Add exterior walls

00:07

INSTRUCTOR: You could start adding walls

00:09

any time you have enough information to place them.

00:11

In projects with a column grid it's

00:12

usually convenient to lay out the grid first, and then

00:15

use that to help you place the walls.

00:17

But you can start adding walls right away instead,

00:19

if you wish.

00:20

There's really no one right, or wrong way to do it.

00:22

In this example, we're going to lay out

00:24

the exterior walls of our building,

00:26

and we're going to use the column grid to help us do that.

00:29

So to get started, let's go to the architecture tab here,

00:32

and click the wall command or you can type the letters WA.

00:37

Now, the first thing we want to look at is the kind of wall

00:39

that we're drawing with.

00:40

So if you come over to the Properties palette

00:42

at the very top, there is a dropdown menu,

00:44

and this is called the type selector.

00:47

When you click that, it will expand open, and give us

00:49

a list of all the available types

00:51

that we have to choose from.

00:52

Now, it defaults to generic 8 inch.

00:54

We want something just a little bit thicker,

00:56

so we're going to choose generic 12 inch.

00:59

Now, all this means is generic wall is a simple wall with one

01:03

material, and that material happens to be 12 inches thick.

01:06

So it's a good sort of placeholder wall.

01:08

The next thing we want to consider

01:09

is, how we want to draw the walls.

01:11

Do we want to do them line by line,

01:12

do we want to do the shapes, rectangles, circles, arc,

01:15

and we have all those choices here in this little toolbox.

01:19

So for this example, drawing with rectangles

01:21

will be convenient.

01:22

Because we'll be able to click two opposite points

01:25

along the diagonal of a rectangle, and that

01:28

will create four separate walls for us.

01:30

Now if I start clicking right at the point

01:32

I want my walls will be right on top of the grid lines.

01:35

So what I want to do is actually offset them

01:37

away from those clicks just a little bit.

01:40

So the offset that I'm going to put in is one foot,

01:43

and then let's highlight the intersection of grid A1.

01:47

Notice that we'll highlight both grids,

01:49

and it'll put a little X there indicating the intersection.

01:52

That's an object snap, and Revit will snap directly

01:56

to that point with exact precision.

01:58

So go ahead and click right there,

01:60

and then start moving down into the right along a diagonal,

02:04

and you'll see the rectangle start to form.

02:06

Then what we want to do is locate

02:09

the intersection of G and 6, and click

02:13

to place our second point.

02:15

And we end up with four walls in a rectangular formation.

02:19

Now we're going to stay in this tool

02:22

and keep all the same settings, and draw a second rectangle

02:26

from the intersection of D6 over to the intersection of H9,

02:32

and then one more from the intersection of E9,

02:37

down to the intersection of J10.

02:41

I'll click the Modify tool here to cancel the command,

02:44

and that's the basic layout of walls that we need.

02:48

Now next, we need to do some cleanup.

02:52

Some of the walls may not be in exactly the correct locations.

02:55

So we can start making modifications to it.

02:58

So the idea in Revit is you do a rough sketch first,

03:02

that's close to what you want.

03:04

And then you come back and you massage it and you refine it

03:07

until it's more correct.

03:09

So what I want to do is take this wall right here,

03:12

that's to the left of grid 6, and I want

03:15

to move that over a little bit.

03:16

Now there's a bunch of ways we could move things in Revit

03:19

but one of the simplest ways to do

03:21

it is to use these dimensions that appear on screen.

03:25

So notice it there's a long dimension here,

03:27

and a short one here.

03:28

Let's highlight the short one, and activate that value.

03:31

It's currently 2 feet, and what I want to do

03:34

is type in a new value of

03:39

And when you do it'll move that wall over

03:42

to match the dimension that you called for.

03:45

Next, I want to eliminate these internal pieces of the walls,

03:50

and end up with just a clean outer shape.

03:53

And we can do that on the Modify tab with this trim

03:57

and extend to corner tool.

03:59

The keyboard shortcut for this is TR.

