<?xml version="1.0" encoding="UTF-8" ?>
<?xml-stylesheet type="text/xsl" href="https://communities.bentley.com/cfs-file/__key/system/syndication/rss.xsl" media="screen"?><rss version="2.0" xmlns:dc="http://purl.org/dc/elements/1.1/"><channel><title>Modeling a side weir conduit control structure</title><link>https://communities.bentley.com/products/hydraulics___hydrology/w/hydraulics_and_hydrology__wiki/31551/modeling-a-side-weir-conduit-control-structure</link><description /><dc:language>en-US</dc:language><generator>Telligent Community 12</generator><item><title>Modeling a side weir conduit control structure</title><link>https://communities.bentley.com/products/hydraulics___hydrology/w/hydraulics_and_hydrology__wiki/31551/modeling-a-side-weir-conduit-control-structure</link><pubDate>Mon, 17 Oct 2022 12:49:16 GMT</pubDate><guid isPermaLink="false">6dad98f5-dbc9-4c4d-a9ba-e9da8dc6aa8e:4fa190ce-e47d-4829-b6c1-7a43784a170b</guid><dc:creator>Jesse Dringoli</dc:creator><comments>https://communities.bentley.com/products/hydraulics___hydrology/w/hydraulics_and_hydrology__wiki/31551/modeling-a-side-weir-conduit-control-structure#comments</comments><description>Current Revision posted to OpenFlows | Water Infrastructure Wiki by Jesse Dringoli on 10/17/2022 12:49:16 PM&lt;br /&gt;
&lt;table style="background-color:#dce5f0;border:0px solid #dce5f0;" border="0"&gt;
&lt;tbody&gt;
&lt;tr&gt;
&lt;td style="text-align:right;"&gt;&lt;strong&gt;Product(s):&lt;/strong&gt;&lt;/td&gt;
&lt;td&gt;SewerGEMS, CivilStorm&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;
&lt;td style="text-align:right;"&gt;&lt;strong&gt;Version(s):&lt;/strong&gt;&lt;/td&gt;
&lt;td&gt;CONNECT Edition, V8i&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;
&lt;td style="text-align:right;"&gt;&lt;strong&gt;Area:&lt;/strong&gt;&lt;/td&gt;
&lt;td&gt;Modeling&lt;/td&gt;
&lt;/tr&gt;
&lt;/tbody&gt;
&lt;/table&gt;
&lt;p&gt;&lt;/p&gt;
&lt;h1&gt;Problem&lt;/h1&gt;
&lt;p&gt;I have used the &amp;quot;Side Weir&amp;quot; option in a weir conduit control structure, but it does not appear to be discharging weir outflow away from my pipe - the flow continues downstream.&lt;/p&gt;
&lt;p&gt;What is the right way to model a side weir conduit control structure that diverts outflow when the water level reaches the weir crest?&lt;/p&gt;
&lt;h1&gt;Background&lt;/h1&gt;
&lt;p&gt;Side weirs or overflow weirs are used to divert extra high flows to overflow waterways. Typically a side weir is a weir parallel to the main sewer pipe and with enough high crest elevation to prevent any discharge of dry-weather flow, but it is also low and long enough to discharge required excess of wet weather flow. Another example of a side weir is the emergency overflow weir or spillway at the top of a detention pond.&amp;nbsp;&lt;/p&gt;
&lt;p&gt;&lt;a href="/cfs-file/__key/communityserver-wikis-components-files/00-00-00-00-32/SideWeirDiagram.png"&gt;&lt;img alt=" " src="/resized-image/__size/940x0/__key/communityserver-wikis-components-files/00-00-00-00-32/SideWeirDiagram.png" /&gt;&lt;/a&gt;&lt;/p&gt;
&lt;p&gt;&lt;/p&gt;
&lt;h1&gt;Solution&lt;/h1&gt;
&lt;p&gt;All &lt;a href="/products/hydraulics___hydrology/w/hydraulics_and_hydrology__wiki/35057/using-start-and-stop-control-structures-for-conduits-and-channels"&gt;conduit control structures&lt;/a&gt; are always simulated as being in series (in-line) with the conduit. So, to model a side weir (that diverts flow away), you&amp;#39;ll need to lay out a conduit at a tee (perpendicular) with the main line, and model the side weir as a start control structure on that conduit. To do this set the property of the conduit to &amp;quot;Has Start&amp;nbsp;Control Structure?&amp;quot; (or &amp;quot;Has Stop Control Structure?&amp;quot;) to &amp;#39;True&amp;#39; and create the control structure.&amp;nbsp;It&amp;nbsp;should look like the drawing below in the display pane:&lt;/p&gt;
&lt;p&gt;&lt;a href="/cfs-file/__key/communityserver-wikis-components-files/00-00-00-00-32/SideWeir.png"&gt;&lt;img alt=" " src="/resized-image/__size/940x0/__key/communityserver-wikis-components-files/00-00-00-00-32/SideWeir.png" /&gt;&lt;/a&gt;&lt;/p&gt;
&lt;p&gt;&lt;/p&gt;
&lt;p&gt;&lt;a href="https://communities.bentley.com/cfs-file/__key/communityserver-wikis-components-files/00-00-00-00-32/Side-Weir-Example-_2D00_-saved-in-CONNECT-Edition.zip"&gt;communities.bentley.com/.../Side-Weir-Example-_2D00_-saved-in-CONNECT-Edition.zip&lt;/a&gt;&lt;/p&gt;
