how to use special ditch grades in open roads

RE: how to use special ditch grades in open roads

Derek Schmidt — Fri, 09 Dec 2016 14:36:05 GMT

From what I've seen, one end condition has a priority of 100 will be processed properly if any points it depends on are established by an end condition whose priority is 99 or less. I may not have the full picture here, but I tinkered with end condition priorities, and that's pretty much what my observations tell me.

So with that in mind, I guess the question is whether it is more efficient to target the profile of an attachment or to do it as a point control.

Between 2 and 5 minutes into this video communities.bentley.com/.../30090.video-corridor-processing-optimization-tips-and-techniques, the presenter says that a combination of horizontal point control and project to surface is quicker than targeting a point control that sets both offset and elevation.

That's not quite our scenario, but in the end, the difference in processing time probably isn't noticeable in most cases.

RE: how to use special ditch grades in open roads

Chris Key — Fri, 09 Dec 2016 14:12:24 GMT

It depends on the complexity of the model. I would lean toward a point control because as you add more and more end conditions, it is having to target and solve that end condition, then target and solve the backslope. This would probably be just fine in a ditch condition but in other situations where components are based on these end conditions, it may take a little more to process. In general they are doing the same thing.

RE: how to use special ditch grades in open roads

Derek Schmidt — Fri, 09 Dec 2016 13:39:21 GMT

Point control would certainly work, but my habit is to have an end condition in the template that looks for the vertical aspect of a feature definition. Do you have any advice on whether one is superior, or if there's any difference in processing speed?

RE: how to use special ditch grades in open roads

Beebe Ray — Fri, 09 Dec 2016 12:40:46 GMT

You can set a vertical only point control for the ditch frontslope. That way it uses your special ditch profile but horizontal is still controlled by the slope.