Swedge > Joint Properties
The Swedge analysis requires TWO distinct joint plane orientations to be defined. Swedge determines if a removable wedge can be formed by the intersection of the joint planes with the slope surface.
To define the joint properties:
Select Input
Data 
from the toolbar or the Analysis menu.
Select the appropriate tab(s) in the Input Data dialog and enter the following joint properties:
NOTE: see the information below about the definition of Joint 1 and Joint 2.
Optional Joint Properties - the following joint properties are optional, and can also be defined in the Input Data dialog:
Definition of Joint 1 and Joint 2
In Swedge the two joint planes defining a wedge are referred to as Joint 1 and Joint 2. The Swedge analysis is formulated such that either joint plane can be defined as Joint 1 or Joint 2, this does not affect the solution. However, it is important to note that under the following circumstances, the Slope Height and the Tension Crack are measured with respect to Joint 1:
If the slope face and upper face have different dip directions, this implies that the crest of the slope is not horizontal. In this case the slope height (wedge height) is measured with respect to Joint 1 (see dimension H1 in the following figure).
If the location of the Tension Crack is user-defined, then it is defined with respect to the trace length of Joint 1 from the crest (see dimension L in the following figure).
If either of these situations applies to your Swedge model, then you will have to keep this in mind when you define the Slope Height or the Tension Crack location.
Arbitrary wedge formed by intersection of Joints (1 and 2) with Slope planes (3 and 4). Tension crack (5) is also shown. Slope height = H1. Joint 1 Trace Length (to define Tension Crack Location) = L.
