In this video,
I'll cover creating a framing floor platform that is hung for the foundation.
A hung framing platform on the foundation can provide for an accessible entrance
for aging in place structures.
Let's build a hung framing platform on the foundation for this sample beginning
with creating the foundation. Underneath the build menu,
I'll come down to floor, and build foundation.
Inside of the build foundation dialog, underneath foundation type,
I'm going to select walls with footings,
and immediately below this category is the option to hang
the first floor framing platform inside of the foundation walls.
If you know in advance, when you're building your foundation,
this is the easiest way to hang the platform.
If you decide to later hang the platform,
this is a setting that will be changed inside of the foundation walls.
I'll show you where that setting is after we go through and build this roughly
three foot stem wall height foundation.
I'm going to let the program build the foundation from the main first floor.
The program builds the foundation.
I'm now on the zero floor or the foundation.
You can see the walls that were created and on the bearing walls to hang the
platform, I want to open up those walls,
mark them to include the ledger. So I'm gonna hold my shift key down,
and I'm going to click on the sidewalls that are opposing one another.
So all three walls. I hold the shift key down click,
and then I'm going to go ahead and open up these walls inside of the wall
specification on the structure panel.
You're going to see that the hang the floor platform above on wall is already
selected because we chose that option when the foundation was built.
For the bearing walls that we've selected apposing one another,
I'm going to choose the option to include a ledger.
In the non bearing walls we'll not include this ledger.
With the foundation ready to build the framing,
let's actually take a 3d view using the perspective floor overview
camera. You can see the stem walls. And at this point,
I'm going to come underneath the build framing tools and specifically on the
foundation panel, I'm going to use the build floor framing option.
The floor structure is already defined on the main first floor.
It's using a two by 14, the spacing, the joist width,
and the rim joist, which will be used for the ledger,
I've set it to one and a half inches.
You can choose the style of rim joist that you want to build for that ledger.
Once the framing is built,
you can zoom in and you can see that the ledger is on the bearing walls and on
the non bearing walls, we don't have a ledger created.
Let's take a look at the condition where we want to inset the ledger into the
concrete wall. I'm going to do that by using a pony wall.
Let's go back into the floor plan view, and I want to take a cross section.
I'm going to use the back clip cross-section camera and just slide a small
section right in this area.
So to inset this ledger into the stem wall,
what I'm going to do is I'm going to take that stem wall and make it a pony wall
where the upper portion of the wall is a six inch stem wall,
and then the lower portion is the eight inch stem wall, which we already have.
Let me press shift F6 on the keyboard and tile, the views.
On the wall on the left, let's double click and open it up.
When you have two different wall types in Chief Architect,
this is known as a pony wall.
On the wall types panel is the option to mark a wall as the pony wall.
The lower portion of the wall I'm going to leave unchanged at an eight inch stem
wall. For the upper portion of the wall,
I'm going to change that to a six inch concrete stem wall.
If you need to create a six inch concrete stem wall,
you can click the define button, come in, make a copy of the wall,
and then set the thickness and the other layers that you want to create that
particular wall.
In the elevation setting for the lower portion of the wall type,
notice that it currently has a negative value in here.
My floor joist is 14 inches,
and there's a sub floor with three quarters of an inch.
I'm going to set the elevation to that depth of 14 and three
quarters inches. If I kind of slide over here a little bit,
you can see that the 14 inch joist,
the three quarter inch sub floor that will position that wall right at the
bottom of the joist. In the section view,
you can see the portion that is six inches,
and then the framing needs to be rebuilt,
has a small gap to rebuild the framing.
We'll just come in underneath the build framing option. Again,
underneath the foundation, I'm going to turn on build framing for the floor.
You'll notice the framing now extends into the inset ledger in the area where
the two wall type, it shows a line divider. You can use the line tool,
cover that up and I'll the snap onto the end of the line,
double click to open up the line.
And all I'm going to do on the line style is come in here, turn it white.
That way it will mask,
and you don't see that division for the two different wall types.
If you are building with floor trusses, you can use the floor truss tool.
Since the wall is marked to be hung for the platform.
The floor trusses will also come in at the right elevation.
I'll come over into the floor plan view.
I'm just going to hold my shift key down,
draw a marquee around the various floor, joist and press a delete key.
Then using the floor truss tool, come in, click on one edge,
extend over to the other edge and generate the floor truss.
Of course you can use the multiple copy tool.
To learn more about platforms and framing.
Please see the built-in help file as well as our other videos.
Thanks for watching.