Civil 3D 2018 New Feature: Introducing Relative Feature Lines - Pt. 2

now that we've taken our first look at relative feature lines we'll try using them in a practical example in this session we'll use relative feature lines to control the pavement grading of a proposed parking lot as you can see I've been a drawing open on screen we are viewing the drawing in two different views on the Left we can see a tough view of the geometry and over here on the right we are viewing the geometry using a southeast isometric view such that we can see the elevational differences I'm going to come back over to the left we'll do a quick tour I started this drawing by creating a feature line you can see this feature line is at elevation and it was drawn with a negative two percent slope heading to the west I then created a stepped offset of this feature line at negative two percent and then I did a stepped offset upward and two percent then down and then up these feature lines were used to define this surface called design surface if I select that bring up the object viewer I can orbit this and we can get an idea of what that surface looks like let me close the object viewer and I'll press escape this surface represents the overall grading intent for my parking lot generally speaking as the stormwater hits the pavement it's going to drain to the middle and then it will drain to the west chances are I will have an inlet right here and right here notice I have also created some polylines defining the edge of pavement of my parking lot both the outside edge and the island if we look over to the right you can see that I've also copied some of my brake line geometry from that design surface we'll be using these entities in a little bit when we come back over to the left I'd like to start by converting my edge of pavement geometry into feature lines and then I'll project those up to that design service to do that here on the Home tab I'll go to the create design panel I'll open the feature line menu and I'll choose create feature lines from objects I will select the edge of pavement polylines and I'll press Enter I'm not going to be leveraging a site in this case I'm not going to name the objects I am going to change their style let me open the menu and I'll choose the edge of pavement feature line style I'd like to erase these existing objects and I'd like to assign elevations let me click OK I'd like the elevations assigned from the design service will insert the intermediate grade breakpoints and I'd like these entities to be relative to that design surface at elevation 0 let me click OK at this point you can see that that geometry has been projected up to meet that surface likewise these feature lines are relative to the surface so if my surface were to change these feature lines will update as well let's press ctrl-z to put things back the way they were and we'll take the concept a little further now that I have these relative feature lines let's use them to build a 3d corridor model of this parking lot if we look down in the lower right you can see that I've created an assembly and that assembly has a single curb and gutter object on it I'm going to sweep this curb and gutter around the feature lines to define the curb and gutter geometry to build the corridor I'll come up to the create design panel and I'll click the corridor button and will then select one of my feature lines and since I'm using this as a corridor base line I have to give it a name I'm going to call this lot yo P and I'll click OK I will then give my corridor name I'll call this parking lot we'll be using a feature line as the baseline we'll be using that lot ELP feature line for the assembly I'll select that curb and gutter assembly we just looked at I'm not going to be targeting a surface just yet I would like to set baseline and region parameters though so we'll leave this checked and I'll click OK in the dialog box I'm going to click the set all frequencies button and then for along curves I'm going to change this to by curvature and I'll set the mid organ distance to 0.1 I do this to tighten up the assembly insertions as we go around curves something that I definitely have in my island geometry when I'm finished I'll come down and click OK and then I'll click OK and we'll rebuild the corridor next we'll add the island I'll do that by selecting my corridor I'll go to court or properties parameters we'll add a baseline I'd like to add a feature line and I'll click this green block this allows me to select the feature line from screen I'll choose the island and then we'll give this a name I'll call this lot Island and I'll click OK and ok once that baseline has been added I'll right-click and choose add region and then we'll select the curb and gutter assembly I'll click OK and ok and we'll rebuild now at this point my corridor is being displayed using a plottable style let's change that I'll do that by coming over to the properties palette and I'll drag this to the bottom I'll change the code set style to working now the corridor still selected I'm going to choose the object viewer and then I'll click the southeast hot spot on the viewcube a couple times to Center the model on screen I'll roll the mouse wheel forward and as I orbit you can see not only do we have dynamic pavement grades we now have dynamic curb and gutter as well I'm going to close the object viewer and I'll press escape at this point I'll come over to the prospector tab and we'll come down to the corridors group let me open this up I'll right-click on my new corridor and I'll set the rebuild to automatic now that we have our curb and gutter finished we'll build a surface I'm going to start by hiding this design surface I don't need to see this right now I'll do that by selecting it and in the properties palette I will change its style to no display and we'll build our corridor surface we'll do that by selecting the corridor and in the contextual ribbon I'll choose corridor surfaces I'd like to create a new surface we'll call this lot top for the surface style I'm going to choose contours and triangles so we can see both of those components and then the data I'd like to use for this surface will be feature lines will leverage the back of curb feature line I'll add the flange also considered the edge of pavement will add the flow line of gutter and the top of curb I'll come down and click OK once the surface is built I'll select it and we'll bring it up in the object viewer let me spin this around and you can see that we have nice definition in the curb and gutter geometry however the grading in these middle areas is incorrect that being said I expect that because I haven't added the brake lines just yet currently we are simply triangulating from edge of pavement to edge of pavement let's fix that I'm going to close the object viewer I'll press escape to deselect let's come back over to this view on the right if you remember I created these additional brake line objects earlier let's convert these into feature lines and we'll project these up to meet the design surface once again we'll come back to the create design panel I'll open the feature line menu and I'll choose create feature lines from objects I'll select these objects and press Enter no site not going to name them for style I'm going to use grading edge we'll erase the objects and we'll assign elevations let me click OK I'll assign the elevations from the design service will insert the intermediate grade breakpoints and I'd like these brake lines to be relative to that surface at elevation 0 let's click OK at this point I now have brake lines that are dynamic to that design surface let's add them to the parking lot service I'll do that by selecting one of them I'll right-click and then I'll come down and choose select similar I apologize that's off-screen once they're selected I'll come up to the contextual ribbon and I'll choose add to surface as brake line we will add these to our parking lot service and I'll click OK now since these brake lines represent a long stretch I am going to add some vertices so I'll select the distance option within these supplementing factors and I'll set my maximum triangle length to 15 feet I'll click OK I will then press escape to deselect let's choose the surface we'll go to object viewer and we'll take a look at this in 3d as you can see in addition to the nicely modeled curb and gutter the entire pavement area now matches the intent of our design service when I'm finished reviewing the surface we'll go ahead and close the object viewer now the surface is still selected let's push this to the back I'll do that by right clicking I'll come down to display order and I'll choose send to back so at this point not only do we have a nicely modeled parking lot that parking lot model is also dynamically linked to that design surface so if I was to edit that design surface by dragging some of these defining feature lines up and down you can see how the entire parking lot model updates automatically so in this case I used relative feature lines to create a parking lot that automatically reacts when changes are made to a design surface now this is just one example with a little experimentation and practice relative feature lines can be used to add a dynamic component to many of your design tasks would you like to explore other Autodesk infrastructure ideas and workflows if so please visit the civil immersion blog by scanning the QR code or by following the URL listed below

Channel: Jeff Bartels

Views: 52,866

Keywords: Bartels, akn_include, Autodesk, Civil 3D, 2018, new, feature, relative, line, tutorial, how to, learn

Id: kbn42atWweU

Length: 8min 41sec (521 seconds)

Published: Mon Apr 17 2017