Create straight-run staircases

00:04

Let's begin our lesson by opening the file straight down stairs.

00:09

This file will open into the 3d view called entrance lobby.

00:13

And this has shown us the area where we need to add our stairs.

00:16

Our stairs will span from level one to level two

00:19

and we'll make them align with the gap in the railings ready for our stairs.

00:25

In order to create stairs, it's best to work in a floor plan view.

00:28

So from the project browser, let's open up floor plan level one,

00:35

it's useful to see both the 3D view and the plan at the same time.

00:38

So we'll go to the view tab and from the windows panel, we'll choose tile views.

00:44

Now, we can see both views on the screen.

00:46

We'll come and choose zoom or to fit from the navigation

00:49

bar so that we can see both views in their entirety.

00:54

So to create the stairs,

00:55

we'll go to the architecture tab on the ribbon and from the circulation panel,

00:59

we'll choose there.

01:03

This puts us into our create stare mode

01:06

and we have the finished edit mode and council edit mode which we

01:09

will need to use before our other tools are enabled once more.

01:15

So whilst we're in create stair mode before we actually create our stairs,

01:19

let's go to the properties palette

01:21

and from the type selector,

01:22

we can see we have the assembled stair type seven inch maxis

01:26

and 11 inch tread selected.

01:31

This is an assembled stair.

01:33

We also have options for cast in place and precast stairs.

01:36

When we're using different materials,

01:41

looking further down the pallet, we can see the base level is level one

01:44

and top level level two.

01:47

And this gives us a desired stair height of 10 ft.

01:53

Using the seven inch max Rizor setting revert has

01:55

worked out that the desired number of risers is 18

01:59

and this will give us an actual riser height of just over six inches.

02:04

Although we can change the number of rises.

02:08

If we increase the number of rises, it will recalculate the actual RSR

02:12

height to maintain our 10 ft. Desired stair height.

02:16

Be careful. If we decrease the number of rises,

02:19

we will get a warning because the riser height has now

02:22

exceeded the seven inch maximum setting for our stair type.

02:27

So we'll cancel this

02:29

and we'll reset the number of writers back to 18.

02:33

So now to create the stairs

02:35

on the ribbon, we have the run tool selected

02:38

and it's set to be a straight run, which is what we require.

02:42

And looking at the options bar beneath, we have a run width of three ft.

02:46

So let's change this to four ft

02:51

and looking across, we have a location line which is set to be the run center.

02:55

Although we could change this to be left or right side,

02:58

the run center will suit our purposes.

03:01

So now to create the stairs,

03:03

let's zoom into the area where the stairss need to be placed.

03:08

We can see we have the outline of the floor on level two above.

03:12

So we can use this to line up our stairs

03:17

to create the stairs. We generally begin at the bottom step.

03:19

So let's choose somewhere down here by the entrance doors.

03:23

And now we can see the box outlined on the screen

03:27

and this is showing the length. We need to create all of our 18 rises.

03:31

There's also some text at the bottom here as we move our mouse along,

03:35

we can see it counting the number of rises if

03:37

we decided to finish this run at this point,

03:41

but we'll carry on and we'll create one long straight run.

03:44

So we'll get to the end of the box or maybe just past

03:47

it and then select that for the end of this run of stairs.

03:52

Now, looking in the 3D view, we can see that we've got that component created.

03:56

So this is our stare run

03:59

and this type of stare, the assembled stare. If I choose edit type,

04:03

we can see that it has a, a right stringer and a left stringer.

04:08

And these are both the same type a two inch wide stringer.

04:12

So we have the run created and then we have the supports on either side created too.

04:20

So now we'll align our stairs to the correct position.

04:23

So from the modify tab, we'll choose the aligned tool.

04:27

And here we'll now select the edge of the floor on level two.

04:32

And that was like the top of the stair.

04:35

And then we'll close the padlock to create the constraint between the two objects.

04:42

Choose, modify

04:43

to finish the align to.

04:46

And now we need to move this into the middle of the plan.

04:49

So we'll select the stair run

04:51

and choose, move from the modified ribbon,

04:55

we can snap to the end of the stair room

04:57

and then move it across to pick up the midpoint of the floor.

05:03

It's not, our stairs are in the correct place.

05:05

We can see in 3d that they're in the correct position too.

05:08

We'll choose finish edit mode to finish creating our stairs.

05:13

When we do this,

05:15

we can see that some railings will be added

05:17

either side of the stair to form hand rails.

05:20

And also in the plan view, the display is now showing us our cup line

05:24

and we have the above

05:26

C plane

05:27

shown as dashed

05:28

and the below C plane is solid.