The procedure for submitting the engineering plans and specifications
for the subdivision is stated herein. The Village Engineer shall not
recommend approval of the plans and specifications to the Village
Board of Trustees until all of the information submitted is in accordance
with the standards and procedures herein stated.
All engineering plans and specifications for any subdivision
shall be prepared by the developer's engineer, and before the
complete improvements are approved or accepted by the Village such
engineer shall furnish the Village a completion certificate stating
that such improvements comply with all the requirements of said engineering
plans and specifications. The engineer's certificate must be
accompanied by the appropriate testing data as specified in these
documents. The engineering plans and specifications referred to in
the preceding paragraph shall, after certification by an Illinois-registered
professional engineer and after the approval of the Village Engineer,
constitute part of the official plan of the Village, when applicable.
The engineer who will certify the construction of the improvements
shall not have an ownership interest nor be a regular employee of
the subdivider. The engineer shall furnish the Village Engineer three
paper sets and one electronic (.pdf) copy of approved engineering
plans and specifications prior to starting any construction operations.
The plan sheets shall be 11 inches by 17 inches in size. The minimum
graphic scale shall be one inch equals 50 feet or other scale approved
by the Village Engineer. The plans shall include the following items
as required for the particular development:
A.
Cover sheet depicting the project location and the engineer's
embossed seal and original signature; also see procedures for Village
certificates required;
B.
Topographic map showing existing spot elevation, contours and proposed
contours and proposed spot elevations related to National Geodetic
Vertical Datum of 1988 (mean sea level) with a contour interval not
greater than two feet, on the site and within 100 feet of the boundaries
of the site and for the additional distances needed to adequately
depict the prevailing drainage conditions and directions;
C.
Street and storm sewer plan;
D.
Street and storm sewer profiles;
E.
Sanitary sewer plan;
F.
Sanitary sewer profiles;
G.
Water distribution plan (if water supply by Utilities, Inc. or any
of its successor owner of the Oakwood Potable Water System is proposed,
this data can be shown on the sanitary sewer plan);
H.
Streetlights are to coordinate with fire hydrant and intersection
locations. Plans for layout, design and installation of streetlights,
wiring and all required excess facilities, which includes streetlights,
poles, all devices and materials to install streetlights, shall be
submitted to the Village of Oakwood and the appropriate electrical
utility for approval prior to installation;
I.
Surface swale plan;
J.
Details and general notes.
Provisions shall be made to grant access for future development
of un-platted adjacent land at intervals of not more than 1/4 mile.
This applies to utilities as well as streets.
In the event it is deemed desirable to deviate from these subdivision
standards, the engineer must submit, in writing, a request to the
Village Engineer stating the degree of deviation and the reasons why
such deviation is necessary or desirable. The deviation must be approved
in writing by the Board of Trustees prior to the final design work
and shall apply to that location and point in time only.
The subdivider shall complete the subdivision guarantee as specified
herein. The form of the guarantee shall be as set forth in these documents
or as approved by the Oakwood Village Attorney. The guarantee shall
be in effect for a period of one year from the date of final acceptance
of the subdivision improvements by the Village Board of Trustees.
The guarantee shall be approved by the Board of Trustees or the Oakwood
Village Attorney.
It shall be the duty of the certifying engineer to notify the
Village Engineer at least one day in advance of any starting, suspended,
resumption or completion of each phase of construction work. This
section shall not apply to work suspended by reason of adverse weather
conditions.
The degree of engineering inspection during actual construction
operations shall be 100% during storm sewer, sanitary sewer, water
main, force main, and pavement construction. The inspection shall
be rendered by the developer's engineer or by a person working
under the direction of the developer's engineer. All construction
shall be executed in accordance with the approved engineering plans
and specifications, with an inspector present as stated herein, or
the Village Engineer shall stop all construction operations. Written
periodic progress reports of construction, as compiled by the developer's
engineer, will be required to be delivered to the Village Engineer.
After completion of the project and prior to acceptance by the
Village Board of Trustees, the developer's engineer shall furnish
the Village Engineer with three complete sets of record drawings that
reflect the actual field conditions and data commensurate with how
the improvements were constructed. In addition, the developer's
engineer shall provide the Village Engineer with the AutoCAD or Microstation
files of the development, order to allow the Village Engineer to readily
update the Village Maps without redrawing the development. Each sheet
of the record drawings shall be clearly marked "record drawing" and
dated in the lower right-hand corner. Three copies of the approved
final plat shall accompany these drawings.
