DRAINAGE & DESIGN OF DRAINAGE SYSTEM

Size: px
Start display at page:

Download "DRAINAGE & DESIGN OF DRAINAGE SYSTEM"

Transcription

1 Drainage on Highways DRAINAGE & DESIGN OF DRAINAGE SYSTEM P. R.D. Fernando Chartered Engineer B.Sc.(Hons), M.Eng. C.Eng., MIE(SL) Drainage Requirement of Highway Drainage System Introduction Drainage means the removal of excess water from given place. One of the major cause of deterioration of highway is water. The process of removing & controlling the excess surface and sub soil water within the ROW is known as Highway drainage. Thus, drainage is an integral part of the highway design and construction. The drainage system of highway should fulfil the following requirements; The surface water from CW & shoulder should be drained off effectively without penetrating in the pavement layers. The surface water from the adjoining lands should not be allowed to enter the roadway. The side drains should have sufficient capacity to discharge maximum surface water collected in the region. Control of under ground water and height of water table. 1

2 Inadequate Drainage Classification of Drainage Damage to highway structures Loss of capacity Visibility problems with spray and loss of reflectivity Safety problems, reduction friction and hydroplaning. Surface Drainage Removal of Surface water and diverted to a natural channel (Cross-fall, Highway Gutters, Inlets, channel etc;). Sub-surface Drainage (Sub Soil Drainage) Seeping or sub surface water is intercepted and remove to natural channel (Pipe, filter material, channel etc;). Cross Drainage Water of natural drainage under the highway is intercepted and disposed off (culverts, bridges etc;). Road Damaged due to water Surface Drainage Mainly rainwater provide surface drainage requirement. Surface drainage is consisted of road plus Inland flow. Road surface water is removed by providing cross slope to the highway surface. 2

3 Surface Drainage Surface Drainage of Rural Area Surface Drainage on Road Pavement Transverse slopes (cross falls) Remove water from pavement surface Facilitate by cross-section element (cross slope, shoulder slope) Longitudinal slope (gradient) Minimum gradient of VA to maintain (minimum 0.3%) Adequate slope in longitudinal channel Longitudinal channels Ditches along side of road to collect surface water after runoff (highway gutters, open channel, hume pipe). Common practice to allow the road surface water to flow across the CW and shoulder. Generally the side drains are unlined and trapezoidal shape. Surface Drainage Surface Drainage of Urban Area Transverse slope Longitudinal Channel Longitudinal slope Highway Gutter Gutters are channels at the edges of the pavement or the shoulder formed by a kerb or shallow depression. The longitudinal grade of the gutter must also be sufficient to facilitate rapid removal of the road surface water. The grade of the gutter is usually the same as that of the vertical alignment grade. Shape is triangle. 3

4 Surface Drainage of Urban Area Surface Drainage of Urban Area Types of Inlets Graded Inlets Kerb Opening Inlets Combination of Grade & Kerb Opening Graded Inlet Surface water is taken through underground or open longitudinal drains is known as storm drains (SD). Surface water enters the SD through grating inlet or kerb inlets or combination of both. Kerb Inlet Combined Inlet Surface Drainage of Urban Area Cross Drainage Inlets Inlets are generally provided at intersection/townships to intercept the water flowing in highway gutter. It is essential that enough inlets of sufficient size be provided to rapidly remove collected storm water such that not exceed the gutter capacity for the limited ponded widths. When the highway cross a rive or stream, cross drainage works have to be provided. Sometime water from side drains is diverted away from the road through cross drains. On Highways, usually culverts & Bridges are used as cross water way. 4

5 Subsurface Drain Sub-Surface Drainage - Open Drains The change in moisture content of soil reduces its bearing capacity to great extent. Change in moisture content of SG are caused by the fluctuation of ground water table, seepage flow, percolation of rain water, capillary water etc; Thus, the aim of the sub drainage of highway is to prevent changes in the moisture content of the sub grade. Ditches (open drain) have lower initial cost than buried drains. ease of inspection. Ditches, however, reduce the land available for cropping and require more maintenance that drains due to weed growth and erosion. Sub-surface Drainage Systems Sub-Surface Drainage - Buried Drains Sub-surface drainage (sub drainage) is the control of groundwater below the soil surface. It aims at increasing the rate at which water will drain from the soil, and so lowering the water table. Sub drains are necessary part of the complete drainage system for many highways in rural areas, and they function along with adequate surface drainage system. Buried drains refer to any type of buried conduits having open joints or perforations, which collect and convey drainage water. They can be fabricated from clay, concrete, corrugated plastic tubes or any other suitable material. The drains can be arranged in a parallel to the CL or random fashion. Sub-surface drainage can be done by open drain or buried drains. 5

6 Sub-Surface Drainage - Buried Drains Sub-surface Drainage Systems Symmetrical Longitudinal Drains Used to Lower Water Table Sub-Surface Drainage - Buried Drains A Trench is excavated, the pipe is laid at a suitable depth in the trench, permeable fill (granular material) is added, and then the trench is filled. Perforated PVC pipe is Commonly used as pipe. The slope of the pipe should be sufficient to prevent the depositions of any solid material which may enter the pipe through the joint or perforation. Minimum recommended slope is percent. Hydraulic design of sub drains is difficult. Design of Road Drainage 6

7 Surface Drainage System Design Rational Method Three phases 1. Estimate of the quantity of water to reach the system 2. Hydraulic design of system elements 3. Comparison of different materials that serve same purpose General Use Rational method generally used for small drainage basins Do not use the rational method for drainage areas larger than 300 acres Rational method not applicable if there is significant ponding (ponds, wetlands) within the drainage area Estimation of Peak Run-off Rational Method Different Methods for Estimation of peak Run-off several methods have been developed to estimate peak runoff. Rational Method was adopted. Q = FICA Q = Maximum discharge in m 3 /s I = Average rainfall intensity in mm/hr C = Run-off co-efficient (ratio of surface runoff to rainfall) A = Area of catchments F = Factor of proportionality, which depends on the units F= 0.278, when A is in km 2 & I is in mm /hr F= , when A is in hectares & I is in mm/hr Assumptions Rainfall intensity is uniform over the drainage basin during the duration equal to or the time of concentration. The impermeability of the catchments area remains constant. The peak flow is assumed to occur when the entire watershed is contributing runoff. The peak flow recurrence interval is assumed to be equal to the rainfall intensity recurrence interval. In other words, the 10-year rainfall intensity is assumed to produce the 10-year flood. 7

8 Using the Rational Method (Q = FICA) Estimate intensity using the IDF curve (I). Determine the runoff coefficient (C). Obtain area of catchment by surveying or from maps or aerial photographs (A). Recurrence Interval (Design Event) 2-year interval Design of intakes and the spread of water on the pavement for secondary roads. 10-year interval Design of intakes and spread of water on the pavement on primary network of national highways and for design of small storm water drains 25 year interval Design of major storm water lines and design of culverts and small bridges 100 year interval Major bridges Rainfall Intensity (I) Rainfall Intensity, Duration & Frequency Curve (IDF Curve) The rainfall intensity used in the rational method is based on a specific rainfall duration and recurrence interval. The recurrence used depends on the importance of the project. The rainfall intensity can be determined from an intensity-duration-recurrence interval chart (IDF). 8

