Autodesk 00128-051462-9310 User Guide - Page 844

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. For example, if you want to override a cell that has a simple panel infill with an octagonal window infill, you must first define the window (octagonal) style as a valid infill in the curtain wall style. Similarly, if you want to override a frame or mullion edge assignment in the curtain wall, the curtain wall style must contain the edge profile as a frame or mullion definition. NOTE You cannot modify a definition using the Override method. For information about modifying definitions, see "Modifying Element Definitions for Curtain Wall Styles" on page 819. Overrides do not affect the Design Rules for the curtain wall style. However, you can transfer overrides to a curtain wall style if you want all curtain walls of that style to have the same overrides. You can view a list of overrides that are currently assigned to a curtain wall from the Overrides tab of the Curtain Wall Properties dialog box. For more information, see "Removing Curtain Wall Overrides" on page 818. NOTE Overrides are also listed on the Overrides tab in the Curtain Wall Style Properties dialog box. Overriding Curtain Wall Infills The cell infills of a curtain wall are set in the curtain wall style. You can, however, create overrides for these infills in cells. For example, you might want a row of glider windows for a first floor facade. In one specific position, however, you want a frosted glass window. In this case, you would set the row of glider windows in the curtain wall style, and then override the infill style in one specific cell with a frosted glass window. Curtain wall infills can consist of simple panels, objects like windows or doors, or nested grids. You can change one infill for another, merge cells, or remove the frame from an infill altogether. This would be useful if you add a door into a grid cell and want to remove the bottom frame from that cell. Turning on Cell Markers Use this procedure to turn on the cell markers for each grid cell in a curtain wall. 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 for which you want to create an infill override. 2 Right-click, and click Infill ➤ Show Markers. Merging Curtain Wall Cells Use this procedure to merge two curtain wall cells. NOTE To merge curtain wall cells, the cell markers need to be visible. For information on turning on cell markers, see "Turning on Cell Markers" on page 804. You can only merge cells which are adjacent to each other. In most cases you merge cells with the same infill type. The merged cell is then the same type as the original cells. For example, if you merge two solid panel infills, the resulting merged cell also has a solid panel infill. In some cases however, you might want to merge two cells that have different infill types. In that case, the infill type of the first selected cell is used for the merged cell. For example, if you want to merge a cell with a simple panel infill and a cell with a window infill, and you select the cell with the simple panel first during the merge command, the merged cell 804 | Chapter 19 Curtain Walls