Define and work with floors and foundation slabs.
Transcript
00:03
Foundation slabs are used to model slabs on
00:06
grade and do not require any additional supports.
00:09
A foundation slab can also be sloped and
00:12
contain multiple layers of materials like a floor.
00:15
In the example below,
00:16
you can see a foundation slab with 12 inch concrete
00:19
and a two inch blinding added under the slab.
00:22
Also, the slab contains a slab edge.
00:25
Foundation slabs are very similar to floors but have a
00:27
few key differences which are presented in the table below.
00:31
So a foundation slab has additional instance, parameters such as length and width,
00:36
but a floor has other parameters such as a function,
00:39
a variable thickness for floor layers and shape
00:42
editing tools which can be used on floors.
00:45
Shape,
00:46
editing tools are very useful when you want to
00:48
add drainage points or channels into a slab.
00:50
In this case, it's recommended that you use a floor to represent a foundation slab.
00:56
In this video, we're going to create a number of structural foundation slabs.
00:60
The first one we'll create will be on our level one plan
01:03
and then we'll create two additional foundation slabs for our building core.
01:07
Let's begin on the level one plan
01:09
to switch the view in the project browser under structural plans.
01:13
We'll double click on level one.
01:16
We'll now start the structural foundation slab tool
01:19
to do this. We'll select the structure ribbon
01:22
and on the structure ribbon
01:23
in the foundation panel, we have structural foundation slab.
01:28
Let's go ahead and select this tool
01:31
on the context ribbon. You'll note we have three modes.
01:34
We have boundary line which allows us to define the planned shape of our slab.
01:39
We have slope arrow where we can introduce a slope and also a span direction.
01:44
Let's begin by selecting the boundary line mode
01:48
in the properties paddock on the type selector.
01:50
Let's ensure that we've currently selected the 12 inch foundation slab.
01:55
In this example, we're going to trace around the outside of our building structure.
02:00
I'm going to begin in the top left hand corner.
02:03
So let's zoom up on the intersection of grid E one
02:07
and you can see here, I can snap to the top left hand corner point of my structure wall.
02:13
So we're now going to carefully trace our way around.
02:15
Now,
02:16
I don't actually want to have a slab underneath the core
02:19
area because we're going to add additional foundation slabs underneath this.
02:23
So of course, we'll trace around this
02:33
and then we can complete this edge
02:36
and we'll come down to this corner point over here
02:39
to this corner over here.
02:41
And of course, now we can close the shape.
02:45
OK. So our boundary line is now complete.
02:48
In
02:48
this example, we don't need to pay attention to a slow arrow or a span direction.
02:53
So we can just simply go ahead here and finalize the slab by selecting finish,
02:57
edit mode.
02:59
So you can now see our foundation slab has been created
03:03
to deselect the slab on the context ribbon. Let's go ahead and select the modify tool
03:09
in the same level one plan.
03:11
We're going to add a slightly thicker foundation slab underneath the stair core
03:15
to do this. We'll repeat the foundation slab tool.
03:19
In this example,
03:20
I'm going to right mouse click and
03:21
just simply select repeat structural foundation slab
03:26
in the properties pallet in the type selector.
03:28
We're now going to change the slab from
03:35
on the context ribbon in the draw panel.
03:37
In this example, we're going to use pick lines
03:41
notice on the options bar,
03:42
we would have the option of offsetting these lines that we pick
03:46
and we can also lock these.
03:48
In this example,
03:48
I'm going to select lock and this will constrain
03:51
the boundary line to the walls that I pick.
03:54
Let's now zoom up on our stair core area
03:57
and I can now start to pick off the four lines
03:60
that are going to form the boundary of my stair core.
04:04
Notice as I do this, each line is constrained to the outside edge of the wall.
