Construction Minimum Standards
| |||
|---|---|---|---|
|
Design Element
|
Arterial
|
Collector
|
Local
|
|
Row width
|
72 feet
|
60 feet
|
40 feet
|
|
Lane width
|
12 feet
|
11 feet
|
10 feet
|
|
Paved shoulder width
|
8 feet
|
6 feet
|
2 feet
|
|
Cul-de-sac right-of-way radius
|
n/a
|
n/a
|
50 feet
|
|
Cul-de-sac pavement radius
|
n/a
|
n/a
|
38 feet
|
|
Minimum paved radius at intersections
|
30 feet
|
25 feet
|
25 feet
|
|
Design speed
|
40 mph
|
35 mph
|
30 mph
|
|
Stopping sight distance
|
305 feet
|
250 feet
|
200 feet
|
|
Horizontal curve radius
|
444 feet
|
315 feet
|
215 feet
|
|
Minimum K-value (sag vertical curves)
|
64
|
49
|
37
|
|
Bridge load
|
HS20
|
HS20
|
HS20
|
|
Maximum grade
|
6%
|
10%
|
12%
|
|
Minimum grade
|
1%
|
1%
|
1%
|
|
Cross slope
|
2%
|
2%
|
2%
|
2.
The City maintains the power of discretion to approve either asphalt
(Table 2) or concrete pavement (Table 3). Roadway construction shall
conform to these standards.
|
Table 2: Asphalt Pavement Minimum Standards
| |||
|---|---|---|---|
|
Design Element
|
Arterial
|
Collector
|
Local
|
|
Subgrade
|
Fill Sections
Depth: 12 inches
Compaction: 95%
Cut Sections
Depth: 6 inches
Compaction: 95%
|
Fill Sections
Depth: 12 inches
Compaction: 95%
Cut Sections
Depth: 6 inches
Compaction: 95%
|
Fill Sections
Depth: 12 inches
Compaction: 95%
Cut Sections
Depth: 6 inches
Compaction: 95%
|
|
Base
Course
|
Depth: 6 inches
Material: Type-1
aggregate
|
Depth: 4 inches
Material: Type-1
aggregate
|
Depth: 4 inches
Material: Type-1
aggregate
|
|
Pavement
Base
Course
|
Depth: 4 inches
Material: plant mix
bituminous
|
Depth: 3 inches
Material: plant mix
bituminous
|
Depth: 2½ inches
Material: plant mix
bituminous
|
|
Pavement
Surface
Course
|
Depth: 2 inches
Material: Type-C
asphaltic concrete
|
Depth: 2 inches
Material: Type-C
asphaltic concrete
|
Depth: 1½ inches
Material: Type-C
asphaltic concrete
|
|
Table 3: Concrete Pavement Minimum Standards
| |||
|---|---|---|---|
|
Design Element
|
Arterial
|
Collector
|
Local
|
|
Subgrade
|
Fill Sections
Depth: 12 inches
Compaction: 95%
Cut Sections
Depth: 6 inches
Compaction: 95%
|
Fill Sections
Depth: 12 inches
Compaction: 95%
Cut Sections
Depth: 6 inches
Compaction: 95%
|
Fill Sections
Depth: 12 inches
Compaction: 95%
Cut Sections
Depth: 6 inches
Compaction: 95%
|
|
Base
Course
|
Depth: 6 inches
Material: Type-1
aggregate
|
Depth: 4 inches
Material: Type-1
aggregate
|
Depth: 4 inches
Material: Type-1
aggregate
|
|
Pavement
Course
|
Depth: 8 inches
Material: Class-A
Portland Cement
Concrete (4,000 psi)
|
Depth: 7 inches
Material: Class-A
Portland Cement
Concrete (4,000 psi)
|
Depth: 6 inches
Material: Class-A
Portland Cement
Concrete (4,000 psi)
|
3.
Additionally, placement and material specification for asphaltic
cement or concrete pavement shall comply with the following Sections
of MoDOT's Standard Specifications for Highway Construction:
a.
Section 201 — Clearing and Grubbing.
b.
Section 209 — Subgrade Preparation.
c.
Section 210 — Subgrade Compaction.
d.
Section 211 — Subgrade Scarifying.
e.
