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(a) Construction Drawings.
(1) Complete construction drawings on 24” x 36” polyester film mylar, 4-mil thickness, double matte or other approved reproducible media signed and approved by a registered engineer shall be made for all new or reconstructed streets, utilities, and other improvements to be constructed in any subdivision in the City. Said drawings are to be approved by the City before any construction may begin and before the plat of said subdivision may be recorded.
(2) Submission of plans shall comply with the Subdivision Regulations.
(b) Standard Title Block. All plan sheets shall display a standard title block containing the following:
(1) Name, address, telephone number, and fax number (logo optional)
(2) Plan sheet number
(3) Subdivision name
(4) Sheet title
(5) Date
(6) Revision block
(7) Drawn by
(8) Checked by
(c) Required Plan Layout Order.
(1) Title Sheet
(2) Final Plat
(3) Schematic Plan
(4) Typical Sections
(5) General Notes
(6) General Details
(7) Site Grading Plan and Erosion Control Plan/Storm Water Pollution Prevention Plan
(8) Erosion Control Details
(9) Miscellaneous Details (example: Pump Station, Intersection Plan)
(10) Plan and Profile
(11) Cross-Sections
(12) Detention Basin or Retention Pond Plan and Details
(13) Off-site Utilities Plan and Profile (1” = 20’ horizontal, 1” = 5’ vertical)
*Other scales may be used with prior approval.
(1) Title Sheet.
A. Title of Project, City, County, Township, and State.
B. Index of sheets and sheet numbering.
C. Vicinity map with north arrow and project site call-out.
D. City standard drawings reference.
E. Underground utilities note (O.U.P.S.).
F. Signature and stamp.
G. Date of finished plans.
H. Project description.
I. Approval plan signatures.
J. Name, address, telephone number, and fax number of firm that plans are prepared by.
(2) Final Plat.
A. Copy of approved final plat.
B. See Subdivision Regulations.
(3) Schematic Plan - Large Scale Layout of Site.
A. At a measurable scale to show the whole site on one sheet
(max. scale 1” = 100’).
B. Show right-of-way, property lines and roadway, lot numbers, street names, and existing adjoining property lines and owners.
C. Show proposed utilities and numbering of sanitary and storm manholes and catch basins.
D. Stationing of intersections and streets.
E. Multi-baseline legend, (sheet number, stationing, description, etc.)
F. North arrow and scale.
G. Benchmarks and locations.
H. Centerline stationing.
(4) Typical Sections.
A. Detailed labeling.
B. Legend of pavement composition.
C. Limiting stations for each section.
D. Dimensioning, pavement, curb and gutter, curb lawn, sidewalk, right-of-way, and pavement slopes.
(5) General Notes. All notes necessary for construction which are not defined clearly elsewhere within the plans.
(6) General Details.
A. All details necessary for construction which are not represented by City of Urbana Standard Drawings.
B. Modified City of Urbana Standard Drawings shall be redrawn for approval.
(7) Site grading plan and erosion control plan/storm water pollution prevention plan.
Site Grading Plan
A. A final site grading plan must be included with the construction drawings and approved by the City.
B. Proposed 1-foot contours showing all lots having proper drainage.
Storm Water Pollution Prevention Plan
A Storm Water Pollution Prevention Plan will be required to be included with the construction drawings and approved by the City. This plan shall follow OEPA and NPDES permit requirements and shall be submitted to and approved by OEPA prior to construction.
A. Show and label existing and proposed 1-foot contours.
B. Proposed storm manholes, catch basins, pipes, etc., labeled and numbered.
C. Concentrated flows.
D. Property lines, right-of-way, lot numbers, and owners.
E. Proposed/existing roadways.
F. Proposed diversions and erosion control (Example: diversion ditches, fabric fence, straw bales, sediment basin).
G. Erosion control construction sequence list.
H. Limits of grading.
I. Proposed storm sewer pipe flows and capacities.
J. Sediment basin location.
K. North arrow scale.
L. At a measurable scale to show the entire site on one sheet (maximum scale 1” = 100’).
(8) Erosion control details. Any details necessary for construction which are not represented by City of Urbana Standard Drawings.
(9) Miscellaneous details. (Example: Pump Station, Intersection Plan, etc.) Plans shall include a detailed drawing with all proper labeling and dimensions.
(10) Plan and profile.
