Grade Subdivisions in Minutes from a Civil 3D Corridor

hello everybody and thanks for joining today i am jim coppinger with zen tech consultants and today we're going to be talking to you guys about uh creating subdivisions from a civil 3d corridor which is just a a nice little uh tip um something that we we cover regularly and and the details on how to do this extensively we cover in all of our site grading and subdivision design classes here at zen tech consultants so um just figure we share this this little uh process here with you today which hopefully shouldn't take more than 10-15 minutes um so before i get into the the presentation just a few uh housekeeping items uh because it's a public forum all the attendees microphones and telephones are muted but if you guys do have any questions or concerns you can just type them in to the chat box or the question box um i'm not going to take the time to answer as we go because i just want to kind of get through the presentation but i have a lot of time at the end of the class so if there are any questions or concerns i will answer those then all right so with that said let's go through a few slides and we'll get into the tip for today all right um for those of you who haven't actually worked with us before or attended any of our webinars or classes we're zen tech consultants and we work in the ac and manufacturing space you know helping our clients with all of their technology needs we are civil cad experts um we can handle all your construction quantity takeoff estimating really any of your technology workflow processes or custom customization training configuration needs we're here to help so we hope you guys all hit our website see all the really cool things that we can do for your company all right so with that said right let's talk about what we wanted to you know get into here today which is the idea of using uh your civil 3d corridors as a start point for your subdivision grading and it's really it's it's surprising to me you know that what i'm going to show you today is actually a really simple tool it really doesn't take a whole lot of effort like i said i can show it to you in just a few minutes um but it can really have a dramatic impact on your design it's a great way to in just a few minutes rough out the entire platform of your site and subdivision right and probably get you 85 of the way through to your your your grading design right with just a few minutes all right so with that said right it just takes a few minutes of time and what i'm going to do here to show you guys i'm going to go over to civil 3d i need to show you i've got a little basic uh this is just kind of an example drawing that we use in a lot of our classes here all right and it's just a corridor i just have a standard civil 3d corridor built right simple two-lane residential type road and if we want to go in and we want to actually start a subdivision along this side of the roadway right kind of on the left side of the screen here that you know what do we have to do from here well you know we're going to have to you know start at either the back of the curb or a set back line an easement line whatever i have here in the corridor work my way up to a high point all right that's a break and then down to the backyards and then eventually daylight back down right kind of trying to build kind of a reasonably flat platform where we're going to be putting in all of our you know homes in this subdivision so if i'm working with that i can start by extracting a feature line i'm just going to kind of start here because it's a little easier for you guys to see on the tangent here um i can just go in and i can just select on the corridor okay and one of the tools you have on the quarter is the ability to extract feature lines from the quarter comes up in the corridor editing ribbon and i'm just going to go and i'm just going to pick over on this side of the corridor and then hit enter and you see it shows me all of the different features all of the tools right that are available here and what i'm going to do is i'm going to uncheck all of these and i'm going to start with just the back of curve now remember you know when a corridor is built right what civil 3d really does is each point it cuts a section which you can see these dark blue lines here right to create the 3d model it goes from section point to section point it connects the center of road to the center of road the bottom a curve to the bottom of curve the back of the curve to the back of the curve and so on and it connects them using feature lines all right so what we're doing here is just extracting out those feature lines right as a separate entity that we can use as a start point for our grading design and what i'm going to do here i'm just going to make sure that i put this into my survey site here because i only have a survey site in this particular setup all right and i'm just going to go ahead and i'm going to extract that feature line out that's all i had to do right now you can see that right here i actually have see when i click on it a feature line you see it's highlighting the feature line and just so we can see that a little bit i'll go to the feature line properties um generally i will name this just so i know it's my my control right so i'll just call it my back of curb right feature line and i'll put it on a different style uh just so we can see and i'll just set it for basic and you see that's just a different display style and which comes in as as blue okay all right and i'll just go ahead and say okay to that now the big thing i do want to point out here see this option when you extract the feature line from a corridor you have the option and i recommend you always leave this on to maintain a dynamic link so that the feature line will always stay linked and connected to the corridor and that's important i'm going to leave that on you'll see you know a while a little bit later all right so that you can see the blue line right that's the feature line that's been extracted out and you see it goes down if i highlight that you can kind of see it it runs around the entirety of the entire length of my corridor all right so all i need to do from here is i need to you know take that feature line and i'm going to use it as a basis for grading right so i'm just going to go in here and like i said i need to create