Section 304 — Aggregate Base Course.
f.
Section 401 — Plant Mix Bituminous Base and Pavement.
g.
Section 403 — Asphaltic Concrete Pavement.
h.
Section 501 — Concrete.
i.
Section 502 — Portland Cement Concrete Base and Pavement.
j.
Section 806 — Pollution, Erosion and Sediment Control (includes
seeding and mulching).
[Ord. No. 2009-23 §2, 9-14-2009]
A.
Acceptance Requirements For Existing Roadways.
1.
The certification letter and report required by Section 510.430 shall present general observations, indicate the quality of the existing pavement and subgrade condition (based on visual inspection and the following sample and testing requirements), assign a reasonable surface condition coefficient (coefficient of friction) for pavement analysis and describe the projected life, foreseeable repairs and maintenance needs of the roadway. Also, the report must effectively address associated issues, such as public utilities and storm drainage and set forth the results of all testing and analysis required by the following Subsections.
2.
The applicant shall obtain pavement cores for laboratory testing
with a minimum spacing of two hundred (200) feet, providing a minimum
of twelve (12) core samples for testing, regardless of the length
of the roadway.
3.
A City-approved geotechnical contractor shall perform the coring
and laboratory testing.
4.
The contractor must take core samples that accurately represent the
existing roadway conditions, including samples in areas of depression,
expansion and surface failing.
5.
Laboratory testing must determine both the percent compaction (referenced
to the Rice theoretical maximum because actual maximum density can
only be calculated on new asphalt mixtures) and percent of air voids.
Accordingly, for acceptance, the test results must indicate a minimum
of ninety-five percent (95%) compaction and three and one-half percent
(3.5%) to four and one-half percent (4.5%) air voids (in compliance
with MoDOT guidelines). If MoDOT guidelines are not strictly followed,
the engineer performing the work should provide a written opinion
as to the general quality of the pavement.
6.
After the cores are removed, the thickness of the aggregate base,
if any, must be determined in the field. Also, a small sample of the
aggregate base must be obtained from at least two (2) locations and
returned to the laboratory to confirm suitable material (i.e., whether
clean rock was used).
7.
Soil subgrade beneath the aggregate base at each core must be sampled
using Shelby tube (if possible) or split-barrel (if too much rock
for Shelby tubes) sampling procedures. These samples shall be returned
to the laboratory for classification and to determine the density,
moisture content and consistency. Additionally, a bulk sample of the
soil subgrade shall be obtained to perform a standard proctor and
CBR (California Bearing Ratio) tests to determine maximum density
and to form a comparison with the Shelby tube samples.
8.
Using anticipated traffic volumes or reasonable estimates, a pavement
analysis shall be performed to determine if the pavement section is
of adequate thickness, using the information obtained from the pavement
condition survey and laboratory testing.
[Ord. No. 2009-23 §3, 9-14-2009]
A.
The
application and review process shall be as follows:
1.
A "petition for establishment of public road" shall be submitted
to the City's Director of Public Works, to request that any new or
existing private roadway be accepted into the City road system. The
petition shall be in the form on file in the City Clerk's office.
2.
The roadway shall be inspected by a City-approved professional engineer
licensed in the State of Missouri. For new roadways, a letter certifying
that the roadway construction complies with these standards signed
by the engineer shall be submitted with the petition. For existing
roadways, the core sample test results and the report from the engineer
shall be submitted with the petition.
3.
The City's Director of Public Works shall review the application,
the engineer's report and the certification letter. Once all appropriate
documentation has been received, the Director of Public Works shall
present the materials to the Board of Aldermen for consideration.
The roadway may be accepted, accepted conditionally or not accepted
at the Board of Aldermen's complete discretion. For example, the Board
may decide that the roadway will be accepted under the condition that
certain repairs are made and monetary adjustments are paid.
4.
If repairs are required by the Board, the requesting party shall
notify the City Director of Public Works when the required corrective
actions are complete. The Director of Public Works will then make
a final inspection to insure that the repairs are made to the City's
satisfaction. If the roadway repairs are deemed unsatisfactory, the
requesting party may be given three (3) months to correct the deficiencies.
If the repairs are not completed satisfactorily during this time period,
the petition will be returned to the requesting party and the entire
process will start anew.
