Unless the user wants to manually enter pipe diameters in the cost estimating run, the user should have already created the scenarios for which the costs are to be run before entering Darwin Designer.

To develop a cost estimate for new piping, start Darwin Designer using Analysis > Darwin Designer and create a New Design Study, if none exists, by picking New > Create Design Study above the left pane. (Users with a limited features version of the software may not be able to use all the optimization features in Darwin Designer but will be able to use manual cost estimating.)