Go: An Introduction into Grading Optimization for Civil 3d

CHRISTOPHER HINKLEY: Hello, everyone. My name is Chris Hinkley. And I will be giving you the presentation today on grading optimization. This is going to be an introduction to grading optimization.

A little bit about myself. I'm currently the civil design group manager here at Wright-Pierce. I manage workloads, project coordination between the water and wastewater groups. I dole out the training. I help out our CAD BIM manager with software upgrades.

I'm also a Part 107 drone pilot. I'm also fully immersed in the Autodesk community, Civil Futures, InfraWorks Customer Council, Land Development Customer Counsel, and End of Sprint demos with grading optimization and pressure networks. I've been in the industry for 20 years now, 16 with Wright-Pierce, and love every minute of it.

Some learning objectives for today's presentation. We're going to learn the basics of grading optimization. We're going to learn how to assign 2D objects to grading objects. We're going to learn how to adjust the grading optimization settings parameters before running optimization for ideal output. And then we're going to learn how to export those features generated from the grading optimization back into Civil 3D for your design.

This is not a PowerPoint presentation so we're going to get into some technical instruction and get hands on in the product. All right. So first off, we are utilizing Civil 3D 2023. And as you can see, I've got some proposed conditions.

But in order to run grading optimization, if you come up here in your Home tab, you'll see this Grading Optimization button. If you select that, it'll bring it up, Grading Optimization installed. You can go to Analyze, Grading Optimization to find it. And it gives you some bullets right here. Assign grading constraints, generate grading options, and deliver balanced grading plans.

So those are some of the things that-- this is what you'll see if Grading Optimization is installed. If it's not installed, it'll tell you you need to go install it. If you have the AEC collection, then you should be able to come down here to your Autodesk Manage tab, and then go into All Products and Services, and search by typing in grading.

And as you can see here, Grading Optimization is available, 2023, 2022, Windows 64, English. So you should be able to see it here. Another option is to go to your Autodesk desktop app. And if you type in search and we type in grading, there's an update.

As we can see here, there's an update for C3D2023.1 that is not installed. We're not going to do that at this point in time. But those are a couple of options for you if you do not have grading optimization installed. If you have the AEC collection, you will see it in those two products.

All right. So we do have it. So if I select-- if I go to my Analyze tab and I select Grading Objects, you'll see that the Grading Objects palette shows up. We've got, on the left hand side here, the Grading Objects palette shows up. We can move it, adjust it. And we also have the tool palette. So you've got your browser and your tool palette.

And up here to the right, I have my 2D design. This is a project example we used in the webinar, the most recent webinar we did with Autodesk to show from a customer's perspective. So what we're going to do is going to get started into assigning these 2D polylines. So we've got a parking lot here, it's a 2D polyline, a building pad, a future building pad, a couple of pathways, some grading limits, and a detention pond.

So we've got some features. We've got some curbing as well in here. And we will be assigning those features. So if you look up here into your tool palettes, you'll notice you've got features such as a building pad, a reveal, a pond, retaining wall. You've got curbs, parking lots, sidewalk, an accessible path, zone, exclusion zone, grading limit, aligned edge, bend line, low point, bounded point, offset points, and drain line.

So for this particular example, we're going to dive in and we will select Building Pad. And then as you can see in your command prompt down below, it's going to ask you to select a building pad. So we'll select it. Hit Enter. Ooh. Sorry.

So we selected our object as building pad. If you come over here, you can see that we've got the building pad selected. And down below here-- so once you've selected the building pad, it'll bring up the properties of that building pad. So we can call it restroom. We don't have a current elevation for it or a finished floor elevation so we're going to leave that unchecked.

We're going to leave the-- we want the ground level with the grading pad at the moment. So we turn that on. And depth of material. We're going to call it a foot and a half. Going to do the same thing for this future building pad. We'll call it the future building. There isn't an elevation we have associated with it yet so we leave that unchecked.

If you click on these infos, it gives you some little tidbits. So you've got elevation. There's an info button. You can specify the elevation range or the final optimized building pad. Level grading pad. Create a smooth grading around the pad footprint. Reveal segments. Override this setting. So next to each one there's a little info button. It gives you a little tidbit as to what it's about.

All right. So this is the Building Reveal tool. The reveal tool is used to delineate a desired reveal along the edge of a building pad. A reveal can only be added to a building and pad object. The reveal tool adds properties to the building pad that indicate the minimum/maximum desired elevation difference between the building pad elevation and the surrounding terrain surface.

