Gotchya. Yes, I like utilities as networks due to the Interference capabilities and Profile projection capabilities.
How many road crossings? I think it would be worth it to quickly edit those in through the Pipe Network editor for the productivity reasons above.
Okay so here is what I think will work best for me here.........
I drew in a polyline along my utility. In this case it some communications lines. I used the grading function to get elevations from my existing surface model. I then lowered that line 3' below the surface. Next thing I did was use the "delete pi" commanding in grading to get rid of probably 2/3 of the pi's. This left me with about 5-6 segments. I then created a pipe network from that line and it gave me 5-6 pipes. I drew those into the profile view and then just turned off all the pipes except the one that actually crosses my centerline. Seems to be pretty close.
I thought about just doeing 5' either side of the centerline and calling it good but our new sewer is 15' off centerline and I want to see any potential conflicts down the way with utilities so I wanted to draw in the utilities that far out.
the only time we need to show existing utilities is in the cross sections. so i do the polyline thing but i draw from the cross section sample line/utility line intersection. that gives pipe lengths of 50' (assuming your sample lines are 50'). i convert that polyline to a feature line with elevations only at the verticies. drop it the required depth and then convert to a pipe. it creates null structures at each intersection which i erase. i have pipe styles set up for each utility. it works pretty well and doesn't use too many resources.
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