AutoCAD Civil 3D General Discussion

Reply
Valued Contributor
david.dixon
Posts: 74
Registered: ‎11-13-2006
Message 11 of 25 (355 Views)

Re: rounding off grades

09-14-2011 11:57 AM in reply to: Joe-Bouza

Contractors follow contour lines drawn on plans also.  Samples available upon request.

David Dixon
Senior Civil Designer

Google+
Valued Contributor
david.dixon
Posts: 74
Registered: ‎11-13-2006
Message 12 of 25 (351 Views)

Re: rounding off grades

09-14-2011 12:13 PM in reply to: david.dixon

I will make my sample available here to the masses to make my point.  See where the curb in this photo was constructed above the level of the sidewalk at the handicap ramp?  Apparently the Contractor followed the errant contour line and not the correct spot elevations on the plans.  I think our model omitted a feature line here but still, it shows that contour lines must be modeled correctly.

 

The Smooth surface edit does not always work perfectly, so we usually have to go back and trace a polyline over that squiggly contour and apply it to the surface as a contour to make it right.  Otherwise, the Contractor may apply undesired "surface roughening" to that area.  You never know what you're going to get, so it needs to be correct on the plan.  Civil 3D grading tools are not always the final answer.  In many cases, the contours still need tweaking. This polyline tracing technique defeats the purpose of having an intelligent model. Do you feel my pain?

Sample Photo 1

David Dixon
Senior Civil Designer

Google+
Valued Contributor
david.dixon
Posts: 74
Registered: ‎11-13-2006
Message 13 of 25 (346 Views)

Re: rounding off grades

09-14-2011 12:38 PM in reply to: david.dixon

another sample of where my lead engineer does not think my 2' x 2' smoothing surface grid edit did not work good enough (highlighted in green).  Will have to trace over the surface generated contours with polylines and reapply them as contours to that surface.....uuggghhhh!!!

 

Sample Photo 2

David Dixon
Senior Civil Designer

Google+
Valued Mentor
ccoles
Posts: 311
Registered: ‎06-26-2007
Message 14 of 25 (344 Views)

Re: rounding off grades

09-14-2011 12:42 PM in reply to: kentanner1346

Getting back to the original question....

 

kentanner, if you're still monitoring this post, I just read a write-up that will help you smooth out the tie-in grades and 'round-out' the contours. Daylight Rounding.

Windows 7 64-bit
HP Z600 8 Gig RAM
Civil 3D 2013
Valued Contributor
david.dixon
Posts: 74
Registered: ‎11-13-2006
Message 15 of 25 (341 Views)

Re: rounding off grades

09-14-2011 12:45 PM in reply to: ccoles

yep. seen that article.  That's for daylighting to a surface within a corridor model.  What if it is not a daylight?

David Dixon
Senior Civil Designer

Google+
Valued Mentor
ccoles
Posts: 311
Registered: ‎06-26-2007
Message 16 of 25 (336 Views)

Re: rounding off grades

09-14-2011 12:50 PM in reply to: david.dixon

Round with hand-modified contours and add to surface, similar to the ditch fix you're showing above. A real pain, and I use the corridors as much as I can to avoid having to do it by hand.

Windows 7 64-bit
HP Z600 8 Gig RAM
Civil 3D 2013
*Expert Elite*
Joe-Bouza
Posts: 4,782
Registered: ‎12-15-2008
Message 17 of 25 (322 Views)

Re: rounding off grades

09-14-2011 04:56 PM in reply to: david.dixon

Hi Dave: Ped- ramps seem to be the ire of designers and builder alike. But when I look at your photo (a gem by the way), I cannot blame c3d, the designer, drafter or the contractor. The blame goes squarely on the shoulders of the inspector and the mason.

 

Ignorance and indifference will make a gold brick drafted design look like crap.

Thank you

Joseph D. Bouza, P.E. (one of 'THOSE' People) Civil 3D 2012 & 2013
HP Z210 Workstation
Intel Xeon CPU E31240 @ 3.30 Hz
12 GB Ram


Note: Its all Resistentialism, so keep calm and carry on

64 Bit Win7 OS
Valued Contributor
david.dixon
Posts: 74
Registered: ‎11-13-2006
Message 18 of 25 (303 Views)

Re: rounding off grades

09-15-2011 05:17 AM in reply to: Joe-Bouza

I agree with you whole-heartedly Joe! thanks :smileyhappy:

David Dixon
Senior Civil Designer

Google+
*Expert Elite*
jmayo
Posts: 2,744
Registered: ‎11-13-2006
Message 19 of 25 (295 Views)

Re: rounding off grades

09-15-2011 06:26 AM in reply to: Joe-Bouza

Agreed. Whoever put the curb in, or builds a road from contours should not be hired again. :smileywink:

John Mayo, PE
IDSP 2014
Win 7 64, Xeon ES165@3.2Ghz,
64 GB RAM, Quadro K4000 (x2)
*Expert Elite*
Joe-Bouza
Posts: 4,782
Registered: ‎12-15-2008
Message 20 of 25 (288 Views)

Re: rounding off grades

09-15-2011 06:57 AM in reply to: jmayo

The mason was out to lunch :smileyvery-happy:

Thank you

Joseph D. Bouza, P.E. (one of 'THOSE' People) Civil 3D 2012 & 2013
HP Z210 Workstation
Intel Xeon CPU E31240 @ 3.30 Hz
12 GB Ram


Note: Its all Resistentialism, so keep calm and carry on

64 Bit Win7 OS

You are not logged in.

Log into access your profile, ask and answer questions, share ideas and more. Haven't signed up yet? Register

Announcements
Are you familiar with the Autodesk Expert Elites? The Expert Elite program is made up of customers that help other customers by sharing knowledge and exemplifying an engaging style of collaboration. To learn more, please visit our Expert Elite website.

Need installation help?

Start with some of our most frequented solutions to get help installing your software.

Ask the Community


Civil 3D Exchange Apps

Created by the community for the community, Autodesk Exchange Apps for AutoCAD Civil 3D helps you achieve greater speed, accuracy, and automation from concept to manufacturing.

Connect with Civil 3D

Twitter

Facebook

Blogs