Defining a new unit load

Parameters of unit loads

Name	Name of the impulse.
Track assignment	The track that is associated with the unit load.
Sections	This parameter specifies the density of sections and thus also the number of generated load cases for 1D members. Use sections from results The unit load is positioned into every section of a 1D member located on the mobile track. Use step according to 2D element The unit load is positioned with the step equal to the value specified in the input box Step for 2D element. If the structure contains 1D members that are shorter than this step, these 1D members may not be subjected to the unit load at all. Generate at least one section on member The unit load is positioned with the step equal to the value specified in the input box Step for 2D element. However, the unit load is positioned also on the 1D members that are shorter than this step.
Step for 2D element	The size of the step for 2D elements. This parameter specifies the density of evaluation points and thus also the number of generated load cases for planar members. The overall length of the track is divided by this parameter and this quotient defines the number of intermediate points where the mobile unit load impulse is positioned. A shorter step means more accurate results but longer time of calculation.
Generate section under Load system	If ON, the section is generated under the defined load-system.
Add new impulse	Adds a new unit impulse.

Type	The load impulse may be: concentrated or uniform (i.e. distributed).
Value	The size of the impulse. Default value = 1.0.
Position	Position on the mobile track.
ey	Eccentricity of the impulse.
ez	Eccentricity of the impulse.
System	Defines the coordinate system in which the impulse is defined.
Direction	Direction of the impulse.