AutoCAD Civil 3D General Discussion

AutoCAD Civil 3D General Discussion

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jeff_rivers
Posts: 157
Registered: ‎07-28-2009
Message 21 of 44 (291 Views)

Re: Tiered wall assembly

04-10-2012 10:59 AM in reply to: Neilw

What kind of wall is it, Neil, and how will the corners be constructed in the field?

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Neilw
Posts: 2,341
Registered: ‎09-04-2006
Message 22 of 44 (290 Views)

Re: Tiered wall assembly

04-10-2012 11:09 AM in reply to: jeff_rivers

I'm not sure if it is a poured wall or a cmu block wall at this time Jeff, but one or the other.

Neil Wilson (a.k.a. neilw)
Infrastructure Suite/C3D 2013, LDT 2004, Power Civil v8i SS1
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jeff_rivers
Posts: 157
Registered: ‎07-28-2009
Message 23 of 44 (282 Views)

Re: Tiered wall assembly

04-10-2012 11:40 AM in reply to: jeff_rivers

I've had good success modeling walls by making one pass with a simple assembly using links (width & slope) to find the top or the toe, then creating an alignment and profile along that top (or toe) and using them as targets for a more complex wall assembly. 

 

It's true as you noted that you must manually adjust the profile (or profiles, in your case) to accurately model the tops of the benches, but it will give you fine control to determine where to end each bench. 

 

The profile also will yield the total square footage of the wall.  You can model the embedment the same way, and then get excavation quantities (I had to account for wall ex separately from the roadway ex). 

 

In my case it was a block wall, so I had my final top-of-wall profiles step up and down to follow each course as the wall grew taller.  I adjusted the profiles manually up-or-down one block height to get nice daylights that stayed within RW.  The final corridor daylighted nicely, and the actual wall, when built, matched the design very well.

 

The one problem spot was the angle point.  For the most part all the walls followed a fairly straight line except one, which had an angle point.  In the field, they constructed a closure pour to fill in the gap.  Will that be true in your case?  If so, perhaps you do not need to model exactly what's going on at the angle points.  Create your proposed profiles for the bench tops, adjust them to daylight at reasonable distances, and, extract your cut lines.

 

 

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BrianHailey
Posts: 2,868
Registered: ‎04-27-2005
Message 24 of 44 (276 Views)

Re: Tiered wall assembly

04-10-2012 12:04 PM in reply to: Neilw

If you know the ins and outs of the software, it's not that hard to do. Adjusted your corridor over about 20 minutes.

 

http://screencast.com/t/k8Q2R6gE0VHX

Brian Hailey
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Neilw
Posts: 2,341
Registered: ‎09-04-2006
Message 25 of 44 (272 Views)

Re: Tiered wall assembly

04-10-2012 12:22 PM in reply to: BrianHailey

It looks good Brian. What is the secret?

Neil Wilson (a.k.a. neilw)
Infrastructure Suite/C3D 2013, LDT 2004, Power Civil v8i SS1
WIN 7 64 PRO
HP Pavillion h8xt, i7 2600, 12 GB
RADEON 6450, 1 GB
http://www.sec-landmgt.com
*Expert Elite*
BrianHailey
Posts: 2,868
Registered: ‎04-27-2005
Message 26 of 44 (263 Views)

Re: Tiered wall assembly

04-10-2012 01:46 PM in reply to: Neilw

First of all, miniture curves on the alignment (edit alignment geometry). Second, multiple regions with different sampling increments (inside curves have no automatic sampled lines). Third, add manual sections where they need to have additional control (frequency, add manual stations). Fourth, edit the sections manually at the angle points so they continue to have one angle point (section editor).

Brian Hailey
CAD-1.com
My Blog
Valued Contributor
907Trekker
Posts: 69
Registered: ‎10-28-2009
Message 27 of 44 (252 Views)

Re: Tiered wall assembly

04-10-2012 02:29 PM in reply to: BrianHailey

I was thinking about that, but did you adjust the grade of the two inside lines to something other than 2% so there isn't a bump in the grade?  The new grade would depend on the angle so each would need to be calculated.  Also it would cause issues if you wanted more sample lines. See attached.

 

I'm not sure if we are trying to achieve that level of accuracy though.

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Neilw
Posts: 2,341
Registered: ‎09-04-2006
Message 28 of 44 (247 Views)

Re: Tiered wall assembly

04-10-2012 02:53 PM in reply to: 907Trekker

It looks like you guys are closing in with the fillets. When you get the bugs worked out can you post the design file for evaluation?

Neil Wilson (a.k.a. neilw)
Infrastructure Suite/C3D 2013, LDT 2004, Power Civil v8i SS1
WIN 7 64 PRO
HP Pavillion h8xt, i7 2600, 12 GB
RADEON 6450, 1 GB
http://www.sec-landmgt.com
Valued Contributor
907Trekker
Posts: 69
Registered: ‎10-28-2009
Message 29 of 44 (237 Views)

Re: Tiered wall assembly

04-10-2012 05:38 PM in reply to: Neilw

Neil,

 

Any chance that you could upload the existing grade, or at least a portion of it in this area?   Possibly export it to a land xml. 

 

Thanks,
Mark

 

 

 

 

Valued Contributor
907Trekker
Posts: 69
Registered: ‎10-28-2009
Message 30 of 44 (235 Views)

Re: Tiered wall assembly

04-10-2012 05:40 PM in reply to: Neilw

Nevermind, I'm sorry.. I see it now.

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