Roof Instance Properties
Description
Name
Constraints
Sets the level for the footprint or extruded roof.
Base Level
If selected, it means the roof is part of a room boundary. If not selected, it means
the roof is not part of a room boundary. This property is read-only before creating
a roof. After you draw the roof, you can select it and then modify this property.
Room Bounding
Indicates the element was created from a mass element. This is a read-only value.
Related to Mass
Sets the height of the roof above or below the level where it is being sketched. This
property is enabled only when creating a roof by footprint.
Base Offset From Level
Specifies a level above which all footprint roof geometry will be not shown. Roofs
cut in this manner can be combined with another roof to form Dutch Hip, Mansard,
or other roof styles.
Cutoff Level
Height of the cutoff above or below the level specified in Up to Level.
Cutoff Offset
Sets the start point of the extrusion. For example, if you pick the outer edge of the
wall during creation of the extrusion, the start point starts the extrusion to some
Extrusion start
point traveling out from the outer edge of the wall. This parameter is only enabled
for extruded roofs.
Sets the end point of the extrusion. For example, if you pick the outer edge of the
wall during creation of the extrusion, the end point ends the extrusion at some point
Extrusion end
out from the outer edge of the wall. This parameter is only enabled for extruded
roofs.
The reference level for the roof. The default is the highest level in the project. This
parameter is only enabled for extruded roofs.
Reference Level
Raises or lowers the roof from the reference level. This parameter is only enabled
for extruded roofs.
Level Offset
Construction
The length of the lines defining the fascia.
Fascia Depth
Defines the rafter cut on an eave. See
Creating a Plumb Cut, Two-Cut Plumb, or
Two-Cut Square Eave
on page 618.
Rafter Cut
This property is a switch for the Plate Offset from Base property. If you choose Rafter,
the Plate Offset from Base is measured from the inside of the wall. If you choose
Rafter or Truss
Truss, the Plate Offset from Base is measured from the outside of the wall. To see
Roof Properties | 637
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