So if you wanted to have a 6 inch lip all the way around the building or a 3 inch lip all the way around the building, you could select the tool. And it'll select the building pad. And you can select the point to start and end. Hit Enter. And now we have the properties of the reveal.

And you can go on and specify that reveal. I don't think it worked. I don't think it worked quite that time. So let's come here. And we want a 3 inch lip from here to here. So minimum difference we want 0.25. Max difference we want 6 inch, so 0.5. And then we'll call it restroom reveal. Hit Enter. We should be good to go.

All right. Now we've got a pond. So down here we've got our pond. Select our pond. Hit enter. So this is an under drain soil filter so we're going to-- so dry pond, minimum storage is 2,500 cubic feet.

Storage depth go 3 feet. Allow the boundary to change. That's selected on. We're going to select it off. We don't want it to change. And in here, you've got a bunch of letters that correspond with the berm and/or the pond detail.

So right here where the berm is A, that's our berm width. We're going to go 3 feet. Free board. We're going to go 0.56 inches. And the inside slope we're going to go at a three to one. We'll change that to a two to one. All right. So that's set.

Retaining walls. We don't have a retaining wall currently in this project but a retaining wall breaks the terrain along the linework and steps the terrain within the specified height constraints. So as an example, we're going to select the retaining wall. And then we'll select the inside of the-- we'll select this yellow line here. Hit Enter.

So as you can see, with the retaining wall, the face is out here. And you can reverse it. If you look here, you can reverse the face in the back side of the retaining wall, what to display. You can define the min/max height of the retaining wall. And you could name it as well. So there's a few things you can do with the retaining wall. We are actually not using that so we'll remove it.

Curb. But we do have some curb on the project. So if I come up here to curb, I'm going to add curb one. So I call it GOcurb1. My specified height is 6 inches. So if you look up here, that's A. That's the reveal. So we'll have 0.5 and a width of 6 inches, 0.5, which is your B up here. We'll hit OK.

As you can see, the shaded area is the back of the curb so we want to reverse that. Right now it's showing the back of the curb at the front face, where we would like the front face to be. So we're going to go to reverse curb.

And as you can see, the shading is pulled to the back side of the curb. That's what you want when-- you want the shading on the back side of the curb if you want the north side to have the reveal. If you want the south side to have the reveal, you can reverse the curb. So we want the north side with the curb reveal. The shading is behind it on the south side.

We keep moving forward. We have one more piece of curve up here in northeast corner. So Curb. Select this piece of curb. And as you can see here, the shading is on the east side, which is what we want. So call it GOcurb2. So we get a height of 0.5 for the reveal and a width of 6 inches as well.

All right. So here we've got a parking lot. So we're going to define our parking lot. This is our overall green line outline. Hit enter. So we'll call this parking lot.

All right. So customized slope constraints. So we want a minimum slope across the parking lot at 1%, a max slope of 5%. We don't need as an aligned edge which requires the triangles in the zone to align themselves on a plane. This property cannot be combined with exclusive drainage. So we are defining this as exclusive drainage so you're not able to define the aligned surface.

We do want it to be a break line. And we do not need it to be a grading limit. And under here, Follow Global Grading Objectives, you can balance cut fill, minimize earthwork, and smooth surface. Those are all checked on. So we hit Escape.

Sidewalk. We don't have any sidewalks but a sidewalk is a pre-configured zone where the slopes are set for a walkway. An access path is a pre-configured zone where the slope settings correspond to handicap accessible requirements.

I retract that statement. We do have a couple of walkways that we're going to define as sidewalks. So if we select sidewalk, we're going to come up here and select this path. Hit Enter. Call it Path1.

If you come down here, we want a minimum drain slope of one, a max of 5%. Drainage. Aligned surface. We do not want that at the moment. Exclusive drainage. That's unchecked. But we do have minimum drain inclination. What that means is that every triangle on the surface has minimum required inclination into given slope.

If checked, this option will result in the zone inclines towards the designated direction of flow. So then we're going to define the direction of inclination. So by doing that, the zone will slope towards an angle in degrees. The angle is counterclockwise from 0 direction x-axis relative to world coordinate system.

