Create basic assemblies

00:06

So in this video, we're going to kick off our discussion on the creation of corridors in Civil 3D.

00:11

But before we can create any corridors, we first have to have the backbone to a corridor, which is an assembly.

00:18

So we're going to go ahead and create three different assemblies for our drawing.

00:22

And in order to create assemblies, what you have to do is you need to navigate up to the Home tab of the ribbon bar,

00:26

get into the Create Design section and dropdown the Assembly tab.

00:31

From here, we're going to go ahead and select Create Assembly.

00:35

And inside of here, we're going to choose a name.

00:38

So we're going to create three of them. I'm going to call one of them, Dev-No Target.

00:46

We're going to create a Dev-No Target, a Dev-Target, and then a cul-de-sac.

00:52

So I'm going to do Dev-No Target now.

00:54

We're going to go with basic and all codes.

00:56

So this is the assembly style and there are codes that's associated with assemblies.

01:00

So the code sets have to deal with certain links and points inside of our assembly.

01:06

And I'll show you in a second what those links and points are, and then we can deal with these later.

01:13

So I want to go ahead and click "OK".

01:14

And so what Civil 3D is now going to ask me to do is specify an assembly baseline location.

01:18

An assembly baseline is basically where you build your assembly off of, so where you're going to link that assembly on to your alignment.

01:27

So we're going to go ahead and select below our profile and Civil 3D automatically zooms in on this baseline for us because,

01:35

as you'll see it a little bit when we zoom out, these baselines are pretty small.

01:39

So to build off this baseline, the next thing we need to do is we need to open a new toolbar that we haven't used before.

01:45

And up inside of your Palettes window, you're going to go ahead and click on this Tool Palettes button.

01:50

And inside the Tool Palettes button, you're going to get a new window that looks like this and it has assembly pieces, so subassemblies.

02:01

So inside of here, under common assemblies, you can pick fully created roads and just select them,

02:07

and then change the parameters and place them into your drawing.

02:11

And that's great for some instances, if you needed to do something very fast.

02:15

But for our application, we have a very specific roadway.

02:19

So we're going to go ahead and go into this basic imperial basic sub-assembly section.

02:25

And so what I'm going to do is I'm going to build this based off of basic lane first.

02:30

Basic lane doesn't have any targets.

02:32

It's just a width, depth, and slope requirements.

02:35

So every time you select one of these objects, this parameter window shows up over here with all the different parameters,

02:41

for the subassembly piece that you've just selected.

02:45

So I'm going to select basic lane.

02:46

I'm going to start working from the baseline and go right.

02:49

And so these are being built as you're driving down the centerline of your road.

02:54

So we're going to go to the right first.

02:56

We're going to go at a width of, we know our road is 15 feet wide, I'm not going to change the depth, and I'm going to leave the slope as negative 2%.

03:04

So from there, I'm going to go ahead and get back into my drawing window and I will now select my baseline.

03:11

I can select anywhere on this baseline and it will place my basic lane at the center point of that baseline.

03:18

So I selected the baseline, it placed my lane in here.

03:21

And so when I was talking about the code sets for this assembly, I talked about saying links and points and shapes.

03:31

So inside of this, if you zoom in closely, it's a little hard to see at the top here,

03:37

but at the bottom you can see it very well, there's a line here that's in yellow and then there's a purple shape.

03:42

So you have links which are the lines, you have shapes which are the colors, and then you have points which are these round circles here.

03:50

And so all of these code to a specific point on your corridor when you build your corridor.

03:56

So we're going to go ahead and now choose a curb to go into our roads.

04:00

So I'm going to select a curb.

04:02

I'm going to make sure it's on the right side and then I'm going to check my settings.

04:06

I'm going to have a gutter width of 1.5 feet and a curb width of 0.5 feet.

04:10

So I'm going to go ahead and select this upper point here, that's my link point for my subassemblies.

04:15

So I'm going to go ahead and select it and it now places a curb in for me.

04:19

Now I'm going to go to a basic sidewalk.

04:21

I'm going to go here, select Basic Sidewalk.

04:23

I'm going to go scroll down and I'm going to look at the side to make sure I'm on the right, and then I'm going to look at the width.

04:30

I know that I have enough distance in my alignment to be able to go from my centerline to my property boundary, and have a 8 foot sidewalk in here.

04:40

So I'm going to go ahead and change my width to 8 feet.

04:43

I'm going to leave the depth as 0.33.

04:46

I'm not going to change the buffer widths or anything like that.

04:48

And I'm going to go ahead and hit "Enter".

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And then I'm going to place my sidewalk at the top of the curb here.

04:54

And then the last thing that we have to do in order to be able to make this corridor tied to our existing surface is,

05:01

to add in some form of a cut and fill slope.

05:04

So I'm going to go with the basic side slope cut ditch.

05:07

And then I'm going to go ahead and change the parameters.

05:10

And so inside of these parameters, this one is a little more in depth.

05:13

We have cut slopes and fill slopes and what those slope ratios are.

05:16

We have a foreslope ratio and a foreslope width.

05:21

And so the foreslopes and the bottom width and the backslopes, all have to do with this ditch, this basic side slope and cut ditch.