04:09
Now, of course,
04:09
you can see here that we don't have continuity in this bottom left hand corner
04:13
to control that on the context ribbon, I'm going to select trim extend to corner,
04:18
I'll then pick the two lines
04:21
and you can now see they're trimmed accordingly
04:24
to finalize the foundation slab on the context ribbon. I'll select finish edit mode
04:30
once again to deselect the foundation slab on the context ribbon or select modify.
04:36
In this example, you can see that another span direction symbol has been added.
04:40
I'm going to select this symbol and simply press delete this isn't required.
04:45
Finally, we can add another foundation slab at the bottom of our lift course
04:50
to do this, we'll need to change the structural plan.
04:53
So in the project browser under structural plans, let's double click on edit
04:57
to pit,
04:59
we can now clearly see the walls making up our elevator pit.
05:03
And again, we're going to place out another structural foundation slab.
05:06
So once again, I'll repeat the command by right clicking
05:09
this time, I'll go to recent commands and select structural foundation slab
05:15
in the properties pallet in the type selector.
05:18
I'm now going to change from a 24 inch slab to a 36 inch foundation slab
05:24
on the context ribbon in the draw panel.
05:26
In this example, we're going to use pick walls.
05:30
Now, here I do require an offset and you can see at the minute the offset is set to 1 ft.
05:35
I'm going to change this to six inches
05:38
And now I can very carefully pick around the edge of
05:40
my walls ensuring that the offset is going to the outside.
05:44
And we can then create our boundary lines.
05:48
Once again, I'm going to ignore the span direction.
05:51
And here we can simply select finish edit mode to finalize our foundation slab.
05:56
Once again, I'll select, modify on the context ribbon.
05:60
I'll select the span direction symbol and press delete.
06:04
Let's now review the 3D model.
06:07
So let's go ahead and select 3D foundation view.
06:10
And now if we orbit around the view, we can clearly see we have our slab at level one.
06:15
We also have our second slab here
06:17
and our third slab underneath the lift core.
06:21
So in summary, here,
06:22
we've used a structural foundation slab to model
06:25
anything that's on grade or below the ground level
06:28
and used three different structural foundation slab
06:30
types to create different foundation thicknesses.
00:03
Foundation slabs are used to model slabs on
00:06
grade and do not require any additional supports.
00:09
A foundation slab can also be sloped and
00:12
contain multiple layers of materials like a floor.
00:15
In the example below,
00:16
you can see a foundation slab with 12 inch concrete
00:19
and a two inch blinding added under the slab.
00:22
Also, the slab contains a slab edge.
00:25
Foundation slabs are very similar to floors but have a
00:27
few key differences which are presented in the table below.
00:31
So a foundation slab has additional instance, parameters such as length and width,
00:36
but a floor has other parameters such as a function,
00:39
a variable thickness for floor layers and shape
00:42
editing tools which can be used on floors.
00:45
Shape,
00:46
editing tools are very useful when you want to
00:48
add drainage points or channels into a slab.
00:50
In this case, it's recommended that you use a floor to represent a foundation slab.
00:56
In this video, we're going to create a number of structural foundation slabs.
00:60
The first one we'll create will be on our level one plan
01:03
and then we'll create two additional foundation slabs for our building core.
01:07
Let's begin on the level one plan
01:09
to switch the view in the project browser under structural plans.
01:13
We'll double click on level one.
01:16
We'll now start the structural foundation slab tool
01:19
to do this. We'll select the structure ribbon
01:22
and on the structure ribbon
01:23
in the foundation panel, we have structural foundation slab.
01:28
Let's go ahead and select this tool
01:31
on the context ribbon. You'll note we have three modes.
01:34
We have boundary line which allows us to define the planned shape of our slab.
01:39
We have slope arrow where we can introduce a slope and also a span direction.
01:44
Let's begin by selecting the boundary line mode
01:48
in the properties paddock on the type selector.
01:50
Let's ensure that we've currently selected the 12 inch foundation slab.
01:55
In this example, we're going to trace around the outside of our building structure.
02:00
I'm going to begin in the top left hand corner.
