2.0

Table Of Contents
Contents
xviii
Calculating Runoff With the TR-20 Method 594
Calculating the Peak Runoff by Using the TR-20 Method 596
Viewing and Editing the Dimensionless Hydrograph Values 598
Adding a Range of Time Increments to a Dimensionless Hydrograph File
600
Viewing and Editing the Distribution Condition Values 602
Combining Hydrographs 604
Outputting Hydrology Data 605
Drawing a 2D Polyline to Use as a Cross Section Sampling Line 606
Plotting Single Sections 606
Outputting Data in the HEC-2 Format 607
HEC-2 Data Structure 608
Sampling the Cross Sections from the Current Surface and Output in the
HEC-2 Format 610
Changing the HEC-2 Output Settings 611
Sampling the Cross Sections Along an Alignment at Station Increments
and Output in the HEC-2 Format 613
Importing the HEC-2 Cross Sections into a Drawing 615
Importing HEC-2 Profiles Into a Drawing 615
Hydrology Bibliography 620
Chapter 6 Working with Pipes 621
Overview of Working With Pipes 622
Changing the Pipe Settings 622
Customizing the Pipe and Coefficient Tables 622
Customizing the Pipe Diameter and Slope Values Table 623
Customizing the Roughness Coefficient Tables 625
Using the Mannings n Formula 626
Using the Hazen-Williams Formula 627
Using the Darcy-Weisbach Formula 628
Changing the Exaggeration Factor Settings for Pipes and Nodes 629
Changing the Pipe Run Editor Settings from the Settings Dialog Box 630
Changing the Range Check Settings for Pipes 632
Changing the Default Settings for Defining New Pipe Runs 633
Changing the Default Pipe Data Settings 633
Changing the Default Node Data Settings 635
Changing the Layer Settings for Pipes 636
Changing the Plan Layer Settings for Pipes 636
Changing the Profile Layer Settings for Pipes 637
Changing the Cross Section Layer Settings for Pipes 638