a subdivision over on this side and i'm just going to do my grading objects i'm going to go to my creating creation tools right and i'm going to grade to a specified distance and when i go and i say create my grading it's going to ask me what site to put it in i'm going to put in my survey site because that's what i set that feature line into all right and i'm going to create a grading group now right now i'm not going to create a surface i'll do that at the end of the the presentation here today right but i'm going to take that feature line and that's my start point that blue feature line says what side do you want to grade to over here right are you applying the grating to the entire length yeah we're doing a subdivision so i'm applying this grading along the entire frontage of this 3d corridor so i'm going to say yes okay what distance all right so now it's about how far back am i coming from here to to the beginning point of my setup so i'm going to say you know based on my design control i'm going to come 25 feet from the back of curb and i want it to rise up at an eight percent grade a positive eight percent okay and it goes in and it'll create a grading object on that side there you go okay see that it's structured and built right up in here okay and you see how it's actually starting to create that three-dimensional grading object now i can continue on i'm going to grade to another distance so maybe that's my front yard i got that a positive eight percent slope now what i want to do is i want to create more of a break right this is going to be kind of the high part of the yard but i want to break here from this point i want water flowing back maybe down at like a four percent down slope towards the rear yard okay so i'm going to take that and i'm also going to continue grading to a set distance i'm going to offset that okay apply it to the entire length yes it says what's your your offset in this case i'm going to go back and say ah you know 75 feet i'm going to go 75 feet it says okay how are we going to slope that i'm going to put a grade of minus 4. so i want it to go down four percent from there right and you see it's going to just go in takes a second to process the grading object and you see now it's creating a four percent down slope and the last thing i'm going to do is i'm going to go up here and i'm going to change my grade and i'm gonna grade to a surface from here i need to daylight right right i went up eight percent down four percent so this back edge it's kind of floating out in space right now okay so i'm going to grade to a surface all right and i'm going again i'm going to pick the feature line grading objects at the top and bottom create feature lines i'm going to use this feature line right i'm going to grade along the entire length right and i'm going to go in i'm going to put in a slope right and i'm just going to use a three to one slope okay grading down to the surface all right and it's going down to my existing ground surface here for some reason it didn't do that i think i messed something up there i i think i didn't choose the surface first nope it's great i know what i just did there i had an issue maybe the i wasn't paying attention while i was talking let me do that one more time create the grading for some reason it wasn't liking this yes along the entire length we're gonna do it with a slope all right and three to one and three to one and come on all right for some reason of course something's not liking my my grading offset there of course because i'm trying to show you something but in any event it's it's not usually probably not going to slow it down here but you can usually take any feature line and just daylight it down all right but to show you what i have here like i said i started with the corridor and then i put it you know the slope going up the front yard and then the slope across kind of that the building envelope here if we're going to look at those in my object viewer right you can actually see what happened as i tilt that up let me kind of zoom in here a little bit so you can see it a little bit better and of course i'm getting a little drag from from the share so it's taking me i got to slow down my zoom come on there we go okay pan this over so we can see come on pan over all right and you can see exactly what happened right that i started right here at the corridor at the back of the curve and you see it's going up my eight percent then it's breaking down and normally like i don't know why i'm getting an issue here all of a sudden um i have no problem daylighting down from here so it daylights down to the surface at a set slope okay so right from here i can automatically build just in a few seconds with a few clicks i got my grading design all right and now from that grading design i'm just going to close my object viewer here close this out i it's very easy thing to go in and create surfaces right so corridors are easy right with a quarter we can just go in right and i can go ahead and create a corridor surface right and i'm just going to create a surface and add my top link data and i'll set the quarter extends as my boundary right rebuild the corridor and let it build the surface here it takes just a second all right and again because i'm doing the video share it's taking a little bit longer than it normally would but even so a few seconds right and there you go you can see i've got a surface with all my contours along the corridor right and i can do exactly the same thing with the grading group i can just go in here to the grading group properties and have it automatically build a surface and again it'll take a second and there you go so now you see i've got the surface for the grading group and i've got the surface for the corridor and now i can just merge those together into a single surface right i can just pick on the corridor surface and paste my grading group surface into that and just like that i have one single surface right so now i can go into my object viewer see it's fully contoured fully structured and you can see the 3d setup of the of this entire surface here right you can go and you can see the roadway and you can see the crown of the road you can see my curb line it's going up my front yards my building envelope running all the way down here and around all the way down right so it's an easy thing to go in and set that up