A.
General. Private streets or alleys shall not be permitted, except
under special conditions as approved by the Village Engineer and Planning
Commission.
(1)
Minimum dedicated street rights-of-way shall be:
|
Arterial
|
80 feet
|
|
Collector
|
66 feet
|
|
Local and cul-de-sac (short local street)
|
60 feet
|
|
Cul-de-sac radius
|
50 feet
|
(2)
"Arterial streets" and "collector streets" for the purpose of this
section means those streets in the Village and its extraterritorial
jurisdiction which are designated arterial streets or collector streets,
as the case may be, in the Village Comprehensive Official Plan, as
heretofore or hereafter amended.
(3)
The Village Board of Trustees may require different or additional
rights-of-way as needed for arterial streets. Such different or additional
rights-of-way may be required if so provided or recommended by any
of the following documents: Village Comprehensive Official Plan, or
a specific planning document or study performed by the Village, or
any other metropolitan planning organization or joint planning study
or document that establishes necessary rights-of-way for arterial
streets in the Village or in the Village's extraterritorial jurisdiction.
(4)
Pavements for streets shall be either Portland cement concrete pavement
or bituminous concrete pavement in accordance with these standards.
(5)
All pavements shall be constructed with Portland cement concrete
curb and gutter. The shape of the curb and gutter shall conform to
the Village standard curb and gutter Type A (barrier) or Type B (mountable).
(6)
Pavement grades shall be:
|
Minimum
|
0.40%
|
|
Maximum
|
8.00%
|
|
Crown
|
3-inch minimum crown in all pavement
|
(7)
Radii at pavement intersections shall be (measured to back of curb):
|
Arterial and collector thoroughfares
|
25 feet
|
|
Local or minor streets
|
20 feet
|
(8)
All cul-de-sacs shall have a minimum pavement radius of 40 feet (measured
to back of curb) where the entire circle is paved. If a hole is proposed
in the center of the cul-de-sac pavement, the minimum outside pavement
radius shall be 50 feet (measured to back of curb).
(9)
Horizontal curves in streets shall be permitted provided no curve
shall be greater than that approved by the Village Engineer as reasonably
safe for traffic at the particular location of the curve.
(10)
Street jogs with center line offsets of less than 125 feet shall
not be permitted if the same can be reasonably avoided as approved
by the Village Engineer.
(11)
Proposed streets which are obviously in alignment or continuation
of existing streets already named shall bear the name of such existing
streets. In no case shall the name for proposed streets duplicate
existing street names irrespective of the use of the suffix street,
avenue, road, boulevard, drive, place, or court, or an abbreviation
thereof, or minor variations in spelling. In no case shall street
naming be proposed in non-English language verbiage or in (as determined
by the Village Planning Commission) difficult to spell or pronounce
naming. A house numbering system plan shall be compiled by the developer's
engineer and shall submitted to the Village Superintendent of Public
Works for approval. The house numbering system shall be in accordance
with any plan adopted by the Village Board of Trustees.
(12)
Provisions shall be made to grant access for future development
of unplatted adjacent land at intervals of not more than 1/4 mile.
(13)
Blocks shall not be less than 200 feet nor more than 800 feet
in length except as the Planning Commission considers necessary to
secure efficient use of land or desired features of the street pattern.
In blocks 600 feet or more in length, the Planning Commission may
require a public crosswalk for pedestrian travel to extend entirely
across the block at the location deemed necessary. The crosswalk shall
be constructed of Portland cement concrete in conformance with these
standards for sidewalks. The width of the concrete shall be five feet,
and the crosswalk shall be located on a ten-foot easement.
(14)
Cul-de-sacs shall have a maximum length of 600 feet measured
from the center line of the intersecting street to the center of the
turn-around, unless in the opinion of the Village Planning Commission
the topography of the land being subdivided, or the physical situation
of that land, makes such a restriction impractical.
(15)
Where an existing street is adjacent to the subdivision, the
subdivider shall improve the half of the street to conform to these
standards, except that where the existing street is a Village road,
the Planning Commission may waive the requirements for street improvements.
