https://communities.bentley.com/products/road___site_design/f/geopak-inroads-mx-openroads-forum/193093/drainage-data-fileI&#39;m trying to use the Storm and Sanitary product add in to design a storm drain system. However, whenever I try to use anything in the Drainage tab (e.g. Drainage - Lay Out or Drainage - Edit/Review...) I get an error stating &quot;You must have an open drainageen-USTelligent Community 12https://communities.bentley.com/thread/571307?ContentTypeID=1Thu, 27 Feb 2020 19:53:15 GMT6dad98f5-dbc9-4c4d-a9ba-e9da8dc6aa8e:989e9fbd-34d2-492a-8371-95a3b6329e12caddcop<p>I believe the Drainage Structures.dat file needs to contain definitions of pipes and structures, along with having a SDB file. I am not sure if that message is for one or the other but I believe it is definitely one of these.&nbsp;</p> <p>Tools &gt; Drainage &gt; Options has a place to browse to the .dat file, Tools &gt; Structures File is how you edit its contents.</p> <p>File &gt; New &gt; Drainage tab in how you create the sdb file.&nbsp;</p><div style="clear:both;"></div>https://communities.bentley.com/thread/571275?ContentTypeID=1Thu, 27 Feb 2020 17:02:47 GMT6dad98f5-dbc9-4c4d-a9ba-e9da8dc6aa8e:b11a4dcb-b172-40f9-8c87-bdac43293415Josef Uhricek<p>Hello Brandon, You should create sdb file (access mdb database otherwise) in Drainage tab or in File/New and open it for your drainage project.</p><div style="clear:both;"></div>