AutoCAD Civil 3D General Discussion

AutoCAD Civil 3D General Discussion

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Mentor
mfernandes
Posts: 194
Registered: ‎08-21-2007
Message 1 of 4 (125 Views)

spanning pipes design

125 Views, 3 Replies
02-18-2014 08:29 PM

workflow for spanning pipes

I have two manholes with null structure between.

 

MH1==================null==================null===================MH2

 

1. would like to hold inverts at MH1 and MH2 and let C3D calculate the slope.

2. would like to hold invert at MH1 and set the slope and let C3D calculate and set the invert through to MH2

3. would like to hold invert at MH2 and set the slope and let C3D calculate and set the invert through to MH1

 

any ideas?

 

*Expert Elite*
wfberry
Posts: 1,844
Registered: ‎09-05-2006
Message 2 of 4 (88 Views)

Re: spanning pipes design

02-20-2014 07:22 AM in reply to: mfernandes

I have found over the years that it is MUCH easier to have an alignment for a sewer line.  Using  a Final Grade profile along your pipe invert line makes pipes so much easier.  You can control the grade and elevations using the tools for managing profiles.  When you get things (your profile) like you want, just drag your pipes into place.

 

Bill

 

 

Mentor
mfernandes
Posts: 194
Registered: ‎08-21-2007
Message 3 of 4 (58 Views)

Re: spanning pipes design

03-11-2014 12:16 PM in reply to: wfberry

That is great in the prelim stages or just for drafting the design. But after the initial design, when changes are required we need some robust tools.

 

The other issue is as Null structures are a necessary evil.

They have to exist to tie your network together. How do you set them up so that there is no invert drop between pipes?

 

Mentor
mikepo
Posts: 239
Registered: ‎04-29-2008
Message 4 of 4 (31 Views)

Re: spanning pipes design

05-09-2014 10:53 AM in reply to: mfernandes

In Exchange Apps store there is an app called Slope across Pipes. It's the best $25 we've ever spent. Makes designing gravity pipe networks a breeze.

Mike Porter
www.ppeng.com
Civil3D 2014 SP2
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