(16)
If any trees are proposed to be planted on any part of the subdivision
devoted to public use, the species of trees and the location thereof
shall be subject to the approval and direction of the Village Engineer
and the Village Board's committee charged with the review of
such items.
(17)
Street signs shall be erected at each street intersection within
the subdivision. Street signs shall be aluminum with galvanized steel
poles, made of materials readily available in the industry, of the
size and type recommended by the Village Engineer.
(18)
Location and design of alleys.
(a)
Alleys shall be provided for all lots or parcels of ground intended
for business, commercial or industrial uses; the Planning Commission
may waive this requirement.
(b)
Alleys may be provided for all lots or parcels of ground intended
for multiple-family residential use.
(c)
Alleys may be provided for lots intended for one- and two-family
residential uses.
(e)
No dead-end alleys will be permitted, except under special conditions
as approved by Village Engineer and Planning Commission.
(f)
No private alleys will be permitted, except under special conditions
as approved by Village engineer and Planning Commission.
(g)
The alley pavement shall be constructed in accordance with these
standards.
(19)
Before final approval all pavements shall be cored for thickness
by the subdivider in the presence of the Village Engineer. Two cores
shall be taken every 500 feet per lane unless deficiencies are encountered.
Requirements in the event of deficient pavement thickness shall be
as follows:
(a)
5% deficiency will be accepted only in isolated areas.
(b)
5.1% to 9.9% deficiency will require the developer to file a
five-year maintenance bond with the Village in addition to other bonds
required.
(c)
10% and over deficiency will be removed and replaced to the
plan thickness or an asphalt overlay constructed as approved by the
Village Engineer (minimum one-inch thickness).
B.
Portland cement concrete pavement.
(1)
Design thickness shall be:
|
Residential areas
|
7-inch nonreinforced with sawed contraction joints at a maximum
of fifteen-foot intervals
|
|
Commercial and industrial areas
|
Minimum thickness 7 inches, pavement designs and thickness in
excess of this minimum for commercial and industrial areas shall be
established utilizing the current Illinois Department of Transportation
Design Standards for the particular situation and as approved by the
Oakwood Village Engineer
|
(2)
Longitudinal construction joints shall be tied with #4 deformed tie
bars, 30 inches long at thirty-inch intervals.
(3)
The concrete shall meet the following requirements:
(a)
Have a minimum compressive strength of not less than 3,500 pounds
per square inch or a minimum modulus of rupture of not less than 650
pounds per square inch at an age of 14 days;
(b)
Have a workable slump approved by the Village Engineer, but
in no instances greater than four inches;
(c)
Mix shall be submitted to the Village Engineer for approval
prior to beginning concrete construction operations; test data must
accompany the mix proportions to verify the strength of the proposed
mix;
(d)
Be field tested for strength by the developer's engineer
or a developer-retained independent testing laboratory during construction
by taking beam or cylinder specimens at a minimum rate of two per
500 feet per lane or two per day, whichever is greater;
(e)
Be cured by standard procedures, as approved by the Village
Engineer;
(f)
Be finished with a finishing machine approved by the Village
Engineer; the machine shall be self-propelled, capable of striking
off, consolidating and finishing the concrete of the consistency required
to the proper crown and grade, or other method approved by the Village
Engineer;
(g)
Be air entrained (4% to 7%) and field-tested to verify this
air entertainment.
(4)
The subgrade shall meet the requirements set forth in the following
section of these standards.
C.
Bituminous pavements.
(1)
Design thickness shall be:
|
Layer
|
Residential Areas
(inches)
|
Commercial and Industrial Areas
|
|---|---|---|
|
Bituminous concrete surface course
|
3
|
The design criteria for the pavement design, and thicknesses
for commercial and industrial areas to be established to achieve the
same structural number not less than 24, resultant from the required
thickness of Portland cement concrete and as approved by the Oakwood
Village Engineer
|
|
Bituminous aggregate mixture base course
|
4 1/2
| |
|
Bituminous concrete surface course
|
1 1/2
| |
|
Bituminous aggregate mixture base course
|
6
| |
|
Bituminous concrete surface course
|
3
| |
|
Soil cement mixture base course
|
6
| |
|
Bituminous concrete surface course
|
1 1/2
| |
|
Aggregate base course type "B"
|
7
| |
|
Plasticized bituminous hot mix seal
|
3/4
| |
|
Bituminous concrete base course
|
1 1/2
| |
|
Aggregate base course type "B"
|
6
|
|
NOTE: Aggregate base course shall be type "B" from § 402
of the current Standard Specifications for Road and Bridge Construction,
Illinois Department of Transportation. The guidelines as set forth
in §§ 402 and 403 of the above-mentioned standards shall
be followed. Base course thicknesses shall be as set forth in the
table above and shall be treated with a bituminous prime coat, 0.50
gallons per square yard, prior to the application of the bituminous
concrete surface course.
