In this post I wanted to report on a subtle new feature of Civil 3D 2015 that (if you're like me) may have gone unnoticed. It has to do with the way Civil 3D computes the areas of pay items associated with corridors. Starting in Civil 3D 2015, pay items tied to areas defined by corridor links are computed (by default) in 3D. This improvement can be very helpful when quantifying items such as sod, seeding, mulch, erosion blanket, etc.
First we'll look at the setting that controls the computation of pay item areas…
Within the Toolspace Settings Tab, expand the Quantity Takeoff group, and then the Commands group. Rt-Click on the TakeOff command and select "Edit Command Settings" from the pop-up menu.
In the “Edit Command Settings” dialog box, expand “Compute Takeoff Options” and notice the "Computation Type” setting is 3D. It's important to note that this setting controls both length AND area computations. That being said, 3D area computations apply to corridors only, the setting does not apply to other Civil 3D objects.
Next, let's use the feature in a practical example...
Let's assume we need to calculate the amount of erosion control blanket necessary for a proposed roadway design. Start by opening a drawing containing a corridor that daylights to an existing surface. This drawing should also have an assigned pay item file.
[For my example, I'm using the "GettingStarted.csv" pay item file included with the Civil 3D installation. - To assign this file to a drawing, visit the Analyze ribbon tab and click the QTO Manager icon found within the QTO panel. Use the "open" icon in the upper left corner of the dialog box to select the GettingStarted.csv file. You'll find it in Getting Started folder within the Pay Item Data directory.]
Next we'll assign an erosion control pay item to the corridor daylight link. (We’ll also assign a fill style to the link such that the erosion control blanket is displayed in the drawing.) Select the corridor and choose “Corridor Properties” from the ribbon. In the Corridor Properties dialog box, select the “Codes” tab. At the top of this tab, you’ll find the Code Set Style assigned to the corridor. (In my example the corridor uses the “All Codes” code set style.)
We’ll assign the pay item and fill style by editing the All Codes code set style. To edit the style, click the “edit” button (looks like a blue square with a pencil.) In the Code Set Style dialog box, expand the Link category and scroll down till you find the Daylight link code. Click in the Material Area Fill Style column followed by the Pay Item icon to assign your desired settings. In my example, I chose a “Grass Hatch” fill style, and the 62901-0000 (Rolled Erosion Control Product) Pay Item.
When finished, click OK to close all open dialog boxes.
Finally we’ll compute the area of the erosion control blanket...
To do this, visit the Analyze ribbon tab and click the Takeoff icon found in the QTO panel. In the Compute Quantity Takeoff dialog box, accept the defaults and click the Compute button.
By default, the quantity report is displayed as an .XML document. To make the report easier to read, open the report menu in the lower left corner and select the .TXT version.
And thats it! The erosion control blanket square yardage represents a 3D area which in most cases is the desirable measurement for this type of installation. By adding this subtle improvement, Civil 3D 2015 makes it even easier to extract accurate quantities from your corridor models.