9 Rainfall Intensity, Duration & Frequency Curve (IDF Curve) Runoff Coefficient (C) The runoff coefficient (C) is defined as the ratio of the peak runoff rate to the rainfall intensity. The runoff coefficient mathematically indicates whether the runoff is likely to be high or low for the flow surface. The value of C depends on the type and characteristics of the surface. Values for C are usually determined from tables or charts. Duration (Minutes) Basic Steps to Estimate Peak Flow (Rational Method) Runoff Coefficient 1. Estimate time of concentration Overland (sheet) flow Shallow concentrated flow Open channel flow 2. Choose a value of C 3. Select a frequency (return period) 4. Determine the average storm intensity from IDF Curve 5. Use rational method equation to estimate peak flow 9

10 Runoff Coefficient, C Time of Concentration, Tc When a drainage area has distinct parts with different coefficients (C values). Use weighted average C1A1 C2 A2... Cn A C A A... A 1 2 n n Time required for runoff to travel from the hydraulically most distant point on a watershed to another point of interest within the watershed. Factors affecting Tc Surface roughness Channel shape and flow patterns (length of most distance point) Slope Urbanization generally increases the runoff velocities and therefore decreases the time of concentration Runoff Coefficient, C Time of Concentration Example Drainage area = 8 acres: 2 acres; C=0.35 (residential suburban) 6 acres; C=0.2 (undeveloped-unimproved) Time of Concentration 1. Estimate time of concentration Overland (sheet) flow +Shallow concentrated flow + Open channel flow T c T o T ch T P T c T o T ch T p = Time of concentration = Overland flow time = Flow time in kerb and channel = Pipe flow time 10

11 Time of Concentration (t c ) Time of Concentration (t c ) Depends on: Size and shape of drainage area Type of surface Slope of drainage area Rainfall intensity Whether flow is entirely overland or whether some is channelized Assumptions The rainfall intensity is assumed to be uniform over a time duration equal to or greater than the time of concentration, T c. A minimum time of concentration of 10 minutes is used in urban situations irrespective of how small the calculated value is. Time of Concentration, tc Time of Concentration (t c ) The time for the runoff to become established and flow from the most remote part of the drainage area to drainage outlet. Depends on: Size and shape of drainage area (Length) Type of surface Slope of drainage area Rainfall intensity Whether flow is entirely overland or whether some is channelized 11

12 Time of Concentration (Time Of Concentration For Areas With Sheet Flow) Example Drainage from the land is shown in figure as below and peak flow is needed for 10 year design storm using the Rational method. Take time of concentration is 10 minutes. Time of Travel Over Surface (Minutes) Length of overland Flow (m) A = 5000 m 2 C = 0.95 A = 1200 m 2 C = 0.85 A = 4200 m 2 C = 0.2 A = 600 m 2 C = 0.75 Area Example Area of watershed (flow surface) Defined by topography Use Arcview contours in lab Area of 70m 2 of Asphalt concrete surface produce storm water for a kerb inlet which is located on road edge. Determine the peak run-off at inlet assuming time of concentration is 10 minutes. 12

13 Flow in Rectangular Drains Uniform Flow in Open Channels The water collected through inlets and overland flow is conveyed to the drain, then to the culver, bridge and/or bare land according to the site conditions. Usually rectangular drains are used because, it is easy to design, construct and maintain relative to the other types. Water depth, flow area, discharge and velocity distribution at all sections throughout the entire channel reach remains unchanged. The energy grade line, water surface line, and the channel bottom lines are all parallel to each other No acceleration (or deceleration) Design of Rectangular Drains Flow in Rectangular Drains Design is usually base on an assumption of uniform flow because the error involved is relatively slight in most cases. Basically, the design of a highway drainage channel is done in two parts. selection of a channel section (given discharge on the available slope. determination of the protection required (if any) to prevent erosion of the drainage channel. Manning s formula is used to calculate the velocity at the design discharge and is compared with the permissible minimum and maximum velocities for a given type of channel. Capacity of rectangular drain can be calculated from the Manning s formula and continuity equation. Manning s Formula R S V n A* R S Q n 1 2 Continuity Equation Q = AV 13

14 Manning s Equation Example Q - flow rate (m 3 /s) n - Manning s coefficient (dimensionless) A Flow area (m 2 ) R is hydraulic radius (m) R = Wetted area / wetted perimeter S is slope (decimal format) Find the velocity of a rectangular channel 2m wide having 5% grade, flowing 0.75m deep. The Channel has a stone and weed bank (n=.035). Then find the flow Design of Rectangular Drains Example-Find time Design Criteria for the design of rectangular channels. 10 years storm recurrence interval is selected. Minimum possible velocity is taken as 0.70 m/s to prevent siltation. Maximum possible velocity is taken as 6.0 m/s to prevent erosion or scouring. If velocity = 3.6 m/s and length of channel is 500m then time traveled in channel =l/v =500/3.6 =138.9 s or 2.31 minutes. 14

15 Flow in Highway Gutter Example The drainage system at urban area is designed in such a way, that the run-off over the carriageway and foot walk flowed to the gutter and then through the kerb inlets to the drain while overland flow entered directly to drain. Grade 0.39% of Asphalt concrete road section has gutter flow of 0.003m 3 /s. Let Manning coeificient for bituminous surface is The gutter was formed by the surface of the carriageway and the kerb face. Flow in Triangular Gutter Flow in Highway Gutter Developing Equation for Gutter flow Manning s Formula R S V n 2 Continuity Equation Q = AV Q = (0.315 /n) * y 8/3 * z * S ½ 15

The Islamic University of Gaza- Civil Engineering Department Sanitary Engineering- ECIV 4325 L5. Storm water Management

The Islamic University of Gaza- Civil Engineering Department Sanitary Engineering- ECIV 4325 L5. Storm water Management The Islamic University of Gaza- Civil Engineering Department Sanitary Engineering- ECIV 4325 L5. Storm water Management Husam Al-Najar Storm water management : Collection System Design principles The Objectives

More information

Municipal Stormwater Ordinances Summary Table

Municipal Stormwater Ordinances Summary Table APPENDIX F Municipal Ordinances Summary Table Municipality Abington Bryn Athyn Borough Hatboro Borough Ordinance, SALDO Runoff equals pre post Erosion Sediment Control Water Quality Requirements Any which

More information

Overview of NRCS (SCS) TR-20 By Dr. R.M. Ragan

Overview of NRCS (SCS) TR-20 By Dr. R.M. Ragan Overview of NRCS (SCS) TR-20 By Dr. R.M. Ragan TR-20 is a computer program for the simulation of runoff occurring from a single storm event. The program develops flood hydrographs from runoff and routes