So here we'll just set it to five, five degrees. Depth of material 3/4 of an inch. Break line. We do want this to be a break line. It's not going to be a grading limit. And we're going to leave the cut field balance to minimize earthwork and smooth surface on.

Once again, we've got another sidewalk here we're going to define. Hit Enter. We'll leave all the same parameters. We'll call it Path2. Minimum drain slope 1%, max 5%. We've got a drainage inclination. We'll change that to five degrees. And we'll hit close.

All right. So exclusion zone. We don't have any of these in this project but an exclusion zone, if you hover over it, it will give us all the existing elevations are fixed so that no grading is allowed to happen. So if you had an area where you wanted to make sure that the existing grades stayed the same, maybe this island for instance, where you didn't want to adjust existing grade, you could then add that as an exclusion zone and it won't touch anything inside the island.

Grading limit. We do have our grading limits. And it's defined by the edge of pavement here, and the right of way line, and the roadway right of way. So this is an access road to the top of the mountain. We've got the right of way on the east side. And we don't want to grade anything inside the right of way where the roadway is.

Same thing to the south. We're using the road right of way as our grading limit. And to the north, we're using where the path connects in because we want to make sure our existing path connects in. So we're going to select this closed polyline. Hit enter.

We're just going to call it grading limit, GOGradingLimit. We have a minimum drain slope of 2%, max of three to one or 33%. We're not checking off any of the aligned surfaces, the exclusion drainage, or the min drainage inclination. We want to make sure this is checked on, the grading limit. Once again, all these will be checked on-- the cut field balance, the minimize earth work, and the smooth surface. OK.

So let's keep going down the list here. Aligned edge. We don't have a defined lined edge. But an aligned edge attempts to create a well defined surface geometry along a constant slope. Surface triangles, triangle edges that touch an aligned edge will attempt to align in the same direction or slope.

We've got bend lines. A bend line attempts to relax the slope of surface triangles along the line. Surface triangle edges that touch a bend line will be set to a minimum slope of 0 and a max slope elevation of infinity.

We've got low points. As you can see, if you had a low point on the project where in the island we had some catchment or on this side we had some more catchment, wanted to define some low points for a catch basin, you could put them in their survey points and define them from there.

Bounded point. Basically, instead of a grading limit, I could put two bounded points here with elevations from my existing surface so that way we could attach or match in this proposed grade into the existing grade and it wouldn't affect the slopes on the north side.

Offset points. We don't have any in this project either but, if we hover, an offset point controls the elevation difference between each end of the line segment. A positive value for the offset points tries to keep the first point higher than the end of the segment. A negative value forces the start point to be lower.

And then you've got drain lines. Drain lines are elements that control the slope direction of the triangles when assigning. When assigning drain lines, the start of the line is the high point of the direction of the line as it goes towards the end, which is the low point.

So we've got all our grading objects defined. And you can see the grading objects in the browser. You've got your building pad. You get two-- and with the restroom, you've actually got the restroom reveal. And on this backside, we've got a minimum reveal, 6 inches max. Minimum, sorry, 3 inches. Max 6 inches.

We've got a pond. Under drain soil filter. Sorry. We've got no retaining walls. We've got two curbs. Curb one. Can see it highlighted. Curb two. Zones. We've got three zones. We've got the parking lot. We've got the path, path one, I should say, and path two.

We have what shouldn't be an aligned edge so we're going to remove that. That was accidental. We are going to remove the aligned edge. And we'll re-add it as the grading limit. Something must have happened when we were adding the grading limit. We must have added an aligned edge as well.

So here I'm just going to call it GLGradingLimit. We're going to leave it minimum drain slope at 2%, max at three to one, 33%. Actually, let's change that to 50%. We'll go two to one. So as you can see now, we've got it correct. We've got our grading limit. And then we have no aligned edges, bend lines, drain lines, low points, bounded points, or offset points.

So looking at this project, at this point in time, we're at 50% design. We've defined all our 2D objects. And now we want to go to optimize this in Grading Optimization. So if we select Optimize-- and I have multiple EG surfaces in this drawing.

As you can see, I've got another surface up here to the north a couple of surfaces up here to the north. So it's going to ask me what surface I want to use. And because I believe this is the EG based lot but I'm not quite sure, I'm going to select it.

And then it's going to launch. There's a little delay at the moment because I'm currently utilizing a two-in-one Surface for the Grading Optimization feature. And it's a little slower. But it still works. Does the trick. So we're going to give it a second to load here. All right. Bring it over to the screen.