&lt;p&gt;Specifying &amp;quot;side weir&amp;quot; vs. &amp;quot;inline weir&amp;quot; changes the available input and the way in which the weir equation is calculated. The side weir option is appropriate for your situation, but you&amp;#39;ll still need to direct the outflow appropriately.&lt;/p&gt;
&lt;p class="p"&gt;The flow and head for a side weir are determined as:&lt;/p&gt;
&lt;p class="p"&gt;Q = C L h&lt;sup class="ph sup"&gt;5/3&lt;/sup&gt;&lt;/p&gt;
&lt;p class="p"&gt;The units on the weir discharge coefficient are ft&lt;sup class="ph sup"&gt;1/3&lt;/sup&gt;/s when flow is in cfs, and L and h are in ft.&amp;nbsp;&lt;/p&gt;
&lt;h1&gt;See Also&lt;/h1&gt;
&lt;p&gt;&lt;a href="/products/hydraulics___hydrology/w/hydraulics_and_hydrology__wiki/35057/using-start-and-stop-control-structures-for-conduits-and-channels"&gt;Using Start and Stop Control Structures for conduits and channels&lt;/a&gt;&lt;/p&gt;
&lt;p&gt;&lt;a href="/products/hydraulics___hydrology/f/5925/p/104786/314998#314998"&gt;DIVERSION MODELING (forum question)&lt;/a&gt;&lt;/p&gt;
&lt;p&gt;&lt;a href="/products/hydraulics___hydrology/f/5925/t/128072"&gt;Side weir is not functioning&lt;/a&gt;&lt;/p&gt;&lt;div style="clear:both;"&gt;&lt;/div&gt;

&lt;div style="font-size: 90%;"&gt;Tags: control structure, SewerGEMS, Side Weir, Reviewed2018, CivilStorm&lt;/div&gt;
</description></item><item><title>Modeling a side weir conduit control structure</title><link>https://communities.bentley.com/products/hydraulics___hydrology/w/hydraulics_and_hydrology__wiki/31551/modeling-a-side-weir-conduit-control-structure/revision/6</link><pubDate>Thu, 15 Nov 2018 06:01:20 GMT</pubDate><guid isPermaLink="false">6dad98f5-dbc9-4c4d-a9ba-e9da8dc6aa8e:4fa190ce-e47d-4829-b6c1-7a43784a170b</guid><dc:creator>Yashodhan Joshi</dc:creator><comments>https://communities.bentley.com/products/hydraulics___hydrology/w/hydraulics_and_hydrology__wiki/31551/modeling-a-side-weir-conduit-control-structure#comments</comments><description>Revision 6 posted to OpenFlows | Water Infrastructure Wiki by Yashodhan Joshi on 11/15/2018 6:01:20 AM&lt;br /&gt;
&lt;table style="background-color:#dce5f0;border:0px solid #dce5f0;" border="0"&gt;
&lt;tbody&gt;
&lt;tr&gt;
&lt;td style="text-align:right;"&gt;&lt;strong&gt;Product(s):&lt;/strong&gt;&lt;/td&gt;
&lt;td&gt;SewerGEMS, CivilStorm&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;
&lt;td style="text-align:right;"&gt;&lt;strong&gt;Version(s):&lt;/strong&gt;&lt;/td&gt;
&lt;td&gt;10.XX.XX.XX, 08.11.XX.XX&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;
&lt;td style="text-align:right;"&gt;&lt;strong&gt;Area:&lt;/strong&gt;&lt;/td&gt;
&lt;td&gt;Modeling&lt;/td&gt;
&lt;/tr&gt;
&lt;/tbody&gt;
&lt;/table&gt;
&lt;p&gt;&lt;/p&gt;
&lt;h1&gt;Problem&lt;/h1&gt;
&lt;p&gt;I have used the &amp;quot;Side Weir&amp;quot; option in a weir conduit control structure, but it does not appear to be discharging weir outflow away from my pipe - the flow continues downstream.&lt;/p&gt;
&lt;p&gt;What is the right way to model a side weir conduit control structure that diverts outflow when the water level reaches the weir crest?&lt;/p&gt;
&lt;h1&gt;Background&lt;/h1&gt;
&lt;p&gt;Side weirs or overflow weirs are used to divert extra high flows to overflow waterways. Typically a side weir is a weir parallel to the main sewer pipe and with enough high crest elevation to prevent any discharge of dry-weather flow, but it is also low and long enough to discharge required excess of wet weather flow. Another example of a side weir is the emergency overflow weir or spillway at the top of a detention pond.&amp;nbsp;&lt;/p&gt;
&lt;p&gt;&lt;a href="/cfs-file/__key/communityserver-wikis-components-files/00-00-00-00-32/SideWeirDiagram.png"&gt;&lt;img alt=" " src="/resized-image/__size/940x0/__key/communityserver-wikis-components-files/00-00-00-00-32/SideWeirDiagram.png" /&gt;&lt;/a&gt;&lt;/p&gt;
&lt;p&gt;&lt;/p&gt;
&lt;h1&gt;Solution&lt;/h1&gt;
&lt;p&gt;All conduit control structures are always in series with the conduit. So, to model a side weir, you&amp;#39;ll need to lay out a conduit at a tee with the main line, and model the side weir as a start control structure on that conduit. To do this set the property of the conduit to &amp;quot;Has Start&amp;nbsp;Control Structure?&amp;quot; (or &amp;quot;Has Stop Control Structure?&amp;quot;) to &amp;#39;True&amp;#39; and create the control structure.&amp;nbsp;It&amp;nbsp;should look like the drawing below in the display pane:&lt;/p&gt;