A. The plan and profile shall be at a scale of 1” = 20’ horizontal, 1” = 5’ vertical.
B. Plan and profile sheets shall show all necessary data in sufficient detail for the complete construction of all work and improvements to be made in the plat.
C. All grade elevations shall be based on U.S.G.S. and City of Urbana datum.
D. Plan and profile sheets will be required for all off-site utility extensions.
E. More specifically, all plans and profile sheets must show and include the following items:
(10A) General - Plan.
A. Show all proposed lots, streets, curbs, etc.
B. Show all existing pavements, headwalls, piers, utilities, mailboxes, trees, etc.
C. Typical street and curb sections.
D. Construction notes.
E. Structural details.
F. North arrow (preferably up or to the right) and scale (horizontal and vertical).
G. Street names.
H. Centerline stations and ticks every 100 feet (south to north and west to east where possible).
I. Easements for utilities and storm drainage.
J. Lot numbers, dimensions, and frontage.
K. Curb radius at intersections with back of curb elevations at quarter points (if not covered in separate intersection detail).
L. Curve data: radius, delta, chord length, chord bearing, arc length, station of PC, PT, PCC, PI, PRC.
M. Sheet reference.
N. Plat section lines (boundary lines) showing stations.
O. Dimension and station utility locations.
P. Centerline bearings and/or intersecting centerline angles.
Q. Final monument box call-outs set at PC, PT, PCC, PI, PRC (in pavement) intersections.
R. Drive apron stationing and width call-outs.
S. Show all existing features within 50 feet of right-of-way.
T. Proposed electric, telephone, gas, cable locations, and easements.
U. Proposed light pole layout and electric feed.
V. Match lines with stationing.
W. Intersection elevation for proper storm water drainage.
X. Benchmarks.
(10B) General - Profile.
A. Existing centerline and proposed centerline profile.
B. Label proposed centerline grades (minimum grade 0.50%).
C. Show all mainline existing utilities.
D. Existing and proposed grade elevations every 25 feet (existing elevation on bottom of sheet and proposed elevation on top of sheet. Note as to centerline or top of curb.)
E. Show and label all vertical curves (Stations, elevations, and length).
(10C) Storm Sewer - Plan.
A. Show and station, with offsets, the proposed storm sewers: manholes, laterals, catch basins, headwalls, etc.
B. Label each pipe size and type.
C. Number proposed storm manholes and catch basins.
(10D) Storm Sewer - Profile.
A. Show length of span, size, grade, and class and/or type of proposed pipe.
B. Label existing pipe size and type.
C. Existing and proposed storm.
1. Label existing and proposed mainline storm water manholes, junction boxes, catch basins, etc., and show centerline of streets and stations of each.
2. Show invert elevations of all pipe at manholes, headwalls, junction boxes, catch basins, etc.
3. Show elevation on top of manhole or catch basin.
4. Number proposed storm manholes and catch basins.
(10E) Water - Plan.
A. Show and station with offsets the proposed waterline, laterals, deflection points, hydrants, valves, etc.
B. Label pipe size, tees, crosses, etc.
C. Station above items.
(10F) Water - Profile.
A. Show length, size, depth, and class and/or type of pipe.
B. Show deflection points.
C. Show stations and any critical elevations for above items.
D. Label minimum coverage of water main.
(10G) Sanitary Sewer - Plan.
A. Show sanitary sewers, manholes, laterals, cleanouts, etc. with station and offset labeled.
B. Label each pipe size.
C. Number proposed sanitary manholes and cleanouts.
(10H) Sanitary Sewer - Profile.
A. Show length of span, size, grade, and class and/or type of proposed pipe.
B. Show existing and proposed sanitary.
C. Show invert elevation of all pipe at manholes.
D. Show top elevations of manholes.
E. Number proposed sanitary manholes and clean-outs.
(11) Cross-sections.
A. The cross-sections shall be at a scale of 1” = 5’ horizontal, 1” = 5’ vertical.
B. Cross-sections shall be every 50 feet and at other critical areas.
C. Show all existing utilities with labels.
D. Show all proposed utilities with labels.
E. Show all proposed and existing roadway sections with existing and proposed centerline elevation.
F. Cross-sections at each drive and intersection roadway.
(12) Detention basin or retention pond plan and details. Detailed site plan including inlet and outlet elevations, top of bank elevations, and emergency overflow elevations.