More information

Quantity of sewage. Dry weather flow: Domestic and industrial wastewater (Base flow) including inflow, infiltration and exfiltration

Quantity of sewage. Dry weather flow: Domestic and industrial wastewater (Base flow) including inflow, infiltration and exfiltration Quantity of sewage Quantity of sewage depends on Dry weather flow and storm water Dry weather flow: Domestic and industrial wastewater (Base flow) including inflow, infiltration and exfiltration Infiltration

More information

Learning objectives. Upon successful completion of this lecture, the participants will be able to:

Learning objectives. Upon successful completion of this lecture, the participants will be able to: Solomon Seyoum Learning objectives Upon successful completion of this lecture, the participants will be able to: Describe and perform the required step for designing sewer system networks Outline Design

More information

10.0 Storm Sewer Systems

10.0 Storm Sewer Systems October 2003 Chapter 10.0, Storm Sewer Systems Page 1 10.0 Storm Sewer Systems 10.1 Introduction A storm sewer system consists of a system of inlets, pipes, manholes, junctions, cleanouts, outlets, and

More information

APPENDIX C INLETS. The application and types of storm drainage inlets are presented in detail in this Appendix.

APPENDIX C INLETS. The application and types of storm drainage inlets are presented in detail in this Appendix. Storm Drainage 13-C-1 APPENDIX C INLETS 1.0 Introduction The application and types of storm drainage inlets are presented in detail in this Appendix. 2.0 Inlet Locations Inlets are required at locations

More information

Stormwater Local Design Manual For Houston County, Georgia

Stormwater Local Design Manual For Houston County, Georgia Stormwater Local Design Manual For Houston County, Georgia Adopted November 15, 2005 TABLE OF CONTENTS 1. FORWARD... 1 2. GENERAL LEVEL OF SERVICE STANDARDS... 2 2.1. DETENTION REQUIREMENTS... 2 2.1.1.

More information

MODEL Stormwater Local Design Manual. City of Centerville

MODEL Stormwater Local Design Manual. City of Centerville MODEL Stormwater Local Design Manual City of Centerville Adopted December 6, 2005 TABLE OF CONTENTS 1. FORWARD... 1 2. GENERAL LEVEL OF SERVICE STANDARDS... 1 2.1. DETENTION REQUIREMENTS... 1 2.1.1. Discharge

More information

TECHNICAL BULLETIN. Synthetic Turf Athletic Field Drainage Design Assistance

TECHNICAL BULLETIN. Synthetic Turf Athletic Field Drainage Design Assistance TECHNICAL BULLETIN Synthetic Turf Athletic Field Drainage Design Assistance The SportsEdge HQ geocomposite strip drain products are engineered specifically for use in synthetic turf athletic field base

More information

iswm TM Technical Manual Hydrology:

iswm TM Technical Manual Hydrology: : 1.0 2.0 Downstream Assessment 3.0 Streambank Protection 4.0 Water Balance 5.0 Rainfall Tables 6.0 Hydrologic Soils Data Table of Contents 1.0... HO-1 1.1 Estimating Runoff... HO-1 1.1.1 Introduction

More information

Drainage of Highway Pavements

Drainage of Highway Pavements PDHonline Course C343 (8 PDH) Drainage of Highway Pavements Instructor: Vincent D. Reynolds, MBA, PE 2012 PDH Online PDH Center 5272 Meadow Estates Drive Fairfax, VA 22030-6658 Phone & Fax: 703-988-0088

More information

SECTION STORM DRAINAGE DESIGN, GRADING, AND WATER QUALITY TECHNICAL CRITERIA TABLE OF CONTENTS PAGE 402 STORM DRAINAGE DESIGN CRITERIA 400-1

SECTION STORM DRAINAGE DESIGN, GRADING, AND WATER QUALITY TECHNICAL CRITERIA TABLE OF CONTENTS PAGE 402 STORM DRAINAGE DESIGN CRITERIA 400-1 CITY OF THORNTON Standards and Specifications Revised: October 2012 SECTION 400 - STORM DRAINAGE DESIGN, GRADING, AND WATER QUALITY TECHNICAL CRITERIA TABLE OF CONTENTS PAGE 401 GENERAL PROVISIONS 400-1

More information

Chapter 6. Hydrology. 6.0 Introduction. 6.1 Design Rainfall

Chapter 6. Hydrology. 6.0 Introduction. 6.1 Design Rainfall 6.0 Introduction This chapter summarizes methodology for determining rainfall and runoff information for the design of stormwater management facilities in the City. The methodology is based on the procedures

More information

APPENDIX G HYDRAULIC GRADE LINE

APPENDIX G HYDRAULIC GRADE LINE Storm Drainage 13-G-1 APPENDIX G HYDRAULIC GRADE LINE 1.0 Introduction The hydraulic grade line is used to aid the designer in determining the acceptability of a proposed or evaluation of an existing storm

More information

Standards for Soil Erosion and Sediment Control in New Jersey May 2012 STANDARD FOR SLOPE PROTECTION STRUCTURES. Definition

Standards for Soil Erosion and Sediment Control in New Jersey May 2012 STANDARD FOR SLOPE PROTECTION STRUCTURES. Definition STANDARD FOR SLOPE PROTECTION STRUCTURES Definition Structures to safely conduct surface runoff from the top of a slope to the bottom of the slope. Purpose The purpose of this practice is to convey storm

More information

6.0 Runoff. 6.1 Introduction. 6.2 Flood Control Design Runoff

6.0 Runoff. 6.1 Introduction. 6.2 Flood Control Design Runoff October 2003, Revised February 2005 Chapter 6.0, Runoff Page 1 6.1 Introduction 6.0 Runoff The timing, peak rates of discharge, and volume of stormwater runoff are the primary considerations in the design

More information

CHAPTER 3 STORMWATER HYDROLOGY. Table of Contents SECTION 3.1 METHODS FOR ESTIMATING STORMWATER RUNOFF

CHAPTER 3 STORMWATER HYDROLOGY. Table of Contents SECTION 3.1 METHODS FOR ESTIMATING STORMWATER RUNOFF CHAPTER 3 STORMWATER HYDROLOGY Table of Contents SECTION 3.1 METHODS FOR ESTIMATING STORMWATER RUNOFF 3.1.1 Introduction to Hydrologic Methods...3.1-1 3.1.2 Symbols and Definitions...3.1-3 3.1.3 Rainfall

More information

MICHIGAN DESIGN MANUAL ROAD DESIGN CHAPTER 4 INDEX DRAINAGE

MICHIGAN DESIGN MANUAL ROAD DESIGN CHAPTER 4 INDEX DRAINAGE CHAPTER 4 INDEX DRAINAGE Supplement to Chapter 4 4.01 GENERAL INFORMATION 4.01.01 References 4.01.03 General Procedures 4.02 STORM SEWER DESIGN 4.02.15 Sewer Bulkheads 4.02.18 Storm Sewers Under Structures

