Lesson 1 Describe Hydrology and Calculate Drainage Areas
Part A- Basic Principles of Hydrology and How to Use them to Estimate Runoff
Losses That Affect Runoff
Figure 1-2. Bar charts of rainstorms
Rainfall Intensity
Theater of Operations (TO) Design
Figure 1-4. World isohyetal map
Depth of Intensity Conversions
Figure 1-5. Standard rainfall intensity-duration curves
Part B- Delinate A Drainage Area and Estimate the Acreage
Figure 1-6. Delineation of multiple spurs or hills
Figure 1-8. Delineation of a saddle
Stripper Method
Figure 1-10. Area measurement - Stripper Method
Lesson 1 Practice Exercise - EN5465A0022
Lesson 1 Practice Exercise - EN5465A0023
Image - EN5465A0024
Answer Key and Feedback - EN5465A0026
Lesson 2 Calculate Runoff
Theory
Figure 2-1. Flow across a regular drainage basin
Rational Method Design Procedures
Rational Method Design Procedures -Cont.
Table 2-1. Runoff coefficients
Figure 2-2. Sheet flow travel time graph
Table 2-2. Ditch flow travel times
Figure 2-3. Delineated basin
Figure 2-4. Representative flow path 1
Figure 2-5. Example basin
Table 2-3. Basin flow paths
Figure 2-6. Slope representation
Figure 2-7. Slope comparison
Figure 2-8. Basin
Table 2-4. Basin flow paths
Table 2-5. Ditch flow
Part B -Determine the Intensity (I) with and without Pinpoint Data
Table 2-7. Rainfall data - Washington, D.C., 1900-1950
Adjusted "I"
Lesson 2 Practice Exercise - EN5465A0048
Lesson 2 Practice Exercise -Cont. - EN5465A0049
Lesson 2 Practice Exercise -Cont. - EN5465A0050
Lesson 2 Practice Exercise -Cont. - EN5465A0051
Answer Key and Feedback - EN5465A0053
Answer Key and Feedback -Cont. - EN5465A0054
Answer Key and Feedback -Cont. - EN5465A0055
Lesson 3 Calculate Runoff for Successive Areas
Runoff Estimation Summary
Figure 3-1. Schematic example of successive areas
Lesson 3 Practice Exercise - EN5465A0060
Answer Key and Feedback - EN5465A0061
Lesson 4 Design Open Channels
Part A- Hydraulic Theory and The Equation of Continuity
Part B- Manning's Equation
Table 4-1. Values for Manning's "n" and maximum permissible velocities for channel design
Hydraulic Slope
Part C-Ditches and Functions
Part D-Ditch Shapes or Sections
Table 4-2. Ditch sections
Part E-How to Prevent Erosion in an Open Channel Checkdams
Part E-How to Prevent Erosion in an Open Channel Checkdams -Cont.
Riprap and Rubble
Figure 4-3. Comparing hydraulic radii
Figure 4-4. Velocity relationships
Table 4-3. Hydraulic radius (R) and area (A) of asymmetrical triangular channels
Design A Channel for A Roadside Ditch
Table 4-5. First trial velocity
Figure 4-5. Nomograph for Manning's Equation
Find Hydraulic Radius in Ditch Table
Record Area and Depth
Determine if Ditch is Appropriate
Determine Cutting Depth
Lesson 4 Practice Exercise - EN5465A0084
Lesson 4 Practice Exercise -Cont. - EN5465A0085
Answer Key and Feedback - EN5465A0087
Lesson 5 Design Closed Culverts
Figure 5-1. Cross-section of culvert in place
Part B -Four Types of Culverts
Concrete Pipe
Figure 5-3. Lumber culvert cover
Part C -Culvert Placement in Ditch Design
Alignment
Figure 5-6. Maximum culvert specifications for CMP for vehicular traffic on roadways only
Part D -Cover, Bedding, and Fill for CMP
Table 5-2. Minimum cover requirements, in feet, for airfields (CMP)
Backfill
Headwalls and Wingwalls
Figure 5-9. Three types of headwalls
Part E - Design of Pipe Culverts With Unsubmerged Inlets
Figure 5-10. Calculating cover
Table 5-3. Capacity (Qp) and outlet velocity (V) of CM ("n" = .024) (CMP)
Solution - EN5465A0104
Figure 5-11. Calculating cover (sample problem)
Solution -Cont.
Table 5-4. Unsubmerged inlet sample data
Part G -Designing A Culvert for a Roadway
Part G -Designing A Culvert for a Roadway -Cont.
Lesson 5 Practice Exercise - EN5465A0110
Lesson 5 Practice Exercise -Cont. - EN5465A0111
Lesson 5 Practice Exercise - EN5465A0113
Lesson 6 Control Erosion
Figure 6-1. Vertical spacing and longitudinal gradients of terraces
Culvert Erosion Control
Culvert Erosion Control -Cont.