So here's what the optimization workspace looks like. Over here you've got your building pad. You can see all your pond, your retaining wall if you had one, your curbs, your zones, your grading limits. And with that, you have the option of turning them off and on. So I turn off the eye. You can see it turns off the building pads for visible/not visible. The future building pad. Turn off the pond. Turn on the pond.

All right. So you have all that info right there. In the lower right hand corner, you've got this little info button About. You can select that. It'll give you what version you're running. It'll give you anything you need to know about the current product that you're working with. You can also go to Manage License.

And so we don't really need anything in here. Hit X. You've got your preferences. So we're going to refine surface. Mesh quality's medium. I really don't play around with these all too much. You can remove the EG surface. Customize max triangle size. Yes. No. And then you can define that.

Then you get your visualization toolbar. So under results, you can show it as cut fill. You can show your violations with your triangles or you can have none. You can also change your theme. It's currently set to elevation.

We've got a grayscale constant and a grayscale. And then we've got a slope. You can run the aspect ratio. I typically leave it at elevation.

You can show contours or you can show your triangles. I like to leave it on the contours. And then you've got hydrology so you can select the vectors. And if you zoom in, you should be able to see the direction of the flow with your lines or you can select none. I have that turned off unless I want to see where my drainage is going for the final product.

So you can adjust these settings. You can adjust the contour interval every two feet. And as you can see, it adjusts. One foot. You can go 5 feet. You can adjust the slope ranges and then we can turn on some advanced settings. And you can see those slope settings. Not something I typically play with but it's there.

So we'll get out of this. And here's your status toolbars down here. And then if we come over here to the right hand side, we've got some optimization options, which is the real meat and potatoes of this whole thing in order to get what you're looking for.

So if we come to Optimization Options, we've got our minimum drain slope, 1%, our max at 50%, two to one. We've got 100,000 iterations.

In this particular example, I know I'm not going to be able to balance my cut fill or minimize the impacts of my earth work. So for this first little run, we're just going to put it on smooth surface at the moment. But you can adjust these from 0 to 100 as to how you want to do your objective weights.

And then you've got your Optimize button. So here we select our options under the Optimization Options. And then we can optimize. We've got one more little bar over here within [INAUDIBLE] and that gives you your level of exaggeration. You can adjust it higher, lower. I typically keep it right down here at the bottom.

So once our optimization options have been filled in, we can click Optimize. And as you can see down here, your progress bar. Now these red triangles indicate min/max slope. And as you can see-- we don't want the properties-- the red indicates that it's an error. And it gives you the defined error.

And for this presentation, it's actually getting caught on my other screen. There we go. All right. The red indicates the min/max slope. So right now it's red because our maximum slope is above 5%. And as the grading continues to refine, you can see those triangles go away.

Over on the right hand side, you can also see the violation view. You've got max slope violation is your red. Your blue minimum slope violation is your minimum slope violation. And your multiple violations is a darker red. Then you've got this convergence plot which you can check your optimized status.

So if we expand that out, we can then see that here our ideal proximity measure, what you really want to see is this line come all the way down, get very, very-- as close to 0 as it can get, and then flatten out. And that tells you how many iterations it's been through and where it's at in the process.

So right now we kind of keep going up and down, up and down. The longer we let this run, the better the result we should get. So up here, you've got review needed if it's red, iteration required yellow, and green is solution likely.

At this point in time, we just have iteration required showing up. And it looks more iterations are needed to determine a solution at this point. So you come down here to volumes. We've got our cut fill volumes. And as you can see here, net volume of 17,000 cubic yards of cut or fill and then your terrain smoothness. So we have this set to 100%. It's continuing to go down.

And as you can see, the building footprint. You can see the reveal on the building. You can see the reveal on the curb. And we've got a couple violations. So right down here, there's a notification center. I shouldn't say violations. This is the notification center. As you can see, we have two notifications.

So if we select the notifications, we can see GOCurb1 is disabled because it's beyond the grading limit. And then you can see here that GOPond adjusted volume to boundary. New target volume. So the boundary, what it's telling us here in this notification center, is the curb is disabled because beyond the grading limit.

So we have a grading limit right here at the edge of the road. We've got our curb that comes into it. And they overlap. So it's going to ignore this line. And then the pond, so the under drain soil filter, it looks like it's not going to fit the target volume of 2,500 cubic feet but it will fit the target volume of 2,449.73 cubic feet with no adjustments to it. So we know we're going to have to go back and make some adjustments.