More information

CHAPTER 12 BRIDGE DECK DRAINAGE SYSTEMS

CHAPTER 12 BRIDGE DECK DRAINAGE SYSTEMS OFFICE OF STRUCTURES MANUAL FOR HYDROLOGIC AND HYDRAULIC DESIGN CHAPTER 12 BRIDGE DECK DRAINAGE SYSTEMS APRIL 2011 APRIL 2011 Page 1 Chapter Table of Contents 12.1 Policy... 12-3 12.1.1 Table 1... 12-3

More information

Table of Contents. Overview... 1

Table of Contents. Overview... 1 Chapter 3 Chapter 3 Table of Contents Overview... 1 Rainfall... 2 3-2-1 Rainfall Depths and Intensities... 2 3-2-2 Design Storm Distribution for Colorado Urban Hydrograph Procedure (CUHP)... 5 3-2-3 Temporal

More information

DRAINAGE DESIGN AND RUTTING PERFORMANACE GUIDELINES FOR PERMEABLE PAVEMENT

DRAINAGE DESIGN AND RUTTING PERFORMANACE GUIDELINES FOR PERMEABLE PAVEMENT DRAINAGE DESIGN AND RUTTING PERFORMANACE GUIDELINES FOR PERMEABLE PAVEMENT by Su Ling Cao Daryl Poduska Graduate Assistants Dan G. Zollinger Associate Professor Sponsored by The Uni-Group U.S.A. The Department

More information

Section 600 Runoff Table of Contents

Section 600 Runoff Table of Contents Section 600 Runoff Table of Contents 601 INTRODUCTION...600-1 602 RATIONAL METHOD...600-1 602.1 Rational Method Formula...600-2 602.2 Time of Concentration...600-2 602.3 Intensity...600-4 602.4 Runoff

More information

Hydrology and Water Management. Dr. Mujahid Khan, UET Peshawar

Hydrology and Water Management. Dr. Mujahid Khan, UET Peshawar Hydrology and Water Management Dr. Mujahid Khan, UET Peshawar Course Outline Hydrologic Cycle and its Processes Water Balance Approach Estimation and Analysis of Precipitation Data Infiltration and Runoff

More information

Module 7: Hydraulic Design of Sewers and Storm Water Drains. Lecture 7: Hydraulic Design of Sewers and Storm Water Drains

Module 7: Hydraulic Design of Sewers and Storm Water Drains. Lecture 7: Hydraulic Design of Sewers and Storm Water Drains Module 7: Hydraulic Design of Sewers and Storm Water Drains Lecture 7: Hydraulic Design of Sewers and Storm Water Drains 7.0 HYDRAULIC DESIGN OF SEWERS AND STORM WATER DRAINS 7.1 General Consideration

More information

BIG O HDPE TUBING HDPE CORRUGATED TUBING FOR AGRICULTURAL, RESIDENTIAL AND HIGHWAY DRAINAGE INCREASE CROP YIELDS LOWER PRODUCTION COSTS

BIG O HDPE TUBING HDPE CORRUGATED TUBING FOR AGRICULTURAL, RESIDENTIAL AND HIGHWAY DRAINAGE INCREASE CROP YIELDS LOWER PRODUCTION COSTS DRAINAGE SOLUTIONS SINCE 1908 BIG O HDPE TUBING HDPE CORRUGATED TUBING FOR AGRICULTURAL, RESIDENTIAL AND HIGHWAY DRAINAGE INCREASE CROP YIELDS LOWER PRODUCTION COSTS PROTECT FOUNDATIONS IMPROVE HIGHWAY

More information

STORM WATER MANAGEMENT REPORT

STORM WATER MANAGEMENT REPORT Silvercreek Junction STORM WATER MANAGEMENT REPORT Howitt Creek at the Silvercreek Parkway Site Guelph, Ontario August, 2008 TSH File 22304A-04 August 19, 2008 STORMWATER MANAGEMENT REPORT Howitt Creek

More information

TEMPORARY SEDIMENT TRAP CODE

TEMPORARY SEDIMENT TRAP CODE ILLINOIS URBAN MANUAL PRACTICE STANDARD TEMPORARY SEDIMENT TRAP CODE 960 Source: DEFINITION A small temporary stormwater storage structure designed to trap sediment. PURPOSE The purpose of this practice

More information

DIVISION 5 STORM DRAINAGE CRITERIA

DIVISION 5 STORM DRAINAGE CRITERIA DIVISION 5 STORM DRAINAGE CRITERIA Section 5.01 GENERAL The following storm drainage design criteria shall apply to all storm drainage designs in the City. Additional design criteria are specified in the

More information

Standards for Soil Erosion and Sediment Control in New Jersey May 2012 STANDARD FOR GRASSED WATERWAYS. Definition. Purpose

Standards for Soil Erosion and Sediment Control in New Jersey May 2012 STANDARD FOR GRASSED WATERWAYS. Definition. Purpose STANDARD FOR GRASSED WATERWAYS Definition A natural or constructed watercourse shaped or graded in earth materials and stabilized with suitable vegetation for the safe conveyance of runoff water. Purpose

More information

Highway Engineering. 3 _ 2/2 Lecture/Laboratory Hours

Highway Engineering. 3 _ 2/2 Lecture/Laboratory Hours COURSE OUTLINE CIV216 Course Number Highway Engineering Course Title 3 _ 2/2 Credits Lecture/Laboratory Hours COURSE DESCRIPTION Explores the planning, design, construction, and characteristics of highways

More information

Design of Sewerage System for Jaffarpur area in Southwest New Delhi

Design of Sewerage System for Jaffarpur area in Southwest New Delhi International Journal of Civil Engineering Research. ISSN 2278-3652 Volume 5, Number 1 (2014), pp. 29-34 Research India Publications http://www.ripublication.com/ijcer.htm Design of Sewerage System for

More information

Project Drainage Report

Project Drainage Report Design Manual Chapter 2 - Stormwater 2A - General Information 2A-4 Project Drainage Report A. Purpose The purpose of the project drainage report is to identify and propose specific solutions to stormwater

More information

1. Stream Network. The most common approach to quantitatively describing stream networks was postulated by Strahler (1952).