&lt;p&gt;&lt;a href="/cfs-file/__key/communityserver-wikis-components-files/00-00-00-00-32/SideWeir.png"&gt;&lt;img alt=" " src="/resized-image/__size/940x0/__key/communityserver-wikis-components-files/00-00-00-00-32/SideWeir.png" /&gt;&lt;/a&gt;&lt;/p&gt;
&lt;p&gt;&lt;/p&gt;
&lt;p&gt;&lt;a href="https://communities.bentley.com/cfs-file/__key/communityserver-wikis-components-files/00-00-00-00-32/Side-Weir-Example-_2D00_-saved-in-CONNECT-Edition.zip"&gt;communities.bentley.com/.../Side-Weir-Example-_2D00_-saved-in-CONNECT-Edition.zip&lt;/a&gt;&lt;/p&gt;
&lt;p&gt;Specifying &amp;quot;side weir&amp;quot; vs. &amp;quot;inline weir&amp;quot; changes the available input and the way in which the weir equation is calculated. The side weir option is appropriate for your situation, but you&amp;#39;ll still need to direct the outflow appropriately.&lt;/p&gt;
&lt;p class="p"&gt;The flow and head for a side weir are determined as:&lt;/p&gt;
&lt;p class="p"&gt;Q = C L h&lt;sup class="ph sup"&gt;5/3&lt;/sup&gt;&lt;/p&gt;
&lt;p class="p"&gt;The units on the weir discharge coefficient are ft&lt;sup class="ph sup"&gt;1/3&lt;/sup&gt;/s when flow is in cfs, and L and h are in ft.&amp;nbsp;&lt;/p&gt;
&lt;h1&gt;See Also&lt;/h1&gt;
&lt;p&gt;&lt;a href="/products/hydraulics___hydrology/f/5925/p/104786/314998#314998"&gt;DIVERSION MODELING (forum question)&lt;/a&gt;&lt;/p&gt;
&lt;p&gt;&lt;a href="/products/hydraulics___hydrology/f/5925/t/128072"&gt;Side weir is not functioning&lt;/a&gt;&lt;/p&gt;&lt;div style="clear:both;"&gt;&lt;/div&gt;

&lt;div style="font-size: 90%;"&gt;Tags: CONNECT Edition, control structure, SewerGEMS, Side Weir, Reviewed2018, CivilStorm&lt;/div&gt;
</description></item><item><title>Modeling a side weir conduit control structure</title><link>https://communities.bentley.com/products/hydraulics___hydrology/w/hydraulics_and_hydrology__wiki/31551/modeling-a-side-weir-conduit-control-structure/revision/5</link><pubDate>Thu, 05 Jan 2017 20:46:55 GMT</pubDate><guid isPermaLink="false">6dad98f5-dbc9-4c4d-a9ba-e9da8dc6aa8e:4fa190ce-e47d-4829-b6c1-7a43784a170b</guid><dc:creator>MPachlhofer</dc:creator><comments>https://communities.bentley.com/products/hydraulics___hydrology/w/hydraulics_and_hydrology__wiki/31551/modeling-a-side-weir-conduit-control-structure#comments</comments><description>Revision 5 posted to OpenFlows | Water Infrastructure Wiki by MPachlhofer on 1/5/2017 8:46:55 PM&lt;br /&gt;
&lt;p style="padding:0;margin:0;"&gt;&lt;/p&gt;
&lt;table style="border:0px solid #dce5f0;background-color:#dce5f0;" border="0"&gt;
&lt;tbody&gt;
&lt;tr&gt;
&lt;td style="text-align:right;"&gt;&lt;strong&gt;&amp;nbsp;&lt;/strong&gt;&lt;/td&gt;
&lt;td style="text-align:right;"&gt;&lt;strong&gt;Product(s):&lt;/strong&gt;&lt;/td&gt;
&lt;td&gt;Bentley SewerGEMS, CivilStorm&lt;/td&gt;
&lt;td&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;
&lt;td style="text-align:right;"&gt;&lt;strong&gt;&amp;nbsp;&lt;/strong&gt;&lt;/td&gt;
&lt;td style="text-align:right;"&gt;&lt;strong&gt;Version(s):&lt;/strong&gt;&lt;/td&gt;
&lt;td&gt;08.11.XX.XX, 10.XX.XX.XX&lt;/td&gt;
&lt;td&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;
&lt;td style="text-align:right;"&gt;&lt;strong&gt;&amp;nbsp;&lt;/strong&gt;&lt;/td&gt;
&lt;td style="text-align:right;"&gt;&lt;strong&gt;Area:&lt;/strong&gt;&lt;/td&gt;
&lt;td&gt;Modeling&lt;/td&gt;
&lt;td&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;/tbody&gt;
&lt;/table&gt;
&lt;p&gt;&lt;/p&gt;
&lt;h1&gt;Problem&lt;/h1&gt;
&lt;p&gt;I have used the &amp;quot;Side Weir&amp;quot; option in a weir conduit control structure, but it does not appear to be discharging weir outflow away from my pipe - the flow continues downstream.&lt;/p&gt;
&lt;p&gt;What is the right way to model a side weir conduit control structure that diverts outflow when the water level reaches the weir crest?&lt;/p&gt;
&lt;h1&gt;Background&lt;/h1&gt;
&lt;p&gt;Side weirs or overflow weirs are used to divert extra high flows to overflow waterways. Typically a side weir is a weir parallel to the main sewer pipe and with enough high crest elevation to prevent any discharge of dry-weather flow, but it is also low and long enough to discharge required excess of wet weather flow. Another example of a side weir is the emergency overflow weir or spillway at the top of a detention pond.&amp;nbsp;&lt;/p&gt;
&lt;p&gt;&lt;a href="/cfs-file/__key/communityserver-wikis-components-files/00-00-00-00-32/SideWeirDiagram.png"&gt;&lt;img alt=" " src="/resized-image/__size/940x0/__key/communityserver-wikis-components-files/00-00-00-00-32/SideWeirDiagram.png" /&gt;&lt;/a&gt;&lt;/p&gt;