04:01

So the way this works is you run the command,

04:04

and it says, select the first line or element that you

04:07

want to trim and extend.

04:08

And it says, click the part you want to keep.

04:10

That's really important.

04:12

So in this case, I want to keep the part to the left-hand side

04:17

of this lower wall.

04:18

And then it's going to repeat that prompt with the same click

04:22

the part you want to keep.

04:23

So this time I want to pick the lower

04:26

portion of the vertical wall.

04:28

And notice that it trims off the excess on the other side.

04:33

So let's repeat that over here.

04:35

I want to keep the vertical part above,

04:37

and I want to keep the horizontal part to the right.

04:41

So real easy to use that tool to create an L condition that

04:46

joins up two lines of the walls at a point,

04:49

and trims off the excess.

04:51

In the case where the walls are too short,

04:53

it will extend them to make that connection.

04:57

Let's move on to another trim and extend tool here,

05:01

trim and extend single element.

05:04

Now, the reason I want to use this one this time is

05:07

on the other two rectangles the condition

05:10

is a little bit different.

05:12

I do want to keep some of the interior lines.

05:16

So let's zoom in a little bit to make

05:18

this a little easier to see, so I just sort of roll

05:20

my wheel a few clicks.

05:22

Here, we're asked for a boundary edge first,

05:26

and then the element we want to trim or extend.

05:28

So here you can pick either side of this horizontal wall

05:31

at the bottom as our boundary edge.

05:34

Then it's click the part you want to keep.

05:37

So I want to keep this lower portion of this line right

05:42

here, and when I click it, it will trim off

05:45

the excess up at the top.

05:47

So let's repeat this over here to the right.

05:49

Pick either side of the vertical as the boundary,

05:52

and then I want to click the right-hand side,

05:54

because that's the part I want to keep,

05:56

and it will trim off the little excess on the side.

06:00

So let's click the Modify tool to cancel out of there.

06:02

Now, I'm going to zoom back out slightly just so that we

06:06

can see the entire plan again.

06:08

Now, let's make some selections and adjust the heights

06:11

of some of these walls.

06:13

So one way that I could select the four

06:16

walls, and the small rectangle to the right

06:19

is to just simply Control-click all four.

06:21

Over here on the properties, it'll say walls, and then four.

06:25

Once I have those selected what I want to do next,

06:30

is go over to the Properties palette,

06:32

and in the unconnected height field

06:35

I can change the value of the height of these walls.

06:39

I'm going to type in 33, which is 33 feet and press Enter.

06:45

Now, you won't see the result of that change

06:48

here in the plan view, you will be

06:50

seeing that in just a moment when we switch to another view.

06:53

What I want to do instead, is show you a faster way

06:57

to make the selection than the Control-click method

06:59

that we just did.

07:01

Highlight one of the exterior walls

07:04

that we haven't changed the height of yet.

07:06

Press the Tab key on your keyboard.

07:09

Now don't hold tab down, just press it,

07:11

and notice that it reaches around the chain of walls Revit

07:16

calls this endpoint to endpoint and highlights

07:19

all of the connected elements in that chain.

07:22

Now notice it ignored the ones on the far right, because those

07:26

aren't touching endpoint to endpoint,

07:28

so that's not considered a chain.

07:30

In order to be a chain, it has to be touching end to end.

07:33

Now if I click the mouse, it will select

07:36

that entire chain of walls.

07:37

So notice that with a highlight and a tab, a single click

07:41

I was able to select eight walls, which

07:43

is much more efficient than control clicking eight times.

07:47

Now, that I have those selected, I'm

07:50

going to instead of changing the height directly here,

07:54

I'm going to actually associate the height of those walls

07:57

to one of my levels.

07:58

So I'm going to say that they go up to the roof level.

08:02

In addition to that, I want to give them

08:04

a small parapet at the top.

08:06

So you see here how there's a top offset?

08:09

I can type in a value there like 3,

08:12

and that will add an additional 3 feet

08:14

to the top of those walls.

08:17

I want to select the vertically oriented rectangle on the left

08:21

now, and lower the height down a little bit.