1. Stream Network. The most common approach to quantitatively describing stream networks was postulated by Strahler (1952). 1. Stream Network The most common approach to quantitatively describing stream networks was postulated by Strahler (1952). First Order Streams streams with no tributaries. Second Order Streams begin at

More information

1000 HYDRAULICS CHAPTER

1000 HYDRAULICS CHAPTER MoT Section 1000 TAC Section Not Applicable 1000 HYDRAULICS CHAPTER 1010 General Design Guidelines... 1010-1 1010.01 General... 1010-1 1010.02 Design Guidelines... 1010-1 1010.03 Requirements for Drainage

More information

Chapter 7. Street Drainage. 7.0 Introduction. 7.1 Function of Streets in the Drainage System. 7.2 Street Classification

Chapter 7. Street Drainage. 7.0 Introduction. 7.1 Function of Streets in the Drainage System. 7.2 Street Classification 7. Introduction This chapter summarizes methods to evaluate runoff conveyance in various street cross sections and curb types in the Town of Castle Rock and identifies acceptable upper limits of street

More information

CACHE VALLEY STORM WATER DESIGN STANDARDS. As Amended by Logan City November 2010

CACHE VALLEY STORM WATER DESIGN STANDARDS. As Amended by Logan City November 2010 CACHE VALLEY STORM WATER DESIGN STANDARDS As Amended by Logan City November 2010 Updated November 2010 Table of Contents A. Definitions... 3 B. Design Requirements... 5 1. Storm Event... 5 2. Allowable

More information

4701 Piccadilly Place South - Creek Realignment Hydrology and Hydraulic Design 2016 Update for Revision 2 Drawing

4701 Piccadilly Place South - Creek Realignment Hydrology and Hydraulic Design 2016 Update for Revision 2 Drawing 30 Gostick Place North Vancouver, BC V7M 3G3 604.980.6011 www.nhcweb.com NHC Ref. No. 30000457 2016 September 16 Dr. Sukhi Muker 1785 Bellevue Avenue West Vancouver, BC V7V 1A8 Via email: sukhi@drsukhi.com

More information

Chapter 9 - Storm Drains

Chapter 9 - Storm Drains Chapter 9 - Storm Drains TABLE OF CONTENTS CHAPTER 9 - STORM DRAINS... 9-1 9.1 Introduction... 9-1 9.1.1 Objective 9-1 9.2 Design Policy... 9-2 9.2.1 Definition 9-2 9.2.2 General Policies... 9-2 9.3 Design

More information

CITY OF TROY DESIGN STANDARDS AND CONSTRUCTION SPECIFICATIONS

CITY OF TROY DESIGN STANDARDS AND CONSTRUCTION SPECIFICATIONS CITY OF TROY DESIGN STANDARDS AND CONSTRUCTION SPECIFICATIONS PREPARED BY: F-7587 JANUARY 2010 TABLE OF CONTENTS SECTION 1 SECTION 2 SECTION 3 SECTION 4 SECTION 5 SECTION 6 APPENDIX ROADWAY DESIGN DRAINAGE

More information

City of Saint John. Storm Drainage Design Criteria Manual

City of Saint John. Storm Drainage Design Criteria Manual Storm Drainage Design Criteria Manual March 7, 2016 LIST OF 2016 REVISIONS PAGES SECTION TITLE iii, iv, v, vi All Table of Contents 31-35 3 SUBMISSION REQUIREMENTS March 7, 2016 Page i DISCLAIMER The material

More information

NEW CASTLE CONSERVATION DISTRICT. through. (Name of Municipality) PLAN REVIEW APPLICATION DRAINAGE, STORMWATER MANAGEMENT, EROSION & SEDIMENT CONTROL

NEW CASTLE CONSERVATION DISTRICT. through. (Name of Municipality) PLAN REVIEW APPLICATION DRAINAGE, STORMWATER MANAGEMENT, EROSION & SEDIMENT CONTROL NEW CASTLE CONSERVATION DISTRICT through (Name of Municipality) PLAN REVIEW APPLICATION DRAINAGE, STORMWATER MANAGEMENT, EROSION & SEDIMENT CONTROL Office use only: Received by Municipality: Received by

More information

CAPRICORN MUNICIPAL DEVELOPMENT GUIDELINES STORMWATER DRAINAGE DESIGN

CAPRICORN MUNICIPAL DEVELOPMENT GUIDELINES STORMWATER DRAINAGE DESIGN CAPRICORN MUNICIPAL DEVELOPMENT GUIDELINES STORMWATER DRAINAGE DESIGN D5 DESIGN GUIDELINES CAPRICORN MUNICIPAL DEVELOPMENT GUIDELINES D5 ISSUE: NO:4 Jan 2017 TABLE OF CONTENTS CLAUSE CONTENTS PAGE GENERAL...4

More information

Effect of the Underlying Groundwater System on the Rate of Infiltration of Stormwater Infiltration Structures.

Effect of the Underlying Groundwater System on the Rate of Infiltration of Stormwater Infiltration Structures. Effect of the Underlying Groundwater System on the Rate of Infiltration of Stormwater Infiltration Structures. Presented at: Storm Water Infiltration & Groundwater Recharge A Conference on Reducing Runoff

More information

Storm Drain Inlet Protection

Storm Drain Inlet Protection Categories EC Erosion Control SE Sediment Control TC Tracking Control WE Wind Erosion Control Non-Stormwater NS Management Control Waste Management and WM Materials Pollution Control Legend: Primary Category

More information

City of Redwood City Stormwater Pollution Prevention Program. Drainage Guidelines for Residential Development

City of Redwood City Stormwater Pollution Prevention Program. Drainage Guidelines for Residential Development City of Redwood City Stormwater Pollution Prevention Program Drainage Guidelines for Residential Development General Requirements A. Plot & Finished Grading Plan must be submitted with Building Permit

More information

Article 20: Erosion Control and Stormwater Management

Article 20: Erosion Control and Stormwater Management Article 20: Erosion Control and Stormwater Management Section 360: Purpose, Scope of Authority, Performance Guarantee and Approvals A. Purpose. The purpose of this document is to set forth minimum requirements

More information

FLAGSTAFF FAMILY FOOD BANK FLOOD REMEDIATION PROJECT

FLAGSTAFF FAMILY FOOD BANK FLOOD REMEDIATION PROJECT FLAGSTAFF FAMILY FOOD BANK FLOOD REMEDIATION PROJECT Final Design Report 5/12/2016 Erik Henricksen, Elena Smith, Garrett Ribas, Meshal Alotaibi Table of Contents Acknowledgments... 3 1.0 Project Description...

More information

E. STORMWATER MANAGEMENT

E. STORMWATER MANAGEMENT E. STORMWATER MANAGEMENT 1. Existing Conditions The Project Site is located within the Lower Hudson Watershed. According to the New York State Department of Environmental Conservation (NYSDEC), Lower Hudson

More information

Understanding Stormwater Pollution Prevention Plans (SWPPPs) (SWPPPS)

Understanding Stormwater Pollution Prevention Plans (SWPPPs) (SWPPPS) Understanding Stormwater Pollution Prevention Plans (SWPPPs) (SWPPPS) Definitions SWPPP: Storm Water Pollution Prevention Plan BMP: Best Management Practice(s) to control pollution IDNR: Iowa Department

More information

Lift irrigation Using man or Animal power Using Mechanical or Electrical Power Flow irrigation a)inundation Irrigation b) Perennial Irrigation Direct

Lift irrigation Using man or Animal power Using Mechanical or Electrical Power Flow irrigation a)inundation Irrigation b) Perennial Irrigation Direct Lift irrigation Using man or Animal power Using Mechanical or Electrical Power Flow irrigation a)inundation Irrigation b) Perennial Irrigation Direct irrigation Storage irrigation a)flow irrigation system:

More information

At least 2 feet above the seasonal high water table Overflow path or structure provided

At least 2 feet above the seasonal high water table Overflow path or structure provided General Conditions Map of proposed subwatershed to each subbasin, including total area and CN Design Flow or Design Volume to each STF, as appropriate Operation and Maintenance instructions for each STF

More information

SECTION 3 DRAINAGE. 3-1 General. 3-2 Drainage Ordinances and Legal Requirements

SECTION 3 DRAINAGE. 3-1 General. 3-2 Drainage Ordinances and Legal Requirements SECTION 3 DRAINAGE 3-1 General All Drainage plans for proposed development shall be prepared by a Professional Engineer registered in Virginia, except as noted below. Further, their seal and signature

More information

Outlet Flow Velocity in Circular Culvert

Outlet Flow Velocity in Circular Culvert Archives of Hydro-Engineering and Environmental Mechanics Vol. 61 (2014), No. 3 4, pp. 193 203 DOI: 10.1515/heem-2015-0013 IBW PAN, ISSN 1231 3726 Outlet Flow Velocity in Circular Culvert Wojciech Szpakowski

More information

PART 1 GENERAL REQUIREMENTS

PART 1 GENERAL REQUIREMENTS PART 1 GENERAL REQUIREMENTS Contract Closeout Plan 110 Arrow diagram for project close-out...3 Erosion Control 121 Straw bale barrier... 5 122 Silt fence... 7 123 Diversion dike... 9 124 Inlet protection...

More information

CITY OF DICKINSON DRAINAGE CRITERIA MANUAL. (Adopted August 23, 2011)

CITY OF DICKINSON DRAINAGE CRITERIA MANUAL. (Adopted August 23, 2011) CITY OF DICKINSON DRAINAGE CRITERIA MANUAL () I. INTRODUCTION Purpose This DRAINAGE CRITERIA MANUAL (the Manual ) provides design guidance for use by developers and engineers in preparation of drainage

More information

Erosion & Sedimentation Control Policy

Erosion & Sedimentation Control Policy Issue Date 10/22/2010 Page 1 of 8 Erosion & Sedimentation Control Policy Introduction: Soil erosion is the removal of soil by water, wind, ice or gravity and sediment deposition occurs when the rate of

More information

Index. Page numbers followed by f indicate figures.

Index. Page numbers followed by f indicate figures. Index Aerodynamic method, 103, 110 111 Algae, 131, 173, 175 Alternate depth, 88 Alternating block method, 132, 140 141 Attenuation, 106, 107f, 118, 120 Page numbers followed by f indicate figures. Baseflow

More information

STORMWATER RUN-ON AND RUN-OFF CONTROL PLAN ENTERGY ARKANSAS, INC. INDEPENDENCE PLANT CLASS 3N CCR LANDFILL

STORMWATER RUN-ON AND RUN-OFF CONTROL PLAN ENTERGY ARKANSAS, INC. INDEPENDENCE PLANT CLASS 3N CCR LANDFILL STORMWATER RUN-ON AND RUN-OFF CONTROL PLAN ENTERGY ARKANSAS, INC. INDEPENDENCE PLANT CLASS 3N CCR LANDFILL PERMIT NO. 0200-S3N-R2 AFIN: 32-00042 OCTOBER 12, 2016 STORMWATER RUN-ON AND RUN-OFF CONTROL PLAN

More information

LAWRENCE, KANSAS STORMWATER MANAGEMENT CRITERIA

LAWRENCE, KANSAS STORMWATER MANAGEMENT CRITERIA LAWRENCE, KANSAS STORMWATER MANAGEMENT CRITERIA FEBRUARY 1996 CITY OF LAWRENCE, KANSAS STORMWATER MANAGEMENT CRITERIA TABLE OF CONTENTS Pg 1.0 GENERAL 1.1 Introduction... 1 1.2 Applicability... 1 1.3 General

More information

Streamlines V2, n2 (May 1997) A Newsletter for North Carolina Water Supply Watershed Administrators

Streamlines V2, n2 (May 1997) A Newsletter for North Carolina Water Supply Watershed Administrators Page 1 of 5 STREAMLINES A Newsletter for North Carolina Water Supply Watershed Administrators Volume 2, Number 2 May 1997 Non-Point Source (NPS) Pollution This issue of Streamlines provides basic information

More information

CLARK COUNTY REGIONAL FLOOD CONTROL DISTRICT HYDROLOGIC CRITERIA AND DRAINAGE DESIGN MANUAL

CLARK COUNTY REGIONAL FLOOD CONTROL DISTRICT HYDROLOGIC CRITERIA AND DRAINAGE DESIGN MANUAL CLARK COUNTY REGIONAL FLOOD CONTROL DISTRICT HYDROLOGIC CRITERIA AND DRAINAGE DESIGN MANUAL SECTION 600 STORM RUNOFF TABLE OF CONTENTS 601 INTRODUCTION 603 601.1 - Basin Characteristics 603 602 TIME OF

More information

DESIGN OF SEWER SYSTEMS

DESIGN OF SEWER SYSTEMS Wastewater Engineering (MSc program) DESIGN OF SEWER SYSTEMS Prepared by Dr.Khaled Zaher Assistant Professor, Public Works Engineering Department, Faculty of Engineering, Cairo University 1. Sewer Materials

More information

APPENDIX A: STORMWATER HYDROLOGY

APPENDIX A: STORMWATER HYDROLOGY APPENDIX A: STORMWATER HYDROLOGY In low impact development (LID), the objective of stormwater control measures (SCMs) is to mimic or replicate the hydrologic function of a natural system. This approach

More information

Contact the Jurisdictional Engineer for materials allowed by each jurisdiction.

Contact the Jurisdictional Engineer for materials allowed by each jurisdiction. Design Manual Chapter 3 - Sanitary Sewers 3C - Facility Design 3C-1 Facility Design A. Capacity of Pipe Pipe sizes 15 inches and smaller should carry the peak flow at a depth of no more than 0.67 of the

More information

City of Oakland. Public Works Agency Standards STORM DRAINAGE DESIGN GUIDELINES. Engineering Design & ROW Management Division

City of Oakland. Public Works Agency Standards STORM DRAINAGE DESIGN GUIDELINES. Engineering Design & ROW Management Division City of Oakland PUBLIC WORKS AGENCY 250 FRANK H. OGAWA PLAZA 4 TH FLOOR OAKLAND, CALIFORNIA 94612 (510) 238-3437 FAX (510) 238-7227 TTD (510) 238-3254 Public Works Agency Standards STORM DRAINAGE DESIGN

More information

Sag Pipe (depressed sewers, or Inverted siphons) Dr. Sataa A. Al-Bayati(10-11)

Sag Pipe (depressed sewers, or Inverted siphons) Dr. Sataa A. Al-Bayati(10-11) بسم هللا الرحمن الرحيم Sag Pipe (depressed sewers, or Inverted siphons) Dr. Sataa A. Al-Bayati(10-11) A sewer that drops below the hydraulic gradient to pass under an obstruction, such as a railroad cut,