(13) Off-site utilities plan and profile. Refer to subsection (c)(10) Plan and Profile.
SUBDIVISION CONSTRUCTION PLANS
CHECKLIST
SUBDIVISION ________________________________ DATE _____________
DESCRIPTION | REMARKS | |
REQUIRED PLAN LAYOUT ORDER | ||
Title Sheet | ||
Final Plat | ||
Schematic Plan | ||
Typical Sections | ||
General Notes | ||
General Details | ||
Site Grading and Erosion Control Plan | ||
Erosion Control Details | ||
Misc. Details (e.g. pump station, intersection plan) | ||
Plan and Profile (1”=20’ horizontal, 1”=5’ vertical) | ||
Cross-Sections (1”=5’ horizontal, 1” = 5’ vertical) | ||
Detention Basin or Retention Pond Plan and Details | ||
Off-Site Utilities Plan and Profile (1”=20’ horizontal, 1” = 5’ vertical) | ||
DESCRIPTION | REMARKS | |
GENERAL |
Acceptable natural drainage and erosion control | ||
Right-of-way widths meet minimum criteria | ||
Pavement widths | ||
Radius of curvature | ||
Horizontal visibility | ||
Vertical alignment and visibility | ||
Grades | ||
Cul-de-sacs | ||
Turn around radius, right-of-way, and pavement | ||
Dead-end streets | ||
Alignment of intersection | ||
Space of intersection relative to difference in road classifications | ||
Avoidance of multiple intersection | ||
Pavement and right-of-way of intersection | ||
Streets for commercial subdivisions | ||
Repair of pavements
| ||
Streets for industrial subdivision | ||
Lengths of blocks meet minimum criteria | ||
Crosswalks | ||
Street Monuments | ||
Subgrade | ||
Base Course | ||
Surface Course | ||
Grading Plan | ||
Storm drainage system type | ||
Manholes | ||
Catch basins | ||
Headwalls | ||
Sufficient easements for utilities or open drainage | ||
Other utilities | ||
Underground utilities | ||
1. | TITLE SHEET | |
Title of Project, City, County, Township, State | ||
Index of sheets and sheet numbering | ||
Vicinity map with north arrow and project site callout | ||
City Standard Drawings reference | ||
Underground utilities note (O.U.P.S.) | ||
Signature and stamp | ||
Date of finished plans | ||
Project description | ||
Approval plan signatures | ||
Name, address, telephone number, and fax number of firm that plans are prepared by | ||
2. | FINAL PLAT | |
Copy of approved final plat | ||
See Subdivision Regulations
| ||
DESCRIPTION | REMARKS | |
3. | SCHEMATIC PLAN - LARGE SCALE LAYOUT OF THE SITE | |
At a measurable scale to show the whole site on one sheet (max. scale 1” = 100’) | ||
Show right-of-way, property lines, roadway, lot numbers, street names, and existing adjoining property lines and owners | ||
Show proposed utilities and numbering of sanitary and storm manholes and catch basins | ||
Stationing of intersections and streets | ||
Multi-baseline legend, (sheet number, stationing, description, etc.) | ||
North arrow and scale | ||
Benchmarks and locations | ||
Centerline stationing | ||
4. | TYPICAL SECTION | |
Detailed labeling | ||
Legend of pavement composition | ||
Limiting stations for each section | ||
Dimensioning, pavement, curb and gutter, curb lawn, sidewalk, right-of-way, and pavement slopes | ||
5. | GENERAL NOTES | |
All notes necessary for construction which are not defined clearly elsewhere within the plans | ||
6. | GENERAL DETAILS | |
All details necessary for construction which are not represented by City of Urbana Standard Drawings | ||
Modified City of Urbana Standard Drawings shall be redrawn for approval | ||
DESCRIPTION | REMARKS | |
7. | SITE GRADING PLAN AND EROSION CONTROL | |
A final site grading plan must be included with the construction drawings and approved by the City | ||
Proposed 1-foot contours showing all lots having proper drainage | ||
A Storm Water Pollution Prevention Plan will be required to be included with the construction drawings and approved by the City. This plan shall follow the OEPA and NPDES permit requirements and shall be submitted to and approved by OEPA prior to construction | ||
Show and label existing and proposed 1-foot contours | ||
Proposed storm manholes, catch basins, pipes, etc., labeled and numbered | ||
Concentrated flows | ||
Property lines, right-of-way, lot numbers, and owners | ||
Proposed/existing roadways | ||
Proposed diversions and erosion control (e.g. diversion ditches, fabric fence, straw bales, sediment basins.) | ||
Erosion control construction sequence list | ||
Limits of grading | ||
Proposed storm sewer pipe flows and capacities | ||
Sediment basin location | ||
North arrow and scale | ||
At a measurable scale to show the whole site on one sheet (Maximum scale 1” = 100’) | ||
8. | EROSION CONTROL DETAILS | |
Any details necessary for construction which are not represented by the City of Urbana Standard Drawings | ||
9. | MISC. DETAILS (e.g. pump station, intersection plan etc.) | |