08:25

The easiest way to do that is going

08:26

to be to use a window selection.

08:28

So I'm going to start out here, next to A and 1.

08:31

Click and hold down the mouse.

08:33

Notice that deselects everything.

08:35

And then start making a box just big enough

08:39

to surround the rectangle on the left only.

08:43

And that will select four walls.

08:45

And instead of those going all the way to the roof,

08:48

I'll drop them down to level two.

08:50

But I want to keep the 3-foot top offset.

08:54

So now at this point, I want to check out

08:57

our progress, and the best way to do that is

08:60

going to be in a 3D view.

09:02

So I'll come up here and click our little birdhouse icon

09:04

to open up the default 3D view.

09:07

And now you can see the various heights

09:09

that we've assigned to all of the walls.

Video transcript

00:07

INSTRUCTOR: You could start adding walls

00:09

any time you have enough information to place them.

00:11

In projects with a column grid it's

00:12

usually convenient to lay out the grid first, and then

00:15

use that to help you place the walls.

00:17

But you can start adding walls right away instead,

00:19

if you wish.

00:20

There's really no one right, or wrong way to do it.

00:22

In this example, we're going to lay out

00:24

the exterior walls of our building,

00:26

and we're going to use the column grid to help us do that.

00:29

So to get started, let's go to the architecture tab here,

00:32

and click the wall command or you can type the letters WA.

00:37

Now, the first thing we want to look at is the kind of wall

00:39

that we're drawing with.

00:40

So if you come over to the Properties palette

00:42

at the very top, there is a dropdown menu,

00:44

and this is called the type selector.

00:47

When you click that, it will expand open, and give us

00:49

a list of all the available types

00:51

that we have to choose from.

00:52

Now, it defaults to generic 8 inch.

00:54

We want something just a little bit thicker,

00:56

so we're going to choose generic 12 inch.

00:59

Now, all this means is generic wall is a simple wall with one

01:03

material, and that material happens to be 12 inches thick.

01:06

So it's a good sort of placeholder wall.

01:08

The next thing we want to consider

01:09

is, how we want to draw the walls.

01:11

Do we want to do them line by line,

01:12

do we want to do the shapes, rectangles, circles, arc,

01:15

and we have all those choices here in this little toolbox.

01:19

So for this example, drawing with rectangles

01:21

will be convenient.

01:22

Because we'll be able to click two opposite points

01:25

along the diagonal of a rectangle, and that

01:28

will create four separate walls for us.

01:30

Now if I start clicking right at the point

01:32

I want my walls will be right on top of the grid lines.

01:35

So what I want to do is actually offset them

01:37

away from those clicks just a little bit.

01:40

So the offset that I'm going to put in is one foot,

01:43

and then let's highlight the intersection of grid A1.

01:47

Notice that we'll highlight both grids,

01:49

and it'll put a little X there indicating the intersection.

01:52

That's an object snap, and Revit will snap directly

01:56

to that point with exact precision.

01:58

So go ahead and click right there,

01:60

and then start moving down into the right along a diagonal,

02:04

and you'll see the rectangle start to form.

02:06

Then what we want to do is locate

02:09

the intersection of G and 6, and click

02:13

to place our second point.

02:15

And we end up with four walls in a rectangular formation.

02:19

Now we're going to stay in this tool

02:22

and keep all the same settings, and draw a second rectangle

02:26

from the intersection of D6 over to the intersection of H9,

02:32

and then one more from the intersection of E9,

02:37

down to the intersection of J10.

02:41

I'll click the Modify tool here to cancel the command,

02:44

and that's the basic layout of walls that we need.

02:48

Now next, we need to do some cleanup.

02:52

Some of the walls may not be in exactly the correct locations.

02:55

So we can start making modifications to it.

02:58

So the idea in Revit is you do a rough sketch first,

03:02

that's close to what you want.

03:04

And then you come back and you massage it and you refine it

03:07

until it's more correct.

03:09

So what I want to do is take this wall right here,

03:12

that's to the left of grid 6, and I want

03:15

to move that over a little bit.

