Revit Structural Framing - Cut Rafter at Ridge Beam Revit Tutorial (Two Methods!)

[Music] hey everyone jeff here also known as the revit kid today i have a quick tutorial that i think some people will find very useful we're going to talk about when a joist meets a ridge beam and how to make the the joist automatically clean up to that ridge beam it could be wood for wood framing but it also could be for cold form metal or even even steel framing depending on what it is so i want to thank chris broda from the bim after dark community for asking this question for those of you not familiar with what the bim after dark community is it's a private community with courses office hours and uh general news feed with chat and all kinds of good stuff you can see here there's a whole bunch of of chats that are going on right now and questions and if i pull up if i search for ridge you can see here's the question from chris and as you can see uh here's the condition she's trying to create and then we work through uh myself and other members help help her work through the problem so if you've ever sat there and had a revit question and wasn't sure who to ask or really need an answer fast bim after dark community is the place for you so if you're interested head on over to community.bimafterdark.com right now i am offering a 14 day free trial so you can check out all the content all the courses join an office hour reach out to me and have a good time so hopefully i'll see you guys in there again that's community.bimafterdark.com so let's jump into the tutorial right now what i have here is a revit file it's got a roof with a nice 912 pitch to it and i've loaded in a dimensional lumber framing so if i go under beam you'll see i have 2x4 up to 2x12 i thought this was a cool opportunity to show you um how to just model a couple basic structural things and some interesting tips on that so i'm going to click beam i'm actually going to put my ridge beam in so i'm going to go down i'm going to do a 2 by 12 and i'm going to i'm going to do by line and there's lots of ways you can model this you can model it with a reference plane you can model it with a level et cetera you could offset it from a level whatever you want to do but this is kind of a cool trick if you check the box here that says 3d snapping right in the middle and then you select the middle of the ridge you'll see you have let me zoom out a little bit you have this ridge beam that actually is stuck to the ridge itself i know it's rotated i'll show you that in a second but the cool thing about it is because it's 3d snapping if i pull this up and pull it down you'll notice that the ridge beam stays there so how do we make it vertical like we would most likely want it to be i'm going to select the ridge beam and where it says orientation notice this is normal if i flip this to horizontal guess what we got ourselves a horizontal beam and it actually moves up and down with it pretty cool right so we want the ridge beam in there first because in order for this technique to work ideally you want to use selecting your support beam for the beam system this could work the same technique could work on individual joists individual beams and connections but i'm just showing you with the beam system uh the typical setup so now we're gonna do our joists we're gonna do our ceiling or our rafters i guess in this case in this case so our roof rafters i'm gonna click beam system and the first thing i'm gonna do is i'm gonna select right here where it says pick supports and then i'm going to select that one beam so i'm going to start right there so i know that that beam that we just put in our ridge beam is one of our supports now if you had other beams others framing in the in the project you could select those because we're just using the roof i'm actually going to pick the edges but because this is a roof a roof rafter system i'm going to set my work plane to the bottom of this roof so i'm going to click set i'm going to say pick plane so i'm going to select the bottom of this roof so now if i turn on show work planes you can see i'm drawing essentially on the bottom of that roof plane okay but then all i'm going to do is i'm going to pick edges and i'm going to select around my roof let me turn off show here i'm going to use tr on my keyboard for trim and i'm just going to trim these up so we have a nice rectangular sketch you can see it there and then i'm also going to change my direction so right now if you see these two lines here anyone not familiar with beam systems um these two lines are telling me the direction of my of my rafters which is in the horizontal direction we want them vertical so i'm going to click beam direction i'm going to select this guy so now they're going to go in that direction which is what we want i'm going to change these to 2 by 10s and i'm going to change them to a 2 foot on center i know probably it's going to be 16 inches but i don't feel like seeing that many beams in fact i might even go to three feet for now and then i'm going to click finish and so now i have my roof a little transparent so you can see it so if i zoom in you can see we have all of our joists here and what's really neat about this one before i even talk about cutting these is if i move my roof pitch because of the way i've built this you'll notice everything actually flexes with it which is super cool see if i go down here this flexes with it looks like it's going off this ridge beam is going off a little bit and that's okay so now what we want to do is this is the condition we're trying to fix right we want to go from this to something