Shall include a detail drawing with all proper labeling and dimensioning | ||
DESCRIPTION | REMARKS | |
10. | PLAN AND PROFILE | |
Use a scale of 1” = 20’ horizontal, 1”=5’ vertical | ||
Show all necessary data in sufficient detail for the complete construction of all work and improvements to be made in the plat | ||
All grade elevations shall be based on U.S.G.S. and City of Urbana datum | ||
Plan and profile sheets are required for all off- site utility extensions | ||
10A | GENERAL - PLAN | |
Show all proposed lots, streets, curbs, etc. | ||
Show all existing pavements, headwalls, piers, utilities, mailboxes, trees, etc. | ||
Typical street and curb sections | ||
Construction notes | ||
Structural details | ||
North arrow (preferably up or to the right) and scale (horizontal and vertical) | ||
Street names | ||
Centerline stations and ticks every 100 feet (south to north and west to east where possible) | ||
Easements for utilities and storm drainage | ||
Pavements and right-of-way widths | ||
Lot numbers, dimensions, and frontage | ||
Curb radius and intersections with back of curb elevations at quarter points (if not covered in separate intersection detail) | ||
Curve data: radius, delta, chord length, chord bearing, arc length, station of PC, PT, PCC, PI, PRC | ||
Sheet reference | ||
Plat section lines (boundary lines) showing stations | ||
Dimension and station utility locations | ||
Centerline bearings and/or intersecting centerline angles | ||
Final monument box call-outs set at PC, PT, PCC, PI, PRC (in pavement) intersections | ||
Drive apron stationing and width call-outs | ||
Show all existing features within 50 feet of right- of-way | ||
Proposed electric, telephone, gas, cable locations, and easements | ||
Proposed light pole layout and electric feed | ||
Match lines with stationing | ||
Intersection elevation for proper storm water drainage | ||
Benchmarks | ||
DESCRIPTION | REMARKS | |
10B | GENERAL - PROFILE | |
Existing centerline and proposed centerline profile | ||
Label proposed centerline grades (minimum grade 0.50%) | ||
Show all mainline existing utilities | ||
Existing and proposed grade elevations every 25 feet (existing elevation on bottom of sheet and proposed elevation on top of sheet. Note as to centerline or top of curb.) | ||
Show and label all vertical curves (stations, elevations, and length) | ||
10C | STORM SEWER - PLAN | |
Show and station, with offsets, the proposed storm sewers: manholes, laterals, catch basins, headwalls, etc. | ||
Label each pipe size and type | ||
Number storm manholes and catch basins. | ||
10D | STORM SEWER - PROFILE | |
Show length of span, size, grade, and class and/or type of proposed pipe | ||
Label existing pipe size and type | ||
Label existing and proposed storm water manholes, junction boxes, catch basins, etc., and show centerline of streets and stations of each | ||
Show invert elevations of all pipe at manholes, headwalls, junction boxes, catch basins, etc. | ||
Show elevation on top of manhole or catch basin | ||
Number proposed storm manholes and catch basins | ||
DESCRIPTION | REMARKS | |
10E | WATER - PLAN | |
Show and station, with offsets, the proposed waterline, laterals, deflection points, hydrants, valves, etc. | ||
Label pipe size, tees, crosses, etc. | ||
Station above items | ||
10F | WATER - PROFILE | |
Show length, size, depth, and class and/or type of pipe | ||
Show deflection points | ||
Show stations and any critical elevations for above items | ||
Label minimum coverage of water main | ||
10G | SANITARY SEWER - PLAN | |
Show sanitary sewers, manholes, laterals, cleanouts, etc. with station and offset labeled | ||
Label each pipe size | ||
Number proposed sanitary manholes and cleanouts | ||
10H | SANITARY SEWER - PROFILE | |
Show length of span, size, grade, and class and/or type of proposed pipe | ||
Show existing and proposed sanitary | ||
Show invert elevation of all pipe at manholes | ||
Show top elevations of manholes | ||
Number proposed sanitary manholes and cleanouts | ||
11. | CROSS-SECTIONS | |
Cross-sections shall be at a scale of 1”=5’ horizontal, 1”=5’ vertical | ||
Cross-sections shall be every 50 feet and at other critical areas | ||
Show all existing utilities with labels | ||
Show all proposed utilities with labels | ||
Show all proposed and existing roadway sections with existing and proposed centerline elevations | ||
Cross-section at each drive and intersection roadway | ||
12. | DETENTION BASIN OR RETENTION POND | |
Detailed site plan including inlet and outlet elevations, top of bank elevations, and emergency overflow elevations. | ||
13. | OFF-SITE | |
Refer to Page subsection (c)(10) Plan and Profile. | ||
(Ord. 4206. Passed 1-24-06.)
