DRAINS stores information on pipes, pits and overflow routes in two places:
- in each .drn file containing the information on a system in binary formats,
You will probably have .db1 (or DB1) files for various regional of Australia, together with a file named Drains.db1, which is opened when a new file is created. Drains.db1 is not opened when an established DRAINS model is opened; the data base used is that stored within this .drn file. The other .db1 files can be converted into the Drains.db1 file by renaming or copying them.
This process occurs within DRAINS when a Default data base is selected.