So as you can see, we're letting it run. It's running. And it's doing a great job getting us back and forth for our desired result. So what we're going to do now is, for the sake of time and the back and forth process, we're going to hit Stop. Looks like we're pretty close.

So we'll hit Stop here. And then as you can see, we've got a ways to go before optimisation. We're not quite there yet. We are then going to send our desired results back. So first I'm going to dismiss this notification center. And then we're going to send our optimized results back to Civil 3D.

So when you do that, you'll get this dialog box. You can send the surface. You can send the feature lines. And you can send the points. Well, for this project in particular, we have no points but we do have a surface and feature lines.

I don't recommend bringing in the surface if you've got a large data set. It's very heavy. And it'll certainly bog your system down. What I would advise is to bring in the feature lines and then create the surface from the feature lines that you've brought in from Grading Optimization.

The reason being is that this surface is going to come in as a combined surface of the existing grade as you can see on the outside and the finished grade that we've tried to define with grading objects. So if you bring in just the feature lines, then you can define what you're really looking for.

You don't have to bring in the entire surface. You can just bring in the feature lines and then define it as a finished grade surface. So for this, we'll do a little bit of both right off the bat to show you. So this isn't a large surface. It should come in no problem. So we're going to call it FG.

The style, you got the WP proposed contours. Those come from our own style within our own template. You have other options available to you if you want. So we're just going to bring them in as WP proposed contours. And then the feature lines. So you've got some options here for the feature lines.

You can update the styles. Standard for this example. Just run them as standard. We'll hit Finish. Data return options. We're going to say update an existing site instead of creating a new site.

And then weeding options. So now you have the ability to weed through your feature lines so you don't get all these elevation points at a foot apart or two feet apart. You can specify either the grade percentage difference or the length in the difference.

For the first go around, we're just going to leave it at zero so I can show you what it comes in and looks like. So once all this stuff has been defined, we can then hit Finish.

And as you can see here, it brings in the entire surface, not something we need. Right. We've got our slopes here. You could see our drainage is coming down and across. We're going to move this up. And our grading actually ties in right at the grading limit, which is great. That's what we're looking for.

So we come in here to Object Viewer. You can see the outline of our pads. You can see the pond. See drainage is coming down. See the paths.

And as you can see, this preliminary grading got us here in about a half hour, 45 minutes of discussion for a small site with little to no-- there's nothing that sticks out. I don't want to say that. Basically, this is a fresh site.

It's brand new. It's a little easier than an existing site that you have. So it takes a little less time. But to tinker through this with original feature lines and trying to go-- what you're trying to figure out in your grading, it's a lot more difficult to use feature lines right off the bat than punch it in to GO, bring it back.

Now you have an idea of a great starting point. And you can then filter through. So we're going to refine our finished grade surface a little bit. So let's get into our tool space. Surfaces. So we just called it FG. So we're going to get into our finished grade surface.

And we are going to define the boundary. So we're going to add a boundary. And we're going to utilize our grading limit as our boundary. So GL grading limit outer. And there we have it. We can now go through and you can weed through your feature line points.

We don't need all these points. Right. We just need probably some of the critical areas-- the corners, a few along the radius, maybe some midpoints for longer distances. We've got a distance here too here we'll probably want a midpoint or a couple of points. But we don't need hundreds of points along our feature line to define our surface.

Same thing goes for our curbing, our walkways. It's not necessary. So we had a couple of errors in our notifications when we were going through. One of them is the curb. So as you can see here, it overlaps. So let's pull this curb back to the midpoint.

And then when we define here, let's go back into our-- so if we go into our Pond Properties, firm, [INAUDIBLE] the free board slope. Allow boundary to change. We're going to update that to say yes. And that will help us achieve our-- so if we select on it, right click-- actually, if we just select on the pond, come here, we're going to update this to say Allow Boundary Change. That way we can achieve our 2,500 cubic foot volume. So it changed that.

What else do we want to do? Let's add in a couple of drain lines. We'll add in a couple of drain lines. Grading Objects. Call it DrainLine1. DrainLine2.

So we added in a couple of drain lines. So now we're going to go back into Grading Optimization. So we've updated the curbing. We've updated the pond. We've added a couple of drain lines to refine our proposed grading.

