A new DRAINAGE folder has been added to the standard TIP structure , with read/write permissions set to include Hydro and Roadway.

When a new TIP folder is created, an empty DRN file will be placed automatically in the DRAINAGE folder.

When drainage design is completed, the DRN file will be replaced by Hydro.

Roadway will not copy the DRN to their folders but will reference the DRN file from the DRAINAGE folder. Revisions to the DRN file by Roadway, will be made in the DRAINAGE folder.

Roadway will include the \DRAINAGE\DRN file when creating the project IPS files.

Lateral drainage ditches and berm ditches (with typical geometry) will be placed by Roadway in the \DRAINAGE\DRN file.

The DDE criteria has been revised to draw ditches into the plan view automatically at the same time cross sections are processed.

Meandering Ditches

Natural stream design (meandering ditches) cross sections will be created by Hydro in a new cross section file (or added to a copy of Roadway's cross sections.) The COGO chain data will be made available to Roadway for merging into the RDY GPK file.

Berm Ditches

Hydro will provide a COGO profile for berm ditches that do not follow natural downhill contours.

When necessary, Roadway will add the back slope stake of berm ditches to the DRN file for setting ROW limits.

Roadway CADD support has developed berm ditch criteria to automate these processes. (See Roadway Web site updates of March 21.)

Head/Tail Ditches Hydro will make sure head and tail ditches are drawn to scale and cut cross sections when necessary.

Hydro will place all details on a "ditch detail" level as specified in the Leveling chart.

Roadway will provide DDE for lateral ditches.

To include buffer zones (1&2) in the final plans, Correct levels of the DRN file should be turned on within the project IPS files.

CAMA information, Wetland and Stream Impacts, Buffer Impacts, and All permit related legends and such will be put on their respective levels.

Leveling charts on the Roadway Design web site have been revised to reflect these changes.