Query on surfaces and drainage

[rdavisMX6RG]

Hi,

I am doing a large site where there are new houses but, as it is built on a typical "ski-slope" site, a lot of existing site is being retained also.

My drainage routes mainly go down the Spine road (SP_Rd1 Surface) but, in parts, turns off-road and will be dug into the existing ground (EG Topo surface), mainly between cul-de-sac clusters.

For my profile, am I best to have my roads, main road and all cul-de-sacs, as surfaces and paste them all, together with the EG Topo, into a new Surface (Composite surface) and work from that?  If I do this, can I also have my EG Topo as a profile as I will need to show cut and fill values for the new roads?

Or am I totally overthinking the process?

I am finding every time I think I have mastered C3D, it keeps throwing a curveball to send me down rabbit holes on u-tube tutorials......

[brian.strandberg · Accepted solution]

I'm not certain from your post what exactly what the question is.  That being said, I will usually have an EG, FG and EG-FG composite surface.  The latter I will use for a target surface in my pipe networks.  Most of my CB's will probably be in the FG Surface, but if one is in the EG surface it will have no difficulty targeting the composite surface.

Does this help?

[rdavisMX6RG]

Brian,

Yes. Kinda what I was trying to explain tbh. I was over complicating it myself with trying to have too many surfaces without the actual Composite, which basically should be my final target surface.

To ask a stupid question, what is "CB" as you refer to??