More information

Standards for Soil Erosion and Sediment Control in New Jersey May 2012 STANDARD FOR RIPRAP. Conditions Where Practice Applies

Standards for Soil Erosion and Sediment Control in New Jersey May 2012 STANDARD FOR RIPRAP. Conditions Where Practice Applies STANDARD FOR RIPRAP Definition A layer of loose rock, aggregate, bagged concrete, gabions, or concrete revetment blocks placed over an erodible soil surface. Purpose The purpose of riprap is to protect

More information

Culvert Sizing procedures for the 100-Year Peak Flow

Culvert Sizing procedures for the 100-Year Peak Flow CULVERT SIZING PROCEDURES FOR THE 100-YEAR PEAK FLOW 343 APPENDIX A: Culvert Sizing procedures for the 100-Year Peak Flow A. INTRODUCTION Several methods have been developed for estimating the peak flood

More information

CITY OF ASTORIA PUBLIC WORKS ENGINEERING DIVISION ENGINEERING DESIGN STANDARDS FOR IN-FILL DEVELOPMENT

CITY OF ASTORIA PUBLIC WORKS ENGINEERING DIVISION ENGINEERING DESIGN STANDARDS FOR IN-FILL DEVELOPMENT CITY OF ASTORIA PUBLIC WORKS ENGINEERING DIVISION ENGINEERING DESIGN STANDARDS FOR IN-FILL DEVELOPMENT Adopted by City Council: May 21, 2007 X:\General Eng\DESIGN STANDARDS\Engineering Design Standards

More information

Water supply components

Water supply components Water supply components Water sources structures (Dams, wells, reservoirs) Surface water Groundewater Pipelines from source Water treatment plant components Pumping stations Storage (elevated tanks) Distribution

More information

Storm Sewer Design. Bob Pitt University of Alabama and Shirley Clark Penn State Harrisburg

Storm Sewer Design. Bob Pitt University of Alabama and Shirley Clark Penn State Harrisburg Storm Sewer Design Bob Pitt University of Alabama and Shirley Clark Penn State Harrisburg Major floods are dramatic and water flow routes must be recognized when minor drainage systems fail. These types

More information

Methods of Streamflow Analysis

Methods of Streamflow Analysis 4 Methods of Streamflow Analysis CHAPTER 4 Streamflow Measurements Danielle M. Andrews Department of Crop and Soil Sciences, The Pennsylvania State University I. INTRODUCTION Perennial carries water all

More information

THE RATIONAL METHOD FREQUENTLY USED, OFTEN MISUSED

THE RATIONAL METHOD FREQUENTLY USED, OFTEN MISUSED THE RATIONAL METHOD FREQUENTLY USED, OFTEN MISUSED Mark Pennington, Engineer, Pattle Delamore Partners Ltd, Tauranga ABSTRACT The Rational Method has been in use in some form or another at least since

More information

Software Applications for Runoff Hydrological Assessment

Software Applications for Runoff Hydrological Assessment Bulletin UASVM Horticulture, 67(2)/2010 Print ISSN 1843-5254; Electronic ISSN 1843-5394 Software Applications for Runoff Hydrological Assessment Severin CAZANESCU 1), Sorin CIMPEANU 1), Oana GUI 2), Dana

More information

The Effect of Surface Texture on Evaporation, Infiltration and Storage Properties of Paved Surfaces

The Effect of Surface Texture on Evaporation, Infiltration and Storage Properties of Paved Surfaces The Effect of Surface Texture on Evaporation, Infiltration and Storage Properties of Paved Surfaces M. Mansell* and F. Rollet School of Engineering and Science, University of the West of Scotland, Paisley

More information

Chapter 6 Hydrology TABLE OF CONTENTS CHAPTER 6 - HYDROLOGY

Chapter 6 Hydrology TABLE OF CONTENTS CHAPTER 6 - HYDROLOGY Chapter 6 Hydrology TABLE OF CONTENTS CHAPTER 6 - HYDROLOGY... 6-1 6.1 Introduction... 6-1 6.1.1 Objective... 6-1 6.1.2 Definition... 6-1 6.1.3 Factors Affecting Floods... 6-1 6.1.4 Sources of Information...

More information

NORFOLK SOUTHERN CORPORATION UNDERPASS GRADE SEPARATION DESIGN CRITERIA

NORFOLK SOUTHERN CORPORATION UNDERPASS GRADE SEPARATION DESIGN CRITERIA NORFOLK SOUTHERN CORPORATION UNDERPASS GRADE SEPARATION DESIGN CRITERIA PURPOSE AND SCOPE These criteria modify and supplement the applicable sections of the AREMA Manual of Recommended Practice in connection

More information

Hydraulic Design of Highway Culverts HDS 5 September 1985

Hydraulic Design of Highway Culverts HDS 5 September 1985 Hydraulic Design of Highway Culverts HDS 5 September 1985 Welcome to HDS 5 - Hydraulic Design of Highway Culverts Table of Contents Preface Tech Doc U.S. - SI Conversions DISCLAIMER: During the editing

More information

Ohio Department of Transportation Division of Production Management Office of Geotechnical Engineering. Geotechnical Bulletin

Ohio Department of Transportation Division of Production Management Office of Geotechnical Engineering. Geotechnical Bulletin Ohio Department of Transportation Division of Production Management Office of Geotechnical Engineering Geotechnical Bulletin GB 2 SPECIAL BENCHING AND SIDEHILL EMBANKMENT FILLS Geotechnical Bulletin GB2

More information

Plan Name Plan No. Submitting Firm Contact Engineer. Review Date ESI Team ENGINEERS AND SURVEYORS INSTITUTE PEER REVIEW CHECKLIST CITY OF ALEXANDRIA

Plan Name Plan No. Submitting Firm Contact Engineer. Review Date ESI Team ENGINEERS AND SURVEYORS INSTITUTE PEER REVIEW CHECKLIST CITY OF ALEXANDRIA EROSION AND SEDIMENT CONTROL CHECKLIST (E&S) VIRGINIA EROSION AND SEDIMENT CONTROL HANDBOOK (1 of 2) Item # Description OK NO N/A 1 Limits of clearing and grading match on all appropriate sheets 2 Construction

More information

COON CREEK WATERSHED DISTRICT PERMIT REVIEW. Spring Lake Park Schools Westwood Middle School st Avenue NE, Spring Lake Park, MN 55432

COON CREEK WATERSHED DISTRICT PERMIT REVIEW. Spring Lake Park Schools Westwood Middle School st Avenue NE, Spring Lake Park, MN 55432 PAN 16-112, Westwood Middle School, Page 1 of 6 COON CREEK WATERSHED DISTRICT PERMIT REVIEW MEETING DATE: August 22, 2016 AGENDA NUMBER: 10 FILE NUMBER: 16-112 ITEM: Westwood Middle School RECOMMENDATION:

More information

2. Pavement Materials: Consist of flexible or rigid pavements, typically HMA or PCC, respectively, or a composite of the two.

