GEOPAK Drainage Course Guide

GEOPAK Drainage

Course Guide

Bureau of Highway Development Design Division

Lansing, Michigan October 2014

October 2014 MDOT GEOPAK Drainage Course Guide

FOREWARD

Description

The MDOT GEOPAK Drainage Course Guide will allow the students to review the hydraulic design

capabilities of a MDOT project and complete the plans preparation process. When completed, students

will be able to place drainage structures, connect them with a conveyance system, compute the

hydraulics of a drainage network and label the plans. Reports will be generated as well such as the

Storm Sewer, Inlet Spacing and Hydraulic Grade Line Tabulation Sheets.

Topics Covered

Drainage Library

Project Preferences

Drainage Nodes

Drainage Areas

Drainage Links

Drainage Networks

Drainage Profiles

Design Revisions

Drainage Navigator

Drainage Reports

Plans Preparation

Automated Quantities

Warning Messages

Prerequisites

Experience with CADD software, specifically MicroStation and GEOPAK is useful. The following course is

recommended before attending GEOPAK Drainage training:

Microstation Essentials from Bentley LEARN

TableofContents

October2014 MDOTGEOPAKDrainageCourseGuide i

MDOTGEOPAKDrainageCourseGuide

1INTRODUCTION 1‐1

1.1 Project Files 1‐2 1.2 Drainage Components 1‐2 1.3 Accessing GEOPAK Drainage 1‐2 1.4 Creating a Drainage Project 1‐3

2DRAINAGELIBRARY 2‐1

2.1 Introduction 2‐1 2.2 Rainfall 2‐2 2.3 Land Use 2‐2 2.4 Nodes 2‐3 2.5 Links 2‐4 2.6 Spread Section 2‐5 Exercise 2.1 – Getting to Know the Drainage Library 2‐7

3PROJECTPREFERENCES 3‐1

3.1 Introduction 3‐1 3.2 Units 3‐1 3.3 Project Components 3‐2 3.4 Rainfall Parameters 3‐3 3.5 Land Use Options 3‐4 3.6 Frequency Options 3‐4 3.7 Intensity Option 3‐5 3.8 Junction Losses 3‐6 3.9 Inlet Options 3‐7 3.10 Node Options 3‐8 3.11 Link Options 3‐9 3.12 Profile Options 3‐10 3.13 Plan Symbology 3‐11 3.14 Updates 3‐12 3.15 Save Options 3‐13 3.16 Drainage Preference File 3‐13 3.17 Drainage Project 3‐13 Exercise 3.1 – Create a Drainage Project 3‐14 Exercise 3.2 – Create a Project Preferences File 3‐17

4DRAINAGENODES 4‐1

4.1 Introduction 4‐1 4.2 Node Configuration Dialog 4‐1

4.2.1 Properties 4‐2 4.2.2 Location 4‐2 4.2.3 Spread Criteria 4‐4 4.2.4 Elevations 4‐6 4.2.5 Junction Loss 4‐8 4.2.6 Discharge Options 4‐8 4.2.7 Computations 4‐9

Exercise 4.1 – Create Nodes 4‐10

TableofContents

October2014 MDOTGEOPAKDrainageCourseGuide ii

5DRAINAGEAREAS 5‐1 5.1 Introduction 5‐1 5.2 Drainage Area Dialog 5‐2

5.2.1 Definition 5‐2 5.2.2 Subareas 5‐3 5.2.3 Computation 5‐4

5.3 DTM Drainage Tools 5‐4 Exercise 5.1 – Create Areas 5‐7

6DRAINAGELINKS 6‐1

6.1 Introduction 6‐1 6.2 Link Configuration Dialog 6‐2

6.2.1 Definition 6‐2 6.2.2 Conditions 6‐4 6.2.3 Constraints 6‐5 6.2.4 Computation 6‐5

Exercise 6.1 – Create Links 6‐6 7DRAINAGENETWORKS 7‐1

7.1 Introduction 7‐1 7.2 Network Configuration Dialog 7‐1 Exercise 7.1 – Create a Network 7‐3

8DRAINAGEPROFILES 8‐1

8.1 Introduction 8‐1 8.2 Edit Drainage Profile Dialog 8‐2

8.2.1 Registration 8‐2 8.2.2 Display 8‐3 8.2.3 Drainage Information 8‐4 8.2.4 Grid & Labels 8‐4 8.2.5 Link Profile 8‐5

8.3 Preference File 8‐5 8.4 Automated Profile Builder 8‐5 8.5 Miscellaneous Utilities 8‐7 Exercise 8.1 – Create a Profile 8‐8 Exercise 8.2 – Check for Utility Conflicts 8‐10

9DESIGNREVISIONS 9‐1

9.1 Edit Area, Node & Link Dialogs 9‐1 Exercise 9.1 – Common Network Modifications 9‐3

9.1.1 Adding a New Node 9‐3 9.1.2 Modify Link Connections 9‐6 9.1.3 Redesign a Network 9‐8

Exercise 9.2 – Analyze Different Storm Frequencies 9‐10

10DRAINAGENAVIGATOR 10‐1

10.1 Introduction 10‐1 10.2 Navigator Dialog 10‐2 10.3 Global Editor Dialog 10‐3 Exercise 10.1 – Querying 10‐4 Exercise 10.2 – Batch Editing 10‐5

TableofContents

October2014 MDOTGEOPAKDrainageCourseGuide iii

11DRAINAGEREPORTS 11‐1

11.1 Introduction 11‐1 11.2 Standard Reports 11‐1 11.3 Report Builder 11‐3 11.4 MDOT Drainage Tabulation Sheets 11‐5 Exercise 11.1 – Customized Reports 11‐7 Exercise 11.2 – Create MDOT Drainage Tabulation Sheets. 11‐8

12PLANSPREPARATION 12‐1

12.1 Introduction 12‐1 12.2 Renumber Nodes 12‐1 12.3 Drainage Labeler 12‐3 Exercise 12.1 – Renumbering 12‐4 Exercise 12.2 – Plan View Labeling 12‐5

12.2.1 Labeling Drainage Structures 12‐5 12.2.2 Labeling Pipes 12‐9

13AUTOMATEDQUANTITIES 13‐1Pending…

14WARNINGMESSAGES 14‐1

14.1 Preferences 14‐1 14.2 Areas 14‐1 14.3 Nodes 14‐1 14.4 Links 14‐2 14.5 Networks 14‐3 14.6 Profiles 14‐4 14.7 Navigator 14‐4 14.8 Renumbering Nodes 14‐4 14.9 Reports 14‐4

Introduction

October 2014 MDOT GEOPAK Drainage Course Guide 1-1

1 INTRODUCTION

GEOPAK Drainage is a comprehensive software program for designing and analyzing drainage

conveyance facilities. This program has the ability to integrate with roadway geometric design

parameters to create a seamless exchange of data for the drainage design process. During this process,

the drainage graphics are simultaneously created as modeling computations are carried out. These

computations include both hydrologic and hydraulic aspects, offering a complete model all in one

program. Any one project can contain multiple networks, in which drainage areas, catch basins,

manholes, storm sewers and ditches can comprise a complete surface runoff collection system. The

workflow of this software is traditional to the conventional drainage design process starting with placing

drainage structures where needed to handle contributing runoff areas and subsequently connecting

them with conveyance measures to discharge to an outfall. The placement of drainage facilities utilizes

interactive dialogs and visualization within a geospatial environment to promote a user-friendly,

accurate design.

The ability to sync with roadway geometrics creates superior efficiency during drainage design. These

geometrics include alignments, profiles and digital terrain models with which GEOPAK Drainage reads

directly. Any modifications to the roadway design will be automatically updated in the drainage design.

This reduces risk for errors and enhances efficiency for design changes or redesigns concerning drainage

facilities. Not only will the modifications be able to be visualized in real-time, but updated data such as

station, offset and elevation will be generated at the new location.

Most computations in GEOPAK Drainage use recommended methodologies as presented in the FHWA

publication “Drainage of Highway Pavements” and the AASHTO Model Drainage Manual. These

methodologies along with the formulas used can be found in the Technical Reference section of the

Help menu. As of October 2014, GEOPAK Drainage is only approved by MDOT for use in designing

drainage conveyance systems consisting of storm sewer or ditch facilities using the Rational Method.

Culvert design capabilities with this software are not approved for use on any MDOT projects.

NOTE: This Course Guide contains directory references specific to MDOT users. External users will need

to refer to equivalent directories on their respective data network. For technical issues and/or guidance

regarding the calculations performed by GEOPAK Drainage, please contact the MDOT Hydraulics Unit

Supervisor.

The MDOT GEOPAK Drainage Course Guide is to be used for software guidance only and is not meant to

provide drainage design criteria, which can be found in the MDOT Drainage Manual.

Introduction


1.1 Project Files

GEOPAK Drainage requires five major files in order to provide a complete functioning product to the

drainage designer:

File Type Description

GEOPAK Drainage File (.gdf)

This binary file contains all the hydrologic and hydraulic information about a project’s drainage systems. This includes preferences, element symbology, geospatial data, connectivity and hydraulic properties.

Drainage Library File (.dlb) Utilizes MDOT standards for rainfall, land use, drainage structures, storm sewers and typical spread sections.

Drainage Cell Library File (.cel) Contains cells for MDOT drainage structures. The Drainage Library references these cells to create nodes.

File Type Description

Design and Computation Manager Database (.ddb) Contains Pay Items to be assigned to drainage materials. Allows for automating quantity calculations.

MicroStation Design File (.dgn) A graphics file for the visualization of 2D elements that make up the drainage project.

1.2 Drainage Components

Component Description

Node A drainage structure located at a user-defined point.

Drainage Area

A closed boundary or defined value per node. Since each area is associated with one node, the ID for each should be the same. Multiple subareas of various land uses with different ‘C’ values can comprise a single drainage area with a composite ‘C’ value.

Link A storm sewer or ditch that connects two nodes from upstream to downstream.

Network A system of connected nodes and links with a single outfall. One project can have multiple networks.

1.3 Accessing GEOPAK Drainage

Once a two dimensional MicroStation file has been created, GEOPAK Drainage is accessed through the

MicroStation pull-down menu bar: GEOPAK > Drainage > Drainage. Once this has been invoked a pull-

down menu item will appear called “Drainage”.

Introduction


The Drainage menu bar will also be displayed at this point:

The Drainage Tool Box can be accessed under Tool Boxes > Main.

All GEOPAK Drainage functions and tools can be accessed through either of these menus to complete a

project. By default, Drainage starts in an “Untitled”, new project each time it is started. Users will have

to create a new project or open an existing project under Project > Open… and navigate to the file path

where it is saved.

1.4 Creating a Drainage Project

From the MicroStation pull-down menu: Drainage > Project > New

From the Drainage menu bar: Project > New

From the Drainage Tool Box:

Type a logical name into the File Name field and navigate to the desired project directory.

Click Save

Drainage Library


2 DRAINAGE LIBRARY 2.1 Introduction

The Drainage Library contains standards specific to MDOT approved for use on all MDOT projects. Each

GEOPAK Drainage project accesses this library by default and is located at M:\MDOT_02

Workspace\Projects\MDOT_02\Civil Classic\Drainage\MDOT_Drain_Lib.dlb. This library can be

opened from the MicroStation pull-down menu, Drainage menu bar or the Drainage Tool Box.

MicroStation pull-down menu: Drainage > Project > Drainage Library

From the Drainage menu bar: Project > Drainage Library


Once invoked, the library dialog will appear:

There are five categories the standards are stored in:

Rainfall Tables

Land Use

Nodes (catch basins, manholes, etc.)

Links (storm sewers)

Spread Sections

Drainage Library


2.2 Rainfall

The Drainage Library contains rainfall data for the 10 rainfall frequency zones in the state of Michigan.

