Meet the Interface and Features of the new version of DREN-URBA, the Software for Urban Drainage Systems Design

With version 2.0 of our storm sewer design software, we have incorporated a number of tools that will definitely make the work of the designer of such systems much easier.

In this new version, we have left in the background, so to speak, the data input and results display in the form of tables, to make the way for a graphical interface where the various components of the urban drainage system can be easily created and, once results are obtained, the display will be entirely on the drawn network layout through a code of colors that can be user-defined.

Thus, issues such as the water spread and total flow and conveyance capacity relationship, among other parameters, on the streets, channels, or stormwater pipes, can be shown directly on the drawing plan of the studied urban sector, facilitating the decision-making process to ensure the stormwater design conditions:


As you may have already seen in the videos of the first tests we did with our stormwater design software, there is more information than we referred to in the preceding paragraphs, so in the tutorial series here we intend to give you a walk-through for each of the software’s components and make it clear how didactic as well as useful this new version is.

The FILE Page


From the FILE page, you can choose to:

  • Create a new project.
  • Open an existing one, clicking on the “Search Project files” button and selecting the file’s location on the computer. You also have the option to open any of the Recent Projects and select one from the list.
  • In case there is an active project, you can save it or save it with a different name, or, of course, close it.
  • If, having changed the default setting for units, the size of the objects in the drawing, or the calculation and design parameters, among others, in the currently open project, you want to keep them so that they are taken as default values in the following new urban drainage system projects that you create with the software, you have the option to save these settings by clicking the Save Options button at the FILES Page’s Settings tab:

Remember that this option only works if you have a project currently opened in the software.

  • If, however, you want the software’s incorporated default values to be restored, use the Restore Settings button. In this case, you need not have any open project.
  • Restoring-Default-Settings

  • Additionally in the FILES page’s settings tab, you´ll find the software’s language selector. Just click on your chosen language box and restart the software to see the changes in the interface.

DREN-URBA’S Main Window

Once you’ve created a new urban drainage system project or opened an existing one, you can start using the tools at the software’s tabs.

In the main window you have two zones:

The Ribbon on the upper part contains five tabs:


In each of which, we have grouped the tools that let you to create and edit the various urban drainage system’s components to design, set the defaults for units, calculation and design parameters, and visualize results through tables and longitudinal profiles, among others.

At the bottom are three tabs:

  • The Drawing tab is where you will be the most of the time because it is where you will create (draw) the components of the urban drainage system. Here you have the option of importing a drawing file to use as a background image that, in case it is to scale, serves as a reference to set the streets, channels, and storm sewer pipe lengths created into the project.


  • The Surface Drainage tab shows the data and calculation results table for the components of the urban drainage superficial system (streets and channels) that you have set as “Current” in the tab of the same name at the Ribbon in the main window’s upper section.


  • Likewise, the Sewer Pipes tab shows the Manholes and Pipe sections’ data and results tables for the storm sewer pipes network that has been set as “Current” in the SEWER PIPES tab in the Ribbon at the top.


The tables in the last two tabs not only show you the drainage system design data and calculation results but also, if applicable, they will show warnings (by coloring them in light red), highlighting the table cells whose values do not meet the design’s control conditions that you have specified for your project.

By double-clicking on any row in these tables, the software will show the properties dialog associated with the displayed object type.

DREN-URBA’S Ribbon Tabs

To go into more detail, you’ll see, in the following tutorials, videos highlighting the characteristics of the different tools contained in each of the tabs of our stormwater design software.

  1. TheDrawing Tab
  2. The Surface Drainage Tab
  3. The Sewer Pipes Tab
  4. The Settings Tab
  5. The Results Tab