Having some issues trying to use a specific form of point control. Specifically the Mode - Vertical, Control Type - Elevation and Grade.
I am attempting to set the inslope to be variable using the point control. I would like the horizontal width of the inslope to be variable, the slope to be constant, but target a specific elevation.
The point control seems to work in the corridor as far as the constant slope (1:3) and the horizontal distance being variable. But my issue is that it does not seem to target my specific elevation of (905.00)
Currently in the area of my point control the pond bottom (specific elevation) varies throughout. it seems as though it is just following a vertical difference with the profile? I can adjust the elevation in point control and watch the inslope shorten or extend depending on whether I go up or down. But still the elevations are not the same throughout the area.
Something else interesting that I just noticed is that even though my inslopes horizontal distance is changing, the vertical difference from the centerline profile is constant. Which is why I am getting the horizontal change for inslope and vertical elevation change for pond bottom.
Not sure why it is locked to the centerline profile and not targeting an elevation as it is told to.
It's not recognizing the elevation so its drawing to the template. If you drew it 5' wide in the template then it will be 5' in the model.
So End Condition > Target type > elevation. Not sure if the vertical offset is the elevation. That's confusing.
As for the point, don't turn on infinite.
Point control might be better.
Make sure element has a feature definition and add to corridor as corridor reference. Element must be offset from alignment all places you want this condition to be true. Element must have 'active' profile.
I'm just listing things to check.
Point control is either Horizontal and/or Vertical.
I figured it out. The problem was the grade setting in the point control. I had it set to (1:3) or 0.33% as it would show.
But when I switched the grade to 0% then all of my elevations were correct. I would assume it was because my constraint in my template already had slope set to it of 1:3 and maybe when both the template and point control had it, it caused it to go an additional +/-1:3 possibly?
Lesson learned, if looking for a specific elevation with point control and your template constraint has slope set, set point control grade to 0.
Interesting. I have never used that one. I have always used either linear element or feature definition. That's why I wasn't understanding. I have profiles from the drainage people for special ditches and use those all the time. So many tools to do the same things.
The grade using that control is the longitudinal grade. The elevation is applied at the start of the control, then the grade is used to determine the elevations of the controlled point.
Eric, so are you basically saying that your model was pulling the grade from the template and not the point control? (Basically if your template already assigns a grade then you don't need to input a new grade in the point control?)