This data is in the form of Intensity-Duration Frequency (IDF) Tables to be utilized by the Rational

Method for hydrology computation. To open these tables simply double click a zone and the following

dialog will appear:

2.3 Land Use

Land Use items store runoff ‘C’ values through level symbology. There are 11 land use items stored to account for the different types of land uses that could be encountered on a project.

By utilizing the Land Use Boundary Tools to set the correct symbology along with the Automatic Delineation tool to create subareas (See “Drainage Areas”), composite ‘C’ values can be automatically computed. Creating shapes can be completed by picking boundary elements or by data points. Shapes that have been previously created can be changed to the correct symbology through the “Select Shape” tool. These tools can be accessed through the following methods:

Drainage Library


From the MicroStation pull-down menu: Drainage > Component > Land Uses

From the Drainage menu bar: Component > Land Uses


Once opened, the Land Use Boundary Tools dialog will appear as shown below:

2.4 Nodes

The Nodes tab stores drainage structures, end sections and headwalls standard to MDOT. Different Node Types such as Grate, Curb and Grate, Junction, Outlet and Headwall contain the respective standard MDOT drainage structures as shown below:

Drainage Library


Contained within each individual node is the Item ID, Description, Plan View Cell path and dimensions needed for inlet and spread computations. Double-clicking each Element ID will open the individual properties for that Node Item. Below is an example of an individual Node Item:

2.5 Links

The Links tab contains Pipe items approved for use on a MDOT project. Different shapes such as circular, elliptical and box as well as different materials such as concrete, aluminum, plastic and steel can be used from the Drainage Library.

Drainage Library


Double-clicking each Element ID opens a Pipe item for each link size. This is where specific information about size, roughness coefficient, thickness and trench details are stored. This information is needed for hydraulic and minimum cover computations.

2.6 Spread Section

Spread sections are library items that store pavement widths, cross slopes and roughness coefficients for MDOT roadway typical sections. These typical sections include urban and rural freeways, ramps and shoulders. The Department has created typical spread sections without gutter widths or cross slopes. Users will need to add gutter sections and non-typical roadway sections to the Spread Criteria Option in the Node Configuration dialog for accurate spread computations to be carried out (See “Drainage Nodes”).

Drainage Library


By double-clicking each Element ID, each spread section’s properties can be reviewed. Here is an example of an urban freeway spread section:

Spread computations are based on the following composite gutter diagram:

NOTE: Numbers 1, 2 and 3 refer to the entry slots under the Spread Criteria in the Node Configuration dialog.

Drainage Library


Exercise 2.1 – Getting to Know the Drainage Library

2.1.1 Rainfall

1. Open the MicroStation file: C:\Temp\MDOT_GEOPAKDrainageTrainingClass\118329drain.dgn

2. Open GEOPAK Drainage from the MicroStation pull-down menu: GEOPAK > Drainage >

Drainage

3. Open the Drainage Library from the Drainage menu bar: Project > Drainage Library 4. Go to File > Open to open the MDOT standard Drainage Library at M:\MDOT_02

Workspace\Projects\MDOT_02\Civil Classic\Drainage\MDOT_Drain_Lib.dlb. 5. Select the Rainfall tab. 6. Double-click Zone 1.

7. Review the Data Source Item. The rainfall values in this table are from the MDOT Drainage Manual, Chapter 3 – Hydrology.

8. Click Cancel, but do not close the Drainage Library.

Drainage Library


2.1.2 Land Use

1. Select the Land Use tab.

2. Double-click the MDOT Rational Runoff Coefficients (C) Element ID.

3. Review the runoff coefficients and level symbology associated with the different Land Use

Descriptions.

4. Click Cancel.

2.1.3 Spread Section

1. Select the Spread Section tab.

2. Double-click the Rural 12’ Lane + 10’ Outside Shld Element ID (MDOT Rural Freeway Outside).

3. Review the spread section data for each cross slope.

4. Click Cancel.

5. Close the Drainage Library.

6. Exit GEOPAK Drainage.

7. Exit MicroStation.

Project Preferences


3 PROJECT PREFERENCES

3.1 Introduction

The Project Preferences are used to set criteria for project data. This includes Units, Project Components, Rainfall Parameters, Land Use Options, Frequency Options, Intensity Option, Junctions Losses, Inlet Options, Node Options, Link Options, Profile Options, Plan Symbology, Updates, and Save Options. MDOT has created a template preferences file, which serves to maintain minimum standards consistent with the MDOT Drainage Manual. This file is located at M:\MDOT_02Workspace\Projects\ MDOT_02\Civil Classic\Drainage\MDOT_Drain_Pref.dpf. For each project, additional project-specific data should be included in the preferences first before design begins. This data may include file paths to important information (DLB, .gpk, .tin, etc.), rainfall zone and design storm frequency. The preferences can be accessed through the following methods: MicroStation pull-down menu: Drainage > Project > Preferences

From the Drainage menu bar: Project > Preferences


3.2 Units

The two options for the project units are English or Metric. Mixing units in the same project is not

supported. Setting the units in this dialog establishes the input and output units.

Project Preferences


3.3 Project Components

This dialog contains the directories of the files to be used by a project.

Field Description

Drainage Library File (DLB) This specifies the Drainage Library file to be used on a project. This file can be found at M:\MDOT_02 Workspace\Projects\MDOT_02\Civil Classic\Drainage\MDOT_Drain_Lib.dlb

GPK Job Number This is the GEOPAK coordinate geometry database, which stores the roadway design geometrics such as chains (alignments), points and profiles. This can only be used if there is a GEOPAK Road project.

User Preferences These are the User Preferences from the GEOPAK Road project.

Drainage Cell Library This file stores the cells that are used for the nodes in the DLB. This should be set to M:\MDOT_02Workspace\Projects\MDOT_02\Elements\Cells\ Dr_Drain_2D.cel

Criteria Directory Not applicable for MDOT projects

DDB The Design and Computation Manager database can be used to match pay items to Drainage Library items. However, due to some drainage pay items being based on depth and other factors, manual assignment of pay items may be necessary after the network design is completed.

Water and Sewer Project This is an optional file path for a Geopak Water and Sewer Project.

Superelevation Shapes File Not applicable for MDOT projects

Site Project Not applicable for MDOT projects

Original Ground

A TIN file can be selected to reference existing elevations and spread sections automatically or to display the existing ground on drainage profiles.

Project Preferences


Design Surface A TIN file can be selected to reference proposed elevations and spread sections automatically or to display the proposed ground on drainage profiles.

3.4 Rainfall Parameters

The Rainfall Parameters set the Rainfall Source that will be used to calculate the intensities and discharges on a project. These come from the Drainage Library loaded under Project Components.

Field Description

Rational Method Rainfall Source

The Rational Method is standard for the design of drainage conveyance systems on MDOT projects. The Rainfall Source for this method should be set to the MDOT Rainfall Frequency Zone that the project is located in.

SCS Method Rainfall Source The SCS Method is not standard for the design of MDOT drainage conveyance systems using GEOPAK Drainage and should not be used.

Project Preferences


3.5 Land Use Options

The Land Use Options can be used to automate runoff coefficient computations for drainage areas by delineating subareas for a project. Land Use Items are stored in the Drainage Library consistent with the MDOT Drainage Manual.

3.6 Frequency Options

The Frequency Options is the source for the frequency at which discharge computations will be based. Other storm frequencies can be designed for by simply changing the drop-down menu. However, multiple storm frequencies cannot be computed simultaneously. Each network needs to be designed or analyzed (See “Drainage Networks”) in order for the active frequency to be applied. The Drainage Library that is displayed here is set in the Project Components. The Computation Frequency for the Rational Method was established within the library based on MDOT Rainfall IDF Tables for each Michigan Rainfall Frequency Zone. The SCS Frequency Options will not be supported on MDOT projects. A Runoff Coefficient Peaking Factor can also be set here.

Project Preferences


3.7 Intensity Option

This Intensity Option contains the intensity computation options for a project.

Project Preferences


Field Description

Drainage Library (DLB) This is the file set in the Project Components.

Minimum Time of Concentration The minimum allowable time to be used for discharge computations (minutes).

Accumulate Pipe Flow Time by Select one of the three travel time options through the pipes: Iterative Velocity, Full Flow Velocity and Uniform Velocity.

Intensity Options This option allows for absolute (constant) or computed intensities to be used in discharge computations. The Weight Time of Concentration option will limit the discharge from decreasing.

Inlet Computation Only Absolute Intensity values will override the DLB values. This number is based on in/hr or mm/hr based on the units specified previously.

3.8 Junction Losses

For MDOT projects, junction losses will be defined for each individual node through an Absolute Loss.

This sets a fixed head loss to nodes using values of 0.1 for 180° storm sewer orientations between an

inlet and outlet pipe and 0.2 for any bends in storm sewer orientation or multiple inlet pipes at a node.

Exit losses will be computed per the MDOT Drainage Manual by using the Loss Coefficients listed below

and the defined equations in the software. Absolute Loss values can be placed under the Node

Configuration – Junction Loss Option (See “Drainage Nodes”). If ‘Disable All Junction Loss Computations’

is toggled on it will be applied throughout a project.

Project Preferences


3.9 Inlet Options

This Inlet Options allow the user to set default inlet variables that will be used in the Node Configuration

dialog throughout a project.

Field Description

Inlet By Pass Options Determines the method of how Inlet By Pass flows are accounted for in the storm sewer system.

Link By Pass Flow Options Determines the method of how Inlet By Pass flows are accounted for in Link discharge computations.

Default Spread N Value This is the default Manning’s roughness coefficient (n) for pavement runoff to be used in spread computations.

Extend Superelevation Shapes to Inlet at Shape Slope

Not applicable for MDOT projects.

Project Preferences


3.10 Node Options

The Node Options allows the user to set default node variables for a project.

Field Description

Default Node ID Prefix The Node Prefix will be added to the node name and then automatically sequenced by one. For example, if the Node prefix is ‘CB-‘ the first Node stored will be CB-1, followed by CB-2, CB-3 and so on.

Scale Node Cells A scale can be given to adjust the size of node cells.

Minimum Freeboard

This is the minimum distance allowed from the node elevation to the hydraulic grade line. If the hydraulic grade line goes above this distance a warning will be triggered.

Project Preferences


3.11 Link Options

The Link Options set the default storm sewer design constraints.

Field Description

Default Link ID Prefix

The Default Link ID Prefix is similar to the Node ID Prefix. Enter a prefix and then it will be automatically be sequenced by one. For example, if the prefix is ‘ST-‘ the first link stored will be ST-1, followed by ST-2, ST-3 and so on.

Link Profile Options Design Optimization and Elevation Options both must be selected because computations such as invert elevations, lengths and slopes are based on these selections. For a more detailed explanation refer to the GEOPAK Drainage Help Files.

Link Design Options Storm sewers should be designed for Partial Capacity with a d/D Ratio of 0.9 for MDOT projects.

Link Criteria File Not applicable for MDOT projects.

Hydraulic Gradeline Options Equal Energy Gradeline must be selected as the Hydraulic Gradeline Basis for MDOT projects.

Project Preferences


3.12 Profile Options

The Profile Options set the default profile variables for a project.

Field Description

Default Profile ID Prefix

The Default Profile ID Prefix is similar to the Node and Link ID Prefixes. Enter a prefix and then it will be automatically sequenced by one. For example, if the prefix is ‘PRO-‘ the first profile stored will be PRO-1, followed by PRO-2, PRO-3 and so on.

Create Cogo Chains and Profiles With this option, links will be stored in the coordinate geometry (COGO) database (.gpk). The chains and profiles created will be stored with the same naming convention as the link.

Project Preferences


3.13 Plan Symbology

The Plan Symbology option sets the plan view parameters for the drainage graphics. The Linear

symbology sets parameters for elements and the Text symbology sets parameters for MicroStation text.

This symbology has been set by MDOT to standard levels. “Set Node Cell Symbology” should always be

turned off so as to not override the cell symbology for nodes.

