I can't say there is NO way to do it with a corridor, but even if there is, when you consider the amount of setup and the complexity involved in managing and manipulating it, at some point you have to pause and ask: is it really practical to do grading that way? For larger sites it would get really hairy.
How simple it would be if gradings could handle mitered corners.
I hope you don't design roads. General rule of thumb is to not have driveway cross slopes change to avoid havnig storm water run across the pavement and cause accidents.
Unfortunately, Ann, I believe you missed the entire question altogether. It's also unfortunate that you make a derogatory comment about another professional with so little information about them.
But thanks for your interest.
The intent was to be more joking around than critical.
I do get scared with a lot of not seeing the forest for the trees in a lot of the newer design.
I also get scared when I see designs that miss the concept that water doesn't flow up hill and a lot of poorly desinged roads in this area that are accidents waiting to happen from water flowing across the road.
I just had to do a review of a detention design that was approved by a kind older reviewing engineer. The basin had essentially been designed with two oultets as one of the inlets supposedly flowing into the basin had a top of frame elevation less than half way up the berm. The scarey thing is I see this about every couple years.
This makes me nervous about stormwater issues.
that is a grading.
No issue here. Nielw said gradings cant handle mitered corners...
<snip> Gradings are unstable and prone to corruption and crashing. Also they are so slow to process that I hate using them. Too gradings cannot handle mitered corners so if you have mitered curbs with sidewalks you can't model them with gradings.
My image shows a grading of a sidewalk an curbs with a mitered corner. I know the corner will never be 2%.
I'm trying to understand why NW sees miters not doable with a grading.
Neil, My earlier post shows (what I think is) a mitered corner and I used a grading to do it. Where do you see a problem? can you provide an example?
To Para phrase the grateful dead..... If the thunder doesn't get you then the lightning will.
Old habits die hard.
Ok Joe, Neil
What the hell lets keep this discussion going grading best practice ideas and jump to the end of the grading process.
I find mostly that a small jobs mean small budgets and other consultants not using Autocad
What do we give back to the them at the end if they are not using autocad, but can take a dwg exploded featurelines as 2d or 3d polyines is the only option I see?
I posted thoughts on a process I used today here
Any best practices ideas thoughts
How did you make that mitered corner Joe? In my screen cap I created gradings from an edge of pavement featureline outward to the sidewalk. First I add the gutter, then face of curb, back of curb and sidewalk. Did you perhaps start at the back of sidewalk and grade inwards toward the pavement? That might work in that scenario, but inevitably you'll have to go the other direction. What happens if you do that?
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