00:09Create cross sections as well as cross section sheets. We will also look at the drive function
00:15to view our finished corridor. From the existing ground contours we can see a few areas where we
00:21will need to add culverts. We can also utilize our profile to determine the low points of the
00:28existing ground. So it looks like we will add about three culverts to our design file here. To do this
00:34we will pick the pipe network from our home menu and we will choose create pipe network. We can then
00:42select the main alignment and specify the existing ground surface as well as some of our other view
00:48parameters. Now in the pipe dialog box we can specify the size of the pipe that we need to lay
00:54out. When we choose the pipe catalog we can specify the type of network that we are using. In this
01:02case
01:02we want to use a storm drain. Now if we don't see the size of pipe that we need we
01:09can expand the size
01:10availability by adding all the pipes from the catalog. Once we have determined the culvert type
01:17and size and in this case we want to add a 48 inch by a 48 inch concrete box culvert
01:24and the headwall type we
01:26then pick the invert and outlet locations in our CAD file. The culvert appears with the labels and we can
01:36adjust the headwall rotation and move the labels so that they can be read easier. We will do the same
01:44thing
01:44for the other culvert locations as well. Now for these items we will change the size and material and
01:51then we'll adjust the labels for those as well. Near the end of our roadway we will add an inlet
01:58since we are in cut condition and the outlet will be on the other side. Now keep in mind when
02:07we place
02:08the culvert the elevation will be based on the items that we snap to so in this case we are
02:13snapping to
02:14an existing ground contour. Now we will set up the sample lines that will dictate the location of our
02:21cross sections. We will go to the main menu and choose sample lines then specify the station range in the
02:29dialog box. We can adjust the beginning and end values or select the locations within our file. We will
02:37also add additional sample lines at each culvert crossing that we added. We can adjust these lines
02:44to the exact location, length, and skew angle after we have created the lines in our set. Now to do
02:52this
02:52we will select the line and use the grips to adjust the center location. Then we can use the end
02:58points
02:59to match our culvert limits. We can also extend the sample lines to widen the display area of these sections.
03:08Once we have all of our sample lines set up we can create the cross sections. We do this by
03:14selecting
03:15the section view in the home menu and we will pick create multiple views since we have multiple
03:22sections that we want to create. We select the size and scale of our sections as well as several other
03:28display settings and we've selected all the sample lines to include the culvert crossings as well. This is also
03:36where we would set up our display settings to show the slope and offset values that are based on our
03:42code sets in our corridor. As we view the sections we can look for any areas that may not be
03:49modeled
03:49correctly. One of the pipe sections doesn't have enough clearance so we can select the culvert in the section view
03:57and edit the size.
04:02The section will automatically update once we've adjusted the culvert. Now in this area we actually
04:08want to change our corridor model by creating a cut ditch on both sides. So we go in and revise
04:15the
04:15assembly then rebuild the corridor. Now we can adjust some of the information to the inlet structure such as
04:23making it a drop inlet or adjusting the end section. But in this case we'll just adjust the invert elevation
04:30so that it matches the ditch flow line. Again once we update the invert elevation our pipe section updates automatically.
04:43The sample lines are dynamic so if we make any adjustments to the lines
04:47our cross sections will update automatically. And then we can change the skew angle of our sample lines
04:54or the length. Any changes that we make will be reflected in our cross sections. Once we have all of
05:02our sections in order we can now create cross section sheets. So we'll go to the output tab and select
05:09cross section sheets. The sheets will be based on our current setup and Civil 3D may tell us that we
05:15need
05:15to save our file before we create the sheets. We'll just select ok.
05:21If we discover that any of the sheets are at the wrong scale we can just select the viewport
05:26and choose the drop down arrow in the center and then change the scale so that everything fits within
05:32the drawing. Everything looks to be good here. Now we'd like to run the drive command to inspect our
05:41corridor but before we can do this we need to create the surfaces that are based on our corridor.
05:47So we select our corridor then we select corridor surface. We can select the different elements from
05:54our corridor to base that surface upon. So some of these elements are going to be the pavement,
05:59the cut and fill limits, or the sidewalk, and the curb and gutters. So once we've added those now we'll
06:06go
06:06to add an external boundary at the edge of our corridor and this prevents any unnecessary triangulation.
06:13Then we'll rerun the corridor and then we can view the design contours and we can even see based on
06:20the
06:20surface contours that this has accounted for our super elevation. So these surfaces look like they
06:26will work for what we need. Next we'd like to create a surface that only displays the existing ground
06:32outside of the corridors that we've created. To do this we will create a drive surface that contains the
06:40existing ground surface. So we'll simply paste that in there. Then we can create a hide boundary for the
06:49drive surface that is based on our design corridors. And once we've added that hide we can see that those
06:57contours don't extend across that hide. And we'll do the same thing for all the other design surfaces as well.
07:04Then once our surface is set it looks like we'll be ready to create our drive. Now one step that
07:12we
07:12want to do before we execute the drive is to create corridor solid. And so we'll extract the solids from
07:18our corridor. So this will help in the quantification of our materials and the solids tend to display a
07:25little bit better in the drive view. When we extract the solids we want to make sure that this is
07:31dynamically
07:31linked to our corridor so that if any changes are made those will be reflected in the solids as well.
07:38So to run the drive we select our corridor then select drive. Next we'll select the feature line
07:44that we want to follow. Once we're in the drive view we can set the view parameters so that we're
07:51at the
07:51right height and at the right angle. Then we can make any kind of changes to our surface display. In
07:57this case
07:57we want to correct the color so that only the solids are displayed. We can also adjust the design speed
08:04of the drive or we can step through a section at a time. So really this provides us with the
08:10best view
08:12to ensure that our cut fill limits are correct and that our other elements are correct as well.
08:17We can inspect the corridor for other features such as the curbs or the taper lanes and verify that those
08:23are in good condition as well. So this gives us the ability to review things both horizontally and
08:29vertically at the same time. And we'll review all the corridors that we created. So these look to be in
08:40pretty good shape. We can see one or two areas that we may need to adjust or revise.