03:16

Now there's a bunch of ways we could move things in Revit

03:19

but one of the simplest ways to do

03:21

it is to use these dimensions that appear on screen.

03:25

So notice it there's a long dimension here,

03:27

and a short one here.

03:28

Let's highlight the short one, and activate that value.

03:31

It's currently 2 feet, and what I want to do

03:34

is type in a new value of

03:39

And when you do it'll move that wall over

03:42

to match the dimension that you called for.

03:45

Next, I want to eliminate these internal pieces of the walls,

03:50

and end up with just a clean outer shape.

03:53

And we can do that on the Modify tab with this trim

03:57

and extend to corner tool.

03:59

The keyboard shortcut for this is TR.

04:01

So the way this works is you run the command,

04:04

and it says, select the first line or element that you

04:07

want to trim and extend.

04:08

And it says, click the part you want to keep.

04:10

That's really important.

04:12

So in this case, I want to keep the part to the left-hand side

04:17

of this lower wall.

04:18

And then it's going to repeat that prompt with the same click

04:22

the part you want to keep.

04:23

So this time I want to pick the lower

04:26

portion of the vertical wall.

04:28

And notice that it trims off the excess on the other side.

04:33

So let's repeat that over here.

04:35

I want to keep the vertical part above,

04:37

and I want to keep the horizontal part to the right.

04:41

So real easy to use that tool to create an L condition that

04:46

joins up two lines of the walls at a point,

04:49

and trims off the excess.

04:51

In the case where the walls are too short,

04:53

it will extend them to make that connection.

04:57

Let's move on to another trim and extend tool here,

05:01

trim and extend single element.

05:04

Now, the reason I want to use this one this time is

05:07

on the other two rectangles the condition

05:10

is a little bit different.

05:12

I do want to keep some of the interior lines.

05:16

So let's zoom in a little bit to make

05:18

this a little easier to see, so I just sort of roll

05:20

my wheel a few clicks.

05:22

Here, we're asked for a boundary edge first,

05:26

and then the element we want to trim or extend.

05:28

So here you can pick either side of this horizontal wall

05:31

at the bottom as our boundary edge.

05:34

Then it's click the part you want to keep.

05:37

So I want to keep this lower portion of this line right

05:42

here, and when I click it, it will trim off

05:45

the excess up at the top.

05:47

So let's repeat this over here to the right.

05:49

Pick either side of the vertical as the boundary,

05:52

and then I want to click the right-hand side,

05:54

because that's the part I want to keep,

05:56

and it will trim off the little excess on the side.

06:00

So let's click the Modify tool to cancel out of there.

06:02

Now, I'm going to zoom back out slightly just so that we

06:06

can see the entire plan again.

06:08

Now, let's make some selections and adjust the heights

06:11

of some of these walls.

06:13

So one way that I could select the four

06:16

walls, and the small rectangle to the right

06:19

is to just simply Control-click all four.

06:21

Over here on the properties, it'll say walls, and then four.

06:25

Once I have those selected what I want to do next,

06:30

is go over to the Properties palette,

06:32

and in the unconnected height field

06:35

I can change the value of the height of these walls.

06:39

I'm going to type in 33, which is 33 feet and press Enter.

06:45

Now, you won't see the result of that change

06:48

here in the plan view, you will be

06:50

seeing that in just a moment when we switch to another view.

06:53

What I want to do instead, is show you a faster way

06:57

to make the selection than the Control-click method

06:59

that we just did.

07:01

Highlight one of the exterior walls

07:04

that we haven't changed the height of yet.

07:06

Press the Tab key on your keyboard.

07:09

Now don't hold tab down, just press it,

07:11

and notice that it reaches around the chain of walls Revit

07:16

calls this endpoint to endpoint and highlights

07:19

all of the connected elements in that chain.

07:22

Now notice it ignored the ones on the far right, because those

07:26

aren't touching endpoint to endpoint,

07:28

so that's not considered a chain.

07:30

In order to be a chain, it has to be touching end to end.

07:33

Now if I click the mouse, it will select

07:36

that entire chain of walls.

