![]() ![]() Okay? Now, you can reverse the direction of these stations, but just for simplicity, we’re just going to leave that alone. ![]() I’m going to press enter after doing that, and it automatically stations my alignment. Now, for simplicity sake, I’m just going to draw in some arbitrary lines here, and I’m going to go perpendicular to the center line of my existing road. So, what I want you to do is click on this drop-down menu on this button, and then click tangent to tangent, no curves. Now, we’re only going to focus on two buttons on this dialogue box. Then we get this very overwhelming dialogue box, the alignment layout tools tab. I typically just name it our road, Maple Road. We’ll get a little dialogue box here, and we need to name our alignment. What I want you to do is I want you to go up to the alignment pull-down menu, click on that, and then click on alignment creation tools. ![]() When it comes to engineering you need to be able to set your center line grades for your road, and that’s the basis for your entire design, you know, when it comes to grading out to the gutter line, you know, determining your top of curb, and then grading out to your existing surface. ![]() Now, the next thing is before we actually get into alignments, we have to determine, okay, what are we actually using our alignments for? Our alignment for our road is the basis for our center line grade. There isn’t any 3D information assigned to any of this, so this is just an arbitrary road that I drew right here with a center line right here and the edge of the pavement. we’ve got our existing contour shown from that. You can see right here we’ve got our existing surface, which is listed right here as EG. Now, I know many of these terms might seem overwhelming, but we’ll gain more confidence as we dive into it. Now, not only will we be finding out how alignments work, but we’ll gain an understanding of how they’re used to profile our existing grade, lay out the center line grade of our road, and use a road template to create a corridor surface. Today we’ll be looking at how to use alignments to lay out a road design for residential development. ![]()
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January 2023
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