&lt;p&gt;&lt;/p&gt;
&lt;h1&gt;Solution&lt;/h1&gt;
&lt;p&gt;All conduit control structures are always in series with the conduit. So, to model a side weir, you&amp;#39;ll need to lay out a conduit at a tee with the main line, and model the side weir as a start control structure on that conduit. To do this set the property of the conduit to &amp;quot;Has Start&amp;nbsp;Control Structure?&amp;quot; (or &amp;quot;Has Stop Control Structure?&amp;quot;) to &amp;#39;True&amp;#39; and create the control structure.&amp;nbsp;It&amp;nbsp;should look like the drawing below in the display pane:&lt;/p&gt;
&lt;p&gt;&lt;a href="/cfs-file/__key/communityserver-wikis-components-files/00-00-00-00-32/SideWeir.png"&gt;&lt;img alt=" " src="/resized-image/__size/940x0/__key/communityserver-wikis-components-files/00-00-00-00-32/SideWeir.png" /&gt;&lt;/a&gt;&lt;/p&gt;
&lt;p&gt;&lt;/p&gt;
&lt;p&gt;&lt;a href="https://communities.bentley.com/cfs-file/__key/communityserver-wikis-components-files/00-00-00-00-32/Side-Weir-Example-_2D00_-saved-in-CONNECT-Edition.zip"&gt;communities.bentley.com/.../Side-Weir-Example-_2D00_-saved-in-CONNECT-Edition.zip&lt;/a&gt;&lt;/p&gt;
&lt;p&gt;Specifying &amp;quot;side weir&amp;quot; vs. &amp;quot;inline weir&amp;quot; changes the available input and the way in which the weir equation is calculated. The side weir option is appropriate for your situation, but you&amp;#39;ll still need to direct the outflow appropriately.&lt;/p&gt;
&lt;p class="p"&gt;The flow and head for a side weir are determined as:&lt;/p&gt;
&lt;p class="p"&gt;Q = C L h&lt;sup class="ph sup"&gt;5/3&lt;/sup&gt;&lt;/p&gt;
&lt;p class="p"&gt;The units on the weir discharge coefficient are ft&lt;sup class="ph sup"&gt;1/3&lt;/sup&gt;/s when flow is in cfs, and L and h are in ft.&amp;nbsp;&lt;/p&gt;
&lt;h1&gt;See Also&lt;/h1&gt;
&lt;p&gt;&lt;a href="/products/hydraulics___hydrology/f/5925/p/104786/314998#314998"&gt;DIVERSION MODELING (forum question)&lt;/a&gt;&lt;/p&gt;
&lt;p&gt;&lt;a href="/products/hydraulics___hydrology/f/5925/t/128072"&gt;Side weir is not functioning&lt;/a&gt;&lt;/p&gt;&lt;div style="clear:both;"&gt;&lt;/div&gt;

&lt;div style="font-size: 90%;"&gt;Tags: control structure, SewerGEMS, Side Weir, reviewed2017, CivilStorm&lt;/div&gt;
</description></item><item><title>Modeling a side weir conduit control structure</title><link>https://communities.bentley.com/products/hydraulics___hydrology/w/hydraulics_and_hydrology__wiki/31551/modeling-a-side-weir-conduit-control-structure/revision/4</link><pubDate>Thu, 05 Jan 2017 20:46:27 GMT</pubDate><guid isPermaLink="false">6dad98f5-dbc9-4c4d-a9ba-e9da8dc6aa8e:4fa190ce-e47d-4829-b6c1-7a43784a170b</guid><dc:creator>MPachlhofer</dc:creator><comments>https://communities.bentley.com/products/hydraulics___hydrology/w/hydraulics_and_hydrology__wiki/31551/modeling-a-side-weir-conduit-control-structure#comments</comments><description>Revision 4 posted to OpenFlows | Water Infrastructure Wiki by MPachlhofer on 1/5/2017 8:46:27 PM&lt;br /&gt;
&lt;p style="padding:0;margin:0;"&gt;&lt;/p&gt;
&lt;table style="border:0px solid #dce5f0;background-color:#dce5f0;" border="0"&gt;
&lt;tbody&gt;
&lt;tr&gt;
&lt;td style="text-align:right;"&gt;&lt;strong&gt;&amp;nbsp;&lt;/strong&gt;&lt;/td&gt;
&lt;td style="text-align:right;"&gt;&lt;strong&gt;Product(s):&lt;/strong&gt;&lt;/td&gt;
&lt;td&gt;Bentley SewerGEMS, CivilStorm&lt;/td&gt;
&lt;td&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;
&lt;td style="text-align:right;"&gt;&lt;strong&gt;&amp;nbsp;&lt;/strong&gt;&lt;/td&gt;
&lt;td style="text-align:right;"&gt;&lt;strong&gt;Version(s):&lt;/strong&gt;&lt;/td&gt;
&lt;td&gt;08.11.XX.XX, 10.XX.XX.XX&lt;/td&gt;
&lt;td&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;
&lt;td style="text-align:right;"&gt;&lt;strong&gt;&amp;nbsp;&lt;/strong&gt;&lt;/td&gt;
&lt;td style="text-align:right;"&gt;&lt;strong&gt;Environment:&lt;/strong&gt;&lt;/td&gt;
&lt;td&gt;N\A&lt;/td&gt;
&lt;td&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;
&lt;td style="text-align:right;"&gt;&lt;strong&gt;&amp;nbsp;&lt;/strong&gt;&lt;/td&gt;
&lt;td style="text-align:right;"&gt;&lt;strong&gt;Area:&lt;/strong&gt;&lt;/td&gt;
&lt;td&gt;Modeling&lt;/td&gt;
&lt;td&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;/tbody&gt;
&lt;/table&gt;
&lt;p&gt;&lt;/p&gt;
&lt;h1&gt;Problem&lt;/h1&gt;
&lt;p&gt;I have used the &amp;quot;Side Weir&amp;quot; option in a weir conduit control structure, but it does not appear to be discharging weir outflow away from my pipe - the flow continues downstream.&lt;/p&gt;
