HEC-RAS 1D Course From Zero to Hero

In this part, you will learn how to create project, define geometric model (cross sections), calculate manning roughness coefficient using Cowan method, define input flow data and boundary conditions for model simulation. Finally, the model outputs are discussed based on graphical and tabular Tools. All modeling processes has been done step by step and after that the students can easily run their case studies.

In this part, you will learn how to download Global and Regional DEM Sources such as SRTM-30m, ALOS-30m, ASTER-30m, GMRT450m, Copernicus Global Digital Elevation Models and USGS 1, 10 and 30m resolution DEMs for your case studies. Then, the required preprocessing steps including projection conversion and extract DEM for study areas are illustrated in GIS.

In this part, you will learn how to Import pre-processed DEM (Terrain Model) into RS Mapper, digit stream center line, banks, flow paths and generate Cross-Sections. Then, the modeling (defining flow data and boundary conditions) and Visualization processes are described step by step.

In this part, you will learn how to visualize the hydraulic variables such as Water Surface Elevation (WSE), Spatial Distribution of Flood Depth, Flow Velocity, Loading Google Earth as a background map, Generating Particle Tracing lines, Generating Hazard Map based on D*V, Inundation boundary in shape file format, Assessing the Tabular outputs for different cross-sections and etc.,

In this part, you will learn the applicability of Remotely Sensed DEMs for Flood Inundation Mapping in Data Sparse Regions, and for Real projects.

In this part, you will learn more about the theoretical concepts of hydraulic modeling around the bridges, and can find all details about the modeling processes in HEC-RAS 1D model.

In this part, you will learn about the required steps for defining bridge in a river reach including: defining Deck/Roadway, Pier, Sloping Abutment, Assessing the Bridge Modeling Approaches (Energy, Momentum, Yarnell and WSPRO methods), Modeling Debris Flows Effect of hydraulic properties. Finally, the outputs of the Model will be discussed based on Graphical and Tabular Tools.

In this part, you will learn about the theoretical concepts of Bridge Scour Formulas and also you will learn about the applicability and drawbacks of each formulas. In addition, the required datasets and parameters for bridge scour simulation using HEC-RAS, will be illustrated step by step.

In this part, you will learn about the required datasets and parameters for Inline structure (including Weir, Sluice Gate) simulation using HEC-RAS step by step.

One of the most important issues in the river protecting projects is the calculation of stable width and slope. Because, performing the river protection measures without considering the stability factor can lead to the erosion or sedimentation through the study reach. It is so important in regions in which the river crossing through a city or village. In this part, you will learn about the required steps for estimation of river stability parameters using HEC-RAS model.

In this part, you will learn about the details of failure mode (overtopping or piping), dam breach parameters (width and time), dam breach formulas, calculation of reservoir normal depth and volume, and other numerical settings will be discussed in this part. After finishing this video, you can easily simulate dam break project for every cases and scenarios.

In this part, you will learn more about the Quasi-Unsteady flow concept, defining Boundary conditions at External cross-sections and setting temperature time-series in HEC-RAS model. 

In this part, you will learn details of sediment transport functions, fall velocity formulas, defining bed gradation curves, defining movable bed limits and sediment control volume. All sediment concepts are described completely in this video.

In this part, you will learn about different sediment boundary condition types including Rating Curve, Sediment Load Series, Equilibrium Load, and defining Sediment Split Approach at Junctions. In Addition, the details of Sediment Properties Options such as User Defined Grain Classes, Set Cohesive Options, Bed Change Options, and Calibrate Transport Functions are described completely. After watching this video you can be aware of all modeling tips for sediment transport using HEC-RAS.

In this part, you will learn about the remain Sediment Properties Options such as Bed Mixing Options, Subsidence, Set Path Through Nodes completely. HEC-RAS includes several settings and model coefficients such as Sediment Computation Options and Tolerances, Transport Energy Slope and Sediment Output Options which affect on the model run time and Volume of outputs. All of this options are illustrated completely in this video.