How to Design Bathroom Sanitary Piping in Revit MEP: Adding Toilets, Pipes, and Urinals

In the previous video, we went ahead and got our bathroom lavatories populated. Now we're going to go ahead and start getting our toilets in, our toilet pipes, and our urinals here.

So what I'm going to go ahead and do is we're going to kind of do the same thing running off that main run. So I'm going to go over to my Systems tab. I'm going to go to Pipe.

We can go ahead and save if you haven't saved recently. Always want to be saving. Inherit elevation—I'm going to change this to a four-inch pipe.

I'm also going to change it to eighth-inch over foot for my slope. Again, that's kind of that breakpoint right there between the three and the four-inch. So you always want to check those.

And then here, I'm going to inherit elevation from the four-inch pipe. I can come here. Let's say I come here.

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And what I'm going to end up doing is I'm going to kind of run down this here. And that's also so I can get a stack in here for the second floor. I'm going to use this kind of as a shaft space here.

So what I'm going to go ahead and do is I'm going to go ahead and sort of go out here, come over, get along that edge, and then run this pipe down to here. There we go. And I can 45 this off and then come over.

I'm going to do inherit elevation. Come here, 45 off and over. And it doesn't want to give me the connector.

I could connect to the connector here if I really wanted to and hit OK. Let's see what happens. It doesn't want to do it right now.

Probably because—let me go ahead and let's try retrying this. Inherit elevation—you probably just come straight off this, too. Let's see if it wants to do it.

So pipe here, here. Oops. Inherit elevation here.

Here, here, here, and inherit elevation. And we can always adjust these later on. So I'm just kind of getting the pipes in there for right now.

Inherit elevation. The automatic connection—I have found that it doesn't work very well. We'll talk about connecting fixtures and stuff in here soon, but it doesn't tend to work terribly well.

I think I forgot to do inherit elevation there. So I think I'm getting some extra fittings because it's having to do a little bit more work. There we go.

So I can grab these entire things and I could move them if I want to. So I'm just kind of—you could tab-select. Let's see.

Boom. And if I—there we go. We'll just get it into there for right now.

Tab-select. So I've kind of found that this is the best way to do these kinds of things—just get the pipes run to where they're going to be. I know that we need to connect them in eventually, but a lot of times getting those squared away right off the bat can be rough.

And then I can kind of select this and I can move this down just so I can get in the right location. Boom, boom, boom. Cool.

Let's do the other side. So I'm going to pipe four-inch, eighth-inch slope, inherit elevation. Same kind of thing here.

I'm going to try to run this right along this wall ledge so that I'm able to get into this chase. Boom. And I can always grab this and, like, say, slide it back if I wanted to.

Depending upon your zoom, it will change how much you actually move it left or right. If you zoom in really close, it moves a little bit in the real-world. If you zoomed way out, it'll move farther.

So pipe, inherit elevation, slope up because we're going away. Again, I'm just going to kind of go ahead and get these drawn in, and then we'll adjust the specific location of them later on. Sometimes I’ve found with Revit MEP, I'm just going to cancel.

I'm just going to put that pipe in there for now. Sometimes I’ve found with Revit MEP, it's just easier to just get it in there initially and then sometimes adjust it. It just kind of depends.

So you'll kind of work on the workflow. The connector on this should be a little bit smaller. What is this out? Let's see here.

What do we got? Unfortunately, sometimes the connectors do this. I hate it. Let's see.

Create pipe. So it's a two-inch. Is this the waste? Hold on, let me zoom extents.

Okay. Sometimes these connectors get a little weird, but I believe this is a two-inch connection for that. So pipe—I am going to change my pipe to a two-inch.

Slope up. We need to go to a quarter-inch equals a foot. Inherit elevation.

Because these will be a little bit smaller. Inherit elevation for the urinals. I don't think I had enough of a length there.

So you got to make sure you have enough length in that. And then obviously we have to get all these fittings and everything. Inherit elevation.

Boom, boom, boom. There we go. And then when we go to connect these fixtures and everything, we'll take a look at where the connectors are and that will kind of help us to determine how we want to tie all that in.

There we go. Now I want to go ahead and put a vertical riser in these. To do that, it's best to do it in section.

So I'm going to grab it and rotate it 90 degrees. I'm going to come say about here and let's look at this in section. So bring your working section over.

So what I want to go ahead and do is I want to get up to this location so I can go ahead and start plumbing for those also. So what I want to do is I could select this. I'm going to, like, pick here.

I'm going to drag, create similar, pick here, drag up. And I'm going to make sure that I'm kind of in the interstitial space here. And then I can change my slope.

There we go. And I can run this guy over. I'm going to keep looking at it.

Now, the problem here is that if I wanted to extend this pipe, if I just drag it, I'm going to ruin my slope. Notice how I changed my slope. When I do this with sloped piping, I want to draw a pipe, and that'll give me that there.

Maybe we need to lower it just a little bit. There we go. Let's take a look at that in plan.

Nice. So it's in this area here, stack in there. I'm going to go come down here and do the same exact thing.

So I could select this, create similar. I'm going to go ahead, pick here, go up, make sure my slope is quarter, eighth of an inch. And then I'm going to just draw this out.

And there we go. Again, if you need to lower or raise it, you know you have the ability to do so here in section. Great.

This is all looking really, really good. Cool. We've established those risers there.

Everything there is good. Let's go ahead and take a look at our 3D. We've added quite a lot of sanitary piping into our model, and we will keep it going.

We have a couple of other things to go ahead and do. Actually, let's go ahead and quickly start the lavatory ones. If I look at where the lavatory stacks were, where I had those, I can go ahead and delete that fitting and everything—remember those pieces I took up.

So there's that. I deleted a little too much—just the fitting and the horizontal. We don't want to delete the vertical.

I'm going to go back to my Plumbing Level One. I'm going to grab this section and bring it over here. Again, I'm going to bring this down a little bit.

I want to run this main. It's going to be actually in the wall for right now. We may change it later on to bring it out of the wall, but there's that.

So let's see what pipe size. This is a four-inch. Yep.

So I want to draw a pipe, come out here. And then I'm going to go back to my Plumbing One and come over here with my working section because I want to move this stack and let's maybe grab this guy and bring it down a little farther, kind of away from everything else just to clean up that area. There we go.

Bring this down, draw a pipe, and there we go. Let's go ahead and save the file and we'll keep going.