&lt;p&gt;What is the right way to model a side weir conduit control structure that diverts outflow when the water level reaches the weir crest?&lt;/p&gt;
&lt;h1&gt;Background&lt;/h1&gt;
&lt;p&gt;Side weirs or overflow weirs are used to divert extra high flows to overflow waterways. Typically a side weir is a weir parallel to the main sewer pipe and with enough high crest elevation to prevent any discharge of dry-weather flow, but it is also low and long enough to discharge required excess of wet weather flow. Another example of a side weir is the emergency overflow weir or spillway at the top of a detention pond.&amp;nbsp;&lt;/p&gt;
&lt;p&gt;&lt;a href="/cfs-file/__key/communityserver-wikis-components-files/00-00-00-00-32/SideWeirDiagram.png"&gt;&lt;img alt=" " src="/resized-image/__size/940x0/__key/communityserver-wikis-components-files/00-00-00-00-32/SideWeirDiagram.png" /&gt;&lt;/a&gt;&lt;/p&gt;
&lt;p&gt;&lt;/p&gt;
&lt;h1&gt;Solution&lt;/h1&gt;
&lt;p&gt;All conduit control structures are always in series with the conduit. So, to model a side weir, you&amp;#39;ll need to lay out a conduit at a tee with the main line, and model the side weir as a start control structure on that conduit. To do this set the property of the conduit to &amp;quot;Has Start&amp;nbsp;Control Structure?&amp;quot; (or &amp;quot;Has Stop Control Structure?&amp;quot;) to &amp;#39;True&amp;#39; and create the control structure.&amp;nbsp;It&amp;nbsp;should look like the drawing below in the display pane:&lt;/p&gt;
&lt;p&gt;&lt;a href="/cfs-file/__key/communityserver-wikis-components-files/00-00-00-00-32/SideWeir.png"&gt;&lt;img alt=" " src="/resized-image/__size/940x0/__key/communityserver-wikis-components-files/00-00-00-00-32/SideWeir.png" /&gt;&lt;/a&gt;&lt;/p&gt;
&lt;p&gt;&lt;/p&gt;
&lt;p&gt;&lt;a href="https://communities.bentley.com/cfs-file/__key/communityserver-wikis-components-files/00-00-00-00-32/Side-Weir-Example-_2D00_-saved-in-CONNECT-Edition.zip"&gt;communities.bentley.com/.../Side-Weir-Example-_2D00_-saved-in-CONNECT-Edition.zip&lt;/a&gt;&lt;/p&gt;
&lt;p&gt;Specifying &amp;quot;side weir&amp;quot; vs. &amp;quot;inline weir&amp;quot; changes the available input and the way in which the weir equation is calculated. The side weir option is appropriate for your situation, but you&amp;#39;ll still need to direct the outflow appropriately.&lt;/p&gt;
&lt;p class="p"&gt;The flow and head for a side weir are determined as:&lt;/p&gt;
&lt;p class="p"&gt;Q = C L h&lt;sup class="ph sup"&gt;5/3&lt;/sup&gt;&lt;/p&gt;
&lt;p class="p"&gt;The units on the weir discharge coefficient are ft&lt;sup class="ph sup"&gt;1/3&lt;/sup&gt;/s when flow is in cfs, and L and h are in ft.&amp;nbsp;&lt;/p&gt;
&lt;h1&gt;See Also&lt;/h1&gt;
&lt;p&gt;&lt;a href="/products/hydraulics___hydrology/f/5925/p/104786/314998#314998"&gt;DIVERSION MODELING (forum question)&lt;/a&gt;&lt;/p&gt;
&lt;p&gt;&lt;a href="/products/hydraulics___hydrology/f/5925/t/128072"&gt;Side weir is not functioning&lt;/a&gt;&lt;/p&gt;&lt;div style="clear:both;"&gt;&lt;/div&gt;

&lt;div style="font-size: 90%;"&gt;Tags: control structure, SewerGEMS, Side Weir, reviewed2017, CivilStorm&lt;/div&gt;
</description></item><item><title>Modeling a side weir conduit control structure</title><link>https://communities.bentley.com/products/hydraulics___hydrology/w/hydraulics_and_hydrology__wiki/31551/modeling-a-side-weir-conduit-control-structure/revision/3</link><pubDate>Mon, 07 Nov 2016 02:04:45 GMT</pubDate><guid isPermaLink="false">6dad98f5-dbc9-4c4d-a9ba-e9da8dc6aa8e:4fa190ce-e47d-4829-b6c1-7a43784a170b</guid><dc:creator>Jesse Dringoli</dc:creator><comments>https://communities.bentley.com/products/hydraulics___hydrology/w/hydraulics_and_hydrology__wiki/31551/modeling-a-side-weir-conduit-control-structure#comments</comments><description>Revision 3 posted to OpenFlows | Water Infrastructure Wiki by Jesse Dringoli on 11/7/2016 2:04:45 AM&lt;br /&gt;
&lt;p style="padding:0;margin:0;"&gt;&lt;/p&gt;
&lt;table style="border:0px solid #dce5f0;background-color:#dce5f0;" border="0"&gt;
&lt;tbody&gt;
&lt;tr&gt;
&lt;td style="text-align:right;"&gt;&lt;strong&gt;&amp;nbsp;&lt;/strong&gt;&lt;/td&gt;
&lt;td style="text-align:right;"&gt;&lt;strong&gt;Product(s):&lt;/strong&gt;&lt;/td&gt;
&lt;td&gt;Bentley SewerGEMS, CivilStorm&lt;/td&gt;
&lt;td&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;
