Join Brian Myers for an in-depth discussion in this video Creating exterior walls, part of Designing Home Plans with Revit.
- Revit has a variety of wall types, and a wall type is how a wall is constructed with the materials and the thickness of those materials. We can see the wall types if we go to the Architecture tab and select on the picture of the wall. Underneath Properties on the Type Selector list, we have the default wall type for this project, which is a basic wall, generic eight inch. to change that wall type, we can select the Type Selector list and then scroll up or down in order to be able to see the different kinds of wall types that we can choose from.
What I like to do, though, for this project is create two new wall types, and to create those wall types, I usually like to start with a generic wall that just has one material associated with it, and a good example of that would be the generic six inch thick wall. So let's select on the basic wall, generic six inch. Then click on Edit, Type because we're going to edit the type of wall that it is. Now when you open this up, if you happen to have a view that looks like this view, with the Type Properties dialogue box and no preview over on the left hand side, what you need to do is select on the Preview button on the lower, left hand corner, then, I usually like to work inside of wall section view, so select over here in the wide area, come down here to View and Floor Plans, and then click Section in order to see this wall in a section view.
Now the next thing I like to do is create that new wall type, which, for this wall, will be an exterior siding wall. To create the new wall type we need to duplicate an existing wall, this generic six inch, so if we select on the Duplicate button, and then give it the name of Exterior-Siding and click on OK. Now next to Structure underneath Type Perimeters, there's a big, gray Edit button.
Select on Edit next to Structure because we'll edit the structure of this wall. Right now we can see that there's only one structural layer associated with the wall, and the material is currently listed as by category. That means that it is just a generic wall without actually any materials associated with it, and the material thickness is six inches. Well, since this wall will be an exterior siding wall, what I'd like to create is a siding layer, another layer for plywood sheathing, and then on the interior side of the wall, a Gypsum wall board material.
Since we're discussing adding all these extra layers and material, let's select on the insert button three times. This provides us with six total layers for the wall. Now, one of the things you'll notice is we have core boundaries, and both of them are grayed out, and, also, both of the thicknesses for the core boundaries are zero feet, zero inches. Well, your core boundaries will always be grayed out, and they will always have zero feet, zero inches for the thickness. The reason is is that they're not actually layers of material, they're lines inside of the wall.
Now when I say lines inside of the wall it means it would be the finished face of the structural part of the wall. Revit, by default, doesn't actually know where the finished face of the structural parts of its walls are located at, so the core boundaries are used to define those areas inside of the walls. Now that we have these extra layers of materials, what I'd like to do is move two layers and material to the exterior side of our wall, then move another layer of material to the interior side of our wall, so with number 2 highlighted, and if not just click on the number 2, select on the up button.
Do the same thing for number 3, select on up, then for number 5 click on number 5, and select down. So now we have the structural members in the center of the wall between the two core boundaries, and then we have two layers of material on the exterior side of the wall, and one layer of material on the interior side of the wall. What I'd like to do next is give some thickness to each layer of material. For the most outer layer of material, which will be siding, let's make that thickness 1/2 of an inch.
For the next layer of material, which will be plywood sheathing, this should be 7/16ths. For the structure, which in this case is actually going to be a wood stud layer, I want this to be a two by four wall, so that's three and a half inches in thickness, so 3 space 1/2 inch. Then for the interior side, and this will be that Gypsum wall board, six inches is way too thick, so let's make that material 1/2 of an inch in thickness.
Once you've done that, the next thing I'd like to do is come over here to Function and adjust the function of each one of these layers of materials for the wall. So up here at number one, where we have Structure 1, click, and by the way, when we've done that, if you look over here in the preview area, we can now see each one of those layers of material building up inside of this wall. In fact, if we want to zoom in, we can do that by just clicking inside of the white area, and then spinning the wheel of the mouse to see each layer of material on each slide of the wall.
Now for the function, the siding is not structural. It doesn't support any weight, it just hangs on the outside of the building, so because of that it's an exterior finish material, so if we click where Structure 1 is at, click the down arrow, let's make this Finish 1 with a little 4 next to it. For the next layer of material, click, click again, and let's make this be a substrate layer. Layer number 4 is a structural member, so we'll leave it at Structure, and then for 6, click, click the little arrow, and make this be Finish 2, 5.
Revit likes to have any of the smaller numbers, like the ones and twos closer to the core boundary. Revit also likes to have any number like a four or a five closer to the outsides of the wall, so you'll find that when your constructing walls, you should always put the smaller numbers to the inside and then the bigger numbers to the outside. In this example, we can see that we have a Finish 1, 4 on the exterior side, and I find that Revit really likes to have those exterior finishes as being number 4's.
For the interior finishes, number 5's tend to work a little bit better for Revit. The 1's, 2's, 3's, 4's, and 5's also affect how the walls clean up with one another, if they cross over one another, so it's important to assign the appropriate function, so that when the walls touch one another that they clean up, and they actually come to the correct corners the way that they should when those materials are suppose to meet one another. So once you have your functions in place, the next thing we need to do is adjust our materials.
This Layer Number 1, which is on the exterior side, this is our siding, so click where it has by category, and then click the little button with the three dots. This material will be a siding material. In fact, it will be called Vinyl Siding. Since it starts with a V, let's scroll down to where we can find our Vinyl Siding and select that off of the list. The substrate layer, that's a plywood layer, so let's look for Plywood Sheathing on our list.
Once you find Plywood Sheathing, select on that, click on OK. For the structure layer, it says By Category. This is a wood stud layer. Let's look for Wood Stud Layer down at the bottom. Starts with a W. Click on OK, and then we have our Finish 2, this is a Gypsum wall board layer, so By Category, click on the box, and we'll look for Gypsum Wall Board, then click on OK.
Now that all of this is in place, we can see that these materials are now the materials we have on the outside of our wall. If we come over here and click on OK, we now have an exterior siding wall. I like to create one more kind of wall based off of this exterior siding wall. This one will be a Type X wall, which means it will be a fire rated wall. Well, technically, all walls are fire rated. This wall will be a little bit more fire rated because of the type of board that we'll have on the wall.
So let's continue to use the exterior siding, and let's make a duplicate of this wall, and instead of Exterior Siding 2, we'll just call it Exterior-Siding Type X and click on OK. The next thing I'd like to do is, once again, select on the Edit button next to Structure, and what we'll do is we'll change this Gypsum wall board layer to be a type x board, which is 5/8ths of an inch thick, as opposed to a half of an inch thick.
So change the 1/2 of an inch to be 5/8ths of an inch. Then, if you click somewhere in one of these other thickness categories, it may be very hard to tell, but we have gained a little bit extra thickness to this interior Gypsum wall board material. In fact, if we zoom in, we may even be able to see that this material, now, is thicker than this material over here. They both were at a half an inch, but now this material is a little thicker at 5/8ths, and what I'd like to do is come down here to OK, and we can now see on the Type Selector list that we have both an Exterior-Siding Type X and an Exterior-Siding Wall.
If we click on OK, we'll also see that underneath Properties on the Type Selector list here, that we have that Exterior-Siding and the Exterior-Siding Type X walls that we can choose from to start drawing in our walls.
- Setting up the project
- Creating walls
- Modeling the foundation
- Adding doors and windows
- Creating floors, slabs, and porches
- Placing columns and beams
- Designing a roof
- Creating kitchens and bathrooms
- Placing utilities
- Adding lights and wiring
- Creating interior and exterior elevations
- Creating standard and 3D views
- Creating and printing sheets