Problems with corridor surface when using Barrier

[ArthurADas]

Hi,

Im projecting a viaduct. The roadway that goes up have barriers on it. I'm using a "barrier" and "Top" surface to visualize this segment. If i split this corridor and create a surface only where it has barrier i get the first image, all clean, no problem at all, but when i display the rest of the corridor, with the "top" and "barrier" surface activate, the connection linking the top of my barrier and my pav. creates a graded triangulation surface, and become a mess. 

I already tried different kind of corridor surfaces in order to get a really good boundary that bypasses exactly the shape of my barrier and then goes to the pav, but i couldnt get any good results. 

Any idea how can I get a good surface that follows exactly how the barrier is and then links to the pav. in a vertical surface?? 

*I'm attaching a print showing exactly what is happening

[Jowennl · Accepted solution]

Hi @ArthurADas,

You first need to understand the surface tin creation concept. Tin cannot have same easting and northing with different elevation. Basically if you have vertical drop just add roughly 5 to 10mm transition that looks almost vertical but a tiny offset.

Your sample show that your barrier tries to connect to the nearest point it can find. To solve this I can think of many possible ways. Lets just discuss 2 options for now.

1. Cheat  method by letting the surface find its transition by inserting 2 regions before and after the barrier corridor.

See images below.. (Demo is for flat model to make it easier to show the concept)

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2. Do it properly and create an assembly like Multi Link Trans (MLT) that you can define and add transition properly. Apply the transition before and after as barrier. For further information about MLT please refer to <My AU Class> and please check out objective 2 at 18:50 to 35:45 for concept of MLT and 1:08:30 to 1:10:10 for demo about barrier transition.

Cheers,

Jowenn

[ArthurADas]

Thank you so much for your practical and very detailed answer. I'm taking the first suggestion now only because i'm in a hurry, but im definitely watching your class later to know better about surfaces. Thanks again