Autodesk 00128-051462-9310 User Guide - Page 920

Using Overrides in Curtain Wall Units Curtain wall units are subunits of geometrically complex curtain walls, which often have a large number of different elements, like frames, panels, and infills. Most of these settings are defined in the style. However, there are cases when modifying a curtain wall unit directly on screen is more suitable: ■ You want to add custom frame or mullion edges to a curtain wall unit and need direct visual feedback. ■ You want to create an override, like a merged infill or nested grid, in only one specific place in the curtain wall unit. ■ You want to experiment with different visuals without having to change the curtain wall unit style for each idea immediately. When you have finished your onscreen edits, you can decide if you want to ■ Apply the overrides to the curtain wall unit you have edited. ■ Save the overrides to the current curtain wall unit style. ■ Create a new style for the overrides. Overrides you can set include assigning a different definition to a selected cell, frame, or mullion, and assigning a profile to a frame or mullion edge. Note that the definition or profile must already exist in the current drawing before you can use it as an override. Overrides do not affect the Design Rules for the curtain wall unit style. However, you can transfer overrides to a curtain wall unit style if you want all curtain wall units of that style to have the same overrides. You can view a list of overrides that are currently assigned to a curtain wall unit from the Overrides tab of the Curtain Wall Unit Properties dialog box. For more information, see "Removing Curtain Wall Unit Overrides" on page 895. NOTE Overrides are also listed on the Overrides tab in the Curtain Wall Unit Style Properties dialog box. Overriding Curtain Wall Unit Infills The cell infills of a curtain wall unit are set in the curtain wall unit style. You can however, create overrides for these infill overrides in cells. For example, you might want a row of normal rectangular panel infills for a first floor facade. In one specific position, however, you want a decorative nested grid. In this case, you would set the row of concrete panels in the curtain wall unit style, and then override the panel at one specific place with the nested grid. Curtain wall unit infills can consist of simple panels or nested grids. You can change one infill for another, merge cells, or remove frames from an infill altogether. Turning on Cell Markers for Curtain Wall Units Use this procedure to turn on the cell markers for each grid cell in a curtain wall unit. The cell markers must be on in order to select individual cells and make changes to them. Viewing Cell Markers 1 Select the curtain wall unit for which you want to create an infill override. 2 Right-click, and click Infill ➤ Show Markers. Merging Curtain Wall Unit Cells Use this procedure to merge two curtain wall unit cells. 880 | Chapter 19 Curtain Walls