At the completion of construction, the original shall be revised as necessary to provide “Record Drawings”. This work shall be done by the Developer/Owner’s engineer, who was responsible for setting grades and staking for improvements. The “Record Drawings” shall include the following information:
(a) Location of all water and sanitary services as well as storm outlets if provided.
(b) Final elevations and locations of the following:
(1) Storm sewer inlets, outlets, and manholes with all inverts
(2) Drainage swales, detention basins including structures with all elevations, and capacity recalculated
(3) Sanitary sewer manholes, inverts, and lateral locations
(4) Curb, gutter, centerline elevations at locations where the roadway ends and the potential for future roadway expansion exists.
(c) Location of any changes in street, water, sanitary, or storm from design to completed construction.
(d) The original and any computer drawings shall become the property of the City.
(Ord. 4206. Passed 1-24-06.)
Interpretation of Terms or Words
Regardless of capitalization, definitions are standard for the intent of these Design Criteria.
AASHTO
American Association of State Highway and Transportation Officials
ANSI
American National Standard Institute
APHA
American Public Health Association
ASCE
American Society of Civil Engineers
ASTM
American Society for Testing and Materials
AVERAGE DAILY FLOW
The total quantity of liquid tributary to a point divided by the number of days of flow measurement.
AWWA
American Water Works Association
BEDDING
The earth or other materials on which a pipe or conduit is supported.
CATCH BASIN
A structure intended to collect surface runoff and direct it into the storm sewer system.
COLLECTOR SEWER
A sewer normally less than 15 inches in diameter that receives wastewater from the sanitary laterals and transports it to the interceptor sewer.
CORPORATION STOP
The fixture tapped into a water main to connect a service to the main.
CRITICAL DEPTH
The depth at which point the control for determining the headwater for culverts changes.
CROSS-CONNECTION
(a) A physical connection through which a supply of potable water could be contaminated or polluted.
(b) A connection between a supervised potable water supply and an unsupervised supply of unknown potability.
CULVERT
A structure which allows surface runoff to flow through a roadway fill or similar obstruction of open flow. Culverts may be corrugated metal pipe, reinforced concrete, etc.
CURB INLET
A specialized catch basin (see catch basin) designed to collect runoff from pavement with curbing.
DESIGN STORM
The expected frequency of the storm for which the capacity of a structure will be equaled or exceeded. The capacity of a storm sewer designed for a 10-year storm has a 1 in 10 chance of being equaled or exceeded in any given year.
DETENTION/RETENTION
The term detention/retention basin refers to the use of a storm water storage facility which will store storm water and release it at a given rate. The objective of a detention/retention facility is to regulate the rate of runoff and control the peak discharges to reduce the impact on the downstream drainage system.
Type of Storm Water Storage Facilities:
(a) Detention Basin or Dry Basin - Dry basins are surface storage areas created by constructing a typical excavated or embankment basin.
(b) Retention Basins or Ponds - Retention basins are permanent ponds where additional storage capacity is provided above the normal water level.
(c) Parking Lot Storage - Parking lot storage is a surface storage facility where an inlet is undersized causing shallow ponding to occur in specific graded areas of the parking lot.
(d) Subsurface Storage - Subsurface storage is a structure constructed below grade for the specific purpose of detaining storm water runoff.
