Understand the basics behind one-dimensional computational hydraulics in order to set up and apply HEC-RAS.
Many aspects of site development, road construction, or other civil projects ultimately involve the computational modeling of the flow of water. The Hydrologic Engineering Center-River Analysis System (HEC-RAS) is a widely used, accepted, and versatile open-channel hydraulics computational modeling software. It is universally approved by federal, state, and local agencies for a wide range of computational hydraulics applications. The steady one-dimensional approach is often used in applying HEC-RAS. You will learn the basics of steady one-dimensional computational hydraulics, including specifics utilized by the HEC-RAS software. It is essential to understand this basic theory of steady one-dimensional computational hydraulics, in order to successfully set up and apply HEC-RAS, and interpret results. You will also learn how to navigate the HEC-RAS user interface, including how GIS information is accessed. The material will tell how to build an HEC-RAS geometry using digital elevation data, how to specify steady flow discharges, how to assign boundary conditions, how to execute a steady flow simulation and view the results. The ability to successfully apply HEC-RAS to model open-channel hydraulics is a skill that continues to be in demand.
Learning Objectives
- You will be able to review open channel hydraulics.
- You will be able to discuss water surface profiling.
- You will be able to identify user interface.
- You will be able to explain steady flow data file and plan.
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Agenda
Overview and Background
- Open Channel Hydraulics
- Definitions
- One-Dimensional Steady Conservation of Energy
- Uniform vs. Nonuniform Flow
- Sub-Critical vs. Super-Critical Flow
Water Surface Profiling
- Enhancements to Conservation of Energy
- Discharge Flows and Boundary Conditions
- Backwater vs. Forewater Calculations
- Trapezoidal Channel Example
HEC-RAS
- Origins and Development
- User Interface
- GIS Compatibility
RAS Mapper
- Projection File
- Terrain
- Topographic Map
- Aerial Imagery
Building and Executing a Steady Flow HEC-RAS Model
- RASMapper and Geometry File
- Steady Flow Data File and Plan
- Execution and View Results
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OnDemand Course
This course was last revised on September 28, 2023.
Call 1-866-352-9540 for further credit information.
- AIA 1.0
- Lorman Education Services is a registered provider of AIA-approved continuing education under Provider Number J2016. This course is approved for 1.0 Learning Unit hour(s). Prerequisite: None, Program Level: Intermediate: Advanced Preparation: None
All registered AIA CES Providers must comply with the AIA Standards for Continuing Education Programs. Any questions or concerns about this provider or this learning program may be sent to AIA CES ([email protected] or (800) AIA 3837, Option 3). This learning program is registered with AIA CES for continuing professional education. As such, it does not include content that may be deemed or construed to be an approval or endorsement by the AIA of any material of construction or any method or manner of handling, using, distributing, or dealing in any material or product. AIA continuing education credit has been reviewed and approved by AIA CES. Learners must complete the entire learning program to receive continuing education credit. AIA continuing education Learning Units earned upon completion of this course will be reported to AIA CES for AIA members. Certificates of Completion for both AIA members and non-AIA members are available upon request.
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Ondemand Course Length: 1.0
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- WI ENG 1.0
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- WY ENG 1.2
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To earn each credit Lorman offers through the OnDemand learning platform, you need to watch 100% of the program. Also, for certain credits you will need to fulfill additional requirements which will be displayed on the "credits" tab when viewing the course.
- Those applying for AIA and HRCI must view 100% of the program and answer the questions following the program.
This program does NOT qualify, nor meet the National Standard for NASBA accreditation.
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Why Lorman?
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Faculty
Gregory H. Nail, Ph.D., P.E.
University of Tennessee at Martin
- Professor, Engineering Department, The University of Tennessee at Martin, Martin, TN
- Spoken at numerous professional development seminars and webinars, including over 40 such programs on HEC-RAS modeling
- Recently worked a summer faculty internship (2023) at the Savannah River National Laboratory (US Department of Energy)
- Recently published Wappapello Dam, Missouri, Overtopping Event of 2011, Transactions of the Missouri Academy of Science, Volume 46, pp. 69-82, published online October 10, 2018
- Licensed professional engineer (civil and mechanical), state of Alabama (22518); civil engineering exam (April 24, 1998); mechanical engineering exam (October 30, 1998)
- Ph.D. degree, Texas A&M University, 1991 (mechanical engineering; fluid mechanics); M.S. degree, Texas A&M University, 1991 (mechanical engineering; fluid mechanics); B.M.E. degree, Auburn University, 1984
- Can be contacted at [email protected]
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