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| Many new and improved features are available in the latest version of BOSS HEC-RAS. The latest version of BOSS HEC-RAS offers all the features of its previous version with many of the bugs fixed. Note that the latest version of BOSS HEC-RAS runs only on computers using Windows 95, 98, or NT (NT 4.0 or NT 3.51 with service pack 5), and not on Windows 3.1 or 3.11 operating systems. |
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| - HEC-RAS now has the ability to model floating ice as well dynamic ice jams. This option is available from the geometric data editor and is documented in all three of the HEC-RAS manuals.
- Reading data from and writing results to HEC-DSS (HEC Data Storage System). The user can read flow and stage data from HEC-DSS and use it for computing water surface profiles.
- An option to view data contained in a HEC-DSS file was also added. This option allows the user to graphically plot or tabulate data stored in DSS. This option is available from the View menu on the HEC-RAS window.
- Internal Rating Curves. The user can now put a rating curve at any cross section. During the computations, the program will take the water surface from the rating curve instead of computing a value.
- The number of profiles allowed has been increased from 15 to 100.
- GIS Export now allows users to export the cross section surface lines to the GIS file.
- Additionally, the user can specify to send just the main channel only or the entire cross section. This feature was added to allow users to supplement there terrain data with surveyed cross section information.
- Picture viewer now shows the picture filename in the window title and a copy to clipboard button was added.
- Boundary Condition Editor - When a boundary condition in the table is double clicked, the appropriate dialog editor is opened
- Graphics - Zooming out has changed meaning. The "Zoom Out" option now doubles the zoom view in height and width. A new option called "Full Plot" was added. When this option is selected, the entire plot is displayed. Also, a "Pan" option was added for moving the graphic around when zoomed in.
- The user can now rotate the three dimensional graphic while zoomed in on a piece of the river system. The old version would automatically zoom out when attempting this.
- In previous versions, the path to the RAS data directory could not have any spaces in it. This restriction has been removed. Also, the path length had a set limit. This problem has also been fixed.
- Two new methods of specifying the distance for cross section interpolation were added. A constant distance interval from the upstream cross section and a set specific location from the upstream section.
- Internal bridge cross section editor has added options to insert a row and to delete a row.
- An option was added to the schematic editor to reverse the stationing data of the cross section geometry. This was added for those data sets that have the cross sections entered from right to left looking downstream, instead of from left to right.
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| Many new features have been added to the geometric data model schematic, such as drawing reaches as multi-point lines; subdividing and combining existing river reaches; specifying coordinates of the stream system and cross-section cut lines in order for the schematic to be drawn geospatially correct; displaying background maps behind the river schematic; and attaching scanned-in images to any cross-section or hydraulic structure. A viewer is provided so the user can view any attached image from the model schematic. | Back To Top |
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| Discussion of the new features in HEC-RAS version 3.1.3, including unsteady flow modeling. | Click for details |
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| Detailed description of HEC-RAS’ steady and unsteady riverine modeling capabilities, including floodplain encroachments, bridges, culverts, channel modifications, split flow, subcritical & supercritical flow, and more. | Click for details |
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| We are offering BOSS HEC-RAS 3.1.3 for the special low price of only $95 to anyone visiting our web site. | Click for details |
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| Download free HEC-RAS tutorials, documentation, and support utilities. | Click for details |
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| Discussion of the computational differences between between HEC-RAS and HEC-2. | Click for details |
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| | | BOSS HEC-RAS now represents the river geospatially correct—rather than simple straight lines to represent rivers. |
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| This option allows the user to enter a weir and/or a series of gated spillways as a structure that is directly in-line with the main river system. Radial and sluice type gates can be used. Spillway and weir crests can be either Ogee, broad crested, or sharp crested. The user can control which gates are open and how far they are opened, on a profile by profile basis. | Back To Top |
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| | | BOSS HEC-RAS can analyze inline weirs and gated spillways. |
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| The user can now perform channel modifications as a series of trapezoidal cuts, which can be performed over a range of cross-sections simultaneously. This option provides the capabilities of the Channel Improvement Option in HEC-2, with some additional capabilities and a much more convenient way of entering the data. The user can view the channel modifications, and changing cut information is easily performed. The modified geometry is saved as a separate geometric data file. The program computes and displays area and volume information for the cut and fill quantities. | Back To Top |