right without any any major to do right and what's really nice about this right and why i stressed earlier about um the dynamic link between that feature line that we created right and remember that feature line is still here it's still on the back of curb here so what that means is that as i go in if the road corridor changes so let's say that you know the design change and we're going to take the alignment all i'm going to do is move the alignment in a little bit maybe up to there just picking a random location right then all i have to do is rebuild the corridor and remember that that there's a dynamic link a connection between that feature line i extracted and the back of curve here right and you watched it everything it's going to take a minute because like i said i'm doing a share here so hopefully civil 3d doesn't lock up and crash on because it's not liking all of the the setup that i'm doing all right but when i rebuild that corridor right it's going to the corridor is going to shorten down to this area and that feature line will do exactly the same okay and there you go it took a minute but now you see that it redid and it restructured and it redid my entire line now you can actually see all right yeah now it's showing that outer setup okay so you can see it's actually daylighting now if i go and look at the corridor i don't know what the display up display issue was before but it it is now actually going in and it is actually daylighting down on my on my surface there okay you can see the daylight on the back end all right but you see that it updated that whole surface right so that everything is tied so that as modifications or changes are made to the corridor right you see it redefined and reworked it all the way back up right all the way in to where i'm working down into my daylight structure okay so it's an easy way to be able to go in and do that and kind of in another set all right and another set of tools that you can do here something that we cover in our grading and our design classes is that we can actually go in because these are feature lines that we're working with right at the top and bottom a slope here all right i've got a feature line here right let me just go and i'm going to erase that surface real quick um you see that at the top and the bottom of the slopes here and it seems like i have another feature line there i got a feature line here and a feature line here that kind of defines my building envelope areas i can go in and i can just use those feature lines to define parcels right and then i can do you know a partial division frontage and it'll actually give me the side lot lines along my parcels already set at the correct elevations to slope and match up and down alright so a lot that you can do there it's a very very powerful set of tools right you can actually and like i said in just a few minutes get a full you know 85 grading design done on both sides of your road that's fully tied to your corridor design and then as changes are made to the profile the corridor the section of the road etc it's updating your grading to match right which is really really powerful stuff right so that's what i wanted to show you today so with that um i want to point out to you guys that i am uh i also am the host of the cattle call podcast um you guys can find us on all the major listing outlets if you want more information on general the world of cad and what's going on in it but most importantly uh question and answer time and i do see a couple of questions uh come in here um the first one is from jeff this is um when importing feature lines from a corridor is there a way to set the site for multiple feature lines at the same time yeah jeff if you saw when i when i brought up that that aspect i kind of had to turn off multiples okay when i actually went and i went to do the the extract feature line on that just do this real quick let me see if i can find it go back to civil 3d all right when i went to the corridor right and i select the corridor when i go to extract the feature line you know i just go in here and just pick whatever i just pick a location and hit enter you see i can extract all of these feature lines at once just by leaving them checked i unchecked and did just the back of curve but yeah you can extract all of the different ones all at once no problem okay and another question from jeff is there a way to set the default site layer and style uh when importing the feature line from a corridor um yeah the the feature like i said when i'm when i'm doing that extract right all of your standard setup and properties right that you're working with here see over here where i can set the site here the style the layer right pay items all of the standard default settings can all be modified for each one of these right here in this dialog okay or you can go back in like i said after the fact and and restructure those okay all right and i think with that right we're gonna wrap it up here i don't see any other questions coming oh i got another question from jeff uh how do you change the site when you import them yeah it's just yeah like i'm saying jeffy you're just going in and you're just going to go in extract the feature lines off of this and all you have to do here is just click on the site and just change the site right there you can just change it okay all right and that's the way that it works okay all right and uh yeah and you do have to do those individually you have to do each one one at a time um all right so i think with that all right just remind you guys um you can hit our website at zentekconsultants.net or you can reach out to us at any of the contact information up there sales at zentekconsultants.net um and if you like this tip and you think it's useful all right and you want to get more info on it and details uh like i said we offer tons of classes and and training on civil 3d and how to use all of those tools right so you guys can just go ahead and check us out and hopefully we can get you into even more step-by-step informational processes right other than that thank you guys for joining today hope you all enjoy the rest of your day bye

Channel: ZenTek Consultants

Views: 1,424

Keywords: autocad civil 3d, civil 3d, civil site design, civil engineering, civil design, land survey

Id: 5VlQwQRioFc

Length: 17min 9sec (1029 seconds)

Published: Thu Oct 01 2020