Which brings up the Gate Editor Window HEC-RAS Version 3.1ġ6 In Line Structure After filling in the data. InLine Structures In Line Structure March 2003 Click on the Gate button. HEC-RAS Version 3.1ġ5 In Line Structure Click on the Gate button. InLine Structures In Line Structure March 2003 … the plot is updated to show the embankment. HEC-RAS Version 3.1ġ4 In Line Structure … the plot is updated to show the embankment. Which brings up the Weir Editor Window HEC-RAS Version 3.1ġ3 In Line Structure After filling in the data. InLine Structures In Line Structure March 2003 Click on the Weir/Embankment button. HEC-RAS Version 3.1ġ2 In Line Structure Click on the Weir/Embankment button. Note you can edit the upstream cross-section from this button. HEC-RAS Version 3.1ġ0 InLine Structures In Line Structure March 2003 Brings up window to input cross-section location of the structure (weir) HEC-RAS Version 3.1ġ1 InLine Structures In Line structure March 2003 Adds a plot of the upstream cross-section to the window. March 2003 Must add structure as first step. HEC-RAS Version 3.1ĩ In Line Structure Must add structure as first step. HEC-RAS Version 3.1Ĩ InLine Structures In Line Structure March 2003 Brings up window similar to culvert and bridge windows. Select Lateral Structure button from Cross-Section Editor for lateral weirs. Uncontrolled Spillwayħ InLine Structures In Line Structure March 2003 Begin by selecting InLine Structure button from Cross-Section Editor. Suggested cross-section locations are the same as for bridges and culverts.ĥ In Line Structure Typical Cross-Section 2 with ineffective flow areas defined.Ħ In Line Structure Typical Cross-Section 3 with ineffective flow areas defined. Uncontrolled overflow area is also an option. Identical gates must have same type, size, elevation, and coefficient. Up to 10 groups of gates with up to 25 identical gates per group are allowed for each in line weir. Gates are either radial (tainter) or vertical lift (sluice). Weir shapes are either ogee or broad crested. Modeling method is very similar to bridges and culverts. March 2003 Modeling Inline Structures using HEC-RAS Version 3.1 HEC-RAS Version 3.1Ģ In Line Structures Can be used to model in-line gated spillways, overflow weirs, drop structures, and dams. The following dialog allows for selection of tables to be created.1 Modeling Inline Structures using HEC-RAS Version 3.1 Users create new tables using Database -> Create River Database Tables or tool. There are three tables always required for a model creation: river lines, cross-sections and flow paths. If a table needs a user specified attribute, it is given in the User defined attributes column. The table below lists river database tables created by RiverGIS. There is a table for river lines, cross-sections etc. Model geometry data are stored in a river database tables. When a schema is created from outside the RiverGIS use the Database > Refresh Connections List or the tool. If a connection or schema was created in a previous session, it can be chosen from the DB Connection or Schema dropdown lists. RiverGIS will automatically switch to the newly created schema, as shown below. Users can create a schema in a number of ways: using pgAdmin, QGIS’ own DB Manager or from within RiverGIS dialog by choosing Database > Create New Schema or clicking tool icon from Database toolbar. Therefore, the first step is to create a new schema for a model. Each model goes to its own schema, a kind of database directory for data grouping. Until a database and schema are set in RiverGIS window, most of the tools are inactive.Ī single PostgreSQL database can be used to store many models geometries. A term river database refers to a database used by RiverGIS. A fundamental difference from HEC-GeoRAS is that the RiverGIS uses a PostgreSQL database with PostGIS spatial extension for data storage (see Requirements for installation instructions).
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