Bureau of Road Design


DRAINAGE DESIGN MANUAL

SECTION

PAGE Publication Date
SUMMARY of REVISIONSR-1Aug, 2024
Distribution Memo-COVER-DISCLAIMER-EXECUTIVE SUMMARY ES-1Jan, 2023
LIST OF TABLES LOT-iJan, 2023
LIST OF FIGURES LOF-iJan, 2023
1.0 INTRODUCTION 1-1Jan, 2023
   1.1 ABBREVATIONS AND SYMBOLS1-3Jan, 2023
   1.2 DEFINITIONS1-13Jan, 2023
   1.3 DESIGN PROCEDURE1-19Jan, 2023
   1.4 PROJECT PERMITS1-22Jan, 2023
   1.5 PLAN REQUIREMENTS1-23Jan, 2023
      1.5.1 Drainage Area Sheets1-23Jan, 2023
      1.5.2 Drainage Data Sheet1-25Jan, 2023
      1.5.3 Crossroad Pipes1-25Jan, 2023
      1.5.4 RCB Culverts and Extensions1-28Jan, 2023
      1.5.5 Detention-Storage Structures1-28Jan, 2023
      1.5.6 Road Ditches1-28Jan, 2023
      1.5.7 Storm Sewers1-28Jan, 2023
      1.5.8 Precast Structures1-28Jan, 2023
      1.5.9 Pipe Liners1-29Jan, 2023
   1.6 COMUTER PROGRAMS1-30Jan, 2023
   1.7 REFERENCES1-31Jan, 2023
2.0 DRAINAGE POLICIES 2-1Jan, 2023
   2.1 CHANGES TO DRAINAGE CONDITIONS2-2Jan, 2023
      2.1.1 Changes in Drainage Areas2-3Jan, 2023
      2.1.2 Changes in Permeability of Surfaces2-3Jan, 2023
      2.1.3 Changes in Channels2-3Jan, 2023
      2.1.4 Changes to Drainage Structures2-4Jan, 2023
  2.2 COORDINATION WITH OTHER GOVERNMENTAL AGENCIES2-5Jan, 2023
  2.3 ALLOWABLE WATER SURFACE ELEVATION2-7Aug, 2024
  2.4 RECURRENCE INTERVAL2-8Aug, 2024
  2.5 DETENTION STORAGE DESIGN FOR CULVERTS2-10Jan, 2023
  2.6 ALTERNATE TYPES AND MATERIALS FOR DRAINAGE STRUCTURES2-11Jan, 2023
      2.6.1 Alternate Structure Types2-11Jan, 2023
      2.6.2 Corrugated Metal Pipe2-11Jan, 2023
      2.6.3 Thermoplastic Pipe2-11Jan, 2023
      2.6.4 Precast Structures2-11Jan, 2023
      2.6.5 Proprietary Items2-11Jan, 2023
  2.7 MINIMUM SIZES FOR DRAINAGE STRUCTURES2-12Jan, 2023
  2.8 END TREATMENTS FOR DRAINAGE STRUCTURES2-12Jan, 2023
  2.9 REFERENCES2-14Jan, 2023
3.0 HYDROLOGY3-1Jan, 2023
  3.1 HYDROLOGIC METHODS3-2Jan, 2023
  3.2 RATIONAL METHOD3-3Jan, 2023
      3.2.1 Rational Formula3-3Jan, 2023
      3.2.2 Time of Concentration 3-3 Jan, 2023
      3.2.3 Rainfall Intensity3-4Jan, 2023
      3.2.4 Runoff Coefficients3-5Jan, 2023
      3.2.5 Example: Design Flow by Rational Method3-6Jan, 2023
  3.3 EXTENDED RATIONAL METHOD3-9Jan, 2023
      3.3.1  Three-Variable Regression Equations for Flood Discharge3-9Jan, 2023
      3.3.2  Basin-Average Rainfall Intensity3-10Jan, 2023
      3.2.3  Example Application3-11Jan, 2023
  3.4 THREE-VARIABLE REGRESSION METHOD3-13Jan, 2023
      3.4.1  Regression Equations for CDA less than 30 square miles3-13Jan, 2023
      3.4.2  Regression Equations for CDA greater than than 30 square miles3-16Jan, 2023
      3.4.3  Example: Design Flows from USGS Regression Equations3-18Jan, 2023
  3.5 USGS REGRESSION METHOD FOR KANSAS3-20Jan, 2023
      3.5.1 Overview3-20Jan, 2023