02:03
So let's zoom up on the intersection of grid E one
02:07
and you can see here, I can snap to the top left hand corner point of my structure wall.
02:13
So we're now going to carefully trace our way around.
02:15
Now,
02:16
I don't actually want to have a slab underneath the core
02:19
area because we're going to add additional foundation slabs underneath this.
02:23
So of course, we'll trace around this
02:33
and then we can complete this edge
02:36
and we'll come down to this corner point over here
02:39
to this corner over here.
02:41
And of course, now we can close the shape.
02:45
OK. So our boundary line is now complete.
02:48
In
02:48
this example, we don't need to pay attention to a slow arrow or a span direction.
02:53
So we can just simply go ahead here and finalize the slab by selecting finish,
02:57
edit mode.
02:59
So you can now see our foundation slab has been created
03:03
to deselect the slab on the context ribbon. Let's go ahead and select the modify tool
03:09
in the same level one plan.
03:11
We're going to add a slightly thicker foundation slab underneath the stair core
03:15
to do this. We'll repeat the foundation slab tool.
03:19
In this example,
03:20
I'm going to right mouse click and
03:21
just simply select repeat structural foundation slab
03:26
in the properties pallet in the type selector.
03:28
We're now going to change the slab from
03:35
on the context ribbon in the draw panel.
03:37
In this example, we're going to use pick lines
03:41
notice on the options bar,
03:42
we would have the option of offsetting these lines that we pick
03:46
and we can also lock these.
03:48
In this example,
03:48
I'm going to select lock and this will constrain
03:51
the boundary line to the walls that I pick.
03:54
Let's now zoom up on our stair core area
03:57
and I can now start to pick off the four lines
03:60
that are going to form the boundary of my stair core.
04:04
Notice as I do this, each line is constrained to the outside edge of the wall.
04:09
Now, of course,
04:09
you can see here that we don't have continuity in this bottom left hand corner
04:13
to control that on the context ribbon, I'm going to select trim extend to corner,
04:18
I'll then pick the two lines
04:21
and you can now see they're trimmed accordingly
04:24
to finalize the foundation slab on the context ribbon. I'll select finish edit mode
04:30
once again to deselect the foundation slab on the context ribbon or select modify.
04:36
In this example, you can see that another span direction symbol has been added.
04:40
I'm going to select this symbol and simply press delete this isn't required.
04:45
Finally, we can add another foundation slab at the bottom of our lift course
04:50
to do this, we'll need to change the structural plan.
04:53
So in the project browser under structural plans, let's double click on edit
04:57
to pit,
04:59
we can now clearly see the walls making up our elevator pit.
05:03
And again, we're going to place out another structural foundation slab.
05:06
So once again, I'll repeat the command by right clicking
05:09
this time, I'll go to recent commands and select structural foundation slab
05:15
in the properties pallet in the type selector.
05:18
I'm now going to change from a 24 inch slab to a 36 inch foundation slab
05:24
on the context ribbon in the draw panel.
05:26
In this example, we're going to use pick walls.
05:30
Now, here I do require an offset and you can see at the minute the offset is set to 1 ft.
05:35
I'm going to change this to six inches
05:38
And now I can very carefully pick around the edge of
05:40
my walls ensuring that the offset is going to the outside.
05:44
And we can then create our boundary lines.
05:48
Once again, I'm going to ignore the span direction.
05:51
And here we can simply select finish edit mode to finalize our foundation slab.
05:56
Once again, I'll select, modify on the context ribbon.
05:60
I'll select the span direction symbol and press delete.
06:04
Let's now review the 3D model.
06:07
So let's go ahead and select 3D foundation view.
06:10
And now if we orbit around the view, we can clearly see we have our slab at level one.
06:15
We also have our second slab here
06:17
and our third slab underneath the lift core.
06:21
So in summary, here,
06:22
we've used a structural foundation slab to model
06:25
anything that's on grade or below the ground level
06:28
and used three different structural foundation slab
06:30
types to create different foundation thicknesses.