&lt;td style="text-align:right;"&gt;&lt;strong&gt;&amp;nbsp;&lt;/strong&gt;&lt;/td&gt;
&lt;td style="text-align:right;"&gt;&lt;strong&gt;Version(s):&lt;/strong&gt;&lt;/td&gt;
&lt;td&gt;08.11.XX.XX, 10.XX.XX.XX&lt;/td&gt;
&lt;td&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;
&lt;td style="text-align:right;"&gt;&lt;strong&gt;&amp;nbsp;&lt;/strong&gt;&lt;/td&gt;
&lt;td style="text-align:right;"&gt;&lt;strong&gt;Environment:&lt;/strong&gt;&lt;/td&gt;
&lt;td&gt;N\A&lt;/td&gt;
&lt;td&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;
&lt;td style="text-align:right;"&gt;&lt;strong&gt;&amp;nbsp;&lt;/strong&gt;&lt;/td&gt;
&lt;td style="text-align:right;"&gt;&lt;strong&gt;Area:&lt;/strong&gt;&lt;/td&gt;
&lt;td&gt;Modeling&lt;/td&gt;
&lt;td&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;/tbody&gt;
&lt;/table&gt;
&lt;p&gt;&lt;/p&gt;
&lt;h1&gt;Problem&lt;/h1&gt;
&lt;p&gt;I have used the &amp;quot;Side Weir&amp;quot; option in a weir conduit control structure, but it does not appear to be discharging weir outflow away from my pipe - the flow continues downstream.&lt;/p&gt;
&lt;p&gt;What is the right way to model a side weir conduit control structure that diverts outflow when the water level reaches the weir crest?&lt;/p&gt;
&lt;h1&gt;Background&lt;/h1&gt;
&lt;p&gt;Side weirs or overflow weirs are used to divert extra high flows to overflow waterways. Typically a side weir is a weir parallel to the main sewer pipe and with enough high crest elevation to prevent any discharge of dry-weather flow, but it is also low and long enough to discharge required excess of wet weather flow. Another example of a side weir is the emergency overflow weir or spillway at the top of a detention pond.&amp;nbsp;&lt;/p&gt;
&lt;p&gt;&lt;a href="/cfs-file/__key/communityserver-wikis-components-files/00-00-00-00-32/SideWeirDiagram.png"&gt;&lt;img src="/resized-image/__size/940x0/__key/communityserver-wikis-components-files/00-00-00-00-32/SideWeirDiagram.png" alt=" " /&gt;&lt;/a&gt;&lt;/p&gt;
&lt;p&gt;&lt;/p&gt;
&lt;h1&gt;Solution&lt;/h1&gt;
&lt;p&gt;All conduit control structures are always in series with the conduit. So, to model a side weir, you&amp;#39;ll need to lay out a conduit at a tee with the main line, and model the side weir as a start control structure on that conduit. Like this:&lt;/p&gt;
&lt;p&gt;&lt;a href="/cfs-file/__key/communityserver-wikis-components-files/00-00-00-00-32/SideWeir.png"&gt;&lt;img src="/resized-image/__size/940x0/__key/communityserver-wikis-components-files/00-00-00-00-32/SideWeir.png" alt=" " /&gt;&lt;/a&gt;&lt;/p&gt;
&lt;p&gt;&lt;/p&gt;
&lt;p&gt;&lt;a href="https://communities.bentley.com/cfs-file/__key/communityserver-wikis-components-files/00-00-00-00-32/Side-Weir-Example-_2D00_-saved-in-CONNECT-Edition.zip"&gt;communities.bentley.com/.../Side-Weir-Example-_2D00_-saved-in-CONNECT-Edition.zip&lt;/a&gt;&lt;/p&gt;
&lt;p&gt;Specifying &amp;quot;side weir&amp;quot; vs. &amp;quot;inline weir&amp;quot; changes the available input and the way in which the weir equation is calculated. The side weir option is appropriate for your situation, but you&amp;#39;ll still need to direct the outflow appropriately.&lt;/p&gt;
&lt;p class="p"&gt;The flow and head for a side weir are determined as:&lt;/p&gt;
&lt;p class="p"&gt;Q = C L h&lt;sup class="ph sup"&gt;5/3&lt;/sup&gt;&lt;/p&gt;
&lt;p class="p"&gt;The units on the weir discharge coefficient are ft&lt;sup class="ph sup"&gt;1/3&lt;/sup&gt;/s when flow is in cfs, and L and h are in ft.&amp;nbsp;&lt;/p&gt;
&lt;h1&gt;See Also&lt;/h1&gt;
&lt;p&gt;&lt;a href="/products/hydraulics___hydrology/f/5925/p/104786/314998#314998"&gt;DIVERSION MODELING (forum question)&lt;/a&gt;&lt;/p&gt;
&lt;p&gt;&lt;a href="/products/hydraulics___hydrology/f/5925/t/128072"&gt;Side weir is not functioning&lt;/a&gt;&lt;/p&gt;&lt;div style="clear:both;"&gt;&lt;/div&gt;

&lt;div style="font-size: 90%;"&gt;Tags: control structure, SewerGEMS, Side Weir, CivilStorm&lt;/div&gt;
</description></item><item><title>Modeling a side weir conduit control structure</title><link>https://communities.bentley.com/products/hydraulics___hydrology/w/hydraulics_and_hydrology__wiki/31551/modeling-a-side-weir-conduit-control-structure/revision/2</link><pubDate>Mon, 07 Nov 2016 02:02:06 GMT</pubDate><guid isPermaLink="false">6dad98f5-dbc9-4c4d-a9ba-e9da8dc6aa8e:4fa190ce-e47d-4829-b6c1-7a43784a170b</guid><dc:creator>Jesse Dringoli</dc:creator><comments>https://communities.bentley.com/products/hydraulics___hydrology/w/hydraulics_and_hydrology__wiki/31551/modeling-a-side-weir-conduit-control-structure#comments</comments><description>Revision 2 posted to OpenFlows | Water Infrastructure Wiki by Jesse Dringoli on 11/7/2016 2:02:06 AM&lt;br /&gt;
