00:09Profiles and some of the functions that will help to create and edit profiles with precision.
00:15Now, Civil 3D allows users to create profiles in a number of ways, and we'll briefly go over
00:20several of these tools and highlight their utility when it comes to road and highway design.
00:26We'll begin by creating an existing ground profile.
00:30Once we've established an alignment, we can select the surface that we want our ground
00:34profile to be based on.
00:35Then we can adjust several of the parameters for the profile view, but for now, we'll choose
00:40most of the default settings.
00:42The profiles in Civil 3D are fully dynamic, meaning if we need to make any changes to the
00:48horizontal alignment, the profile line and profile window update automatically, and this
00:54helps to save time and actually gives us more control.
00:56Using the profile creation tool, we can begin our design profile.
01:01One of the more common methods for creating a design profile is to lay it out by PVI or
01:07by vertical intersections.
01:09In the design window, we can choose the location of the vertical intersection and then add the
01:14vertical curvature.
01:16We can define the vertical curves by length, by radius, or even by k-value, and here we'll input the
01:22initial length of the curve.
01:24And we can easily make revisions to these curves later on in the design process if we need to.
01:30Civil 3D offers several tools to edit profile geometry.
01:35Here we want to add the PVI to our profile, so we do so graphically by selecting the point in
01:40our profile window.
01:41Next, we can add the vertical curve associated with this intersection.
01:45Here we actually want to match the existing ground as much as possible, so we'll use the free curve best
01:52fit command.
01:53We have the option to use either COGA points or entities or by selecting points in the window, and that's
01:59what we'll do in this case.
02:00We'll choose a few points along the existing ground line and then accept those points.
02:04Once we do that, Civil 3D creates a curve based on those points that we've selected.
02:09Now let's go to Profile Layout Parameters so that we can view the geometric details of our profile.
02:17Here, we can actually edit the exact details of our curve by adjusting the station, the elevation, the k-value,
02:24the length of our curve, and several other parameters.
02:27This information is available for any of the PVIs that we select, and any changes that we make in this
02:33window are updated immediately in the Profile window.
02:37We can also edit curves graphically by using the grips associated with each curve.
02:42So once we adjust the beginning or the ending of a curve, the labels are updated automatically.
02:48We can adjust the height or elevation of the profile using the same grip method.
02:53Now when we have fixed points on our profile that we want to maintain, we can edit those profile parameters
02:59as well.
03:00In this case, we adjust the profile grade while maintaining the end elevation and station.
03:07We can also adjust the curve location while maintaining the grade in or out of the curve.
03:13So when we adjust the direction grips, we can move the curve along that same projected profile grade.
03:19And we can do this for either side of the curve.
03:22If we need to remove any curves or points from the profile, we have a few options.
03:27We can select Delete Entity from the Profile tools, then choose the curve we want to delete.
03:32This will return the geometry to just the PVI.
03:36If we want to remove a PVI between the two curves, we can simply choose Delete PVI.
03:41You may also note that if we delete the PVI of a vertical curve, both the curve and the point
03:46will be removed.
03:47Where we have any intersecting alignments, it is good to show the information in the profile view.
03:53Here our south alignment intersects with an access road, and we'd like to show the station location and elevation of
03:59the intersecting alignments in both views.
04:01To do this, we go to the profile view, then choose Add Crossings to Profile View.
04:08We want to select the profile to add, then the profile view where we want to add the crossing label.
04:15Now, we can choose to label any of the profiles associated with the alignments.
04:19In this case, we only want to pick the design profile.
04:23Crossings are added, but I want to adjust the callout by moving the grips.
04:27And in this case, we actually have an extra station label that we don't really need, so I'll delete that
04:31one.
04:34Then we can do the same thing for the other profile window.
04:37We choose the profile and then the destination view.
04:40And in this case, we can label the existing ground and the design profile elevation.
04:46The profile label is positioned at the exact station and elevation of the crossing.
04:51Now, these labels are fully dynamic, so when we make adjustments to the access profile, the labels are updated automatically
04:59in the other view.
05:01And then we can revise that again, and we'll see the labels update when we make that change.
05:06So this gives us the ability to match those points exactly.
05:10In a previous session, we created two offset alignments, and here we're showing the profile for those two offset alignments.
05:16Now, we want to match the profile of the northbound alignment to the southbound alignment.
05:21In order to match the profiles exactly, we will use a superimposed profile.
05:27So to do this, we will select the profile, then superimposed profile.
05:31Similar to other functions, we choose the profile that we want, and then select the profile window to display it.
05:37We can make a few modifications to the display, such as the station range or the accuracy if we need
05:42to,
05:43but we'll use the default settings when we add the profile.
05:46Now, this function automatically creates another profile for the southbound alignment,
05:52and we can actually use that profile when we create our corridor.
05:56Now, if necessary, we can also trace that superimposed profile by laying it out and then adjusting it,
06:04and display it as we would any of our other design profiles.