Table 6-1. Erosion classification chart
Table 6-1. Erosion classification chart (continued)
Part C -Conditions Causing Subsurface Erosion
Figure 6-4. Sand blanket method
Subsurface Pipe or Subgrade Drainage Installations
Geotextiles
Lesson 6 Practice Exercise - EN5465A0125
Answer Key and Feedback - EN5465A0126
Drainage Engineering
Part A- Basic Principles of Hydrology and How to Use them to Estimate Runoff
Losses That Affect Runoff
Figure 1-2. Bar charts of rainstorms
Rainfall Intensity
Theater of Operations (TO) Design
Figure 1-4. World isohyetal map
Depth of Intensity Conversions
Figure 1-5. Standard rainfall intensity-duration curves
Part B- Delinate A Drainage Area and Estimate the Acreage
Figure 1-6. Delineation of multiple spurs or hills
Figure 1-8. Delineation of a saddle
Stripper Method
Figure 1-10. Area measurement - Stripper Method
Lesson 1 Practice Exercise - EN5465A0022
Lesson 1 Practice Exercise - EN5465A0023
Image - EN5465A0024
Answer Key and Feedback - EN5465A0026
Lesson 2 Calculate Runoff
Theory
Figure 2-1. Flow across a regular drainage basin
Rational Method Design Procedures
Rational Method Design Procedures -Cont.
Table 2-1. Runoff coefficients
Figure 2-2. Sheet flow travel time graph
Table 2-2. Ditch flow travel times
Figure 2-3. Delineated basin
Figure 2-4. Representative flow path 1
Figure 2-5. Example basin
Table 2-3. Basin flow paths
Figure 2-6. Slope representation
Figure 2-7. Slope comparison
Figure 2-8. Basin
Table 2-4. Basin flow paths
Table 2-5. Ditch flow
Part B -Determine the Intensity (I) with and without Pinpoint Data
Table 2-7. Rainfall data - Washington, D.C., 1900-1950
Adjusted "I"
Lesson 2 Practice Exercise - EN5465A0048
Lesson 2 Practice Exercise -Cont. - EN5465A0049
Lesson 2 Practice Exercise -Cont. - EN5465A0050
Lesson 2 Practice Exercise -Cont. - EN5465A0051
Answer Key and Feedback - EN5465A0053
Answer Key and Feedback -Cont. - EN5465A0054
Answer Key and Feedback -Cont. - EN5465A0055
Lesson 3 Calculate Runoff for Successive Areas
Runoff Estimation Summary
Figure 3-1. Schematic example of successive areas
Lesson 3 Practice Exercise - EN5465A0060
Answer Key and Feedback - EN5465A0061
Lesson 4 Design Open Channels
Part A- Hydraulic Theory and The Equation of Continuity
Part B- Manning's Equation
Table 4-1. Values for Manning's "n" and maximum permissible velocities for channel design
Hydraulic Slope
Part C-Ditches and Functions
Part D-Ditch Shapes or Sections
Table 4-2. Ditch sections
Part E-How to Prevent Erosion in an Open Channel Checkdams
Part E-How to Prevent Erosion in an Open Channel Checkdams -Cont.
Riprap and Rubble
Figure 4-3. Comparing hydraulic radii
Figure 4-4. Velocity relationships
Table 4-3. Hydraulic radius (R) and area (A) of asymmetrical triangular channels
Design A Channel for A Roadside Ditch
Table 4-5. First trial velocity
Figure 4-5. Nomograph for Manning's Equation
Find Hydraulic Radius in Ditch Table
Record Area and Depth
Determine if Ditch is Appropriate
Determine Cutting Depth
Lesson 4 Practice Exercise - EN5465A0084
Lesson 4 Practice Exercise -Cont. - EN5465A0085
Answer Key and Feedback - EN5465A0087
Lesson 5 Design Closed Culverts
Figure 5-1. Cross-section of culvert in place
Part B -Four Types of Culverts
Concrete Pipe
Figure 5-3. Lumber culvert cover
Part C -Culvert Placement in Ditch Design
Alignment
Figure 5-6. Maximum culvert specifications for CMP for vehicular traffic on roadways only
Part D -Cover, Bedding, and Fill for CMP
Table 5-2. Minimum cover requirements, in feet, for airfields (CMP)
Backfill
Headwalls and Wingwalls
Figure 5-9. Three types of headwalls
Part E - Design of Pipe Culverts With Unsubmerged Inlets
Figure 5-10. Calculating cover
Table 5-3. Capacity (Qp) and outlet velocity (V) of CM ("n" = .024) (CMP)
Solution - EN5465A0104
Figure 5-11. Calculating cover (sample problem)
Solution -Cont.
Table 5-4. Unsubmerged inlet sample data
Part G -Designing A Culvert for a Roadway
Part G -Designing A Culvert for a Roadway -Cont.
Lesson 5 Practice Exercise - EN5465A0110
Lesson 5 Practice Exercise -Cont. - EN5465A0111
Lesson 5 Practice Exercise - EN5465A0113
Lesson 6 Control Erosion
Figure 6-1. Vertical spacing and longitudinal gradients of terraces
Culvert Erosion Control
Culvert Erosion Control -Cont.
Table 6-1. Erosion classification chart
Table 6-1. Erosion classification chart (continued)
Part C -Conditions Causing Subsurface Erosion
Figure 6-4. Sand blanket method
Subsurface Pipe or Subgrade Drainage Installations
Geotextiles
Lesson 6 Practice Exercise - EN5465A0125
Answer Key and Feedback - EN5465A0126
Drainage Engineering
