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#Merge two reaches hec ras how to#

The centerline of the stream is now complete. When all lines are automatically highlighted, click to Accept. Feature Definition: Centerline – Green (if not using the Feature Definition toolbar) Name: CL-Stream (or to the stream name)Ĭlick to the first line just placed, see the highlighted arrow pointing upstream (click closer to the start to move the arrow into the right direction).Still in the Geometry Tab > Horizontal tools > click on the small down arrow for Complex Geometry and select Complex By Element. Next, the individual lines will need to be complexed. Select the Element Selection tool to get totally out of the command completely. Move the cursor upstream to the next location of the stream, doing so until the end of the stream or where cross sections are no longer needed. Note: Open the Feature Definition Toolbar ( Geometry Tab > General Tools > Standards > Feature Definition Toolbar ) activate the Use Active Feature Definition toggle, select the feature definition and toggle on the Chain Commands (this will make it easier to draw the centerline of the stream).Įnter the Start Point: click to the center of the stream (downstream) as the starting point of the stream centerline. (Turn OFF the contours for the terrain to make it easier to find the center of the stream.) In the Line toolbox, select the Feature Definition: Centerline – Green, Name leave: CL Next the user will use the Geometry tools to create the Stream Centerline going from downstream to upstream.Ĭlick on the Geometry tab > Horizontal tools > Lines > Line Between Points. Set the Override Symbology to Yes, this allows you to turn the Major and Minor Contours to On or Off, as well as Triangles, Flow Arrows, Breaklines etc.Ĭreate Stream Centerline for HEC-RAS data If the contours are not shown, click on the Properties icon to activate Properties box. With older surveys you may need to reference in the terrain also. Click on the Attach References tool and reference in the survey file (this should also contain the terrain model) from the Active Survey folder. Select from the Primary Tools > Attach Tools > References. Open the Explorer and Properties boxes and dock to the left or right side of the screen. Set-up the workspace to what you need and customize to your need.

Select the OpenRoads Modeling workflow from the workflow drop-down. The file should be stored: …\Hydro\Base_Models\ f older.įile Name should read: HD_CB_1234-1234_HEC-RAS_MDL.dgn Data Category (CB for Contract Base Model).Discipline Designator (HD for Hydraulics and Drainage).The file name should follow the Civil Design CAD File Naming Conventions: W:\CT_CONNECT_DDE\CT_Configuration\Workspaces-Civil\CT Civil English WorkSpace\Standards\Seed\Seed2D – CT RoadDesign.dgn For more detailed explanations and help please see: CTDOT CONNECT DDE GUIDE Volume 1 – Overview.įollow the CTDOT CONNECT DDE GUIDE Volume 1 – M.4.1 Accessing the Application and follow the instructions to create a New File and ensure you use the correct seed file: Create a New File in ORD for HEC-RAS dataĮnsure ORD is set to the correct Workspace ( CT Civil English Workspace) and Workset ( 8-digit project number). For instruction on HEC-RAS please see Help within the HEC-RAS program.

#Merge two reaches hec ras how to#

Note: This guide will not instruct you how to use HEC-RAS or how to manipulate the HEC-RAS data.

Become familiar with the workflows and tools used in ORD for developing the required data for import to HEC_RAS.

Learn how to use ORD to create cross section data for import to HEC-RAS.

You will be using OpenRoads Designer tools and MicroStation tools to create the cross-section data for import to HEC_RAS. For Help with merging terrains please see OpenRoads Designer CE - Help. All terrains should be merged including the existing terrain into one terrain for best results of proposed conditions. In some instances, the highway design model or the bridge design model will also be needed to create a proposed terrain model. If additional survey is needed this should be requested by H&D engineers from Surveys. For most hydraulic designs, the survey terrain model (existing terrain) requested by the design lead unit will be adequate. OpenRoads Designers creates and uses information from the 3D surface models (Terrain) information. This module will instruct users to create cross sections data using OpenRoads Designer (ORD) for import to the HEC-RAS software. Introduction Create a New File in ORD for HEC-RAS data Create Stream Centerline for HEC-RAS data Draw Bank and Overbank for HEC-RAS data Draw Cross Section Lines for HEC-RAS data Use ORD Analysis - Hydraulic Tool to Create HEC-RAS data Import OpenRoads Data to HEC-RAS Introduction

Module 1 - OpenRoads Designer (ORD) Cross Sections for Import to HEC-RAS