&lt;p style="padding:0;margin:0;"&gt;&lt;/p&gt;
&lt;table style="border:0px solid #dce5f0;background-color:#dce5f0;" border="0"&gt;
&lt;tbody&gt;
&lt;tr&gt;
&lt;td style="text-align:right;"&gt;&lt;strong&gt;&amp;nbsp;&lt;/strong&gt;&lt;/td&gt;
&lt;td style="text-align:right;"&gt;&lt;strong&gt;Product(s):&lt;/strong&gt;&lt;/td&gt;
&lt;td&gt;Bentley SewerGEMS, CivilStorm&lt;/td&gt;
&lt;td&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;
&lt;td style="text-align:right;"&gt;&lt;strong&gt;&amp;nbsp;&lt;/strong&gt;&lt;/td&gt;
&lt;td style="text-align:right;"&gt;&lt;strong&gt;Version(s):&lt;/strong&gt;&lt;/td&gt;
&lt;td&gt;08.11.XX.XX, 10.XX.XX.XX&lt;/td&gt;
&lt;td&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;
&lt;td style="text-align:right;"&gt;&lt;strong&gt;&amp;nbsp;&lt;/strong&gt;&lt;/td&gt;
&lt;td style="text-align:right;"&gt;&lt;strong&gt;Environment:&lt;/strong&gt;&lt;/td&gt;
&lt;td&gt;N\A&lt;/td&gt;
&lt;td&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;
&lt;td style="text-align:right;"&gt;&lt;strong&gt;&amp;nbsp;&lt;/strong&gt;&lt;/td&gt;
&lt;td style="text-align:right;"&gt;&lt;strong&gt;Area:&lt;/strong&gt;&lt;/td&gt;
&lt;td&gt;Modeling&lt;/td&gt;
&lt;td&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;/tbody&gt;
&lt;/table&gt;
&lt;p&gt;&lt;/p&gt;
&lt;h1&gt;Problem&lt;/h1&gt;
&lt;p&gt;I have used the &amp;quot;Side Weir&amp;quot; option in a weir conduit control structure, but it does not appear to be discharging weir outflow away from my pipe - the flow continues downstream.&lt;/p&gt;
&lt;p&gt;What is the right way to model a side weir conduit control structure that diverts outflow when the water level reaches the weir crest?&lt;/p&gt;
&lt;h1&gt;Background&lt;/h1&gt;
&lt;p&gt;Side weirs or overflow weirs are used to divert extra high flows to overflow waterways. Typically a side weir is a weir parallel to the main sewer pipe and with enough high crest elevation to prevent any discharge of dry-weather flow, but it is also low and long enough to discharge required excess of wet weather flow. Another example of a side weir is the emergency overflow weir or spillway at the top of a detention pond.&amp;nbsp;&lt;/p&gt;
&lt;p&gt;&lt;a href="/cfs-file/__key/communityserver-wikis-components-files/00-00-00-00-32/SideWeirDiagram.png"&gt;&lt;img src="/resized-image/__size/940x0/__key/communityserver-wikis-components-files/00-00-00-00-32/SideWeirDiagram.png" alt=" " /&gt;&lt;/a&gt;&lt;/p&gt;
&lt;p&gt;&lt;/p&gt;
&lt;h1&gt;Solution&lt;/h1&gt;
&lt;p&gt;All conduit control structures are always in series with the conduit. So, to model a side weir, you&amp;#39;ll need to lay out a conduit at a tee with the main line, and model the side weir as a start control structure on that conduit. Like this:&lt;/p&gt;
&lt;p&gt;&lt;a href="/cfs-file/__key/communityserver-wikis-components-files/00-00-00-00-32/SideWeir.png"&gt;&lt;img src="/resized-image/__size/940x0/__key/communityserver-wikis-components-files/00-00-00-00-32/SideWeir.png" alt=" " /&gt;&lt;/a&gt;&lt;/p&gt;
&lt;p&gt;&lt;/p&gt;
&lt;p&gt;&lt;a href="https://communities.bentley.com/cfs-file/__key/communityserver-wikis-components-files/00-00-00-00-32/Side-Weir-Example-_2D00_-saved-in-CONNECT-Edition.zip"&gt;communities.bentley.com/.../Side-Weir-Example-_2D00_-saved-in-CONNECT-Edition.zip&lt;/a&gt;&lt;/p&gt;
&lt;p&gt;Specifying &amp;quot;side weir&amp;quot; vs. &amp;quot;inline weir&amp;quot; changes the available input and the way in which the weir equation is calculated. The side weir option is appropriate for your situation, but you&amp;#39;ll still need to direct the outflow appropriately.&lt;/p&gt;
&lt;p class="p"&gt;The flow and head for a side weir are determined as:&lt;/p&gt;
&lt;p class="p"&gt;Q = C L h&lt;sup class="ph sup"&gt;5/3&lt;/sup&gt;&lt;/p&gt;
&lt;p class="p"&gt;The units on the weir discharge coefficient are ft&lt;sup class="ph sup"&gt;1/3&lt;/sup&gt;/s when flow is in cfs, and L and h are in ft.&amp;nbsp;&lt;/p&gt;
&lt;h1&gt;See Also&lt;/h1&gt;
&lt;p&gt;&lt;/p&gt;&lt;div style="clear:both;"&gt;&lt;/div&gt;

&lt;div style="font-size: 90%;"&gt;Tags: control structure, SewerGEMS, Side Weir, CivilStorm&lt;/div&gt;
