Rafter Size

Specifies the rafter size in width x height, in current file units. Sizes can be edited by selecting Edit List (see Custom frame element sizes).

Dormer Rafter Size

If the roof contains dormer windows, enter the size, in Width x Height, of the dormer rafters

Minimum Spacing

Specifies the minimum distance allowed between rafters

Maximum Spacing

Specifies the maximum distance allowed between rafters; for consistent rafter spacing of the entire roof, the Minimum and Maximum Spacing values should be equal

Set top of Rafters to

Top of Roof object/component

Matches the tops of the rafters to the top of the roof object, or to the top of the component selected in Use Roof Components

Bottom of Roof object/component

Treats the roof object as a roof deck and matches the tops of the rafters to the bottom of the roof, or to the bottom of the component selected in Use Roof Components

Match Rafters across Ridges/Hips/Valleys

Ensures that opposing rafters meet on the roof ridges, hips, and valleys

Class

To control appearance and visibility, select a class from the list of classes present in the drawing or create a new class (see Creating classes)

Classes

Edits class attributes

Object Attributes

Specifies the rafter attributes