07:37

So notice that with a highlight and a tab, a single click

07:41

I was able to select eight walls, which

07:43

is much more efficient than control clicking eight times.

07:47

Now, that I have those selected, I'm

07:50

going to instead of changing the height directly here,

07:54

I'm going to actually associate the height of those walls

07:57

to one of my levels.

07:58

So I'm going to say that they go up to the roof level.

08:02

In addition to that, I want to give them

08:04

a small parapet at the top.

08:06

So you see here how there's a top offset?

08:09

I can type in a value there like 3,

08:12

and that will add an additional 3 feet

08:14

to the top of those walls.

08:17

I want to select the vertically oriented rectangle on the left

08:21

now, and lower the height down a little bit.

08:25

The easiest way to do that is going

08:26

to be to use a window selection.

08:28

So I'm going to start out here, next to A and 1.

08:31

Click and hold down the mouse.

08:33

Notice that deselects everything.

08:35

And then start making a box just big enough

08:39

to surround the rectangle on the left only.

08:43

And that will select four walls.

08:45

And instead of those going all the way to the roof,

08:48

I'll drop them down to level two.

08:50

But I want to keep the 3-foot top offset.

08:54

So now at this point, I want to check out

08:57

our progress, and the best way to do that is

08:60

going to be in a 3D view.

09:02

So I'll come up here and click our little birdhouse icon

09:04

to open up the default 3D view.

09:07

And now you can see the various heights

09:09

that we've assigned to all of the walls.

Exercise 1–Add exterior Walls

You can start adding walls anytime you have enough information to place them. In projects with a column grid, it is usually convenient to layout the grid first. This is what we did here. But you can start right in with adding walls instead if you wish. The process to adding walls is simple: layout walls in rough locations first and then come back and modify their locations, sizes and types. For this example, we will use the column grid to help us locate walls. If you are working in a project that doesn’t have a grid, simply click approximate points first and then move the walls to their proper locations later.

Catch-up file completed to this point: 05_Medical Center_Ext_Walls_A.rvt

Be sure that Level 1 floor plan is the current view. Close any other open view tabs or windows.

  1. On the Architecture tab, on the Build panel, click the Wall tool. The keyboard shortcut is wa.
  2. On the Properties palette, from the Type Selector at the top, choose: Generic - 12".
  3. On the Options Bar, for the Offset type: 1'-0".
  4. On the Modify | Place Wall tab, on the Draw panel, click the Rectangle icon (see Figure 5–1).

Figure 5–1 Run the Wall tool and configure the settings

  1. For the starting point, snap at the intersection of Grid lines 1 and A. (A small “X” shape indicates snapping to an intersection).
  2. Move the mouse down and to the right – don’t click yet.

Pay attention to the orientation of the walls before you click. If the rectangle is being formed inside of the two corners, tap the spacebar to flip to the outside before you click the second point.

  1. For the opposite corner, snap to the intersection of Grid lines 6 and H (see Figure 5–2).

Figure 5–2 Use the rectangle option to create the first four walls snapped to grid intersections

  1. Stay in the command and create a second rectangle from grid intersection D6 to H9.
  2. Make one last rectangle from grid intersection E9 to J10 (see Figure 5–3).

     

Figure 5–3 Create the rough layout of the building footprint with three overlapping rectangles

Catch-up file completed to this point: 05_Medical Center_Ext_Walls_B.rvt

Now that we have the basic exterior walls in place, we can use some standard tools to clean things up a bit. We have a few techniques we can use. The basic premise with all of them is the same: quickly sketch the rough form first (as we did in the previous steps) then modify the form.

Temporary Dimensions

  1. Select the vertical wall to the left of Grid 6.

Two temporary dimensions will appear tying its location to the walls at its left and right.

Figure 5–4 Use a temporary dimension to move a wall

  1. Click directly on the dimension value at the right (currently 2'-0") and change it to: 11'-8". (You can type 11 spacebar 8 and then enter).

The wall will move to the left. Next let’s clean up the overlapping portions (see Figure 5–4).

