Using Slopes in Earthwork Calculations?
Using Slopes in Earthwork Calculations?
(OP)
I am working with pre and post-dredge data, and need to run calculations between the two surfaces. This project is using a 3:1 slope at the dredge boundaries, and I was wondering if Terramodel can work with specs like this? In the Earthwork Settings, I do not see anything regarding slopes, etc. Maybe this is elsewhere?
For calculations I also use Surfer, but it does not allow the use of slopes and only refers to 'box cut' between surfaces. If Terramodel is not capable of using slopes, are there any recommended programs (besides Civil 3D) out there?
Thanks for your time. Much appreciated.
DP
For calculations I also use Surfer, but it does not allow the use of slopes and only refers to 'box cut' between surfaces. If Terramodel is not capable of using slopes, are there any recommended programs (besides Civil 3D) out there?
Thanks for your time. Much appreciated.
DP





RE: Using Slopes in Earthwork Calculations?
Yes, Civil 3D will do your grading for you fairly simply, but apparently so will Geopak Site Modeler (which is also now in InRoads V8i). I'm fairly sure Carson Civil could do it.
If you already have Terramodel, give Trimble a call or email their tech support. http://www.trimble.com/tkn/
RE: Using Slopes in Earthwork Calculations?
RE: Using Slopes in Earthwork Calculations?
I'm am not sure how to go about manually creating the slopes, but I can look into that. Also, I have not paid for the preferred support from Trimble. Which is why I'm here.
From what I can tell, it seems that most programs that allow surface comparisons only allow a box cut (Surfer, Terramodel, Global Mapper). Civil 3D allows slopes, but it also costs a pretty penny (I'm a one man business). I have Map 3D, but I think that Autodesk no longer allows a break in the cost when upgrading. I left them a message yesterday. If I 'have' to get Civil 3D, then so be it. I would just like to see what else is out there, since Map 3D provides pretty much everything that I normally need.
I will take a look at the programs you mentioned. And thanks again for the reply.
Have a good one,
DP
RE: Using Slopes in Earthwork Calculations?
RE: Using Slopes in Earthwork Calculations?
If you set up the roadway, you can actually calculate average end volumes, or you can create a dtm for the finish surface, and then run dtm volumes between the surfaces. If you use the sideslope command, you will have to run the dtm volume report.
Hope this information helps.
RE: Using Slopes in Earthwork Calculations?
It's also fairly easy to do this sort of thing by hand as BigH spells out. It'd take a talented cad tech with ACAD Map 3D half a day to a full day to do, presuming the level of accuracy you need is reasonable.
Hydrology, Drainage Analysis, Flood Studies, and Complex Stormwater Litigation for Atlanta and the South East - http://www.campbellcivil.com
RE: Using Slopes in Earthwork Calculations?
To manually add in the side slope you draw in your proposed contours by offsetting them the required horizontal distance for the contour interval (so 6 ft for 2-ft interval) and then add the contours to your proposed grade surface. It's not as elegant as GRunyon11's method, but is quick & dirty.
RE: Using Slopes in Earthwork Calculations?
I have decided to just upgrade to Civil 3D, since I know it is capable of doing what I need for these various dredging projects (and Autodesk did allow a bit of a break in cost). Now, how to do the slopes in 3D? Thanks another question...but I'll figure it out once the program is in hand. I may end up back in these forums though.
Thanks again.
DP
RE: Using Slopes in Earthwork Calculations?
RE: Using Slopes in Earthwork Calculations?
RE: Using Slopes in Earthwork Calculations?