2. Pavement Materials: Consist of flexible or rigid pavements, typically HMA or PCC, respectively, or a composite of the two. Design Manual Chapter 6 - Geotechnical 6C - Pavement Systems 6C-1 Pavement Systems A. General Information This section addresses the importance of pavement foundations and the potential for pavement problems

More information

Urban Drainage Introduction. A.Ramachandra Rao. C.B. Burke. T.T. Burke, Jr.

Urban Drainage Introduction. A.Ramachandra Rao. C.B. Burke. T.T. Burke, Jr. 32 Urban Drainage A.Ramachandra Rao Purdue University C.B. Burke Christopher B. Burke Engineering, Ltd. T.T. Burke, Jr. Christopher B. Burke Engineering, Ltd. 32.1 Introduction 32.2 The Rational Method

More information

StormwaterWise Landscapes: Pervious Surfaces Specifications

StormwaterWise Landscapes: Pervious Surfaces Specifications StormwaterWise Landscapes: Pervious Surfaces Specifications Purpose & Benefits Stormwater runoff reduction High pollutant removal Control localized drainage problems Attractive alternative for walkways

More information

Temporary Watercourse Crossing: Culverts

Temporary Watercourse Crossing: Culverts Temporary Watercourse Crossing: Culverts DRAINAGE CONTROL TECHNIQUE Low Gradient Velocity Control Short Term Steep Gradient Channel Lining Medium-Long Term Outlet Control Soil Treatment Permanent Symbol

More information

Initial Construction Costs For Various Pavement and Drainage Options

Initial Construction Costs For Various Pavement and Drainage Options Interpave Initial Construction Costs For Various Pavement and Drainage Options Final Prepared For Interpave Scott Wilson Ltd Interpave Pavement Design CONTENTS 1. Overview 2. Summary of Pavement Types

More information

STRUCTURAL AND HYDROLOGICAL DESIGN OF PERMEABLE PAVEMENTS

STRUCTURAL AND HYDROLOGICAL DESIGN OF PERMEABLE PAVEMENTS STRUCTURAL AND HYDROLOGICAL DESIGN OF PERMEABLE PAVEMENTS David K. Hein, P.Eng. Vice-President, Transportation dhein@ara.com D.J. Swan, P.Eng. and Lori Schaus, P.Eng. Senior Engineer and Project Engineer

More information

Economics of Controlled Drainage and Subirrigation Systems

Economics of Controlled Drainage and Subirrigation Systems Economics of Controlled Drainage and Subirrigation Systems Prepared by: Robert Evans, Extension Agricultural Engineering Specialist Wayne Skaggs and Ronald E. Sneed Professors of Biological and Agricultural

More information

URBAN FLOODING: HEC-HMS

URBAN FLOODING: HEC-HMS 1.0 Introduction URBAN FLOODING: HEC-HMS -Sunil Kumar, Director, NWA All major ancient civilisations were developed in the river valleys because river served as source of water, food, transportation and

More information

ROLES AND RESPONSIBILITIES Small Pond Approval. SWM MD-378 Pond Checklist Training 10/17/07. Exemptions EMBANKMENT HEIGHT. Height of Dam Weir Wall

ROLES AND RESPONSIBILITIES Small Pond Approval. SWM MD-378 Pond Checklist Training 10/17/07. Exemptions EMBANKMENT HEIGHT. Height of Dam Weir Wall SWM MD-378 Pond Checklist Training 10/17/07 Ken Wolfe Warren Johnson USDA, NRCS Frederick, Maryland ROLES AND RESPONSIBILITIES Small Pond Approval MDE, WMA, Dam Safety Division Authority (COMAR 26.17.04.03)

More information

2A Stormwater Regulations and Permitting A. Iowa Drainage Law and Resources 1 B. Regulated Activities 1

2A Stormwater Regulations and Permitting A. Iowa Drainage Law and Resources 1 B. Regulated Activities 1 Design Manual Chapter 2 - Stormwater Table of Contents TOC Table of Contents Chapter 2 - Stormwater 2A General Information 2A-1--------------------------------General Information A. Concept... 1 B. Informing

More information

Filter Tube Barriers (Instream)

Filter Tube Barriers (Instream) Filter Tube Barriers (Instream) INSTREAM PRACTICES Flow Control No Channel Flow Dry Channels Erosion Control Low Channel Flows Shallow Water Sediment Control High Channel Flows Deep Water Symbol Photo

More information

Constructed Wetland Channel T-9

Constructed Wetland Channel T-9 Description A constructed wetland channel is a conveyance BMP that is built, in part, to enhance stormwater quality. Constructed wetland channels use dense vegetation to slow down runoff and allow time

More information

124 MODERN SEWER DESIGN

124 MODERN SEWER DESIGN 14 MODERN SEWER DESIGN Fabricated fittings are hydraulically superior. 5. HYDRAULIC DESIGN OF STORM SEWERS CHAPTER 5 Hydraulic Design of Storm Sewers 15 The hydraulic design of a sewer system may have

More information

Created by Simpo PDF Creator Pro (unregistered version) Asst.Prof.Dr. Jaafar S. Maatooq

Created by Simpo PDF Creator Pro (unregistered version)  Asst.Prof.Dr. Jaafar S. Maatooq Lect.No.9 2 nd Semester Barrages, Regulators, Dams 1 of 15 In order to harness the water potential of a river optimally, it is necessary to construct two types of hydraulic structures, as shown in Figure

More information

DRAINAGE PLAN OF NAU S EASTBURN EDUCATION AND GAMMAGE BUILDINGS FINAL PROPOSAL

DRAINAGE PLAN OF NAU S EASTBURN EDUCATION AND GAMMAGE BUILDINGS FINAL PROPOSAL MAY 10, 2016 DRAINAGE PLAN OF NAU S EASTBURN EDUCATION AND GAMMAGE BUILDINGS FINAL PROPOSAL Connor Klein, Jiangnan Yi, Yuzhi Zhang, Yi Yang NORTHERN ARIZONA UNIVERSITY NAU Water Buffalo Engineering Table

More information

TRENCH FORMER. ABT, INC., 259 Murdock Road, Troutman NC 28166, (800)

TRENCH FORMER. ABT, INC., 259 Murdock Road, Troutman NC 28166,  (800) DESIGN GUIDE POLYDRAIN TRENCH FORMER INTERCEPTOR ABT, INC., 259 Murdock Road, Troutman NC 28166, www.abtdrains.com, (800)438-6057 DISCLAIMER: The customer and the customer s architects, engineers, consultants

More information

Lyon Creek Cedar Way Stormwater Detention Dam Operation and Maintenance Manual

Lyon Creek Cedar Way Stormwater Detention Dam Operation and Maintenance Manual Lyon Creek Cedar Way Stormwater Detention Dam Operation and Maintenance Manual Prepared by: Mike Shaw Stormwater Program Manager City of Mountlake Terrace January 2010 Section I General Information This

More information