</description></item><item><title>Modeling a side weir conduit control structure</title><link>https://communities.bentley.com/products/hydraulics___hydrology/w/hydraulics_and_hydrology__wiki/31551/modeling-a-side-weir-conduit-control-structure/revision/1</link><pubDate>Mon, 07 Nov 2016 02:00:47 GMT</pubDate><guid isPermaLink="false">6dad98f5-dbc9-4c4d-a9ba-e9da8dc6aa8e:4fa190ce-e47d-4829-b6c1-7a43784a170b</guid><dc:creator>Jesse Dringoli</dc:creator><comments>https://communities.bentley.com/products/hydraulics___hydrology/w/hydraulics_and_hydrology__wiki/31551/modeling-a-side-weir-conduit-control-structure#comments</comments><description>Revision 1 posted to OpenFlows | Water Infrastructure Wiki by Jesse Dringoli on 11/7/2016 2:00:47 AM&lt;br /&gt;
&lt;p style="padding:0;margin:0;"&gt;&lt;/p&gt;
&lt;table style="border:0px solid #dce5f0;background-color:#dce5f0;" border="0"&gt;
&lt;tbody&gt;
&lt;tr&gt;
&lt;td style="text-align:right;"&gt;&lt;strong&gt;&amp;nbsp;&lt;/strong&gt;&lt;/td&gt;
&lt;td style="text-align:right;"&gt;&lt;strong&gt;Product(s):&lt;/strong&gt;&lt;/td&gt;
&lt;td&gt;Bentley SewerGEMS, CivilStorm&lt;/td&gt;
&lt;td&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;
&lt;td style="text-align:right;"&gt;&lt;strong&gt;&amp;nbsp;&lt;/strong&gt;&lt;/td&gt;
&lt;td style="text-align:right;"&gt;&lt;strong&gt;Version(s):&lt;/strong&gt;&lt;/td&gt;
&lt;td&gt;08.11.XX.XX, 10.XX.XX.XX&lt;/td&gt;
&lt;td&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;
&lt;td style="text-align:right;"&gt;&lt;strong&gt;&amp;nbsp;&lt;/strong&gt;&lt;/td&gt;
&lt;td style="text-align:right;"&gt;&lt;strong&gt;Environment:&lt;/strong&gt;&lt;/td&gt;
&lt;td&gt;N\A&lt;/td&gt;
&lt;td&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;
&lt;td style="text-align:right;"&gt;&lt;strong&gt;&amp;nbsp;&lt;/strong&gt;&lt;/td&gt;
&lt;td style="text-align:right;"&gt;&lt;strong&gt;Area:&lt;/strong&gt;&lt;/td&gt;
&lt;td&gt;Modeling&lt;/td&gt;
&lt;td&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;/tbody&gt;
&lt;/table&gt;
&lt;p&gt;&lt;/p&gt;
&lt;h1&gt;Problem&lt;/h1&gt;
&lt;p&gt;I have used the &amp;quot;Side Weir&amp;quot; option in a weir conduit control structure, but it does not appear to be discharging weir outflow away from my pipe - the flow continues downstream.&lt;/p&gt;
&lt;p&gt;What is the right way to model a side weir conduit control structure that diverts outflow when the water level reaches the weir crest?&lt;/p&gt;
&lt;h1&gt;Background&lt;/h1&gt;
&lt;p&gt;Side weirs or overflow weirs are used to divert extra high flows to overflow waterways. Typically a side weir is a weir parallel to the main sewer pipe and with enough high crest elevation to prevent any discharge of dry-weather flow, but it is also low and long enough to discharge required excess of wet weather flow. Another example of a side weir is the emergency overflow weir or spillway at the top of a detention pond.&amp;nbsp;&lt;/p&gt;
&lt;p&gt;&lt;a href="/cfs-file/__key/communityserver-wikis-components-files/00-00-00-00-32/SideWeirDiagram.png"&gt;&lt;img src="/resized-image/__size/940x0/__key/communityserver-wikis-components-files/00-00-00-00-32/SideWeirDiagram.png" alt=" " /&gt;&lt;/a&gt;&lt;/p&gt;
&lt;p&gt;&lt;/p&gt;
&lt;h1&gt;Solution&lt;/h1&gt;
&lt;p&gt;All conduit control structures are always in series with the conduit. So, to model a side weir, you&amp;#39;ll need to lay out a conduit at a tee with the main line, and model the side weir as a start control structure on that conduit. Like this:&lt;/p&gt;
&lt;p&gt;&lt;a href="/cfs-file/__key/communityserver-wikis-components-files/00-00-00-00-32/SideWeir.png"&gt;&lt;img src="/resized-image/__size/940x0/__key/communityserver-wikis-components-files/00-00-00-00-32/SideWeir.png" alt=" " /&gt;&lt;/a&gt;&lt;/p&gt;
&lt;p&gt;Specifying &amp;quot;side weir&amp;quot; vs. &amp;quot;inline weir&amp;quot; changes the available input and the way in which the weir equation is calculated. The side weir option is appropriate for your situation, but you&amp;#39;ll still need to direct the outflow appropriately.&lt;/p&gt;
&lt;p class="p"&gt;The flow and head for a side weir are determined as:&lt;/p&gt;
&lt;p class="p"&gt;Q = C L h&lt;sup class="ph sup"&gt;5/3&lt;/sup&gt;&lt;/p&gt;
&lt;p class="p"&gt;The units on the weir discharge coefficient are ft&lt;sup class="ph sup"&gt;1/3&lt;/sup&gt;/s when flow is in cfs, and L and h are in ft.&amp;nbsp;&lt;/p&gt;
&lt;h1&gt;See Also&lt;/h1&gt;
&lt;p&gt;&lt;/p&gt;&lt;div style="clear:both;"&gt;&lt;/div&gt;

&lt;div style="font-size: 90%;"&gt;Tags: control structure, SewerGEMS, Side Weir, CivilStorm&lt;/div&gt;
</description></item></channel></rss>