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<?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/" xmlns:slash="http://purl.org/rss/1.0/modules/slash/" xmlns:wfw="http://wellformedweb.org/CommentAPI/"><channel><title>How can I add wastewater to LiquidLibrary on Hammer?</title><link>https://communities.bentley.com/products/hydraulics___hydrology/f/haestad-hydraulics-and-hydrology-forum/228398/how-can-i-add-wastewater-to-liquidlibrary-on-hammer</link><description>Hi, 
 
 I am modelling a wastewater transfer line in Hammer. When I tried to calculate the wave speed I found that the wastewater is not among the available liquids in Liquid Library. 
 And my Liquid Library is locked! 
 
 Thank You! 
 Hoda</description><dc:language>en-US</dc:language><generator>Telligent Community 12</generator><item><title>RE: How can I add wastewater to LiquidLibrary on Hammer?</title><link>https://communities.bentley.com/thread/706507?ContentTypeID=1</link><pubDate>Wed, 13 Apr 2022 15:41:05 GMT</pubDate><guid isPermaLink="false">6dad98f5-dbc9-4c4d-a9ba-e9da8dc6aa8e:01cc158c-5267-4e63-8b1a-a76d858e7181</guid><dc:creator>Jesse Dringoli</dc:creator><description>&lt;p&gt;As Tom mentioned, most users would likely select the regular water option for normal wastewater. You also have the option to calculate your wave speeds externally and manually enter them in the model or import from a spreadsheet via ModelBuilder.&lt;/p&gt;
[quote userid="1230568" url="~/products/hydraulics___hydrology/f/haestad-hydraulics-and-hydrology-forum/228398/how-can-i-add-wastewater-to-liquidlibrary-on-hammer"]And my Liquid Library is locked!&amp;nbsp;[/quote]
&lt;p&gt;You may need to run HAMMER as administrator in order to write to the default engineering libraries. See: &lt;a href="/products/hydraulics___hydrology/w/hydraulics_and_hydrology__wiki/23294/unable-to-edit-engineering-libraries-with-lock-symbol-showing-as-unavailable"&gt;Unable to edit Engineering Libraries with lock symbol / showing as &amp;quot;&amp;lt;Unavailable&amp;gt;&amp;quot;&lt;/a&gt;&lt;/p&gt;
&lt;p&gt;You can also create your own engineering libraries and store the XML files in a location that you have write access to. See: &lt;a href="/products/hydraulics___hydrology/w/hydraulics_and_hydrology__wiki/7478/modifying-and-using-engineering-library-data"&gt;Modifying and using Engineering Library Data&lt;/a&gt;&lt;/p&gt;&lt;div style="clear:both;"&gt;&lt;/div&gt;</description></item><item><title>RE: How can I add wastewater to LiquidLibrary on Hammer?</title><link>https://communities.bentley.com/thread/706489?ContentTypeID=1</link><pubDate>Wed, 13 Apr 2022 15:02:38 GMT</pubDate><guid isPermaLink="false">6dad98f5-dbc9-4c4d-a9ba-e9da8dc6aa8e:09f90b0f-6b92-4950-8ee4-7b2fd7d1e930</guid><dc:creator>Tom Walski</dc:creator><description>&lt;p&gt;As far as transients are involved, wastewater is still water, unless it is the consistency of mud.&lt;/p&gt;&lt;div style="clear:both;"&gt;&lt;/div&gt;</description></item></channel></rss>