From the course: Revit: Multifamily Housing

Creating foundation A - Revit Tutorial

From the course: Revit: Multifamily Housing

Start my 1-month free trial

Creating foundation A

“

- [Instructor] In this series, I'll draw the foundation in two different ways. The first way will be for a single residential unit, and we'll begin by just drawing in the foundation walls. The second way will be to draw in the foundation walls of all the other attached residential units to this initial residential unit that we're drawing. So let's begin by drawing in the foundation just for that first residential unit. Underneath the architecture tab, one of our options here is wall, but currently under the project browser we can see that we're at the A - First Floor level. Well to draw this in I really want to be at a lower level. So, what I plan on doing here is just coming in here to this A - Foundation Level by just double clicking on A - Foundation under the floor plans, then under the architecture tab clicking on the picture of the wall. Next, under properties here on the type selector list, the kind of wall that we'll do on the outside of this building will be a 12 inch thick foundation wall. So select on the foundation 12 inch concrete, then underneath the properties, start by looking at the base constraint. Well the base constraint means the bottom of the wall, and I'd like the bottom of that wall to go down to A - Top of Footing, and that makes sense because the foundation wall will be sitting at the top of the footing. For the top constraint, I want it to come up to the A - Foundation Level. Next, for the location line, I'll be drawing this wall in around the perimeter of the outside of our building. So let's go to the finish face exterior. Next, here inside of this view I'm just going to click once and then start to draw my wall straight down. If we zoom in here, what we're really looking at is that we can see that there appears to be over on the left hand side, kind of a thicker wall and then a thinner wall over on the other side. What this is telling me is that where we'll have the brick ledge associated with this foundation wall currently is on the inside of our building because I want the inside of our building to be over on this side, so to flip the wall I'm just going to hit the space bar on the keyboard. Now, if I look at the location line I can see it's the core face of the interior instead of the core face of the exterior and that's not what I want, so I'm just going to hit the escape key once on the keyboard, click and then change it to core face exterior. I'll click once, come down, hit the space bar to flip the bar over, now I can see based off of where that line is there in the middle of the wall that the actual brick ledge, whenever it comes time to draw that in, is on the outside edge of the wall, and the thicker part, the more structural part of the wall, is on the inside. So that's where we want it to be at. Now I know that this wall needs to be 44 feet, four inches in length, so as soon as I begin to move my wall down and I get this temporary dimension in place, I'll type in 44 feet four, hit the enter key on the keyboard, zoom out, I'll move over in this direction. I know that if I move over in this direction that the thickness of this wall is 12 inches, so it's a foot thick. I also know that I need to continue to move over in this direction 22 feet, 11 and a half inches, so I need to add that 12 inches which is the thickness of the wall to the 22 feet, 11 and a half inches, which means I need to move in this direction at least 23 feet, 11 and a half inches. So what I'll do is just type in 23 feet, 11, now I can either do .5 or just do a space 1/2 inch. So now I have my second wall in. Now the next wall happens to be just 10 inches thick, and I know that to be the case, so I'm going to hit the escape key once on the keyboard, come up here to my basic wall foundation and then select on the foundation 10 inch concrete. I'm going to click here, start to come up. How far up does it need to go? Well it needs to go up 44 feet, four inches. So I'll move straight up in this direction. You'll notice the 44 feet, four inches lines up with the wall there on the outside, so I'll just click at that point. Now I also know that this back wall here, well it depends on where we're actually looking at here on the back wall, in some locations it's going to be a framed wall, which is just eight inches thick, and in other locations it's going to continue on that one foot thick wall. Well I'm not going to worry about the framed wall right now, all I'm going to do is begin by just changing my wall to be that 12 inch thick foundation wall. Come in here on the outside, click, move over like this, hit the space bar to flip it over to the other side, come straight over, come here to the intersection of these two, hit the escape key and now we can see that I have this wall going all the way on across. And now I have that foundation wall drawn in here. Now I will say that ultimately I will be replacing part of this wall with a thinner wall, and that'll be an actual framed eight inch thick wall, but I'll worry about doing that just a little bit later on. Now what I want to do is take a look at this in 3D, so I'll select on the default 3D view icon. I'll zoom in and here we can see those foundation walls going all the way on around the perimeter of the building. If I select on one of the corners here of the view cube it'll spin everything around. I can zoom in like this and while I won't keep this next setting I do want to show you what it can do and that is if I select on this wall right here we can see that we have some properties associated with it including an actual base offset that we could do, and also a base extension that could be done. Well to make a long story short, what we can actually do is that we can make adjustments to either the base or the top of the wall. In this case, because this is the top of the wall, it won't be a base extension, it'll be a top extension, which would allow us to drop down the top of the wall whatever distance that we specified. If I type in negative four inches, I zoom in here, see how this is now dropped down four inches from where it was at? If I change it to be zero notice how it goes back up again to the elevation where it needs to be at? So, due to the fact that we've taken the time to actually make these walls adjustable, this very specific wall has a top offset which allows you to drop the outside edge of the wall so that it can form a brick ledge. If you don't need that brick ledge, just simply set that setting to zero and then you'll get a shape similar to what you see here.

Contents