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Representing Lines that are on top of each other and doing topology

yockee

I have network of lines (water pipes) that spreads out the entire city. Many of the lines are on top of each other.

Questions:

1. How can I represent the lines that are on top of each other (at a point or parallel for some distance) without being regarded as error when I do topology checking ?

2. How to do topology that excludes lines that are on top of each other ? I want to show only Lines that are intersecting each other regarded as error.

Thanks

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JohnAlsup

if lines are in the same domain, I would suggest setting the Z of each vertex so that each stacked line has a different Z.

RichardKoch

In the realm of creating a true "digital twin". If you added Z values to your lines, it would allow them to exist "on top" of one another. Topology should still solve, and all other rules will work as expected. If you had the real Z values that would be the best but even if not, then a uniform and planned addition of them at whatever tolerances you are set for will suffice.

I am unsure if you can have differing Z values per segment without breaking the lines. I would think that in a water system such a break would result in a junction that allowed for sections to be noted differently if you wished them to be.

You could try it on a small section and see if it solves and plan for a larger across the system application if it works.

All the best to you

Richard Koch

JohnAlsup

each vertex can have a different on the same polyline.

JohnBendix

Yeah we have our eletric un set up with z values on the vertices, So for example our Overhead primary is set at 36 (of 36ft) our Secondaries are set at 30 (30ft). And our Underground primary is set at -4 and our secondaries set at -3. That way the Topology see,s them as not being able to intersect. Hope that makes sense.

yockee

how to do this ? thanks

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