• ORD Drainage & Utilities - Questions and Observations (ORD v10.16.2.267)

    Our organization is just starting to use the ORD Drainage & Utilities package for storm sewer design. We have laid out a storm sewer system and performed an analysis on the system using the software. We also used calculations in our organization's design…
  • Geopak Drainage Error Computing output for a network with Pipe-Arch

    I am trying to design a storm drain network in an area with limited cover. When I try to use the "Pipe-Arch" option, Geopak reports an error. The same network runs just fine when using circular pipe or box culvert or elliptical pipe. I checked the drainage…
  • within Storm and Sanitary, I am finding that the pipe velocity does not match my calculations.

    The program is saying that the flow is subcritical. while my calculation show that it should be super critical. The variables are thus: D= 1.5'; Longitudinal slope= 1.00%; Roughness = 0.0130; flow rate = 0.479 cfs The program gives a Froude Number…
  • Geopak Drainage Tool Analysis Line string overload

    I have a project with two miles of interstate both north and southbound. The state is worried about hydroplaning so we used a mobile lidar system to obtain the surface information. I created a surface from the collected points and ran the "drainage patterns…
  • Geopak Drainage - Friction Slope

    Has anyone had any issues with Geopak Drainage calculating the friction slopes wrong? I have contacted Bently support and spoke with a couple of their engineers, sent them all my data , and they could not seem to figure it out. I even created a spreadsheet…