Start and End Plane Directions
- Last UpdatedFeb 19, 2025
- 1 minute read
Keywords
DRNSTART DRNEND
Description
The directions of the start and end cutting planes of a Section (that is, the directions of the perpendiculars to the planes which define the ‘cut’ ends of the Section) are usually defined automatically when the Section is connected within the structural model; either by Stringing (refer to Creating and Connecting Sections Automatically) or manually (refer to Manually Connecting Sections). The settings of the corresponding DRNS and DRNE attributes are then derived automatically from the directions of the associated Joint’s Cutting Planes.
It is also possible to set DRNS and DRNE specifically; for example, where a Section extends into free space, with at least one end unconnected. In this case each cutting plane direction must be in the general direction of the other end of the Section.
Example |
|
|---|---|
|
DRNS N45W |
Sets DRNS to the specified direction, regardless of the direction of the Section’s Z-axis. |
|
DRNE PERP |
Sets DRNE so that the end cutting plane is perpendicular to the Section’s Z-axis (giving a square end as opposed to a chamfered end for a Section which has a skewed connection). |
Command Syntax
>--+-- DRNStart --.
| |
‘-- DRNEnd ----+-- <bdir> ---------.
| |
‘-- PERPendicular --+-->
Querying
Q DRNStart
Q DRNEnd