Project Preferences


3.14 Updates

The Updates Option allows the user to determine what automatic updates will occur when design

changes are made. These can be changed anytime during the design process.

Project Preferences


3.15 Save Options

The Save Options allows the user automatically save the preferences. It’s recommended that the

‘Automatically Save Drainage Updates’ and the ‘Automatic Save’ is toggled on. Toggling ‘Automatic

Backup’ on will create a backup file (.bak) in the current working directory when a project is opened.

3.16 Drainage Preference File

To save the Project Preferences simply select File > Save As… and save the file (.dpf) to a location in the

project directory.

NOTE: It is recommended that a copy of a project-specific preferences file be saved to the project

directory, separate from the MDOT template Project Preferences file. This allows for a one-time setup

of the Project Preferences to be loaded each time a project is opened.

To print the Project Preferences simply go to the Drainage menu bar and select Project > Export >

Preferences to ASCII. Save the ASCII file (.drp) to the project directory. Open this file with Notepad to

view the preferences being used for a particular project.

3.17 Drainage Project

To save a Drainage project go to the Drainage menu bar and select Project > Save.

To exit go to the Drainage menu bar and select Project > Exit.

It is good practice to save then exit a Drainage project before closing MicroStation.

Project Preferences


Exercise 3.1 – Create a Drainage Project

1. Open the MicroStation file: C:\Temp\MDOT_GEOPAKDrainageTrainingClass\118329drain.dgn

2. Open Project Manager: GEOPAK > ROAD > Project Manager

3. Select project: C:\Temp\MDOT_GEOPAKDrainageTrainingClass\118329.prj and click OK.

4. Select Users > New…

Project Preferences


5. Type in your Name, Full Name and OP Code (initials) and click OK.

Click No when prompted to define a password.

6. Highlight [Your First Name] and click OK.

Project Preferences


7. The Road Project dialog will then appear. Set the Working Directory from the MicroStation pull-

down menu: GEOPAK > Road > User Preferences. In the Working Directory field click the

spyglass icon and navigate to C:\Temp\MDOT_GEOPAKDrainageTrainingClass and click OK

twice.

8. Open GEOPAK Drainage from the MicroStation pull-down menu: GEOPAK > Drainage >

Drainage

9. Create a new drainage project from the Drainage menu bar: Project > New…

Type the job number 118329 as the name of the project in the File name field and click Save to

save the new project as a GEOPAK Drainage File (.gdf) to the following directory:

C:\Temp\MDOT_GEOPAKDrainageTrainingClass\118329.gdf

Project Preferences


Exercise 3.2 – Create a Project Preferences File

1. Open the Preferences dialog from the Drainage menu bar: Project > Preferences

2. Open the MDOT standard project preferences file: File > Open… then navigate to M:\MDOT_02

Workspace\Projects\MDOT_02\Civil Classic\Drainage\MDOT_Drain_Pref.dpf and click Open.

3. Under the Project Components Option load the GPK Job Number, Original Ground TIN file and

the Design Surface TIN file by clicking on the spyglass icons next to each field ( ).

Project Preferences


4. Under the Rainfall Parameters Option select the Michigan rainfall frequency zone the project

resides in, which is Zone 6 in this case.

5. Under the Frequency Options specify the Computation Frequency to be designed for, which will

be the 10 Year storm frequency.

Project Preferences


6. Under the Intensity Option specify the correct Minimum Tim of Concentration. For this project

it will be 15 minutes.

7. Save these project preferences in the project directory to be used in the future: File > Save As…

> C:\Temp\MDOT_GEOPAKDrainageTrainingClass\118329_GD_Pref.dpf

8. Click OK and Yes to store the changes.

Drainage Nodes


4 DRAINAGE NODES

4.1 Introduction

Drainage nodes in GEOPAK Drainage consist of the drainage structures that collect stormwater runoff,

connect storm sewers or discharge flow to appropriate outfalls. They define the type of drainage

structure, location, geometric parameters and spread criteria to be considered. These properties are

derived from the Drainage Library, which references the standard MDOT drainage cell library. Drainage

nodes can be created and modified by executing the following commands:

MicroStation pull-down menu: Drainage > Component > Node

From the Drainage menu bar: Component > Node


4.2 Node Configuration Dialog

The Node Configuration dialog contains seven Option panels, which define or output all the data needed

to successfully create a drainage node.

Drainage Nodes


The Node ID at the top of the dialog confirms which node the dialog is referring to. There are also tools

to toggle which can Window Center or Highlight the active Node ID in the current View. The button

tools from left to right are ID Drainage Node, Add Node, Delete Node, Rename Node and Edit Area. By

clicking Apply, data entered into the fields contained within each of the different Options will be stored

for the active Node ID.

4.2.1 Properties

The Properties Option contains the following fields that are applicable to MDOT drainage design:

Field Description

Description (optional) Additional description as necessary

Node Type Defines the standard MDOT drainage structure to be used. These structures are divided into the following categories according to their inherent properties: Grate, Curb and Grate, Junction, Other, Outlet and Headwall.

Profile Specifies the roadway profile condition at the node location – either On Grade or Sag. This field affects spread computations.

Library Item Provides a list of drainage structures according to the Node Type. Reads stored Drainage Library Node Element ID’s.

By Pass to Node The downstream node from which the active node’s by-pass runoff flow will discharge into.

Max By Pass The allowable by-pass flow of the active node. Use for querying purposes.

Override Library Payitem

Allows the user to define a node with a quantity pay item through a Design and Computation Manager database (DDB).

NOTE: The Node Bottom field is not applicable for MDOT projects.

4.2.2 Location

The Location Option locates nodes with accuracy anywhere on a project. Utilizing data stored in a

geometric database (.gpk) is possible, which allows different chains and profiles to be chosen

Drainage Nodes


depending on which roadway the user needs to design. This allows stations and offsets to be

entered for various horizontal alignments. Also, the node elevation can be automated in this way

by reading the vertical profile alignment. If no chain or profile is available, nodes are placed

according to the coordinates in the MicroStation design file.

Field Description

Chain A defined horizontal alignment stored in the geometric database (.gpk) file.

Profile A defined vertical alignment stored in the geometric database (.gpk) file.

Align

Defines the orientation of a node. At Point places a node at the active angle at the current or dynamic coordinates. Tangent to Chain places a node tangent to the selected chain. Tangent to Element places a node tangent to any element along its length by

using the ID button to the right. Tangent on Element places a node tangent directly on any element, again using the ID button.

Angle Rotates a node to be properly aligned by a defined angle of rotation.

Station and Offset

Nodes can be set at manually entered station and offset values. Using the Tangent on Element setting will compute the offset automatically. Station equations are supported; however the user will need to enter the region name (R 1, R 2, R 3, etc.) in the station field. NOTE: Negative offsets refer to the left side of an alignment and positive offsets refer to the right side.

Mirror Node When checked, the node orientation will be flipped about the active angle axis or the tangential axis relative to the chain or element selected.

Offset to Gutter to Inlet

Hydraulic computations assume the cover is at the curb. If a distance between the cover and the curb is required, that value may be entered in this field. This will allow for the computations to account for the by-pass flow that will occur and adjust the discharge into the node accordingly.

NOTE: Offsets for catch basins or inlets with a Cover K will have to be adjusted to hold the back of curb instead of the edge of

pavement.

Drainage Nodes


4.2.3 Spread Criteria

The Spread Criteria Option contains the geometric parameters of the roadway to compute spread

or inlet spacing calculations. These calculations are based on the FHWA Hydraulic Engineering

Circular No. 22 (HEC-22) methodology and the following composite gutter section:

NOTE: Numbers 1, 2 and 3 refer to the entry slots for Spread Source under the Spread Criteria in the Node Configuration dialog

There are two different profile conditions taken into consideration for spread computations. The

first is for On Grade nodes that are located somewhere between a crest and sag curve of a profile.

The second is for Sag nodes, which are located at the low point of a sag curve of a profile.

On Grade Nodes: The Spread Criteria panel for On Grade nodes looks as follows:

Field Description

Longitudinal Slope Source

User Supplied Manually entered value in terms of percentage.

Reference PGL (Profile Grade Line)

Slope will be automatically populated by reading the geometric database (.gpk) file at the specific node station. Any updates made to the referenced profile will be reflected in this field using this option. NOTE: The longitudinal slope may not be the same at the node location as it is at the PGL in a super-elevated roadway section.

Shape Not applicable

Drainage Nodes


Spread Source

User Supplied

Manually entered values for spread section width, cross slope (%) and roughness coefficient per cross slope break. Users should start at the curb and proceed towards the travel way.

Reference TIN

Spread sections will be automated by reading a TIN file based on the DTM. Proper consideration should be made to ensure the correct TIN file is populated in the Elevations Option (existing vs. proposed).

Library Item

A pre-determined Spread Section based on a roadway typical section from the Drainage Library can be chosen. This section will be applied to the entire drainage area to the node. NOTE: After a Library Item has been selected, the Spread Source can be changed to User Supplied to allow for gutter sections and non-typical sections to be added.

Shape/Shape and Lib. Item

Not applicable

Maximums

Pond Depth

Maximum depth of gutter flow allowed. Does not affect computations, but will invoke a warning message if computed values are greater. Used to compute capacities of nodes located in a sag condition.

Pond Width

Maximum width of gutter flow allowed. Does not affect computations, but will invoke a warning message if computed values are greater.

Sag Nodes: The Spread Criteria panel for Sag nodes looks as follows:

Drainage Nodes


The only difference between the On Grade and Sag Spread Criteria options is that the Longitudinal

Slope Source field is substituted for percentage fields for slope and discharge, left and right of the

node. This is because spread computations do not depend on flow characteristics in the longitudinal

direction at the sag location. However, the approaching spread must be calculated near sag

locations. The fields specific to sag locations are described as follows:

Field Description

% Slope Left and Right Defines the slope in percentage approaching the sag location from the left and right. The left and right directions are arbitrary, however it is recommended that Left = Back Station and Right = Ahead Station.

% Discharge Left and Right Defines the percentage of discharge approaching the sag location from the left and right. The left and right directions are arbitrary, however it is recommended that Left = Back Station and Right = Ahead Station.1

1 If a sag location receives bypass flow from upstream, the bypass flow will be split according to the % Discharge Left and

Right ratio by default. To account for this, spread computations will have to be carried out twice. The first calculation will

be to obtain the amount bypass flow. The second will be to adjust the % Discharge Left and Right ratio to accurately

account for any bypass flow from the direction it is coming from.

NOTE: For questions on when to use additional sag inlets, please contact the MDOT Hydraulics Unit

Supervisor.

4.2.4 Elevations

The Elevations Option allows the elevation of a node to be set from a variety of different sources,

determine how attached storm sewers are to be aligned and provide limits to the minimum and

maximum depths. Referencing a TIN file, PGL or PGL + Spread Section as an Elevation Source will

allow for automatic updates to the node elevation and spread criteria based on roadway geometry

design changes.

Drainage Nodes


Field Description

Reference Surface TIN File Specify the TIN file to be used as the elevation and spread criteria source of a node.

Elevation Source

User Supplied A manually entered value for an elevation. NOTE: This option does not allow automatic updates with roadway design changes.

Reference TIN Calculates an elevation from a surface stored in a TIN file at the node location.

Reference PGL Applies the elevation to a node of the exact station on a profile grade line (PGL).

Elevation Source PGL + Spread Section

Applies the elevation to a node at the exact station on a PGL, which is then projected along the spread section specified in the Spread Criteria Option.

Node Elevation Option

Same as Source Matches the node elevation to the elevation source.

Constant Offset Applies an offset (±) to the elevation. Useful for PGL or PGL + Spread Section Elevation Source options.

User Supplied An elevation may be manually entered.

Vertical Alignment

Match Soffit Storm sewers will be aligned to the top of the pipe.

