Creating Load Combinations

00:01

MARTHA HOLLOWELL: Developing the Analytical Model in Revit--

00:03

Creating Load Combinations.

00:06

In this video, we'll step through the process

00:08

of defining load combinations of various types

00:11

that can be then exported to Robot

00:13

or other structural analysis programs.

00:17

Were working in the Small Medical Center Project,

00:19

and we want to start the Load Combinations command.

00:23

In the Analyze tab, we click Load Combinations.

00:27

This opens the Structural Settings dialog box with Load

00:30

Combinations tab available.

00:34

To add the load combinations, we just click on the Add button

00:38

and then type in a name.

00:40

We're going to use these as the ultimate combination.

00:43

So ULS 1-- we're going to change the state to Ultimate.

00:51

And then, to define the formula, we go down to the bottom,

00:54

and where it says Edit Selected Formula,

00:57

and we add in our factor and set the case or combination.

01:02

Let's add another one, ULS 2.

01:05

And this one is going to be a combination of more than one.

01:09

We'll change the state to Ultimate

01:11

and then add our various factors.

01:17

So 1.2 and a dead load, and then we'll add another one.

01:22

And this one's going to be a 1.6.

01:26

And we're going to set that to be a live load.

01:29

We can continue to add.

01:31

In this case, I'm going to do a factor of 0.5

01:36

in the case of snow.

01:38

So let's add another one in--

01:40

ULS 3.

01:43

We're going to continue to make this the ultimate state.

01:46

And then we're going to add in our various factors--

02:06

and a snow load of 0.5.

02:09

I can continue working through the process

02:12

of adding these various load combinations as I need to.

02:17

And here's an example of several other load combinations.

02:22

Let's add one more.

02:23

This one, we're going to have a serviceability state.

02:26

So we'll name it SLS.

02:29

And then, we're going to come down and edit our selected

02:32

formula and add the various parts of the formula

02:35

that we need--

02:36

live load, wind load, and snow load.

02:44

And then, we can modify the factors if needed.

02:47

So this is a process of how you would define the load

02:50

combinations of various types, how you would edit them

02:53

if you need to, and then they can

02:55

be exported to Robot or other structural analysis programs.

Video transcript

00:01

MARTHA HOLLOWELL: Developing the Analytical Model in Revit--

00:03

Creating Load Combinations.

00:06

In this video, we'll step through the process

00:08

of defining load combinations of various types

00:11

that can be then exported to Robot

00:13

or other structural analysis programs.

00:17

Were working in the Small Medical Center Project,

00:19

and we want to start the Load Combinations command.

00:23

In the Analyze tab, we click Load Combinations.

00:27

This opens the Structural Settings dialog box with Load

00:30

Combinations tab available.

00:34

To add the load combinations, we just click on the Add button

00:38

and then type in a name.

00:40

We're going to use these as the ultimate combination.

00:43

So ULS 1-- we're going to change the state to Ultimate.

00:51

And then, to define the formula, we go down to the bottom,

00:54

and where it says Edit Selected Formula,

00:57

and we add in our factor and set the case or combination.

01:02

Let's add another one, ULS 2.

01:05

And this one is going to be a combination of more than one.

01:09

We'll change the state to Ultimate

01:11

and then add our various factors.

01:17

So 1.2 and a dead load, and then we'll add another one.

01:22

And this one's going to be a 1.6.

01:26

And we're going to set that to be a live load.

01:29

We can continue to add.

01:31

In this case, I'm going to do a factor of 0.5

01:36

in the case of snow.

01:38

So let's add another one in--

01:40

ULS 3.

01:43

We're going to continue to make this the ultimate state.

01:46

And then we're going to add in our various factors--

02:06

and a snow load of 0.5.

02:09

I can continue working through the process

02:12

of adding these various load combinations as I need to.

02:17

And here's an example of several other load combinations.

02:22

Let's add one more.

02:23

This one, we're going to have a serviceability state.

02:26

So we'll name it SLS.

02:29

And then, we're going to come down and edit our selected

02:32

formula and add the various parts of the formula

02:35

that we need--

02:36

live load, wind load, and snow load.

02:44

And then, we can modify the factors if needed.

02:47

So this is a process of how you would define the load

02:50

combinations of various types, how you would edit them

02:53

if you need to, and then they can

02:55

be exported to Robot or other structural analysis programs.

Try it: Create Load Combinations

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