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| | | BOSS HEC-RAS can account for channel modifications—sim ilar to BOSS HEC-2’s channel improvement option. |
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| HEC-RAS now has the ability to import stream-system schematic information and cross-section data from GIS and CAD programs. The software imports the complete X, Y, and Z coordinates of all the data. This allows the HEC-RAS river system schematic to be plotted geospatially correct. Additionally, HEC-RAS’ 3-dimensional graphic plot is also displayed geospatially correct when GIS data is imported. Once the user has performed the hydraulic calculations, the computed water surface profiles can be exported from HEC-RAS to a GIS or CAD program for the development of floodplain maps. | Back To Top |
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| An option has been added to the HEC-RAS bridge routines to allow use of the Federal Highway Administration (FHWA) WSPRO bridge hydraulics methodology for low flow hydraulics. This option is user selectable, and can be used in conjunction with existing HEC-RAS bridge methodologies. | Back To Top |
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| | | The new FHWA WSPRO routines can be used in the bridge opening hydraulic calculations. |
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| Bridge scour computations can now be performed within HEC-RAS. The scour routines follow the procedures outlined in the Federal Highway Administration Publication HEC-18 (Hydraulic Engineering Circular No. 18). | Back To Top |
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| | | The new bridge scour dialog allows you to compute contaction, pier, and abutment scour at bridge openings. |
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| Two new culvert shapes have been added to the HEC-RAS list of available culverts. These shapes are the High Profile Arch culvert and the Low Profile Arch culvert. | Back To Top |
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| HEC-RAS now has the capability to model adverse sloping culverts; culverts contained within supercritical flow conditions; and culverts with a mixed flow regime inside of the culvert barrel. The program also plots a detailed water surface and energy profile through the culvert barrel. | Back To Top |
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| The user now has the capability to modify the two internal (program generated) bridge cross-sections. These sections are by default a copy of the cross-sections at the upstream and downstream bridge faces. The user can now modify the station and elevation points, main channel bank stations, and roughness coefficients for the two internal bridge sections. This option is available from the Options Menu from the bridge/culvert editor. | Back To Top |
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| We have added the ability to import multiple HEC-2 data sets into existing geometric data files, as well as the capability to import survey data that is in the USACE standard survey format. | Back To Top |
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| You can now specify an equivalent roughness (k value roughness height) instead of Manning's n roughness. For each estimate of the water surface elevation, Manning's n values are computed from an equation that is a function of the k value and the hydraulic flow radius. | Back To Top |
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| We have improved the Lines, Symbols, and Colors editor. Users now change any line type, thickness, and color; symbol type, size, and color; and fill pattern and color. These changes can be made to the current plot or to the default settings. When the changes are made to the default settings they will stay that way until they are changed again. | Back To Top |
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| Users can now control the point size of all text displayed on the graphics. | Back To Top |
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| Users now have more control over the user defined tables. Additional options have been added to allow the user to get information inside hydraulic structures, and to control what type of structures are reported. | Back To Top |
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| | | BOSS HEC-RAS now allows you to more easily create a user-defined output table. |
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| Three new output tables have been added for the new inline weir and gated spillway analysis option. One of these new output tables has been added to the cross-section output tables and the other two tables have been added to the profile output tables. | Back To Top |
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| Many new variables have been added to the standard cross-section output table, bridge table, and culvert table. | Back To Top |
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| A printer setup option has been added to the graphical and tabular output options. | Back To Top |
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| We have added two new description dialog boxes. A Project Description dialog box has been added to the main window, and a Plan Description dialog box has been added to the Steady Flow Analysis window. These description dialog boxes should allow users to better document their work. Also, when importing HEC-2 data, all of the comments at the top of the HEC-2 file will be loaded into the Project Description dialog box. | Back To Top |
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| We have added the ability to enter road embankment side slopes into the Deck/Roadway editor. In addition, the profile plot also shows the defined sloping embankments. | Back To Top |
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