Match Invert Storm sewers will be aligned to the bottom of the pipe.

Match Surface Storm sewers are aligned by the water surface in the pipe.

Allow Drop Manhole Storm sewers will not be aligned to each other. Allows for an elevation difference between connecting pipes.

Min. Fixed Drop Storm sewers will not be aligned to each other. Sets a minimum elevation difference between connecting pipes.

Match Centerline Storm sewers are aligned by the centerline of the pipe.

Minimum Depth Specifies the minimum cover measured from the node elevation to the soffit of the highest pipe that is connected.

Maximum Depth Specifies the maximum of a node measured from the node elevation to the invert of the lowest pipe that is connected.

Add Sump Depth Additional depth to be added to a node below the computed depth of a drainage structure.

Drainage Nodes


4.2.5 Junction Loss

The Junction Loss Option allows for a variety of methods to compute junction losses within a node.

For MDOT projects, junction losses will be defined for each individual node through an Absolute

Loss. This sets a fixed head loss to nodes using values of 0.1 for 180° storm sewer orientations

between an inlet and outlet pipe and 0.2 for any bends in storm sewer orientation or multiple inlet

pipes at a node. Exit losses will be computed per the MDOT Drainage Manual. These options will

override the settings in the preferences if the “Disable All Junction Loss Computations” toggle is not

turned on in the Project Preferences.

4.2.6 Discharge Options

The Discharge Options allow the discharge to be computed from different sources.

Drainage Nodes


Field Description

Use Computed Discharge Specifies the discharge from the corresponding Drainage Area should be used.

Supplied Discharge A manually entered discharge value, which will override discharge computations from a Drainage Area.

Disable Inlet Calculations Capacity A manually entered value may be entered instead of using the calculated value.

Link Base Flow Area Additional drainage area can be specified to be accounted for. NOTE: The area is included with respect to the pipe, but not the spread calculations.

Link Base Flow Discharge Additional discharge can be specified with this option. NOTE: This discharge is included with respect to the pipe, but not the spread calculations.

4.2.7 Computations

The Computations Option is used to list all of the node computations. After all input has been

specified for a node, clicking this Option will display the spread calculation results. Warning or error

messages will appear if there is insufficient input data.

Drainage Nodes


Exercise 4.1 – Create Nodes

1. Zoom in around station 30+00 along 9 Mile Rd. (running south to north).

2. Catch basins need to be added at the north end of the existing bridge to collect runoff from the

south. Add a node from the Drainage menu bar: Component > Node > Add

Label the first node “1” and click OK.

3. Under the Properties Option define the node as follows:

Node Type: Curb and Grate

Profile: On Grade

Library Item: 48” CB-C

Click Apply

Drainage Nodes


4. Under the Location Option place the node with the following settings:

Chain: 9MILE_D

Profile: NINEMILE_D

Align: Tangent to Element

Click the Select MS Alignment Element button and select

the EOP.

+ Angle: 270.00 (set angle to properly fit node to roadway design)

Station: 30+30.00

Offset: -14.00

Click Apply

Drainage Nodes


5. Under the Spread Criteria Option define the spread section in front of the catch basin in the

following way:

Longitudinal Source: Reference PGL

Spread Source: Reference TIN

Max Pond Depth: 0.16 ft

Max Pond Width: 4.33 ft

NOTE: The correct TIN File must be selected in the Elevations Option for correct spread section

values to populate in the Spread Cross Section list box. Review populated entries and make

necessary revisions by setting the Spread Source to User Supplied to ensure accurate data input

at the node location.

NOTE: When utilizing the Reference PGL option for the Longitudinal Slope Source, the

longitudinal slope may not be the same at the node location as it is at the PGL in a super-

elevated roadway section.

After the Spread Section entry is loaded in the list box from the Reference TIN, select User

Supplied from the Spread Source drop-down menu and add the following spread section to

account for the Type D gutter:

Width: 1.33

% Slope: 7.81

Roughness: 0.016

Drainage Nodes


6. Under the Elevations Option define the drainage structure’s vertical elevation and storm sewer

alignment:

Reference Surface: TIN File

NOTE: Make sure the correct TIN file is loaded in the

box to the right from the project preferences.

Elevation Source: Reference TIN

Node Elevation Option: Same as Source

Vertical Alignment: Allow Drop Manhole

Minimum Depth: 4.00 ft (will vary depending on drainage structure type)

Maximum Depth: 12.30 ft (may be increased if needed)

Add Sump Depth: 2.00

7. Under the Junction Loss Option click the Absolute Loss toggle and add the correct value for the

pipe orientation: 0.1 in this case (0.2 for bends or multiple inlet pipes).

8. Under Discharge Options make sure Use Computed Discharge is the selected option.

9. Click Apply

10. Repeat the previous steps to create the rest of the nodes in the project from the data listed

below:

Node ID’s 2 and 4

Offset: 14.00


Node ID 3

Offset: -14.00


Drainage Nodes


Node ID 5

Offset: -15.52


Node ID 6

Offset: 15.52


Node ID 7

Node ID: 7

Node Type: Junction

Library Item: 48” MH-B

Offset: 65.00’ RT

Minimum Depth: 2.20 (flat slab top required)

Maximum Depth: 14.30 (no sump depth)

Outlet Node

Node ID: 8

Node Type: Outlet

Library Item: 15” CONC ES (educated guess prior to initial Network design)

Fix Tailwater at: Soffit

Station: 34+82.00

Offset: 68.00’ RT

Elevation Source: User Supplied – 618.25’ (use soffit of end section as a reference)

Minimum Depth: 0.00 (end section)

Junction Loss: Defined Equations (outlet node)

Drainage Nodes


Drainage Nodes


Structure No. Inlet (Node)

Type Profile

Bypass Structure No.

6 48” CB-C On Grade


3 48” CB-C On Grade 5




Drainage Nodes


11. Save the project from the Drainage menu bar: Project > Save

Drainage Areas


5 DRAINAGE AREAS

5.1 Introduction

Drainage Areas are used to compute peak flows or attach computed discharge values to nodes within a

project. Drainage Areas may be created by being automatically delineated through DTM Drainage Tools

by referencing a TIN file, drawn using basic MicroStation tools or values may be manually entered in the

Drainage Area Definition dialog. For assistance with delineating drainage areas, contact the MDOT

Hydraulic Unit Supervisor. The Drainage Area tools can be accessed in three ways:

MicroStation pull-down menu: Drainage > Component > Area

Drainage menu bar: Component > Area

Drainage Tool Box:

Drainage Areas


5.2 Drainage Area Dialog

The Drainage Area dialog contains the parameters needed to define a Drainage Area. This dialog can be

invoked by selecting Add Area or Edit Area. There are three Options: Definition, Subareas, and

Computation.

The Area ID at the top of the dialog confirms which area the dialog is referring to. There are also tools

to toggle which can Window Center or Highlight the active Area ID in the current View. The button tools

from left to right are ID Area, Add Area, Delete Area and Rename Area. By clicking Apply, data entered

into the fields contained within each of the different Options will be stored for the active Area ID.

5.2.1 Definition

The Definition Option consists of six fields.

Field Description

Description Used to further describe a Drainage Area (optional).

Hydro Method Rational and SCS Methods are supported by Geopak Drainage. However, only the Rational Method is approved for use on MDOT projects.

Drainage Area Selection of a MicroStation shape for the Drainage Area will populate this field automatically or it can be manually entered.

Base C Value

This applies to the entire drainage area unless subareas are delineated and have individual C values. “Remaining” subareas will use the Base C Value.

Time of Concentration Defined in minutes, the minimum TC entered in the Intensity Option within the Project Preferences will override the value in this field if it is smaller.

Compute TC Opens the Time of Concentration dialog box. This calculator distinguishes between Sheet, Shallow and

Drainage Areas


Concentrated flow. The path can be defined through a Trace of the DTM, ID of an element or through ID – Segments which will identify the limits of the three specific types of flow. More specific flow segments can be added by clicking the right

button at the bottom of this dialog . Refer to the GEOPAK Drainage Help Command Reference for more information.

Area Selection / Creation

Select Shape Select previously drawn shapes in MicroStation.

Pick Boundary Elements / DP Create Shape

Sets the boundary elements that will enclose a drainage area. Once the area is defined by a boundary click on the DP Create Shape button and Data Point within the area to accept it.

Create DTM Shape

Creates shapes using the Delineate Watershed DTM Drainage Tool. This tool can also be accessed from the Drainage menu bar click: Utilities > DTM Drainage Tools

5.2.2 Subareas

The Subareas Option defines subareas within a single Drainage Area. These areas will have a

different land use or runoff coefficient (C value) from the Base C Value. For example, this will be

useful when determining impervious and pervious areas. The entries can be set manually or by

using the Automatic Delineation button. If done automatically, land use boundaries need to be

set on the symbology defined in the Drainage Library. The Land Use Boundary Tools provide an

easy way to create these boundaries. The subareas will be drawn in the active MicroStation file

if the Display Only toggle is not turned on.

Drainage Areas


5.2.3 Computation

The Computation Option uses the Composite C Value and the rainfall intensity associated with

the specified time of concentration to compute the discharge for the Drainage Area. This

Option does not account for the absolute intensity which can be set in the Project Preferences.

5.3 DTM Drainage Tools

A Digital Terrain Model (DTM) represents the topography or existing ground of a project through

triangulation. This model is often contained in a TIN file, in which the DTM Drainage Tools reference to

analyze drainage patterns. These tools can be found in various ways:

MicroStation pull-down menu: Drainage > Utilities > DTM Drainage Tools

Drainage menu bar: Utilities > DTM Drainage Tools

Drainage Tool Box:

Drainage Areas


Road DTM Tools:

By invoking one of these commands the following dialog box will appear:

Field Description

Delineate All Watersheds

Displays watershed boundaries within an entire DTM.

Minimum Low Point Depth

The minimum depth at which runoff can travel to. Accounts for small depressions in the TIN file that may be interpreted as a false low point.

Refine Watershed Allows for more accurate flow boundaries to be defined within triangles.

Delineate Watershed Displays watershed boundaries at a specific location in a DTM.

Drainage Patterns Evaluates flow paths of a DTM through a downstream trace from each triangle.

Downstream Trace Displays a downstream flow path from any given point in a DTM.

Upstream Trace Displays an upstream flow path from any given point in a DTM.

Flow Arrows Displays the direction of flow within a DTM.

Drainage Areas


Delineate Low Points Locates all Low Points and displays text as “LP”.

Delineate High Points Locates all the High Points and displays text as “HP”.

Ridge lines Triangles in which one edge flows away from each side.

Sump Lines Triangles in which one edge receives flow from either side.

Surface Ponds Displays areas of ponded water.

Pond Analysis Delineates any ponds within a DTM that can be queried for area, volume, elevation and depth.

Drainage Areas


Exercise 5.1 – Create Areas

MicroStation shapes have been drawn in the file 118329drain.dgn to be used as drainage areas to

expedite training time. Land Use boundaries have also been delineated to quickly feature subarea

computations. When designing a project, users will have to delineate these areas by reading roadway

geometry, contours and/or maps. The DTM Drainage Tools can assist in these efforts.

1. Make sure level Drain_Gpk_Area is turned on.

2. Add an area from the Drainage menu bar: Component > Area > Add

Label the first area 1 and click OK. NOTE: It’s good practice to label Drainage Areas in the same

fashion as its corresponding node to avoid confusion.

3. The Drainage Area Definition dialog will then appear. Enter the following definition data:

Base C Value: 0.9 (Pavement)

Time of Conc.: 15.0 minutes (minimum)

Drainage Areas


4. Click the Select Shape button. Select the MicroStation shape draining to Node ID 1 (bridge area

to the south) and accept. Notice how the Drainage Area value (in acres) populates in the

respective field.

5. Under the Subareas Option, no entries will be needed since this area consists of only pavement.

NOTE: If different land uses existed within one area, subareas could be automatically generated

by clicking the Automatic Delineation button to the right based on previously defined Land Use

boundaries.

