Make miscellaneous alignment offsets have the same functionality as center line offsets

[Joe-Bouza]

Admittedly, I do not know why  I even use a miscellaneous alignment. I figured it was a good way to sort them out. But I recently ran into a dilemma using miscellaneous. If I am using them incorrectly let me know

Im working on a street scape where the curb line bumps out and in. I started the design with a center line and two miscellaneous alignments . If you can offset from cl and get all the bumps and curves let me know.

So it was miscellaneous for the curb line. all pretty good so far. The Corridor subs and horizontal decisions dropped in the many feature , rain garden swale, ped ramp crossings, seating , parking bays. some judicious targeting with offset link to surface built the corridor nicely. 

here is where it went wonky. I started with barrier curb then switched to curb and gutter. easy adjust of the subs, but you cannot make a surface profile with the offset alignment. Why?

Cant swith it to center and get the function and I had way too many targets to do over.

Having surface profiles available to miscellaneous alignment offsets , just like center lines would be a good thing

[TimYarris]

Hi @Joe-Bouza.,

Thanks for your idea. Is the issue that you can create offset alignments from misc alignments, but you can't create the corresponding profiles? 

[Joe-Bouza]

Hi @TimYarris  No. you can create a surface profile directly in an offset alignment from centerline type, but cannot do the same with an offset alignment from miscellaneous type.

I know I can use the offset surface profile in the miscellaneous alignment but  it is not part of a profile view of the offset alignment, and you cannot superimpose and offset profile. 

In my specific instance I am controlling the EWT elevation based on a layout profile derived from a surface profile of a 1.5% projection of the existing sidewalk.  It may sound complicated but its not. 

We have to hold existing grade at the back of existing sidewalk. to maintain that I drew alignment along the back of SW  made corridor "1.5 percent" attached assembly with 1.5% generic link that goes just beyond the ETW for each side. ( this is a hidden corridor ) make the surface. paste into an empty and lower it the height of the curb, and bingo that is the needed profile of ETW for all the streetscape between ETW and back of walk to fall into place.

Now, when I had to change from Barrier curb to curb and gutter, the alignment for ETW is now 1-foot away and the flange goes up 1/2 inch and the 1.5% is that much lower this arithmetic can make the adjustment. However, the goal is to use the surface profile to create a layout profile, and I cannot sample or project the 1.5 percent surface to the offset alignment profile view

[TimYarris]

Thanks for clarifying, @Joe-Bouza.