GeoPak Drainage

My customer is having some difficulities with Geo Drainage and the results given after attempting to enter a user defined rainfall amount.  She is using the following:  Microstation version 8 08.05.02.35 and Geopack version 08.05.02.45

The details to the issue are:

"I am trying to add a user-defined intensity equation in the Rainfall tab of the Drainage Library, but for some reason Geopak won't accept the "c" coefficient. I am trying to add:

10-yr, 88.1, 18.4, 0.756

100-yr,120.3, 21.3, 0.741

 

Since I could not add the equation, I tried adding an Intensity Table and named it Lake Jackson (the only way I was able to accomplish was to create and import a txt file). I've checked the #s and it seems ok, however, when I try to compute the discharge from the node it calculates it incorrectly.

 

My typical section is one lane each way with a median. There's 60-deg parking on each side of the road and also along the median. I plan to have grate inlets between the parking stalls and the driving lane. I've entered a spread section for that.

I have some associated files from the client if the above does not offer enough details. 

Stephen Loveless