Drainage Areas


6. Under the Computation Option click Compute Discharge. Notice the Computed Discharge at

the bottom of the dialog.

Click Apply

Save the project from the Drainage menu bar: Project > Save

7. Repeat the previous steps and use the data below to create drainage areas around the rest of

the nodes created in the last chapter as defined below:

Drainage Areas



Structure No.

Drainage Area

Runoff Coefficient

Time of Concentration

6 0.093 0.90 15.00

5 0.108 0.90 15.00

3 0.019 0.90 15.00

4 0.019 0.90 15.00

2 0.050 0.90 15.00

NOTE: These areas do not have subareas.

Drainage Links


6 DRAINAGE LINKS

6.1 Introduction

Drainage Links are linear features connecting two nodes from upstream to downstream consisting of

conduits or ditches. The Drainage Links tools can be accessed by carrying out one of the following

commands:

MicroStation pull-down menu: Drainage > Component > Link

From the Drainage menu bar: Component > Link


Drainage Links


6.2 Link Configuration Dialog

The Links Configuration Dialog is used to set the parameters of a conveyance facility to make a

connection between two Nodes. Four Options are included in this dialog to fully define a link.

The Link ID at the top identifies the active Link ID the dialog is referring to. It is good practice to name

Drainage Links in some fashion according to the upstream node name. This helps to simplify the

Network and provides easy identification of link locations. There are also tools to toggle which can

Window Center or Highlight the active Link ID in the current View. The button tools from left to right

are ID Link, Add Link, Delete Link and Rename Link. By clicking Apply, data entered into the fields

contained within each of the different options will be stored for the active Link ID.

6.2.1 Definition

The Definition Option defines the standard properties of either a Pipe or a Ditch. If the Pipe

Type is selected the Definition dialog will look as follows:

Drainage Links


If the Ditch Type is selected the Definition dialog will look as follows:

Field Description

Description (optional) Further describes a link .

From Node The first node for which a link originates. Flow direction does not need to be established since this will be determined by connectivity. If an downstream node is defined as a From Node, GEOPAK Drainage will switch the From/To Nodes based on flow direction.

To Node The second node from which a link originates

ID Identifies the From and To Nodes

Length Once a link has From and To Nodes set, a length will populate here based on the distance between nodes. Lengths will be based on the hydraulic center of a node.

Use MS Element Defines links using MicroStation lines.

Type: Pipe or Ditch Determines if pipes or ditches are being used as links

Configuration if the Pipe Type is selected:

Shape Defines the pipe shape.

Material Defines the pipe material.

Design Size Defines the size of a pipe. If toggled on, the pipe size will be determined from hydraulic computations and constraints once the network is designed. If toggled off, a pipe size can be manually entered from the Drainage Library (DLB) by clicking Select…

Design Barrels Defines the number of pipes to be designed for. By default, one barrel is designed for.

Manning’s n The roughness coefficient of a pipe. By default, the n-value is the stored value in the DLB for the specific pipe material selected.

Override Library Payitem

Overrides the pay item link between the DLB and the D&C Manager allowing the user to specify a desired, link-specific pay item.

Drainage Links


Configuration if the Ditch Type is selected:

Ditch Type Fixed shape or cross-section based can be used.

Ditch Width Width of the ditch bottom.

Ditch Depth Depth of the ditch.

Side Slope Ratio Left Left Side Slope of the ditch.

Side Slope Ratio Right Right Side Slope of the ditch.

Manning’s Roughness The n-value coefficient of the ditch lining.

Number of Cross Sections

If ditch type is cross-section based, this specifies the number of sections to create along a ditch link.

Width of Cross Sections

Width of the cross-sections along a ditch link.

NOTE: Ditch type links require a pipe size to be selected in order for a network to carry out hydraulic computations.

NOTE: Ditch links are only to be used for necessary ditch capacity computations separate from

closed storm sewer system computations.

6.2.2 Conditions

The Conditions Option is used to set or review data for the minimum cover, soffit, invert,

maximum depth and slope of a Drainage Link. Min Cover is measured from the Node Elevation

to maximum soffit of a pipe. Max Depth is measured from the Node Elevation to the minimum

invert of a pipe.

The Soffit, Invert and Slope will be calculated once the network is designed. After this, the user

has the option to lock and change these values by toggling on the desired boxes. By doing this,

GEOPAK Drainage will NOT adjust these values next time the network is designed.

NOTE: Only two boxes in a row can be selected at a time with no more than one box per

column.

Drainage Links


6.2.3 Constraints

The Constraints Option uses the values set for Minimum and Maximum Rise and Slope for

proper configuration of Drainage Links. If link parameters are set in such a way to where the

calculated velocity falls outside of the specified range a warning message will appear upon

hydraulic computation.

NOTE: Special care should be used when storm sewers are found to be either in supercritical or

pressure flow. Refer to Chapter 7 in the MDOT Drainage Manual or contact the MDOT

Hydraulics Unit Supervisor for assistance.

6.2.4 Computation

The Computation Option displays the calculated hydraulic results within a Drainage Link. These

hydraulics are not made available until the network which the link resides in is successfully

designed or analyzed.

Drainage Links


Exercise 6.1 – Create Links

1. Add a link from the Drainage menu bar: Component > Link > Add

2. Name the first link “1” to correspond with the upstream Node 1 and click OK. NOTE: It’s good

practice to label Links the same as its corresponding upstream node for quick identification.

The Link Configuration dialog will then appear…

3. Under the Definition Option set the From and To Nodes graphically by clicking the From/To

Node ID buttons . Click the From Node ID button and click on the Node 1 cell. Repeat for the

To Node, but instead click the downstream Node 3 cell.

Drainage Links


4. Set the following parameters for the Configuration of the Link:

Shape: Circular

Material: Concrete

Design Size: Toggle ON (allows pipe sizing to be calculated by

GEOPAK Drainage)

5. Under the Conditions Option no input is needed. Make sure all toggles are OFF to allow the

software to calculate elevations of the link based on node elevations and minimum/maximum

depth constraints.

Drainage Links


6. Under the Constraints Option set the minimum and maximum design criteria for the link.

Rise Min/Max: 1.0/12.0 (feet)

Slope Min/Max: 0.06/2.00 (%)

Velocity Min/Max: 3.00/12.00 (fps)

NOTE: Designed pipes must meet the minimum slopes for self-cleaning velocities, as defined by

Table 7-6 in the MDOT Drainage Manual.

7. Computations will not be available until a network has been created. Once a network is

designed or analyzed, hydraulic calculations will become available in this option.

8. Click Apply to save the link to the project.

Drainage Links


9. Repeat the previous steps to create the rest of the links in the project, which are listed below:

Link ID From Node To Node

2 2 To 4

3 3 To 5

4 4 To 3

5 5 To 6

6 6 To 7

7 7 To 8 NOTE: Most dialog values from the previously created link will be automatically populated in their respective fields for

a new link.

Link ID 7

To Node Invert: 617.00


Drainage Networks


7 DRAINAGE NETWORKS

7.1 Introduction

Drainage Networks consist of interconnected nodes, links and areas needed to create a complete

drainage conveyance system. Ultimately, there is one outlet per network; however multiple networks

can be created in a single drainage project. After a successful system is built, a network can be designed

or analyzed to complete computations. Hydraulic computations for nodes or areas can be computed

independently, but links are dependent upon connectivity which requires a network to perform

computations for these features. Drainage Network tools can be found in several places:

MicroStation pull-down menu: Drainage > Network

From the Drainage menu bar: Network


7.2 Network Configuration Dialog

The Network Configuration Dialog is used to build and compute hydraulic computations of drainage

conveyance systems.

Drainage Networks


The Network ID at the top identifies the Active Network the dialog is referring to. The button tools from

left to right are Add Network, Delete Network, Rename Network and Set Active Network. By clicking

Apply, settings in this dialog will be applied to the entire network.

Field Description

Description (optional) Further describes a network

Validation – Build Network

Builds a drainage conveyance system starting with the Outlet Node. This function validates topology and connectivity within a system to determine if it is ready to be designed or analyzed. Flow direction through all links at this point is established.

Validation – Highlight Network Accents all nodes, areas and links within the Active Network to give users a visual graphic of what is included in the network.

Computations – Design Network Executes the hydraulic design of all elements that comprise the Active Network by setting values to any options that were to be designed for.

Computations – Analyze Network Executes the hydraulic analysis of all elements that comprise the Active Network by maintaining current settings without considering design toggles.

Lock/Unlock Sizes Locks or Unlocks pipe sizes before computations are executed.

Lock/Unlock Elevations Locks or Unlocks invert elevations before computations are executed.

Drainage Networks


Exercise 7.1 – Create a Network

1. Add a network from the Drainage menu bar: Network > Add

Network ID: 9 Mile

Outlet Node: 8

2. Click OK

3. Under Validation click Build Network. This tool confirms topology of nodes and the

connectivity of links. Click Highlight Network to accent all components associated with the

Active Network.

Drainage Networks


4. Click Apply to save the network to the project.

5. Under Computations click Design Network. This will design the network and show any warning

messages (if any) in a Text Editor dialog and an ASCII file called drgmsg.txt in the current

working directory.

6. Modify node and link properties from the designed values to those listed below. These changes

will include elevations, inverts and pipe sizes. Toggle off the “Design Size” options and toggle

on invert elevation boxes to enter the values below. Click Apply after modifying each

component dialog:

Drainage Networks


Drainage Networks


7. In the Network Configuration dialog, under Computations click Analyze. This will re-compute

the hydraulics of the system by using the values defined in each dialog without redesigning or

modifying them.


Drainage Profiles


8 DRAINAGE PROFILES

8.1 Introduction

Drainage Profiles can be created automatically in GEOPAK Drainage between at least two nodes and one

link. Design graphics such as surfaces, pipes, minimum cover and hydraulic grade lines can be drawn in

these profiles to simplify the design process by providing visualization of drainage system to quickly

identify problem areas to rectify. Drainage Profile tools can be accessed from a variety of different

commands:

MicroStation pull-down menu: Drainage > Component > Profile

From the Drainage menu bar: Component > Profile


Drainage Profiles


8.2 Edit Drainage Profile Dialog

The Edit Drainage Profile Dialog contains the settings to successfully create a Drainage Profile from any

network. This window is displayed when the Add or Edit commands are executed.

The Description field at the top of the dialog is optional and allows the user to further describe a profile.

The View Number indicates the View in which the profile will be drawn. The Center Profile button ( )

centers the profile in the current view. By clicking Apply, data entered into the five tabs of this dialog

will be stored to define a Drainage Profile.

8.2.1 Registration

The Registration tab controls the display of a profile by defining the following parameters:

Field Description

Registration Point

The location at which the profile grid will be placed. This point can be derived from manually entering values for the X and Y coordinates or by utilizing the DP (Data Point) button to dynamically place the profile grid.

Scale Sets the horizontal and vertical scale of the profile.

Node Information

Sets the starting and ending points of the profile. The From Node will be displayed on the left side and the To Node will be on the right. Reset Profile will adjust the profile to the current settings of the dialog after the Project to Chain toggle is unchecked.

Projection The Project to Chain toggle will allow utilization of a previously created profile’s stationing.

Drainage Profiles


Grid Stationing and Elevations

If the Project to Chain toggle is used, the Begin and End Stations as well as the Min and Max Elevations will be populated. If not, the stationing will start at 0+00 and extend the length of the distance between the From and To Nodes. Min and Max Elevations may be manually entered in this case.

Reference Surface A TIN file may be chosen to represent the existing or proposed ground above the network. A constant Vertical Offset may be applied also.

8.2.2 Display

The Display tab determines what information will be displayed in a profile and also sets the

symbology of each feature including labels.