5.
The right-of-way shall be transferred and all field inspections and
other work shall be conducted at no cost to the City.
6.
An applicant shall convey the associated right-of-way to the City
for perpetual public use by means of a deed of dedication, quit claim
deed, warranty deed or perpetual easement.
7.
A certified plat and written right-of-way transfer documents must
be prepared by the requesting party and submitted to the Director
of Public Works at the time all documentation is finalized to submit
the request to the Board of Aldermen.
8.
Additional public petition requirement for existing roadways. In order for an existing private roadway to be accepted into the
City's public road system ninety-five percent (95%) of the property
owners adjacent to the existing roadway to be transferred to the City
must agree to the transfer. A petition relating to an existing roadway
shall include a statement of agreement signed by at least ninety-five
percent (95%) of the property owners. Once a proper request has been
received and the Board of Aldermen makes a decision to consider accepting
the right-of-way of the named roadway, the property owners must convey
to the City the entire right-of-way of the named roadway before the
City may accept the transfer of the roadway into the City's public
road system.
9.
Note: Compliance with these steps will not guarantee
acceptance of any road. Each request will be considered in terms of
then existing circumstances and action taken by the Board of Aldermen
will be in accordance with the best interest of the City as a whole.
[Ord. No. 2009-23 §4, 9-14-2009]
A.
The
following general standards shall apply:
1.
Minimum pipe size shall be fifteen (15) inches in diameter.
2.
The velocity within the system shall be between three (3) and twenty
(20) feet per second.
3.
Bridges and culverts must be certified by a professional engineer
with specific expertise in the design of such structures and must
include an appropriate hydraulic analysis.
4.
A drainage system must be engineered and constructed when the drainage
basin area exceeds two (2) acres.
5.
The maximum spacing between storm drain manholes shall be five hundred
(500) feet.
B.
Flood Protection Of Property.
1.
Property not reserved or designed for conveying stormwater shall
be protected from frequent inundation:
2.
Structures shall be protected from infrequent flooding by:
a.
Providing a minimum of one (1) foot freeboard above the 100-year
event stage, at any point along the drainage system, for openings
in a building. For lakes and detention basins the 100-year storm stage
will be the water surface of flow through the emergency spillway.
Where 10-year storm flows are less than eight (8) cfs, freeboard may
be reduced to six (6) inches.
b.
Floodproofing a building below the 100-year stormwater surface elevation
plus one (1) foot of freeboard, in accordance with the current edition
of the International Building Code. Where the 10-year storm flows
are less than eight (8) cfs, freeboard may be reduced to six (6) inches.
C.
Flood Protection Of Streets.
1.
Drainage improvements must limit water spread in streets to provide
a center clear-lane ten (10) feet wide (five (5) feet offset to each
side from the centerline) for the 10-year design storm. If the roadway
conveyance system connects to an underground system with lesser capacity,
the system must be constructed to allow the discharge of that excess
capacity into the overflow system.
2.
Street crossings. Concentrated flow not conveyed
in the gutter system shall be conveyed under streets to prevent vehicles
from being swept from the roadway in infrequent storms. These crossings
may be bridges, culverts or underground systems. A common practice
is to construct the low point in the roadway so that it does not fall
on the bridge or culvert. This practice protects the structure from
damage in an overflow condition, but does not change this requirement.
Crossings will be designed to completely convey flood flows without
street overtopping in accordance with the following table:
|
Street Classification
|
Minimum Design Storm Capacity
| |
|---|---|---|
|
Arterial
|
50-year event
| |
|
Collector
|
25-year event
| |
|
Local (residential)
|
10-year event
|
3.
Further, concentrated flow in excess of the minimum design storm
may only overtop the roadway if the following conditions are met:
a.
The span of the structure opening is less than twenty (20) feet.
b.
