How do you calculate acreage in Civil 3D? I know there are ways to find this thru Parcels or some other ways that require having things set up a certain way. But what I am looking for is a fast and simple way to find square feet and acreage of a given figure and/or number of points. It sure would be nice to type Area in the command line and get it but I guess that would be too simple.
A google search resulted in several lisp routines that you might be able to use, depending on which version of ACad you're using.
This link might also be helpful.
Steve, I am not getting anything to come up at http://blog.civil3dreminders.com.
I like the concept though.
When reporting acreage on a survey I like to double check with more than one different method. One method is to quickly hatch the area and look at the properties in the "area" field is always in drawing units. (i.e. U.S. ft area = x sq U.S. feet). I then click the calculator button to further calc the area in acres. I have tested this many time, its fail safe. Hope this helps. BTW don't use the mapcheck report acreage, it only displays the acreage of mapcheck, not true acreage of the vectors.
You mean there isn't a tool to click on closed polylines and report the area, with the option to label and send the results to a table, report, or spread sheet?
I have to wonder what the software designers are thinking.
43560
Just another number in case all else fails...
43560
That is what I would probably do. Copy/Paste the area results into the calculator then divide by 43560 (assuming the drawing units was English).
I'm sure this isn't the answer that was hoped for.
43560
.... (rim shot)
There might be a way to do it for a closed polyline, or Parcel, and get some fancy report. That ain't what Im talking about. Just let me click a few places on my screen and give me an acreage. This is software for engineers and surveyors, right? Autodesk should let folks like me test their stuff to make it idiot-proof before sending it out. Sheez.
If you have a manual transmission and are parked at the top of a hill you could turn the key halfway to the right to the "on" position, put your car in neutral and entice the car to start rolling downhill. Once sufficient velocity was reached you could push in the clutch, put the transmission in low gear and "pop" the clutch which will engage the differential and cause the engine to "turn over" and create ignition. Or at the beginning you could just turn the key all the way to the right to the "start" position i.e. "Parcels".
Wow, so Parcels is actually turn-key simple, Robert? I would have never thunk it coming from Autodesk programming. Perhaps you could enlighten me on how to turn the key to ACRES. It would be much appreciated.
Why not input the point numbers and hit "area", but I know I have old-fashioned
software. Anything short of this is a law suit waiting to happen.
The command line command is "AREA" in Civil3D. You can select points in succession around the area you want or as I usually do select a predrawn polyline.
Command: area
Specify first corner point or [Object/Add area/Subtract area]
Area = 11322.7324, Length = 524.6102
The answer is in drawing units, USft in this example. Then with my handy HP 9s which is always by my side divide by 43560 for acres.
Mack,
Draw a 2D Polyline. Then Analyze Tab >> Inquiry Panel >> Area. That'll give you the area in square feet.
Dave
I like parcels too. Even if you don't have the styles setup you can get the answer to your question.
BONDARY command will draw the polyline for you, just pick an internal point.
(Then get sqft from properties dialog and divide by 43560)
*BOUNDARY command
I just draw a closed polyline, right click and select properties. This gives the area in sq ft. I then use the calculator built in at the command line (just put it in parentheses in polish notation.)
Try it:
( / 500000 43560) to output to the nearest acre
( / 5000000.000 43560) put decimals for better accuracy
Create Parcel (many options - easiest I guess is from a closed polyline)>Toolbox>Parcels>Area_Report
Your Company Name
123 Main Street
Suite #321
City, State 01234
Parcel Area Report Client: Client Company
Project Name: Drawing2.dwg Project Description:
Report Date: 3/18/2014 1:06:51 PM Prepared by: Preparer
Parcel Name Square Feet Acres
Standard : 1 21656.621 0.497 714.933
I would be interested in knowing if any of the commercial cogs/design packages allow for computing the proper area if the project is in SPC with elevation.
I suspect that many routines are simply computing grid area. Correcting the area for average scale factor and elevation to give the normally understood area is not trivial.
This could be critical if there are zoning rules or design criteria that require final parcel to be something like a minimum 5.0000 acres for example.
IF you work with grid data you should probably test this so you know what you are actually getting or reporting.
- -jlw