Using Trim/Extend tools

  1. On the Modify tab, on the Modify panel, click the Trim/Extend to Corner tool (or press tr) (see Figure 5–5).

Figure 5–5 The Trim/Extend to Corner tool

13.  Click the horizontal wall at Grid G. Click on the left side of the wall.

14.  Click the lower portion of the wall at Grid 5 (this is the one we just moved). Be sure to click the part below Grid G (see Figure 5–6).

Figure 5–6 Click the two walls to join in a corner condition - be sure to click the side you want to keep!

You always need to click the portion of the wall that you wish to keep. So, if you got the wrong thing, click the Undo tool (or press ctrl + z) on the Quick Access Toolbar and try again.

  1. Repeat the process at the walls at Grid 6 and Grid D (see Figure 5–7).

Figure 5–7 Use Trim/Extend to Corner at the wall intersection at Grids D and 6

  1. On the Modify tab, on the Modify panel, click the Trim/Extend Single Element tool (see Figure 5–8).

Figure 5–8 The Trim/Extend to Single Element Tool

  1. For the boundary edge, click the horizontal wall at Grid H.
  2. For the object to trim/extend, click the lower portion of the vertical wall at Grid 9.

Figure 5–9 Click the two walls to join in a “T” condition – First click, boundary, second click, the side you want to keep!

  1. Repeat above this by trimming the horizontal wall at Grid E using the boundary wall at Grid 9.
  2. Click the Modify tool or press esc twice to finish (see Figure 5–10).

Figure 5–10 Use Trim/Extend to Single Element at the wall intersection at Grids E and 9

Making Selections

Clicking on an element selects that element. Clicking a second element deselects the first and selects the new one instead. To select several items at once we have a few methods:

  • You can use individual selection—hold down the ctrl key and click each wall one at a time.
  • You can use chain selection—highlight (do not click) one wall, with it highlighted press (don’t hold down) tab. The chain will highlight. Then click to select the chain. So it is: Highlight, tab, then click.
  • You can use window and crossing selections—click, hold down and drag a box around multiple objects. Click and drag from left to right to select elements within the box (window); click and drag right to left to select anything touching the box (crossing).

Practice each selection method. Click in empty space or press esc to deselect everything.

Adjust Heights

We can adjust the heights of the exterior walls on the Properties palette. To do this, we want to select several walls at once.

Be sure to practice the methods just mentioned and in covered in “Selection” above. From now on, selection methods will be referenced by name.

  1. Highlight the vertical wall near Grid 10 and then press tab to highlight the chain. Click to select (see Figure 5–11).

Figure 5–11 Chain select the walls on the right

  1. On the Properties palette, in the Unconnected Height field, type: 30'-0" and then click Apply (see Figure 5–12).

Figure 5–12 Edit the Unconnected Height of the selected walls

Alternatively, use the levels to set the height of the walls.

  1. Chain select the remaining walls.
  2. On the Properties palette, change the Top Constraint to: Up to Level: Roof.

Notice that this makes the Unconnected Height “read only”.

  1. In the Top Offset field, type: 3'-0" and then click Apply.

Unconnected height now displays a new value based on the height of the Roof level plus the additional 3'-0". This top offset will represent a parapet for these walls (see Figure 5–13).

Figure 5–13 Assign the height of the walls to the Roof level plus a parapet offset

  1. Select only the four walls on the left side of the plan. You can make a window from above and to the left of Grid A1 to below Grid G6 or use the ctrl key.
  2. Set the Top Constraint to: Up to level: Level 2 (see Figure 5–14).

Figure 5–14 Change the height of the left most walls to Level 2

Viewing the model in 3D

Let’s view the result in 3D.

  1. On the Quick Access Toolbar (QAT) at the top of the application window, click the small 3D house icon.

Figure 5–15Open the default 3D view

  1. Hold down the shift key and drag with the wheel on your mouse to orbit the view and have a look around. You can also use the ViewCube in the corner of the view to view from various preset vantage points (see Figure 5–16).

Figure 5–16 Open the default 3D view and have a look around

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