Existing Storm & Sanitary Model?
What the surveyor delivers is up to the proposal scope. If they were scoped to build then yes. I typically split and merge the segment directly associated with the new work.
Joe Bouza
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Personally, I would copy the existing network and strip out the parts that are not involved. set the structure and pipe styles not to plot>> call it proposed and add new pipe and structures to it
Joe Bouza
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Of course you can just add to the existing network with proposed styles.
Be cautious of locking the inverts at the existing connection point from inadvertently moving
Joe Bouza
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In the past, I have had to create the 3d model for existing utilities. To resolve your second question, I always create the existing, then make a copy of it, and make that into my proposed, demoing what is demo'd and adding the new directly to it. In my opinion, that creates the least amount of work, as typically we want to see existing and proposed inverts in the structures that tie the systems together. The only other way is to create dummy segments that have the proper size and elevation. But at that point, if you already had it created for the existing system, it is extra work, that in my opinion provides no benefit.
Christopher T. Cowgill, P.E.
AutoCAD Certified Professional
Civil 3D Certified Professional
Civil 3D 2024 on Windows 10
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