Generating a 3D View of the Model and Creating Additional Storeys

2.10.1 Exercise Aims

• Generate a 3D View of the Model

• Inserting Additional Floors

• Copying Storey Data from one floor to another

• Editing the Storey Height

The building currently consists of only one floor. To complete the analysis model we shall generate additional floors. To assist in this process a 3D view of the model can be created.

A 3D view of the model can be obtained which will allow you to choose different layouts of Plan view (P) and 3D view (3) windows. It is possible to create different 3D views in different windows.

From the Window menu select the Tile Vertical

Note: Alternatively, the Plan/3D View tab at the bottom of the screen can be used to cascade & tile the different windows

Left click on the 3D View window to make it active, and then right click to display the 3D View menu.

The 3D View can be manipulated in a number of ways:

The Wireframe/Shaded/Stick View icons produce different rendering of the 3D view. Reducing the level of rendering increases the speed of dynamic panning/zooming.

Filters enable different member types to be filtered at each storey.

3D View Options enables viewing from different directions and elevations.

Animation rotates the building about a vertical axis.

Click & drag right mouse allows spinning, click and hold on mouse roller allows Panning, and moving mouse roller allows zoom in/out.

2.10.2 Inserting Additional Floors

Now we will generate an additional 3 floors, so the model will become a 4 storey building. To construct a 4 storey model we need to insert firstly a floor at the 4^th floor.

Right click on the Storeys in the Structure Tree to display the Storey Menu

Choose Insert storey, or from the Main Menu select Building/Insert Storey.

The screen should now look as follows.

The 4^th storey has now been inserted but as can be seen it does not contain any members in the plan view.

2.10.3 Copying Floor Data to Other Floors

Right click on Storeys in the Structure Tree to display the Storey Menu and select the option Generate storey (or from the Menu bar Building/Generate Storey) so the Storey Generate dialog box appears.

Highlight St01 as the Source Storey and then St04 as the Target Storey.

Then click on OK.

After generating select Close.

From the Structure Tree you will see that St04 has a circle mark next to it but St02 & St03 don’t have this mark. Floors without any mark automatically adopt the same member layout as the floor above. Hence storeys St02 & St03 are assumed to be identical to the4^th storey. Whatever changes are made to the 4^th storey will be carried through to the 3^rd & 2^nd storey.

To make the 3^rd storey different from the 4^th storey, it would be necessary to first generate the similar member types from the 4^th storey to the 3^rd storey then modify the 3^rd storey accordingly.

Because the 3^rd storey would now have a mark next to it in the storey list the 2^nd storey would be similar to the 3^rd storey.

So we can do this as follows:

Right click on Storeys in the Structure Tree to display the Storey Menu and select the option Generate storey.

Ensure that the source storey is St04 and the Target Storey St03 then choose OK

Then after generating choose Close.

From the Structure Tree you will see that St03 now has a circle mark next to it indicating that it is a unique and editable floor, as are St01 and St04.

St02 cannot be edited, as it is identical to St03.

2.10.4 Moving between Storeys

The current storey displayed in the plan view will be shown in bold on the Storey menu in the Structure Tree. To change to a different storey, simply double click on it in the Structure Tree.

If you are not currently viewing storey 4, double click on Storey: St04 so that it is shown in bold (as shown on the right)

2.10.5 Editing the Roof

Select the Slab icon or from the Pull Down menu select Member/Slab.

Then select the Slab Type to be 1 and ensure the thickness is 200mm and the cover 25mm.

Then enter the slab where the lift wall is at Grid 2-3/C-D So your screen should look as follows.

We will now edit the storey height as currently each floor is 3300mm high based on the 1^st storey generated earlier.

Select Edit Storey from the storey menu or by selecting from the Main Menu Building/Edit Storey so the Edit Storey dialog box appears as shown below.

To change a floor height: click in the cell for h(mm) at the desired storey, St01

Change the current value of 3300 to be 4000. Click outside the cell and you should notice the values in the Level column have changed as shown below.

1^st Storey Bottom Level - The Number of Basements is only used for determining a factor used in earthquake analysis. (Not available in this version of Orion).

Foundation Level –This is the length of the column below the datum level (St00), by Default 1100m

2.10.7 Specifying Imposed Load Reductions for Each Floor

The Edit Storey dialog is used for this purpose.

Click on the button to apply the Imposed Load Reductions.

Then select OK.