05:30

So when you're cutting, this entity will create a ditch in your cut section.

05:37

So if I don't want to have that ditch because I know that I'm going to be very close to the existing surface,

05:43

what I can go ahead and do is I can change these foreslope widths and bottom widths and backslope widths.

05:49

And I'm going to go ahead and do that, I'm going to change all of these to 0.

05:52

And that way, it doesn't matter what my foreslopes are and my backslopes are, I'm just going to have 0, so it will never show up.

06:00

So I'm going to go ahead and leave those, and then I'm going to select the edge of my sidewalk.

06:06

And it's going to place in this entity that looks like my cut slope layout mode and my fill slope layout mode.

06:12

Now from here, what you can do is I could go back and I could do all of these objects and build them to the left,

06:19

like I did to this, built it to the right.

06:21

Or what you can do is you can drop a window across all of these and then you can right click and you can choose to mirror.

06:29

And so if I choose Mirror, then it will ask me to select a marker point within assembly for mirrored subassemblies.

06:34

And if I select the baseline, it will mirror my road about the center.

06:39

So moving on from here, I'm going to go a little bit faster.

06:42

I'm going to get out of that window completely.

06:44

I'm going to go back into my assemblies, I'm going to create another assembly.

06:48

I'm going to create a Dev-Target.

06:51

Because when we're building our corridors, we're going to talk about building a corridor with no targets,

06:56

and then we're going to talk about building a corridor with targets.

06:58

So we're going to do a Dev-Target.

06:60

I'm going to leave all these options the same. I'm going to click "OK".

07:02

I'm going to place a new location for a new baseline right here.

07:06

Civil 3D zooms in for me. I open my Tool Palettes. I'm going to go ahead, go back up.

07:10

Now I'm going to use this basic lane transition, and from here I'm going to scroll down, I'm going to set my default parameters.

07:17

But we're going to end up using targets so this default width isn't necessarily that big of a deal.

07:22

But the one thing I do need to make sure I'm going to do to make sure my targets work correctly is,

07:26

set this transition here to this bottom choice, change offset and elevation.

07:32

You have an option for hold offset and elevation, hold elevation-change offset, hold grade-change offset, and hold offset-change elevation.

07:41

We want to change both the offset and the elevation because we're going to base it on an alignment with a profile.

07:46

So we want to change the location and the elevation for our targets.

07:51

So we're going to go ahead and select Change offset and elevation and we're going to build to the right.

07:56

And we're going to insert the crown, so we're going to go ahead and select it.

07:59

Then we're going to go to our curb and gutter again.

08:03

And we're going to go to the right, and we're going to build it off the top.

08:07

And then we're going to go to our sidewalk.

08:12

And we're going to make sure that our width is set to 8 feet.

08:17

So we're going to set our width for our sidewalk at 8 feet.

08:21

And we're going to place that on the back of the sidewalk and then we're going to go to our basic side slope cut ditch.

08:25

And we are going to scroll down and set our foreslope width to 0, our bottom width to 0, and our backslope width to 0.

08:33

And then I'm going to go ahead and add that to the back of my sidewalk.

08:38

And then I'm going to get out of this, drop a window across, right click, Mirror, select my baseline, and now I have my non-targeted and my targeted.

08:49

Now we're going to go through one last item.

08:51

We're going to create an assembly for our cul-de-sac.

08:55

And so this is a more advanced method of creating assemblies, but we'll use that later.

09:02

So I'm going to go ahead and call my assembly Cul-de-sac.

09:09

And then I'm going to leave all of my assembly styles and my code set styles the same.

09:13

I'm going to click "OK".

09:15

I'm going to place my baseline.

09:17

Civil 3D's going to zoom in.

09:18

I'm going to open my Tool Palette again.

09:20

This time I'm going to do a basic lane transition, but what I'm going to do is I'm going to build it to the right from here.

09:27

I'm going to place it in at 15 feet, even though we're going to use the target.

09:32

But I'm going to change my default slope to 2 instead of -2, and I'm also going to change it to change offset and elevation.

09:41

Now the other thing that we're changing now is we are going to be building this from an edge of travel way,

09:47

so I'm going to change my crown to Edge of Travel Way, and then I'm going to select my alignment baseline.

09:53

So now I'm placing my lane in here.

09:56

I'm now going to go and select by curb and gutter,

09:59

but because we're going to be placing this roadway based off of the edge of pavement, we're going to place our gutter on the left hand side.

10:05

So I'm going to select my side, I'm going to hit go to left, and then I'm going to leave everything else the same.

10:11

And I'm going to select my baseline.

10:13

And then I'm going to go to my sidewalk.

10:16

I'm going to build to the left.

10:19

I'm going to put in a width of 8 feet.

10:22

And then I'm going to place it on the back of my curb.

10:25

And then I'm going to go to my basic side slope cut ditch.

10:27

I'm going to modify my widths to 0 for foreslope, 0 for bottom, and 0 for backslope width.

10:35

And then I'm going to place it on the back of my sidewalk.

10:38

And I am going to hit "Enter".

10:41

And you'll see why this works out when we build our corridor in an advanced mode,

10:46

but we are going to not need an entire road to build this section of our roadway.