Drainage Profiles


8.2.3 Drainage Information

The Drainage Information tab allows for optional design related information to be visually

displayed. This information can help out with design optimization of a network. To activate, toggle

on desired features with the correct symbology, however this information will only be displayed

once a network is designed or analyzed.

8.2.4 Grid & Labels

Six options exist in this tab to format the Grid & Labels of a profile. They are: Node, Link Label,

Elevations, Grid Boundary, Horizontal Grid and Vertical Grid. Double clicking each of them, toggles

them on or off depending on what is desired to be shown. Each option contains a variety of

different settings to choose from.

Drainage Profiles


8.2.5 Link Profile

The Link Profile tab contains geometric information for each Link ID. A link can be highlighted in

which Min. Cover, Invert and Pipe Size data will appear to modify, if desired. Toggles also exist to

hold inverts and/or the slope. If changes are made, the Modify button ( ) must be clicked to

modify the Link ID and Apply must be clicked to save the changes to the project.

NOTE: Depending on the settings in the Updates option of the Project Preferences, a network may

be changed from this tab.

8.3 Preference File

The settings contained in the Edit Drainage Profile Dialog can be saved to a preference file to be applied

to future profiles. MDOT has created a standard Drainage Profile Preference File to be used as a

template for level symbology. This file can be found at the following location: M:\MDOT_02

Workspace\Projects\MDOT_02\Civil Classic\Drainage\ MDOT_Drain_Pref_Prof.ppf. To create a

preference file for a specific project, simply go to File > Save As… to save a copy to the project directory.

8.4 Automated Profile Builder

The Drainage Automated Profile Builder allows for multiple profiles to be created at once. These

profiles can be any combination of upstream to downstream nodes or vice versa. The Query button ( )

can also be clicked to populate the list box with the each leg of a drainage system starting with the

longest. This feature can be accessed in the following way:

From the MicroStation pull-down: Drainage > Component > Profile > Auto Create

From the Drainage menu bar: Component > Profile > Auto Create

Drainage Profiles



By invoking one of these commands the Drainage Automated Profile Builder will appear:

The Network ID for which the desired profiles will be generated for can be selected at the top. The

buttons on the side of the list box from top to bottom are Query, Reverse Nodes, Add List Item, Modify

List Item, Delete List Item, Move Up List Item or Move Down List Item. Other than Query and Add List

Item, all of these buttons will change a list item in the box when highlighted. At the bottom of the

dialog, different nodes can be selected as the profile limits from the drop-down menus, the direction

can be specified, a previously defined Preference File can be loaded and the scale/origin/vertical stack

offset can be set. Once all settings have been set, users can click Apply to have the profiles created.

Drainage Profiles


8.5 Miscellaneous Utilities

Utilities within a project corridor can be stored in GEOPAK Drainage to check for conflicts with a

drainage system. Several types of utilities can be stored into one group. For instance, all utilities that

exist (gas, water, sanitary sewer, etc.) at an intersection could be added into a group rather than only

water mains along a roadway.

Miscellaneous utilities can be added through Component > Miscellaneous Utilities > Add…

Field Description

Alignment Chain Allows the selection of the desired alignment to analyze utilities.

Element Defines the symbology of a utility line.

Elevation Source

TIN File Allows for the selection of the DTM of a project.

GPK Profile Allows for the selection of a vertical profile stored in the .gpk. Only available if the Alignment > Chain option is selected.

Size Specifies the diameter of a utility based on the master units.

Offset Specifies the vertical distance from the Elevation Source. Negative values indicate below grade while positive is above grade.

Drainage Profiles


Exercise 8.1 – Create a Profile

1. Add a node from the Drainage menu bar: Component > Profile > Add

2. Enter the following information in the dialog:

Profile ID: 9 Mile

From Node: 1

To Node: 8

Click Apply

3. Load the standard MDOT Drainage Profile Preferences from the following directory:

M:\MDOT_02 Workspace\Projects\MDOT_02\Civil Classic\Drainage\

MDOT_Drain_Pref_Prof.ppf by clicking File > Open… This file sets preferences in the Edit

Drainage Profile dialog.

Drainage Profiles


4. Enter the following data under the Registration tab:

Max. Elevation: 650.00

Min. Elevation: 600.00

5. Click DP and choose a point in MicroStation to set the location of the profile.

NOTE: If the Project to Chain toggle is selected the DP button will be ghosted, prompting the

user to identify a roadway alignment profile cell to project onto.

6. Click Apply to draw the profile.

7. Go to File > Save As… to save the profile preferences to the project directory for future use.


Drainage Profiles


Exercise 8.2 – Check for Utility Conflicts

1. Add Miscellaneous Utilities that exist within the area of this drainage system by clicking

Component > Miscellaneous Utilities > Add…

ID: Ex_Utils

Description: Existing Utilities

Click OK

2. Enter the electrical conduit and gas main crossing the drainage system:

Electric

Alignment: Element

Level = Elec_Cable_All_Ex_UG_GS

(all ByLevel symbology)

Elevation Source: TIN File

C:\Temp\MDOT_GEOPAKDrainageTrainingClass\EXRD.tin

Size: 0.25

Offset: -3.0

Gas

Alignment: Element

Level = Util_Fuel_NatGas_Ex_Line_GS

(all ByLevel symbology)

Elevation Source: TIN File

C:\Temp\MDOT_GEOPAKDrainageTrainingClass\EXRD.tin

Size: 0.5

Offset: -4.0

Drainage Profiles


3. Click Apply and Close.

4. Under Component > Profile > Edit List… select the 9 Mile profile to edit. Click OK.

5. In the Edit Drainage Profile dialog, select the Display tab and make sure the Ex_Utils

Miscellaneous Utility group just added has populated under the Misc. Utility Crossings ID. If

not, select it from the drop-down menu.

6. Click Apply to update the profile with existing utility crossings.


EX 6” GAS

EX 3” ELEC

Design Revisions


9 DESIGN REVISIONS

9.1 Edit Area, Node & Link Dialogs

Design revisions will be necessary eventually in the drainage design process. The Edit Area, Node and

Link dialogs will allow users to recall data stored for these specific components so they can be modified

to satisfy design criteria. Any changes made will be represented in a profile view for that system

automatically. These dialogs can be invoked by executing the following commands:

From the Drainage menu bar: Component > Area > Edit Component > Node > Edit Component > Link > Edit

The dialogs will then appear as follows:

Design Revisions


From here, all of the data that was originally input for these three components can be edited as needed.

By clicking Apply, these revisions will be stored and the network can then be redesigned or reanalyzed

to update hydraulic computations.

Design Revisions


Exercise 9.1 – Common Network Modifications

9.1.1 Adding a New Node

1. Add a node from the Drainage menu bar: Component > Node > Add

2. Name the Node ID 5A and click OK.

3. Set the Properties of the node:

Node Type: Curb and Grate

Profile: Sag

Library Item: 48” CB-K

4. Set the Location of the node:

Design Revisions


Reference Chain: 9MILE_D

Reference Profile: NINEMILE_D

Align: Tangent to Element (use the Select MS Alignment

Element to select the back of curb)

Station: 34+00.00

Offset: Toggle on and enter -16.54

NOTE: Cover K’s need to hold the back of curb. The

width of the cover must be subtracted from the offset

value (1.96 ft).

Angle: 270.00

5. Set the Spread Criteria of the node:

% Slope Left: 4.00 (left refers to back stationing)

% Slope Right: 0.50 (right refers to ahead stationing)

% Discharge Left: 50.00

% Discharge Right: 50.00

Spread Source: Reference Surface

Max. Pond Depth: 0.16

Max. Pond Width: 4.33

NOTE: The correct TIN File must be selected in the Elevations Option for correct spread section

values to populate in the Spread Cross Section list box. Review populated entries and make

necessary revisions by setting the Spread Source to User Supplied to ensure accurate data input

at the node location.

Design Revisions


6. Set the Elevations of the node:

Reference Surface: TIN File (Proposed – PRRD.tin)

Elevation Source: Reference TIN

Node Elevation Option: Same as Source

Vertical Alignment: Allow Drop Manhole

Minimum Depth: 4.00

Maximum Depth: 12.30


7. Set the Junction Loss of the node:

Absolute Loss: 0.10

Design Revisions


8. Set the Discharge Options of the node:

9. Click Apply to add the node.

10. Set the By Pass to Node to 5A for Node ID 5 and click Apply.

9.1.2 Modify Link Connections

1. Add a link from the Drainage menu bar: Component > Link > Add…

2. Name the Link ID 5A and click OK.

3. Set the Definition of the link

From Node: 5A (use the ID button )

To Node: 5

Design Size: Toggle on

Design Revisions


4. Set the Conditions for the link:

From Node Invert: Check to make sure toggle is off

To Node Invert: Check to make sure toggle is off

5. Constraints should be automatically populated from previously defined links:

6. Click Apply to add the link.

7. Under Link ID 5A’s Definition Option click the ID button for the To Node.

8. Find Node 6 and data point on the drainage structure cell. Notice how a new link is drawn from

Node 5A to Node 6.

9. Click Apply to save the new link connection. The old link disappears and the length is updated

automatically.

Design Revisions


9.1.3 Redesign a Network

1. Add an area from the Drainage menu bar: Component > Area > Add…

2. Label the Area ID 5A and click OK.

3. Set the Definition of the area

Drainage Area: 0.04

Base C Value: 0.90

Time of Conc.: 15.00

Click Apply

4. Edit a network from the Drainage menu bar: Network > Edit

5. Edit Network ID: 9 Mile

Design Revisions


6. Under Validation click Build Network

Click OK

7. Click Design Network to redesign the network with the new Node 5A included.

Click OK

Under the Link Configuration Conditions dialog for Link ID 5A notice how the inverts for the link

were established. Check these values against minimum depth constraints at each node. Toggle

on the From and To Node Invert boxes and enter 626.90 and 626.00, respectively. Click Apply.

8. Under the Network Configuration dialog Analyze Network ID 9 Mile to compute the hydraulics

of the system including the latest invert changes.


Design Revisions


Exercise 9.2 – Analyze Different Storm Frequencies

Conveyance systems sometimes need to be analyzed based on storm frequencies other than the design

storm. For example, this would be applicable if a system was designed to the 10-year frequency, but a

sag point needed to be checked to make sure the 50-year frequency spread does not encroach into the

travel way.

1. Open Project > Preferences from the Drainage menu bar to change the design frequency of the

project.

2. Go to File > Open and navigate to the Project Preferences file created earlier at:

C:\Temp\MDOT_GEOPAKDrainageTrainingClass\118329_GD_Pref.dpf

3. Under the Frequency Options set the Computation Frequency to 50 Year.

4. Click OK

5. Go to Network > Edit to open the Network Configuration dialog and click Analyze. This will

apply the new storm frequency to the system.

Design Revisions


6. Review the standard Sag Inlet Computation Summary report by going to Reports > Inlets > Sag

Inlets to check to make sure the 50-year frequency Ponded Width values are within the

Maximum Ponded Width constraints set previously. Make any necessary changes to keep the

hydraulic computations within design constraints, if needed.

7. After reviewing the calculations for the 50-year frequency change it back to the 10-year

frequency by going back to Project > Preferences and Analyze the network again.


Drainage Navigator


10 DRAINAGE NAVIGATOR

10.1 Introduction

The Drainage Navigator provides the capability to manage all components of a network including Areas,

Inlets, Nodes, Links, Profiles, Culverts and Routings of a drainage project in one central location. This

tool provides an efficient way to identify, add, edit, delete, rename and query these components.

Within the Drainage Navigator exists a Global Editor, which allows for different variables of each type of

component to be revised within an entire project at once. The Drainage Navigator can be accessed from

the following commands:

MicroStation pull-down menu: Drainage > Utilities > Navigator

From the Drainage menu bar: Utilities > Navigator


The Navigator dialog will then appear:

Drainage Navigator


10.2 Navigator Dialog

The button tools from left to right are: All Networks, Active Network, Area, Inlet, Node, Link, Profile,

Culvert and Routing. Depending on which component button on the right is highlighted, component

ID’s will appear in the window below to be selected. These ID’s will either be from all networks in a

project or just from the Active Network based on which button is selected to the upper left.