      3.5.2 Computer Program3-20Jan, 2023
      3.5.3 Design Storms 3-20 Jan, 2023
      3.5.4 Rainfall-Runoff Model3-22Jan, 2023
      3.5.5 Streamflow Hydrographs3-31Jan, 2023
      3.5.6 Channel Routing3-32Jan, 2023
      3.5.7 Reservoir Routing3-34Jan, 2023
  3.6 REFERENCES3-35Jan, 2023
4.0 CHANNELS4-1Jan, 2023
  4.1 SITE APPLICATIONS4-2Jan, 2023
      4.1.1 Road Ditches4-2Jan, 2023
      4.1.2 Interceptor Ditches4-2Jan, 2023
      4.1.3 Grade Control Structures4-2Jan, 2023
      4.1.4 Changes to Streams4-2Jan, 2023
  4.2 TYPES OF CHANNEL LININGS4-3Jan, 2023
  4.3 DESIGN CRITERIA FOR ROAD DITCHES4-5Jan, 2023
      4.3.1 Allowable Water Surface and Recurrence Interval4-5Jan, 2023
      4.3.2 Ditch Lining and Stability4-5Jan, 2023
      4.3.3 Cross Section4-6Jan, 2023
      4.3.4 Minimum Grade4-6Jan, 2023
      4.3.5 Scour Protection for Highway Embankments4-6Jan, 2023
   4.4 CHANNEL CAPACITY4-7Jan, 2023
      4.4.1 Manning's Equation for Uniform Flow4-7Jan, 2023
      4.4.2 Geometric Relationships for Trapezoidal Channels4-7Jan, 2023
      4.4.3 Manning's Roughness Coefficient4-9Jan, 2023
      4.4.4 Uniform Flow in Trapezoidal Channels4-11Jan, 2023
      4.4.5 Example: Discharge for Uniform Flow in a Grass-Lined Road Ditch4-12Jan, 2023
      4.4.6 Example: Normal Depth for Given Discharge in a Grass-Lined Road Ditch4-13Jan, 2023
      4.4.7 Example: Discharge for Uniform Flow in an Aggregate-Lined Road Ditch4-13Jan, 2023
      4.4.8 Example: Normal Depth for Given Discharge in an Aggregate-Lined Road Ditch4-15Jan, 2023
      4.4.9 Superelevation in Bends4-15Jan, 2023
   4.5 CHANNEL STABILITY4-17Jan, 2023
   4.6 DESIGN OF ROAD DITCHES WITH GRASS LININGS4-20Jan, 2023
      4.6.1 Procedure4-20Jan, 2023
      4.6.2 Example: Design if Road Ditch with Aggregate Lining4-21Jan, 2023
   4.7 DESIGN OF ROAD DITCHES WITH AGGREGATE LINING4-25Jan, 2023
      4.7.1 Procedure4-25Jan, 2023
      4.7.2 Example: Design of Road Ditch with Aggregate Lining4-26Jan, 2023
      4.7.3 Rates of Application4-28Jan, 2023
  4.8 DESIGN OF ROAD DITCHES WITH CONCRETE LININGS4-30Jan, 2023
      4.8.1 Procedure4-30Jan, 2023
      4.8.2 Example: Design of Road Ditch with Concrete Lining4-30Jan, 2023
  4.9 REFERENCES4-32Jan, 2023
5.0 MEDIAN DRAINAGE5-1Jan, 2023
  5.1 TYPES OF MEDIAN DRAINS5-2Jan, 2023
  5.2 DESIGN CRITERIA5-3Jan, 2023
      5.2.1 Allowable Water Surface5-3Jan, 2023
      5.2.3 Recurrence Interval5-3Jan, 2023
      5.2.4 Median Cross Section and Depth5-3Jan, 2023
      5.2.5 Temporary Erosion Protection5-3Jan, 2023
   5.3 CAPACITY OF MEDIAN DRAINS5-5Jan, 2023
   5.4 DESIGN PROCEDURE FOR MEDIAN DRAINAGE5-10Jan, 2023
      5.4.1 Example: Design of Median Drainage5-10Jan, 2023
6.0 CULVERTS 6-1Jan, 2023
  6.1 TYPES OF CULVERTS6-2Jan, 2023
      6.1.1 Culvert Shapes6-2Jan, 2023