DISCHARGE
The amount of flow carried by a sanitary sewer, culvert, or storm sewer, normally measured in cubic feet per second.
DRAINAGE AREA
The area, in acres, which drains to a particular catch basin, culvert, or similar structure.
DROP MANHOLE
A manhole installed in a sewer where the elevation of the incoming sewer considerably exceeds that of the outgoing sewer; a vertical waterway outside the manhole is provided to divert the wastewater from the upper to the lower level so that it does not fall freely into the manhole except at peak rate of flow.
EARTH-DISTURBING ACTIVITY
Any grading, excavating, filling, or other alteration of the earth’s surface where natural or manmade ground cover is destroyed and which may result in or contribute to erosion and sediment pollution.
ENERGY GRADIENT
The slope of the energy line of a body of flowing water with reference to a datum plane.
ENERGY GRADIENT LINE
The line representing the gradient which joins the elevation of the energy head.
ENERGY HEAD
The height of the hydraulic grade line above the centerline of a conduit plus the velocity head of the mean velocity of the water in that section.
ENERGY LINE
A line joining the elevation of the energy heads; a line drawn above the hydraulic grade line by a distance equivalent to the velocity head of the flowing water at each section along a stream, channel, or conduit.
EROSION
(a) The wearing away of the land surface by running water, wind, ice, or other geological agents, including such processes as gravitational creep.
(b) Detachment and movement of soil or rock fragments by wind, water, ice, or gravity.
(c) Erosion includes:
(1) Accelerated erosion: Erosion much more rapid than normal, natural or geologic erosion, primarily as a result of the influence of the activities of man.
(2) Floodplain erosion: Abrading and wearing away of the nearly level land situated on either side of a channel due to overflow flooding.
(3) Gully erosion: The erosion process whereby water accumulates in narrow channels during and immediately after rainfall or snow or ice melt and actively removes the soil from this narrow area to considerable depths such that the channel would not be obliterated by normal smoothing or tillage operations.
(4) Natural erosion (geological erosion): Wearing away of the earth’s surface by water, ice, or other natural environmental conditions of climate, vegetation, etc., undisturbed by man.
(5) Normal erosion: The gradual erosion of land used by man which does not greatly exceed natural erosion.
(6) Rill erosion: An erosion process in which numerous small channels only several inches deep are formed; occurs mainly on recently disturbed soils.
(7) Sheet erosion: The removal of a fairly uniform layer of soil from the land surface by wind or runoff water.
EXFILTRATION
The quantity of wastewater which leaks to the surrounding ground through unintentional openings in a sewer. Also, the process whereby this leaking occurs.
FIRE HYDRANT
A fixture installed throughout urban water distribution systems to provide water for the fire fighting needs.
GRASSED WATERWAY
A broad or shallow natural course or constructed channel covered with erosion-resistant grasses or similar vegetative cover and used to conduct surface water.
HEADWALL
A structure placed at the ends of a culvert to prevent movement of the culvert and reduce erosion.
HEADWATER
The vertical distance from a culvert invert at the entrance to the water surface upstream from the culvert.
HOUSE CONNECTION
The pipe carrying the wastewater from the building to a common sewer. Also called building sewer, house sewer, or sanitary lateral. The house connection begins at the outer face of the building wall.
HOUSE SEWER
A pipe conveying wastewater from a single building to a common sewer or point of immediate disposal. (See House Connection)
INFILTRATION
The discharge of ground waters into sewers, through defects in pipe lines, joints, manholes, or other sewer structures.
INFILTRATION/INFLOW
A combination of inflow wastewater volumes in sewer lines with no way to distinguish either of the two basic sources, and with the same effect as surcharging capacities of sewer systems and other sewer system facilities.
INFLOW
The discharge of any kind of water into sewer lines from such sources as roof leaders, cellars, sump pumps and yard-area drains, foundation drains, commercial and industrial so- called “clean water” discharges, drains from springs and swampy areas, etc. It does not “infiltrate” into the system and is distinguished from such wastewater discharge, as previously defined.
INLET CONTROL
A situation where the discharge capacity of a culvert is controlled at the culvert entrance by the depth of headwater and the entrance geometry, including the area, shape, and type of inlet edge.
INTERCEPTOR SEWER
A sewer which receives the flow from collector sewers and conveys the wastewater to treatment facilities.
