Specifies the direction cosines corresponding to a line drawn from the mid-point of one tie rod to the mid-point of the other. If an expansion joint has only two tie rods permitting rotation about the plane defined by the tie rods, type the direction cosines which, when crossed with the axis of the expansion joint assembly, define the plane.
In this example, you would enter VX as1.000, VY as -0.000, and VZ as 0.000.