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The intent of modeling cladding is to facilitate the application of auto wind loads based on exposure from of shell objects. The "cladding" consists of shell objects , with a the None section property , that are added around the outermost perimeter of the structure. The cladding objects have no self-weight or structural properties. These objects are intended to be selected You should select the cladding objects before using the Assign menu > Shell Loads > Wind Pressure Coefficient command to apply wind load to the structure. The cladding objects can be selected Do this by using the Select menu > Select > Labels > Shell Labels command to bring up the Select by Shell Label form; on that form the objects can be selected on a face-by-face basis. 

Click the Draw menu > Auto Draw  CladdingCladding command to access the Cladding Options form. Three options are available: 1- . Use floors; Floors, 2- . Use Beams, and 3- . Use columnsColumns. “Use Selected Objects only” can also be checked with any of the three options.

1- .a ) Use Floors: When this radio button is selected, the program detects the edge of all floor objects and draws vertical area shell objects with none the None section property.

1.b) . ETABS adds cladding at selected floors when you check “Use Selected Objects only”.  

2- .a) . Use beamsBeams: When this radio button is selected, the program detects the outermost beams in the building structure and draw draws vertical area shell objects with none the None section property.

2.b) . ETABS adds cladding at selected beams when you check “Use Selected Objects only”.

3- .a) . Use Columns: When this radio button is selected, the program detects the outermost columns in the building structure and draws vertical area shell objects with none the None section property.

3.b) . ETABS adds cladding at selected columns when you check “Use Selected Objects only”.

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