JOINTS
The means of connecting sectional lengths of sewer pipe into a continuous sewer line using various types of jointing materials with various types of pipe formations that make possible the jointing of the sections of the pipe into a continuous collecting sewer line. The number of joints depends on the lengths of the pipe sections used in the specific sewer construction work.
JURISDICTION
Any governmental entity, such as town, City, county, sewer district, sanitary district or authority, or other multi-community agency which is responsible for and operates sewer systems, pumping facilities, regulator-overflow structures, and wastewater treatment works.
MAIN
The large water-carrying pipe to which individual user services are connected. Mains are normally connected to each other in a grid-type system.
MAIN SEWER
In larger systems, the principal sewer to which branch sewers and submains are tributary, are also called trunk sewer. In small systems, a sewer to which one or more branch sewers are tributary.
MANHOLE
An opening in a sewer provided for the purpose of permitting a man to enter or have access to the sewer.
MANNING ROUGHNESS COEFFICIENT
The roughness coefficient in the Manning Formula for determination of the discharge coefficient in the Chezy Formula.
METER
The flow-measuring device installed at each service on a distribution system to measure the amount of water consumed by users at that service.
NSF
National Sanitation Foundation
NORMAL DEPTH
The depth at which water will flow in a pipe or channel by virtue of its slope and roughness, based on the Manning formula.
OEPA
Ohio Environmental Protection Agency
OUTLET CONTROL
A situation where the discharge capacity of a culvert is controlled by the barrel of the culvert, rather than the inlet.
OVERFLOW
A pipe line or conduit device, together with an outlet pipe, which provides for the discharge of a portion of sewer flow into receiving water or other points of disposal.
PEAK
The maximum quantity that occurs over a relatively short period of time. Also called peak demand, peak load.
RAINFALL INTENSITY
The amount of rain falling over a specified period of time. Rainfall intensity is usually measured in inches per hour.
RATIONAL FORMULA
The method used to determine the amount of runoff from a specified area of known surface characteristics.
RUNOFF COEFFICIENT
A coefficient used in the Rational Formula to express the ratio of runoff to rainfall.
SANITARY SEWER LATERAL
The sewer line extending from the public sewer to the nearest property line of the property to be served.
SANITARY WASTEWATER
(a) Domestic wastewater with storm and surface water excluded.
(b) Wastewater discharging from the sanitary conveniences of dwellings (including apartment houses and hotels), office buildings, industrial plants, or institutions.
(c) The water supply of a community after it has been used and discharged into a sewer.
(d) See Ordinance 72-19 dated November 20, 1972 for further explanation.
SEDIMENT
Solid material both mineral and organic, that is in suspension, is being transported, or has been moved from its site of origin by wind, water, gravity, or ice, and has come to rest on the earth’s surface above or below sea level.
SEDIMENT BASIN
Barrier, dam, or other suitable detention facility built across an area of waterflow to settle and retain sediment carried by the runoff waters.
SEDIMENT CONTROL PLAN
A written description, acceptable to the approving agency, of methods for controlling sediment pollution from accelerated erosion on a development area of 5 or more contiguous acres or from erosion caused by accelerated runoff from a development area of 5 or more contiguous acres.
SEDIMENT POLLUTION
Failure to use management or conservation practices to abate wind or water erosion of the soil or to abate the degradation of the waters of the state by soil sediment in conjunction with land grading, excavating, filling, or other soil-disturbing activities on land used or being developed for commercial, industrial, residential, or other purposes.
SERVICE
The pipe carrying water to individual houses or other users on a distribution system.
TAILWATER
The vertical distance from a culvert invert at the outlet to the water surface downstream from the culvert.
TIME OF CONCENTRATION
The time for water to reach a certain point in the drainage area. In the case of gutter flow, the time of concentration includes the time to the gutter and the time of flow in the gutter to a specified point.
(Ord. 4206. Passed 1-24-06.)
All street design and layout shall follow the City of Urbana Construction Standards and Drawings; ODOT Location and Design Manual, Volume One, Roadway Design, latest version; and AASHTO. The most restrictive shall apply as determined by the City Engineer. These criteria cover design factors and provide guidelines for evaluations of plans and specifications by the political subdivisions having jurisdiction over the review of the plans and specifications. The design shall be consistent with the requirements of AASHTO and ODOT.
(Ord. 4206. Passed 1-24-06.)
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