{"id":3149,"date":"2016-04-01T18:59:20","date_gmt":"2016-04-01T23:29:20","guid":{"rendered":"https:\/\/www.hidrasoftware.com\/en\/?p=3149"},"modified":"2016-04-02T12:48:59","modified_gmt":"2016-04-02T17:18:59","slug":"available-options-for-wastewater-design-flows-calculation","status":"publish","type":"post","link":"https:\/\/www.hidrasoftware.com\/en\/available-options-for-wastewater-design-flows-calculation\/","title":{"rendered":"Available Options for Wastewater Design Flows Calculation in Sanitary Sewer Networks with CLOACAS"},"content":{"rendered":"

Determining the design flows for sanitary sewer pipes depends on several factors such as regulatory and designer\u2019s criteria as well as the available information, among others.<\/p>\n

With the intention of offering greater flexibility in the Sanitary Sewer Networks design, CLOACAS (SEWERS) has included four possible methods for calculating the sewer pipes sections\u2019 sanitary design inflow<\/strong>. In this tutorial, we develop the details of each of these methods and also give some considerations to take into account when creating a sewer network project in our software.<\/p>\n

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The selection of the method for wastewater design flow calculation in the software should be one of the first tasks to be performed<\/strong> (before starting the sewer network\u2019s properties data entry) because, based on the chosen method, different data fields will be shown for the pipe sections in the Sewer Pipes Editor<\/a> dialog.<\/strong><\/p>\n

Furthermore, it is necessary to emphasize that the selected method can be changed at any time (i.e., after the sanitary network has been built), but the design flow-related data, entered into the sewer pipe sections properties under the previously selected method, will be lost,<\/strong> which could represent a drawback for the analysis and design.<\/p>\n<\/div><\/div>\n

The sanitary sewer network project\u2019s calculation method will be selected from the Wastewater Design Flow calculation methods dialog<\/em><\/strong>, accessed from the SETTINGS tab, Calculation Parameters panel, Inflows button:<\/em><\/strong><\/p>\n

\"Accessing-to-the-Wastewater-design-flow-calculation-methods-dialog\"<\/p>\n

Here you will find the following options:<\/p>\n

1 Directly set, for each sanitary sewer pipe, the corresponding Wastewater Design Flow.<\/h2>\n

\"directly-set-the-respective-wastewater-design-flow-at-each-sewer-pipe\"<\/p>\n

This is the simplest option in which it is a must to have the wastewater design flows calculated for each sewer pipe section<\/strong> within the sanitary network. When this option is enabled, the Sewer Pipes Editor dialog will show, in the upper right, a text box <\/strong>to allow the user to enter the respective value for the edited sewer pipe section:<\/p>\n

\"Entering-the-wastewater-design-flow-at-each-sewer-pipe-section\"<\/p>\n

<\/a><\/p>\n

2 Set a Unitary Wastewater Flow as a function of the area contributing to a particular sanitary sewer section.<\/h2>\n

When the sanitary sewer network\u2019s total design flow, as well as the total contributing area, are known<\/strong> or, also, a Unitary Design Flow (l\/s per hectare, for example), you can specify the respective values \u200b\u200bby activating this option:<\/p>\n

\"Entering-an-unitary-wastewater-design-flow\"<\/p>\n

Now the Sewer Pipes Editor will ask, for each pipe section, the corresponding contributing area<\/strong> so the software can perform the respective wastewater flow calculation.<\/p>\n

3 Directly set, for each sanitary sewer pipe, the corresponding Average Potable Water Design Flow.<\/h2>\n

If the available urban sector data is limited to each sewer pipe section\u2019s average potable water inflow<\/strong>, this is the option to be chosen:<\/p>\n

\"Entering-the-average-potable-water-design-flow\"<\/p>\n

Here, the Sewer Pipes Editor will show a text box where the user must enter the affluent potable water design flow<\/strong> to each sewer pipe section within the sanitary network.<\/p>\n

When this option is selected (as well as the next one that we will explain later), we see that at the bottom of the Wastewater Design Flow calculation methods dialog, <\/em>several fields become enabled in order to <\/strong>specify some design factors:<\/p>\n