Visualization tools are also provided to locate highlighted component ID’s without searching for them.

This can be accomplished through the Window Center and Highlight toggles at the bottom. The Query

toggle can be checked to expand the Navigator dialog below, which introduces Query Options as

described below:

Field Description

Query Type Provides the option of querying for Values or Constraints

Condition Greater than, less than or equal to can be chosen

Variable Each type of variable for certain components can be selected

Value Depending on which component and variable are chosen, a specific number can be input or an attribute can be selected from a drop-down menu

Apply Query Applies the query settings input and populates the window above with only the ID’s meeting the query criteria

Drainage Navigator


10.3 Global Editor Dialog

The Global Editor Dialog can be utilized to make edits to components of entire projects or just the Active

Network. This dialog is an extension of the Drainage Navigator and can be accessed by clicking View >

Global Editor from the Navigator dialog.

To edit variables, first highlight the All Networks or Active Network button to the upper left. Select the

type of component, the specific ID’s and the variable desired to be revised. A New Value/Text field will

appear to the right, in which a value can be manually entered. Once this value is entered either Apply

Edit With Confirm or Apply Edit No Confirm will need to be clicked to apply the revision. The difference

between the two is that Apply Edit With Confirm will alert users of the pending edit and prompt them

to click Yes before any edits are made.

Drainage Navigator


Exercise 10.1 – Querying

1. Access the Drainage Navigator from the Drainage menu bar: Utilities > Navigator

2. Make sure the All Networks button is highlighted.

3. Set the Active Component Type to Link and toggle on the Query option.

4. Next use the Query Options to determine which links have a flow velocity less than 3 fps. The

Component ID’s remaining in window after clicking Apply Query meet the conditions of the

query.

Query Type: Values

Condition: <

Variable: Velocity

Value: 3.00

5. Determine the following using the same procedures as previously described.

a. Which links have slopes less than the minimum required?

b. Which links have lengths greater than 300 ft?

Drainage Navigator


Exercise 10.2 – Batch Editing

1. Access the Drainage Navigator from the Drainage menu bar: Utilities > Navigator

2. Make sure the All Networks button is highlighted.

3. Set the Active Component Type to Inlet and toggle ON the Highlight and Window Center

options.

4. Next select View > Global Editor

5. Select all the Inlet Component ID’s. (Selecting the first ID then holding the shift key and

selecting the last ID highlights them all)

6. In the Variable to Edit window select Inlet – Max Ponded Width

7. Enter a New Value of 5.00

8. Click Apply Edit No Confirm. This will apply all the changes without a confirmation warning.

9. Open the Node Configuration dialog (Component > Node > Edit from the Drainage menu bar)

10. Check under Spread Criteria that the Maximum Pond Width is now 5.00 for all inlets.

Drainage Reports


11 DRAINAGE REPORTS

11.1 Introduction

GEOPAK Drainage has the ability to produce both standard and custom drainage reports as output for

hydraulic computations for each component. Standard reports are simultaneously updated as design

changes are made and after network computations have been performed. This provides an organized

summary of an entire drainage system in order to review how changes affect a network as a whole.

Custom reports can be created through the Report Builder to include specific data of a network needed

for review.

Also, MDOT has developed a Visual Basic Application (VBA) program to output standard MDOT drainage

tabulation sheets. These reports are for storm sewer, inlet spacing and hydraulic grade line

computations which put the data into a standardized deliverable format.

Standard and custom Report tools can be accessed in the following ways:

MicroStation pull-down menu: Drainage > Reports

From the Drainage menu bar: Reports


11.2 Standard Reports

Five standard reports are provided for drainage areas, on grade inlets, sag inlets, link configuration and

link hydraulic computations. These reports can be output to an ASCII file to be reviewed in either

Notepad, Excel or WordPad. Reports for drainage areas and inlets do not require an Active Network to

be selected for reporting, however reports for links do require an Active Network. Once a network has

been redesigned or reanalyzed, computations are immediately updated in these reports:

Drainage Reports


Drainage Reports


11.3 Report Builder

The Report Builder provides the ability to generate custom reports for any of the data contained in a

drainage project. These can include input as well as computed values for each component. Upon setup

of a custom report, the format may be saved for future use. The format will consist of the chosen data

in rows and columns to easily be viewed in Microsoft Excel. The Report Builder can be accessed by

carrying out the following commands:

MicroStation pull-down menu: Drainage > Reports > Builder…

From the Drainage menu bar: Reports > Builder…


By executing one of those commands, the Report Builder dialog will appear:

Drainage Reports


Field Description

Report File Menu

Contains standard file managing functions such as New…, Open…, Save and Save As… The extension for the format of a custom report is .drf. This file can be applied in the future through Reports > Generate.

Component Report Basis

All components (Area, Inlet, Node, Link, etc.) used in a drainage project can be selected in the drop-down menu for reporting purposes. Component Data options depend on this basis.

Include Active Network Only When activated, this toggle controls reporting just the Active Network versus All Networks.

Component Data Depending on the Component Report Basis selection, applicable options will populate in this field.

Available Data Depending on the Component Data selection, applicable variables will populate in this window to be utilized in reports.

Report Data Lists Available Data items selected for reporting. The order from top to bottom determines column headings from left to right, respectively.

Include > This button is used to transfer highlighted Available Data items to the Report Data window to be included in a report.

< Exclude This button is used to transfer highlighted items in the Report Data window back to the Available Data window if it should not be included in a report.

Move Up Moves highlighted items in the Report Data window up in order.

Move Down Moves highlighted items in the Report Data window down in order.

Output

Default Output File Name File name for the output report file is manually entered in this field.

Default Output File Extension The extension in which the report file will be saved as. CSV extensions will allow reports to open in Microsoft Excel.

Decimal Places Determines the accuracy of output data.

Delimiter Determines the type of spacer between report data.

Generate Executes the report to be built.

View Opens the text editor to view, edit and print if desired.

Drainage Reports


11.4 MDOT Drainage Tabulation Sheets

The VBA program to output MDOT Drainage Tabulation Sheets was developed by MDOT to make

reporting from GEOPAK Drainage consistent across all deliverables. These Tabulation Sheets are the

official drainage reports for drainage design on MDOT projects. The VBA can be accessed from outside

GEOPAK Drainage in the following way:

MicroStation pull-down menu: MDOT Tools > Drainage > Tabulation Sheets

By executing this command, the Drainage Tabulations dialog will appear:

The first step is to load a GEOPAK Drainage Database File (.gdf) for a project by clicking the spyglass icon

( ) and searching for the file in the project directory. Once this file is opened, most of the fields will

no longer be ghosted. Complete the empty fields, which will be represented in the title block of each

drainage report. Please note Rainfall Zone, Report Network and the Prepared By Date fields will be

automatically populated. The VBA reports the Active Network, so if additional networks need to be run,

these should be selected as the Active Network prior to accessing the VBA. Once all fields are

Drainage Reports


completed, drainage reports can be generated by clicking on one of three Tabulation buttons at the

bottom. These buttons correspond to the three drainage reports that are required for storm sewer

design: Inlet Spacing, HGL and Storm Sewer Tabulation Sheets. A Microsoft Excel file (.xls) with a

standard reporting format containing hydraulic computations for the Active Network can then be saved

in the project directory.

Tip: Reference .csv files are generated for each report where the actual report files (.xls) are saved. If

the report files become corrupted, try deleting all drainage .csv files and recreating the Tabulation

Sheets.

The following are examples of the format of each Drainage Tabulation Sheet:

Drainage Reports


Exercise 11.1 – Customized Reports

1. Go to Reports > Builder… to open the Report Builder dialog.

2. Set the Component Report Basis to Area.

3. Set the Component Data to Area. 4. Select variables Area – ID, Area – Discharge, Area – Intensity, Area – Composite C Value and

Area – Composite Area under Available Data and click Include> to add the variables to the Report Data.

5. Enter csv in the Default Output Extension field. 6. Type in Area as the Default Output File Name. 7. Set the Decimal Places to 2. 8. Toggle on Include Field Names. 9. Click Generate. NOTE: By clicking View, an on-screen display of the report can be reviewed. 10. Open the report with Microsoft Excel to review the data. 11. Repeat the previous steps to create custom reports for the following components:

Inlet - Switch the Component Report Basis and Component Data to Inlet. Select Inlet – ID, Inlet – Discharge and Inlet – By Pass Flow under Available Data and click Include>. Link - Switch the Component Report Basis and Component Data to Link. Select Link – ID, Link – Discharge, Link – HGL Downstream and Link – Actual Velocity Downstream under Available Data and click Include>.

12. Go to Report File > Save As… to save the report settings for future use.

Drainage Reports


Exercise 11.2 – Creating MDOT Drainage Tabulation Sheets

1. Set the network “9 Mile” as the Active Network.

2. Click Network > Edit > Analyze to update hydraulic computations throughout the system to

ensure the latest design will be reported.

3. Go to MDOT Tools > Drainage > Tabulation Sheets to open the Drainage Tabulation Sheets VBA

dialog from the MicroStation pull-down menu.

4. Click the spyglass icon ( ) to search for the drainage project file:

C:\Temp\MDOT_GEOPAKDrainageTrainingClass\118329.gdf

Click Open.

Drainage Reports


5. Fill out the project information for each field and click the Save Settings As… button ( ) to

save these settings to the project directory for future reporting.

6. Click a button at the bottom for the desired report to be generated.

Drainage Reports


7. Type a report name in the File name: field and click Save to save the report to the project

directory.

8. Click OK in the pop-up dialog.

9. Open the report in Microsoft Excel to review the results.

NOTE: The Inlet Spacing Tabulation Sheet requires manual data entry for the Allowable Spread

field and the Gutter Width column since these values are project specific. Also, remarks about

special details pertaining to certain components of the network can be entered under the

Remarks column.

Drainage Reports


Plan Preparation


12 PLANS PREPARATION

12.1 Introduction

During the drainage design process, renumbering nodes will be required as they are added or deleted in

a project. GEOPAK Drainage provides an automated tool to search for and renumber nodes as needed.

Utilizing this tool will not only renumber nodes, but also any drainage areas or profiles they are

associated with. A conflict naming feature is also incorporated to eliminate duplicate node names.

The Drainage Labeler tool exists to place labels in the plan view of a drawing to increase efficiency of

labeling repetitive features such as: drainage areas, inlets, nodes and links. This tool is very similar to

the GEOPAK Road Plan View Labeler except that GEOPAK Drainage components are populated instead

of coordinate geometry elements. Users can label computed data from a drainage project and/or user

defined text.

12.2 Renumber Nodes

The Renumber Nodes tool can be accessed in the following ways:

From the MicroStation pull-down menu: Drainage > Component > Node > Renumber

From the Drainage menu bar: Component > Node > Renumber

Plan Preparation


Field Description

Alignment Nodes will be scanned along a specified chain, station range and offset distance to be detected for renumbering.

Numbering Renumbers nodes inside the scan range to a Prefix, Number and/or Suffix as defined.

Nodes inside the scan range

Populates with nodes detected during the scanning process.

Node Name Conflicts outside the scan range

Displays conflicting node names outside the scan range for new node numbers. Conflicts can be resolved by renaming these nodes and moving to the Scan Range list box for further renumbering.

To renumber nodes, the following steps must be taken:

1. Load the .gpk file in the Job Number field if it hasn’t already been populated from the Project

Manager.

2. Specify the Start and End stations by either inputting specific values or dynamically by clicking

along the project corridor.

