old & new pipe network parts in same location

[annw2]

How do you go about creating a pipe network for the old and new parts to be in the same location?

We need to replace a sanitary sewer line.  The beginning 2 manholes & pipe will be in the exact same location as the old one.

The ending pipe will be in the same location.  It will vary in the middle.

I don't think you can have two model objects in the same location.

How would we set this up?

[chriscowgill7373 · Accepted solution]

Really you only have two options, either have a separate proposed network,  or replace the existing information with new pipes and structures.  the way we do it is to have an existing pipe network,  and a proposed network, which contains all the existing, with the proposed information as part of the same network.

[Anonymous · Accepted solution]

Further to what Chris has mentioned:

This approach may seem like a redundant method and could be confusing at first, but it will be useful on many levels.

1. Having a copy of the existing network to start with, will allow you to make the changes to what will ultimately be your final design network

2. There will be no confusion as to what is new and what is existing

3. You will be able to apply separate labelling styles to each networkand

4. You will be able to control the visibility for production drawings as well

Try to remember this bit of logic:

C3D projects are best configured with many layers/levels of data (ie. surfaces, profiles, pipe networks etc).

When the project has been sitting untouched for several months to a year, and you return to it, finding where you left off will be that much easier.

...good luck designing

cheers,

[Cadguru42]

I place all proposed pipe and pressure networks in their own network. If I need to model the existing I'll put them on their own network. Keeping proposed and existing separate helps with many aspects, such as showing crossing pipes in profile, conflicts, layering, labeling, etc. 

[Joe-Bouza · Accepted solution]

Serendipitous! I am currently doing the same thing. One network with Existing and proposed parts. The proposed parts replacing existing part will have the editorial in the description.

[annw2]

Really, the question was if you could have an existing & proposed objects in the same location without the computer crashing

[Anonymous]

Ann:

I read your initial post. There is no mention of crashing.

Are you concerned with crashing?

And to answer the other part of the question.

Yes you can have as many objects as you like, on top of each other.

This has been a staple of autocad for as long as I can remember. Multiple polylines on top of polylines. Blocks on top of blocks.

and of course multiple pipe networks on top of other pipe networks.

A good example would be several iterations or OPTIONS for a design (assuming you have the budget for that). 

Good luck...designing

cheers,

[annw2]

I thought the pipe networks had functions to check and prevent pipes from crossing or being in the same location.

As for crashing, I had the storm sewer design file crash twice yesterday when I went to move an alignment.  This is after we got it back after it locking up before.

I had a fatal error this morning plotting a profile from model space as a sketch. 2016.

[Joe-Bouza]

The interference check is just that a check. It lets you know where and if two or more network cross too close per specification. It does not prevent you from drawing

[Anonymous]

C3D can be temperamental at times. I've experienced the same issues you've mentioned, as well as many others.

On any given day, I can be working away and then all of a sudden, my C3D (or Vanilla Autocad) locks up...and crashes.

On occasion, models will and do become corrupt. This can be due to complicated data shortcuts, complicated data in the drawing, or it can also be linked to external objects that have been added to the drawing. I know we use many different data sources when building a project from the ground up. It is difficult to find the source of crashing sometimes. 

A good rule of thumb; save often.

I would suggest keeping a log of issues that you find might be causing the crashing. 

Try to write down what you were doing when it happened.

If it becomes a reoccurring problem, that might need to be addressed by Autodesk.

good luck...designing

cheers,

[annw2]

From our CAD guru, it was likely hatching lines from an XREF that corrupted the storm sewer file.