The peak stormwater runoff from the 100-year storm is two hundred
fifty (250) cfs or less, unless a guardrail is installed on the downstream
side of the roadway. Such overflow depths at low points in roadways
during the 100-year storm will be limited to seven (7) inches measured
at the high point in the roadway cross section; except that it also
shall not exceed fourteen (14) inches at the deepest point in the
roadway cross section. Depths may be limited where necessary by reverse
grading the downstream right-of-way area, by lengthening the vertical
curve of the roadway, by reducing roadway crown or by other similar
means. Roadway overtopping depths shall be determined by integrating
the broad crested wier formula across the roadway profile. Each incremental
flow can be determined by using the formula:
|
|
q
|
=
|
Clh3/2
|
|
|
where:
| ||
|
|
q
|
=
|
the flow for an increment of profile length (width of flow);
|
|
|
l
|
=
|
the incremental width;
|
|
|
C
|
=
|
a flow coefficient that shall not exceed three (3.0);
|
|
|
h
|
=
|
the average depth of flow at each increment;
|
D.
Hydrologic Computations.
1.
Watersheds less than two hundred (200) acres. The
rational method may be used to calculate peak rates of runoff to elements
of enclosed and open channel systems, including inlets, when the total
upstream area tributary to the point of consideration is less than
two hundred (200) acres. The rational method is defined as follows:
|
|
Q
|
=
|
KCiA
|
|
|
where:
| ||
|
|
Q
|
=
|
Peak rate of runoff to system in cfs
|
|
|
C
|
=
|
Runoff coefficient
|
|
|
i
|
=
|
Rainfall intensity in inches per hour
|
|
|
K
|
=
|
Dimensionless coefficient to account for antecedent precipitation
as follows, except the product of C, K shall not exceed one (1.0).
|
|
Design Storm
|
K
| |
|---|---|---|
|
10-year (and more frequent)
|
1.00
| |
|
25-year
|
1.10
| |
|
50-year
|
1.20
| |
|
100-year
|
1.25
|
2.
Baseline unit hydrograph method. The following computer
implementations of the unit hydrograph method are acceptable for all
watersheds:
|
|
▄
|
SCS Technical Release No. 55 "Urban Hydrology for Small Watersheds",
2nd Edition, June 1986.
|
|
|
▄
|
SCS Technical Release No. 20 "Project Formulation — Hydrology",
2nd Edition, May 1983.
|
|
|
▄
|
U.S. Army Corps of Engineers, Hydrologic Engineering Center
— "HEC-1 Flood Hydrograph Package".
|
|
|
▄
|
U.S. Army Corps of Engineers, Hydrologic Engineering Center
— "HEC-HMS Hydrologic Modeling System", current version.
|
|
|
Note: The U.S. Soil Conservation Service (SCS)
Type 2, 24-hour rainfall distribution shall be used for all computations
that employ the use of rainfall mass.
|
E.
Energy Dissipation. The outfall shall include energy dissipation
sufficient to transition outlet flows to velocities and applied shear
stresses consistent with the normal flow conditions in the receiving
channel for the design storm. Examples of energy dissipating structures
are:
G.
Inverts Of Pipes At Junctions.
1.
The crown(s) of pipe(s) entering a drainage structure shall be at
or above the crown of the pipe exiting from the structure and provide
a minimum fall of the invert in the structure of two-tenths (0.2)
feet for straight flow through the structure or one-half (0.5) feet
fall for all other types of flow (bends more than twenty-two and one-half
(22.5) deflection angle, multiple lines entering, enlargement transition,
etc.) through the structure.
2.
The desirable minimum fall across the invert is one-half (0.5) feet.
[Ord. No. 2009-23 §5, 9-14-2009]
A.
The
following standards generally apply:
1.
The design of drainage improvements must follow Best Management Practices
(BMPs) to prevent or control the discharge of pollutants to bodies
of water (waters of the U.S.). BMPs may include structural or non-structural
solutions, a schedule of activities, prohibition of specific practices,
maintenance procedures or other management practices. As a minimum,
BMPs should comply with NPDES requirements.
2.
Gravel roadways shall not be accepted.
3.
The City is not required by law to maintain any roadways that fail
to gain written approval and acceptance into the public roadway system.
4.
Prior to gaining acceptance of the work, all shoulders, slopes, ditches
and abutting area shall be shaped, trimmed and cleared of construction-related
debris.
5.
Conflicting regulations. In cases where other regulations
conflict with the roadway acceptance criteria contained herein, the
most stringent regulations apply.
6.
Utility installation. All proposed utilities located
within the newly constructed right-of-way must be completely installed
before a road will be accepted by the City.