3. Specify the left and right search distances (in feet).

4. Click Find to scan the defined range.

5. Enter the desired Prefix, Number and/or Suffix for the new numbering sequence.

6. Resolve any conflicts by renaming Conflict ID’s, if applicable.

7. Check to make sure a node’s Current ID listed will be renumbered with the correct Renumber ID

inside the scan range. If not, revise the Numbering values in the upper right corner or delete

nodes that will be out of sequence.

8. Click Renumber Nodes to complete the process.

Plan Preparation


12.3 Drainage Labeler

NOTE: Text placed with the Drainage Labeler is not annotative. Users should consider the possibility of

construction plan scale changes before using the Labeler tool to place drainage labels.

The Drainage Labeler can be accessed in one of two ways:

From the MicroStation pull-down menu: Drainage > Utilities > Labeler

From the Drainage menu bar: Utilities > Labeler

Tab Description

Text Can be placed with Computed Text or user defined text.

Params. Sets text preferences/symbology.

Shape Sets the shape preferences (if any) of a shape around a text label.

Leader Defines the type of leader and terminator for a given label.

Rotate Defines the angle of text in a variety of ways.

Styles Select a predefined set of parameters for a label or save a New Style to be used in the future.

Once label settings have been established, Computed Text can be entered into the Label Edit Field to

the right of the dialog. To do this, an Element ID can be chosen to be labeled, which change with the

selected type of drainage component. Once an Element ID is chosen, the desired Computed Text

property can be double clicked to automatically populate the Label Edit Field. User defined text can also

be input into this field as well by simply typing the desired text, but using the commands below to insert

symbols, spaces, multiple lines (return) and delimiters. There is also a “Clear” button to erase previously

specified labels. To place a label, click “Place Label” and data point in MicroStation. Multiple data

points may be necessary based on the leader type selected.

Plan Preparation


Exercise 12.1 – Renumbering

NOTE: It is recommended to make a copy of the MicroStation and drainage project (.gdf) files prior to

renumbering in case the original numbering is needed later.

1. From the Drainage menu bar select the Renumber tool by going to: Component > Node >

Renumber

2. Complete the dialog as shown below and click Find.

3. Click Renumber Nodes. GEOPAK Drainage will renumber all nodes and drainage areas as well as

update link connections, calculations and profiles based on the settings in the Updates option of

the Project Preferences. NOTE: Link ID’s will not be renumbered to match the upstream Node

ID. Only the From/To Node ID’s will be changed within the Link Configuration dialog.

4. Close the dialog when finished.


Plan Preparation


Exercise 12.2 – Plan View Labeling

NOTE: Standard MDOT Drainage Label Styles have been developed for plan view drainage labels for

standard construction plan scales, which can be loaded under the Styles tab in the Drainage Labeler

by going to Style Files > Open... and opening the following file M:\MDOT_02

Workspace\Projects\MDOT_02\Civil Classic\Labeler Style Files\MDOT_Drainage.lsf. The following

exercises will step through the process of creating a custom label style, if needed.

12.2.1 Labeling Drainage Structures

1. From the Drainage menu bar open the Drainage Labeler tool: Utilities > Labeler

2. Select the Text tab and set it to the node component.

3. Select the first Element ID: 1

4. Double click the Node – ID in the Computed Text window to add it to the Label Edit Field.

Plan Preparation


5. Next select the Params. Tab and double-click on the Text Preferences/Symbology - ‘Sample’

box to set the text features. Set them as shown below:

Plan Preparation


6. To set the Shape Preferences select the Shape tab. Set this tab as shown below:

7. Select the Leader tab to define the type of leader and terminator. Define as shown below:

Plan Preparation


8. Select the Rotate tab to define the current angle of the text. Set as shown below:

9. Click on Place Label and data point in MicroStation to place the label and leader.

10. To create a new style, place a label and click on the Styles tab then New Style… Name it, define

the scale and click OK.

11. To save a style select Style Files > Save As… to save the .lsf file to the project directory.

12. Go back and re-select the Text tab and select the second structure: 2. Then Toggle On the

Hightlight and Window Center so the Drainage Labeler will zoom to the selected structure

location in the MicroStation file.

13. Repeat steps defined above to label the rest of the drainage structures.

14. Save the MicroStation file: File > Save

Plan Preparation


12.2.2 Labeling Pipes

1. When all drainage structures have been labeled click the Clear button to clear the Label Edit

Field.

2. Select the Text tab and set the component to Links

3. Select the first Element ID: 1

4. In the Computed Text box double-click: Link – Library Item.

Plan Preparation


5. Next select the Params. tab. Double-click on the Text Preferences/Symbology: ‘Sample’ box to

set the text features. Set them as shown below:

Plan Preparation


6. To set the Shape Preferences select the Shape tab. Set this tab as shown below:

7. Select the Leader tab to define the type of leader and terminator. Define as shown below:

Plan Preparation


8. Select the Rotate tab to define the angle of text to be the Element Angle as shown below:

9. Click on Place Label to choose the label location in the MicroStation file.

10. Go back and re-select the Text tab and select Element ID 2. The current view should zoom to

the selected pipe since Highlight and Window Center are toggled on.

11. Repeat steps defined above to label the rest of the drainage pipes and Close the Drainage

Labeler when finished.

12. Save the MicroStation file: File > Save

Automated Quantities


13 AUTOMATED QUANTITIES

Pending…

Warning Messages


14 WARNING MESSAGES

Below are common warning messages users may run across when utilizing GEOPAK Drainage along with possible explanations as to why they were invoked: 14.1 Preferences

Message Explanation

Error Opening GPK file The directory path of the project’s geometric database (.gpk file) is not properly defined in the Project Preferences.

Error Opening Drainage Library The directory path of the project’s drainage library (.dlb file) is not properly defined in the Project Preferences.

Close All Open Library Item Dialogs Before Exiting Librarian

All edit dialogs must be saved or closed before exiting the drainage library dialog.

Unable to load path data The directory path of one or more of the project components are invalid or do not exist in the Project Preferences.

14.2 Areas

Message Explanation

No element meets the boundary level/symbology criteria

The MicroStation file element symbology, specified as search criteria for the area definition, does not match any of the elements in the MicroStation file.

Area Creation Failed or Aborted - Area Must be Enclosed

A drainage area must be an enclosed shape.

No Boundary Elements Selected Borderline MicroStation elements to enclose a drainage area were not selected.

Sum of Subareas = ## Exceeds Total Drainage Area = ## Do You wish to Reset Total

The sum of the subareas entered in the Area > Subareas option exceeds the total area defined in the Area > Definition dialog. GEOPAK Drainage will adjust the total area to be the total sum of the subareas.

14.3 Nodes

Message Explanation

Error Retrieving Cell

The cell library containing the drainage node cells is not attached to the .dgn file.

NO element identified

User has not selected a MicroStation element for which a node would use as a reference for placement while using the Tangent to Element or Tangent on Element methods in the Location option of the Node configuration dialog.

Warning Messages


Unable to determine PGL Elevation

The station where the node is placed does not exist along the referenced profile.

Unable to compute TIN Elevation The node is placed outside the limits of the TIN file specified or the TIN file does not exist.

Error Finding D&C Manager

The D&C Manager database (.ddb file) is not found at the directory specified in the Project Preferences.

Error Computing Inlets Calculations for Network

GEOPAK Drainage was not able to compute any hydraulics for the specified inlet since there is no defined flow. This could be caused by having a negative slope in the spread criteria definition or by having no drainage area or discharge specified for the node.

Error Opening ACBOOK

The D&C Manager database (.ddb file) is not found at the directory specified in the Project Preferences.

Error Accessing TIN or Model

The TIN file does not exist at the directory specified in the Project Preferences.

Error in Inlet By Pass Designations - Loop Detected

Bypass flow is defined to discharge into the same node.

14.4 Links

Message Explanation

Link placement ERROR

Link was not placed and stored in the drainage database (.gdf file). This could be caused by having the From and To Nodes defined as the same Node ID or a MicroStation element to define the link was not selected.

Cannot Hold the Slope and From and To Node Elevations

Values for both inverts and the slope of a link cannot be held simultaneously. Inverts should be specified, while allowing the slope to be calculated by the software.

Cannot Hold From Node Soffit and Invert Elevations

Values for both soffit and invert elevations cannot be defined for the same FROM node. One of them should be defined, while allowing the software to calculate the remaining elevation based on the pipe diameter.

Cannot Hold To Node Soffit and Invert Elevations

Values for both soffit and invert elevations cannot be defined for the same TO node. One of them should be defined, while allowing the software to calculate the remaining elevation based on the pipe diameter.

Cannot Hold More than Two Conditions Values for both inverts and the slope of a link

Warning Messages


cannot be held simultaneously.

Rise Exceeds Maximum allowed by Profile Envelope

The selected link is encroaching the minimum depths defined by the constraints of the connecting nodes.

Downstream HGL sufficient for Hydraulic Jump GEOPAK Drainage does not calculate the exact location of a hydraulic jump, but instead warns users of the possibility.

Minimum Slope used for Positive Drainage Link slopes were adjusted to the minimum specified slope in order to assure positive flow. Adverse pipe slopes are not allowed.

Min Depth Exceeded at Upstream or Downstream of Link

Link rise is encroaching into the upper profile envelope defined by: Node Elevation - Minimum Depth (to the soffit).

14.5 Networks

Message Explanation

Error Building Network An invalid network has been identified. Multiple outlet nodes or “loops” could cause this.

Network Calculations Containing Profile are not up to date, Please Perform Network Calculations

Shown results may not be the most recent since possible edit operations have occurred in the network.

An Active Network must be selected The Drainage > Network > Active Network command needs to be carried out to choose an Active Network.

Network Computations are not up to date show results anyway?


Network Calculations involving link are not up to date, Please perform Network Computations


Errors Preclude Computations

GEOPAK Drainage was unable to calculate the network. This could be caused by zero values in the node/link definitions or no drainage areas/supplied discharges assigned to nodes, thus producing no flow.

HGL Blowout at upstream end The hydraulic grade line is encroaching the limit defined by: Node Elevation - Minimum Freeboard (defined in the Project Preferences).

Commingling Runoff Methods not supported Both the Rational and SCS method are selected for different drainage area definitions.

Error Building Network - More than One Outlet found

An invalid network has been defined. Multiple outlet nodes are not supported.

Error Building Network - Loop or Multiple Downstream Links

An invalid network has been defined. Loop or closed circuits connections are not supported.

Error Building Network - More than five Incoming Links for Node

GEOPAK Drainage does not allow more than five pipe connections to a node.

Warning Messages


No Size Specified (for a ditch link)

This is due to a bug in the program. Switch the link back to a Pipe Type and specify a pipe size then switch back to a Ditch Type and click Apply.

14.6 Profiles

Message Explanation

Unsuccessfully projecting to chain __ from link __

The chain limits do not extend to the link location.

Error Accessing TIN or Model

The TIN does not exist at the directory path specified in the Project Preferences.

Drainage Profile __ contains Node __

The Drainage Profile dialog must be closed before editing a node that is part of the active profile.

Drainage Profile __ contains Link __

The Drainage Profile dialog must be closed before editing a link that is part of the active profile.

14.7 Navigator

Message Explanation

No Queries Available for Selected Type There are no query options for the drainage element type selected.

No Elements Meeting Query were found No results have been found for a specific query.

14.8 Renumbering Nodes

Message Explanation

Some Nodes get labeled as “Scratch-##”

A wrong renumbering definition has caused nodes to be assigned an ID as “Scratch” nodes. Refer to the backup version of the project and correct the renumbering setup.

14.9 Reports

Message Explanation

No Active Project Load a project through GEOPAK Drainage prior to running the Drainage Tabulation Sheets VBA.

Error Creating Tab Error with an Excel seed file. Call Engineering Support Services for help.

No Nodes/Links found in report

The CSV file that is automatically generated in the project directory for the corresponding report type has been corrupted. Delete all drainage CSV files in the project directory and rerun the report.

GEOPAK Drainage Course Guide

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