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Creating siMPle Curtain Walls 513

Join Condition This option defines the behavior of the mullion joins. It can be one of the
following:

◆ Not Defined (join conditions can be overridden as necessary)
◆ Vertical Grid Continuous
◆ Horizontal Grid Continuous
◆ Border And Vertical Grid Continuous
◆ Border And Horizontal Grid Continuous
Display In Hidden Views This option allows you to control the graphic display of individ-
ual components over several views. The options for this can be one of the following:

◆ Edges Hidden By Other Members (the default)
◆ Edges Hidden By Element Itself
◆ All Edges
◆ None
Grid Pattern: Layout There are four options to define how the vertical and horizontal grids
will be arranged in your curtain wall:
Fixed Distance The most common setting, which allows you to specify spacing between
gridlines. Leftover panel segments must be accounted for in the overall length of the wall.
Fixed Number Divides the wall segment into equally spaced panels. When you select
this option, the Spacing parameter becomes disabled. In its place, a new integer
parameter named Number will appear in the instance properties.

Maximum Spacing Indicates the maximum spacing distance. Curtain panels will be
equally divided over the length of the wall segment, not to exceed the Spacing value.

Minimum Spacing Indicates the minimum spacing distance. Curtain panels will be
equally divided over the length of the wall segment, no smaller than the Spacing value.

Mullions This option allows you to specify the mullions that will be automatically
applied to the curtain wall. Corner mullions can be applied to either Border 1 or Border 2
for the vertical mullions, but use them carefully—their resolution at corners will depend
on how you construct your wall segments. For example, if you define a corner mullion for
Border 1 and none for Border 2, you must construct all curtain wall segments of this type
in a uniform direction. If you model one wall segment from left to right and another from
right to left, you will have overlapping mullions at one corner and none at the other corner.

Modifying Pinned Panels and Mullions
You may have already noticed that when a panel or mullion is selected from a predefined
curtain wall type, it appears with a pushpin icon. This indicates that this element is part of a
system and cannot be changed without additional action.

c12.indd 513 5/3/2014 11:13:14 AM