|
(2)
The subgrade shall be prepared properly so that after compacting
it will conform to the alignment, grade and cross section shown on
the approved plans. Soft and unstable material that will not compact
shall be removed and replaced with material approved by the Village
Engineer. The entire subgrade shall be compacted to not less than
95% of the standard laboratory density.
(3)
The bituminous concrete surface course, bituminous concrete base
course and plasticized bitumen hot mix seal shall meet the requirements
of the Illinois Department of Transportation.
(4)
The bituminous aggregate mixture base course shall meet the requirements
of the Illinois Department of Transportation.
(5)
The cement aggregate base course shall meet the requirements of the
Illinois Department of Transportation.
(6)
The soil cement mixture base course shall meet the requirements of
the Illinois Department of Transportation.
D.
Concrete curb and gutter.
(1)
The shape shall be IDOT Concrete Curb and Gutter, Type "A" or "B"
as provided for in IDOT's standard details, latest edition.
(3)
The concrete curb and gutter shall be constructed separate or integral,
by hand or machine, as approved by the Village engineer.
(4)
The concrete curb and gutter shall satisfy the requirements of §
616 of the Standard Specifications for Road and Bridge Construction,
Illinois Department of Transportation or as approved by the Oakwood
Village Engineer.
A.
Design.
(1)
All storm sewer systems shall be designed for a minimum five-year
frequency storm. The minimum pipe diameter shall be 10 inches. The
system shall have a free outlet.
(2)
The maximum distance for overland flow of storm water runoff shall
be 600 feet.
(3)
All manholes and catch basins shall be constructed in accordance
with standard details provided by the Village Engineer.
(4)
All design calculations must be submitted to the Village Engineer
for approval. The design shall be in accordance with any other Village
stormwater control and drainage ordinances.
(5)
The maximum distance between manholes shall be as follows. The sewer
shall be constructed in a straight line between manholes:
|
10-inch diameter
|
300 feet
|
|
12-inch to 24-inch diameter
|
350 feet
|
|
Over 24 inch diameter
|
500 feet
|
(6)
Trench backfill requirements shall conform to the applicable portions
of the Standard Specifications for Road and Bridge Construction, Illinois
Department of Transportation and shall be coarse aggregate gradation
CA-6 or CA-10.
(7)
The type of sewer pipe shall be:
(a)
Concrete and/or reinforced concrete pipe;
(b)
Bituminous coated corrugated steel culvert pipe;
(c)
Bituminous coated corrugated aluminum alloy culvert pipe;
(d)
Reinforced concrete pipe (RCCP) type 1;
(e)
High density polyethylene (HDPE) ADS N-12;
(f)
Materials as approved by the Village Engineer and accepted by
the Illinois Department of Transportation Road and Bridge Construction
Manual.
(8)
The strength requirements of the sewer pipe shall conform to the
requirements of the Standard Specifications for Road and Bridge Construction,
Illinois Department of Transportation. The appropriate tests must
be submitted to the Village Engineer to verify the strength of the
pipe used.
(9)
Surface drainage will be permitted for stormwaters where cost estimates
show storm sewers are not economically feasible and topographic conditions
indicate there will be no difficulty from this method of disposal
of stormwaters as approved by the Village Engineer.
(10)
All lots shall be provided with surface drainage swales. Major
swales as designated by the Village Engineer shall also be constructed
with a subsurface drainage tile or tubing encased to the surface with
class "X" washed gravel.
(11)
Stormwater detention facilities shall be constructed as required
and as approved by the Village Engineer.