      6.1.2 Reinforced Concrete Boxes6-2Jan, 2023
      6.1.3 Multiple Barrel Culverts6-2Jan, 2023
      6.1.4 End Treatments6-2Jan, 2023
         6.1.4.1 End Sections for Pipe Culverts6-3Jan, 2023
         6.1.4.2 End Treatments for Box Culverts6-4Jan, 2023
      6.1.5 Embedded Culverts6-5Jan, 2023
   6.2 ALIGNMENT OF CULVERTS6-6Jan, 2023
      6.2.1 Horizontal Alignment 6-6Jan, 2023
      6.2.2 Grade6-8Jan, 2023
      6.2.3 Embedment Culverts6-8Jan, 2023
      6.2.4 Hydraulic Geometry of Embedded Culverts6-11Jan, 2023
   6.3 HYDRAULIC ANALYSIS OF CULVERTS6-11Jan, 2023
      6.3.1 Types of Flow in Culverts6-11Jan, 2023
      6.3.2 General Procedure for Culvert Analysis6-13Jan, 2023
      6.3.3 Tailwater Level6-13Jan, 2023
      6.3.4 Outlet Control6-13Jan, 2023
        6.3.4.1 Example: Culvert Analysis for Outlet Control6-23Jan, 2023
      6.3.5 Inlet Control6-27Jan, 2023
        6.3.5.1 Pipe Culverts6-27Jan, 2023
        6.3.5.2 Example: Analysis of Pipe Culvert for Inlet Control6-35Jan, 2023
        6.3.5.3 Example: Embedded Pipe Culvert under Inlet Control6-35Jan, 2023
        6.3.5.4 Example: Analysis of an RCB Culvert for Inlet Control6-38Jan, 2023
      6.3.6 Use of Computer Programs for Culvert Analysis6-38Jan, 2023
   6.4 DESIGN OF CULVERTS FOR PEAK FLOW6-40Jan, 2023
   6.5 ANALYSIS AND DESIGN OF CULVERTS FOR DETENTION STORAGE6-42Jan, 2023
      6.5.1 Example: Detention Storage Analysis of a Culvert6-43Jan, 2023
  6.6 SCOUR PROTECTION AT CULVERT OUTLETS6-48Jan, 2023
  6.7 REFERNCES6-49Jan, 2023
7.0 URBAN DRAINAGE7-1Jan, 2023
  7.1 STREET DRAINAGE7-2Jan, 2023
      7.1.1 Design Criteria7-2 Jan, 2023
      7.1.2 Types of Inlets7-2Jan, 2023
      7.1.3 Location Inlets7-3Jan, 2023
      7.1.4 Discharge Capacity of Gutter and Street7-3Jan, 2023
      7.1.5 Capacity of Inlets on Grade7-5Jan, 2023
      7.1.6 Capacity of Inlets in Sag Locations7-10Jan, 2023
      7.1.7 Discharge for Inlet Design7-11Jan, 2023
      7.1.8 Example: Design of Street Drainage7-11Jan, 2023
  7.2 STORM SEWER7-15Jan, 2023
      7.2.1 Design Criteria7-15Jan, 2023
      7.2.2 System Layout7-15Jan, 2023
      7.2.3 Preliminary Design7-15Jan, 2023
      7.2.4 Hydraulic Grade Line and Final Design7-17Jan, 2023
      7.2.5 Example: Design of a Storm Sewer7-19Jan, 2023
  7.3 REFERENCES7-26Jan, 2023
8.0 STRUCTURAL ASPECTS OF CULVERTS8-1Jan, 2023
  8.1 PIPE INSTALLATION8-2Jan, 2023
     8.1.1 General Procedure8-2Jan, 2023
     8.1.2 Minimum Spacing8-2Jan, 2023
     8.1.3 Pipe Lengths8-2Jan, 2023
  8.2 REINFORCED CONCRETE PIPE8-3Jan, 2023
  8.3 CORRUGATED METAL PIPE8-5Jan, 2023
  8.4 CORRUGATED ALUMINUM PIPE8-23Jan, 2023
  8.5 THERMOPLASTIC PIPE8-35Jan, 2023
  8.6 REINFORCED CONCRETE BOXES8-36Jan, 2023
  8.7 REFERENCES8-38Jan, 2023
INDEXIndex-IJan, 2023

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