You can see the drain lines have been added. You come up here to drain line. DrainLine1, DrainLine2. And then you can see the curbing. We've updated the curbing so it doesn't overlap. And the pond. We're able to adjust the pond. So if we come back here to Optimize, come here to Optimize. Let's now update it to say we're going to balance the cut and fill 50%. And we'll minimize the earthwork 50%. And actually come up here and add that in. So that's good to go. And we're going to hit Optimize again.

As you can see, there are currently a bunch of violations right off the bat. Multiple violations in areas. You can see minimum drain slope, max.

So what we're going to do-- we'll hit Stop. We're not going to send the results back. I think I understand what's going on. We're going to take out the drain lines. And then we will go back to Optimize. Select the EG surface.

So let's go back to the options. Since cut fill wasn't a real big-- we know we're not going to be able to balance cut fill. We can try minimizing earthwork but I'll leave that. I'll sit that back to zero for this particular project. Come back up. We'll hit Optimize.

So you can see it's running through your pre-checks. There are no more violations. If we zoom right in, you can see that the boundary has been adjusted ever so slightly on the pond to get the capacity we're looking for. Over here, the curbing isn't overlapping the grading limit.

We still have some violations at the moment. We're going to let it run for a couple minutes here so we can get those violations down. And go back to the convergence plot. You can see it took a sharper turn down. We're getting closer to our desired result on the second time around.

Looking at the cut fill. All right. So we're getting closer and closer here on the second round. As you can see, it's relatively quick as well to go back and forth from GO to Civil 3D, a lot quicker than thumbing through feature lines or fiddling with grading objects right off the bat. The intention of this is to get you to 60% to 75% in a relatively quick manner. That's what the tool is designed to do. It's not designed to give you a finished grade result right off the bat.

You're going to have to go in and refine your feature lines. You're probably going to have to do some hand grading. But the desired results at the moment are to get you to that 50% to 60% to 75% in a relatively quicker manner. So at this point in time, we're going to hit Stop. And we're going to send those optimized results back now that we've adjusted the curb, the pond. So we'll send those optimized results back.

And this time you'll see we've got 22 feature lines, a surface. So what we want to do, we don't want to create a new surface. We want to update our old surface. So update an existing surface. FG. So feature lines. We'll come down here. Keep it standard. But this time we're going to do some grading options.

So I'm going to weed through anything at 1% and anything greater than let's say 5 feet, length of-- actually, we'll go two feet and hit Finish. As you can see, it's weeded through some. Let's go to our tool space. See what's going on. It's updated the surface. It's added feature lines.

All right. It's added additional feature lines on top of what we had. So what we can do-- let's do this. Yeah. Let's eliminate the surface. Actually, hit No. Let's get back into our optimization as that didn't quite work out as planned.

We will run Optimize again. Give it a couple of minutes. I'm not quite sure what just happened. It looks like it didn't override the feature lines. It just put feature lines on top of feature line when we brought back the surface which wasn't the desired result that we were looking for.

So we'll stop this right here. We'll send the optimized results back. Looks like we've got 22 feature lines. This little tidbit right here, feature line overlap existing. So let's create a new surface. Call it FGUpdate. Hit Finish.

We'll delete the old one. And as you can see, the surface hasn't been quite as refined. But for the example, we're showing a lot of back and forth and how we can go between the two products.

So today we went through these learning objectives. We went through the basics of grading optimization. We went and looked at how to assign 2D objects to grading objects. We've accomplished how to adjust the grading of optimization settings and parameters and then run that for an ideal output. And we've learned how to export features generated from the grading optimization and bring them back to Civil 3D.

And that's one of the key components of the product, in my opinion, is that we've created and developed this 2D plan. We're able to send it to Grading Optimization to get us a 50% grading plan, 50, 60, 75% grading plan, depending on how detailed your 2D drawing is. And then we shift it back in relative-- this class is about an hour long.

I've shown you some pretty basic information in an hour. And we've generated a 50% grading plan in about an hour. And to sit down and go through the-- and to sit down and go through all of the iterations of feature lines, and grading objects, and corridors takes a little bit of time and set up. And this gets you 50% of the way there in an hour. So I think that's what I like to stress about the product and using it on projects, whether new or existing.

And I thank you all for attending and hope to see you around after the class. If you have any questions or comments, please feel free to email me. My email was on the beginning slide of this presentation. Have a great day.