clean so how do we do it a couple different ways the way i'm going to show you today is using a tool that exists inside of revit for structural framing which is coping okay and so coping if you select any structural framing element in revit you'll notice there's a little option over here that says cope and what it does is it and actually i'll hover over it so you can see it's going to cope the beams together so it's going to join the beams together it's going to try and fit them however the family wants them to be all right so now before we before we cut these rafters using the coping tool um what i want to do is i just notice that this ridge beam isn't really centered so it's not necessarily let me go to the front view here not necessarily a great example of exactly what the conditions will be so i'm going to select this and i'm going to move it not really sure why it jumped off the line but that's fine so i'm going to move it so it's centered so let's move it down off of that line so it's a little more accurate you know i don't know what this is we'll just say half inch for now so i'm going to go in my z offset negative half inch and we could probably go a little more but that's all right negative let's do 5 8 or something i don't know whatever but i don't feel like getting in and detailing that but you get the idea i want this to be a little more realistic because those of you trying at home may come up and be like well my beam didn't go through so i want to show you what happens if it doesn't so if it doesn't go through it can make it a little more challenging because it won't it won't cope it won't cut unless it's it's going through this structural beam so the first thing we're going to do is we're actually going to select all these rafters so i'm just going to select them all i'm going to go to filter joist and what i'm going to do is i'm going to change a setting here called the end join cutback notice how there's a start extension there's an end join cutback and so that's the joining of these rafters to their structural element and so if i if i was to put this as a positive value it's actually going to go away from the element so i'm actually going to do negative let's do one foot for now and now you'll see they all go through the ridge beam and that's what you want okay so now it's time to cope them so when we do is select one of the one of the raptors i'm going to select cope i'm going to select it again i guess i could have went to modify cope first but that's okay select the rafter again make sure multiple cut is selected then select the ridge beam and as you can see there it is there and then just continue down the line and you can select all of your ridge beams until you've got them all cut and so now if i go here and i look at this thing straight on you'll see i've got myself some ridge beams that are cut and cleaned up now you're probably saying well uh the distance is one inch that's because there's a setting here where you can modify it and you can say um you know i want the coping distance to be zero half inch etcetera etcetera um so there you have it that's how you would uh make a a structural beam uh in a joist or rafter connect on an angle and if i move this is what's pretty cool about this if i move this you'll notice they're all updating with it which is pretty awesome so that's the coping method to cutting these these beams so the second method um which maybe you'll find a little easier without modifying the family there is obviously a method where you can make the family have an angle but the second method is using a reference plane and so what i did is i un i undid the coping i'm going to go to my south elevation view and you can see here's my roof and here's my rafters if i just draw a reference plane here so rp on my keyboard reference plane i can actually i can say cut under modify i can select one of my rafters and i can select the reference plane actually i can just continue on since i have multiple cut and i'm just click click click clicking them all um and then if i go to 3d you can see it's actually cleaned up pretty nicely using the reference plane so if if that coping method wasn't working for you there's there's you know this method which could work as well uh the downfall with this method is that you're relying on the reference plane so you know if this moves it's obviously going to move the cut if someone deletes the reference plane it's all going to go away so so those are two methods uh one method is coping so you simply select the beam uh select cope and then cope it with the rafters and the second method is a reference plane just draw a straight line use uh modify cut geometry select the reference plane select your rafters and you're good to go so hopefully that was a good tip for you guys and i hope it helped today uh thank you chris for asking the question in the community if you enjoy this channel please subscribe here on youtube we had 45 000 actually today which is really cool so let's try and get 50 000. thanks guys and i'll talk to you soon

Channel: TheRevitKid

Views: 30,686

Keywords: revit tutorial, revit, revit 2022, revit structure design building structural model, revit structure, Revit Structural Framing - Cut Rafter at Ridge Beam Revit Tutorial, revit structural framing, cut rafer in revit, cut rafter at ridge beam in revit tutorial, BIM, building information modeling, architect, structural engineer, AEC, revit structural analysis, revit structural modeling, CAD, revit framing, revit beam systems, revit ridge beam, wood framing in revit

Id: lBGaMTiw7tc

Length: 10min 4sec (604 seconds)

Published: Thu Aug 26 2021