Input Lift Core

Use Input Lift Core command to define liftcore and shearwall.

The command brings up the wall properties form. In this form, you can set the following options:

· Dimensions (mm): You can specify the wall thickness of the wall. The measurement unit for the wall is in millimetre (mm)

· Position (mm): You can offset the wall from the centre of the gridline. Positive figure offsets the wall to top or right of the gridline and negative figure denotes offset to bottom or left of the gridline.

· BRC setting: You have the options of selecting the type of steel reinforcement for the wall. You can either select BRC or non-BRC steel reinforcement.

· Rebar layer: You have the options of selecting single or double layer of steel reinforcement for the wall.

· Apply to other floors: You can copy the wall properties to other floors. Clicking this button overwrites wall properties from top and bottom floors to this setting.

· Auto Optimization: You can manually select the specific element to auto optimize in here. To do so, simply select the Wall Panel you want and tick the Thickness option .To inactivate the specific element auto optimization, just select the specific element and untick the Thickness option .Default of the option (whether is activated or not) is based on the

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“Project Design and Detailing Parameters” similarly button at the tool bar.

Figure 11.1 Lift Core properties Table

To create wall, click on Input Lift Core command. Specify the wall dimensions at the Dimension (mm) table. Move the cursor to the grid intersection of the wall starting point. When a square box appears on the grid intersection, left click once to select that point.

Right click once to cancel at anytime. Then move the cursor to the wall ending point. You can see the outline of the wall while moving your cursor. Left click once to define the wall.

Point Load : You can input point load on the wall. Specify the point load in the load magnitude table. Left click once to select the wall. The active dimension appears when you move the cursor. The reference point of the load is based on the left or bottom of the gridlines. Move the cursor to the load position and left click once to apply the load.

Liftcore properties : In this command, you can modify overall height of the walls, lift pit depth and the wall mark. Left click on the wall to display the wall properties. To edit the wall height, specify the beginning and ending floors of the wall.

Align wall to grid line: You can offset the column using the offset wizard. These features can automatically offset the column to the left, right, top, bottom and centre of the grid. Figure below shows the description of each offset commands.

Table 11.1: Offset wall alignment command

11-160 11.2 Create Wall Opening

This command allows you to create opening on the wall. Click on the Create Wall Opening command and point the cursor to the wall.

Left click once on the wall after the cursor changes to "WO" icon.

The elevation view of the selected wall will appears on the window.

On the properties table, specify the wall opening dimensions. Click once on the wall and the opening appears on the wall. To cancel at anytime, click the right button. The reference point of the wall opening is located at the bottom left corner of the wall. Move the wall opening to the position you want to place and click once to confirm.

You can also modify the position after you have created the wall opening using the properties table. Close the window to return to the key plan layout by clicking the cross button on the top right corner of the window.

For example, you want to create a 1200mm x 2200mm opening on the 4230mm x 3000mm wall. Use Create Wall Opening command and click on the wall. The wall elevation appears on the window.

Specify the width and the height of the opening and left click on the wall. The opening layout appears on the wall. To position the opening at the bottom centre of the wall, move the cursor until the X and Y coordinates are set to 1515mm and 0mm respectively. Left click to confirm the coordinate of the opening. Alternatively, set the opening to any point of the wall, click on the opening again and modify the X and Y coordinates to the exact location.

Figure 11.1: Active layout of wall opening

Figure 11.2: Created wall opening

Alternatively, you can use the alignment wizard to set the wall opening position. Refer to the Table 11.2 for the description of each alignment command.

Table 11.2: Description of lift alignment icon

11-162 11.2.1 Customizing floor to floor opening

For a particular wall, you can create different openings for different floor levels. To customize floor to floor opening, left click on the created opening. On the properties table, click on the "Apply to all floor" button and wall opening assignment form appears. By default, the selected opening is applied to all other floors. In the form, empty the box for the other floors that you do not want the selected opening.

Click OK to confirm selection. If you create a new wall which overlaps the existing wall, the program will delete the existing wall.

Note: If you created opening only on a particular floor, make sure that you empty the boxes for other floors. Unable to do so, all other existing openings on other floors and will replaced with this opening.

For instance, a 1000 x 1800 door opening on first floor and two 600 x 600 windows opening on second floor. Highlight the particular opening and click on Apply to all Floor to bring up the Wall Opening Assignment form. Select the floor you want the opening to be located. Next, repeat the steps for next opening. You can only select one opening at a time to duplicate to other floor.

Figure: Wall Opening Assignment Form