(12)
All residential lots shall be provided with direct access to
sump drain lines. Such lines shall vary in size in direct proportion
to the number of single-family residential units served. A line potentially
serving one to three units shall be of at least two inches diameter;
potential service to four to six units shall require at least a three-inch
diameter line; potential service to seven to 11 units shall require
at least four-inch diameter line; potential service to 12 to 24 units
shall require at least six-inch diameter line. Pipe material characteristics
and installation shall be subject to the approval of the Village Engineer
and Village Superintendent of Public Works. Maintenance of all sump
drain lines shall be the responsibility of the applicable property
owner, condominium association or homeowners association.
B.
Construction. All construction requirements shall conform to the
applicable sections of the Standard Specifications for Road and Bridge
Construction, Illinois Department of Transportation and Standard Specifications
for Water and Sewer Main Construction in Illinois.
All design, construction and testing related to a sanitary sewer
system proposed to serve a development shall be approved by the owner
of the franchise for the sanitary sewer system for the Village of
Oakwood, Illinois; that being Utilities, Inc. or its successor, except
under special conditions as approved by the Village Engineer and the
Village Planning Commission.
All design, construction and testing related to extensions of
the potable water distribution serving the Village of Oakwood shall
be approved by the owner of the franchise for the potable water system
for the Village of Oakwood, Illinois; that being Utilities, Inc. or
its successor, except under special conditions as approved by the
Village Engineer and the Village Planning Commission.
A.
General.
(1)
Sidewalks shall be installed on both sides of all public streets
and shall run to the back of the curb at each corner lot. Said sidewalks
shall span the entire frontage of all lots. A supplemental bond and/or
different arrangements maybe implemented upon written request of subdivider
to the Village Board of Trustees.
(2)
All sidewalks along the streets shall be installed in the public
right-of-way. The back of the sidewalk shall be one foot inside the
right-of-way, unless, for good cause shown, a variance in location
is approved by the Village Board of Trustees. Sidewalks at the cul-de-sac
terminus of dead end streets may be built adjacent to the curb and
gutter with the approval of the Village engineer.
(3)
The Village Board of Trustees may waive, after review and recommendation
from the Village Engineer, the requirement that the subdivider install
sidewalks in all subdivisions, except those restricted to multifamily
or apartment developments.
(4)
Public crosswalks shall be located within the ten-foot easement as
directed by the Village Engineer. This location shall be dependent
upon the location of proposed utilities within the same easement.
(5)
Americans with Disability Act (ADA)[1] ramps shall be provided at all proposed sidewalks abutting
streets per the latest edition of the Illinois Department of Transportation
(IDOT) Standard Specifications for Road and Bridge Construction and
the Illinois Accessibility Code (ADA) requirements, or as required
and approved by the Village Engineer. Minimum face to face of curb
width on sidewalk ramps shall be five feet.
[1]
Editor's Note: See 42 U.S.C.A. § 12101 et seq.
(6)
Sidewalks shall be installed by subdivider upon completion of construction
on lot.
B.
Design.
(1)
All sidewalks shall be five feet in width.
(2)
All sidewalks shall have a thickness of not less than 5 1/2
inches in any location.
(3)
Pre-molded expansion joints (three-fourths inch thickness) shall
be placed at 100 feet intervals and at all curb intersections or intersections
with other permanent structures.
(4)
All sidewalks shall be hand-grooved at five-foot intervals, and edged
with edging tool.
C.
Construction. All sidewalks shall be concrete and the concrete shall conform to § 242-38B of these standards except:
(1)
A minimum compressive strength shall be 3,000 PSI in 14 days;
(2)
Be field-tested as stated, at the rate of two specimens per 1,200
lineal feet or per day, whichever is greater;
(3)
Be hand-finished or machine-finished in accordance with § 624.07
of the Standard Specifications for Road and Bridge Construction, Illinois
Department of Transportation or as approved by the Village Engineer;
Erosion control measures shall be prepared in accordance with
the standards and requirements contained in the EPA Illinois Urban
Manual, the USEPA Summary Guidance Document 833-R-92-001 and as approved
by the Village Engineer. The developer's engineer shall prepare
a construction site stormwater pollution prevention plan that complies
with Illinois EPA and USEPA rules and guidelines. Developer shall
submit the construction site stormwater pollution prevention plan
for Village Engineer approval. Developer shall submit said plan and
the notice of intent form to Illinois EPA to secure general stormwater
NPDES permit coverage for the construction site activities, under
USEPA Permit No. ILR10.
