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Adding Line Loads

In RocTopple, a line load is a concentrated load that appears as a point load in the 2D View but that actually represents a linear (line) load when considering the out-of-plane dimension of the model. Hence, the units of a line load are force / length where the length dimension is measured along the slope surface perpendicular to the 2D cross-section. Line loads can be added anywhere along the slope face or upper slope, at any angle, on the exposed upper edges of the toppling blocks.

To add a line load:

  1. Select Add Line Load on the toolbar or the Loading menu.
    The Add Line Load dialog appears.
    Add Line Load dialog
  2. Enter values for the following parameters:
    • Name
    • Magnitude
    • Angle
    • Installation (Slope Face or Upper Slope Face)
  3. Click OK to add the load to the model.
    A line load appears as an arrow in the 2D View and as a series of arrows joined by a line in the 3D View.

After a load has been added, it can easily be edited, moved or deleted.

Line Load Magnitude

The Add Line Load dialog requests the Magnitude as a force per linear distance when considering the out-of-plane dimension of the model. The units correspond to the currently selected Units in the Project Settings dialog.

Line Load Angle

The Line Load Angle is specified with respect to the horizontal (e.g., a 90 degree load is a vertically oriented load applied downward). Negative angles are permitted.

Line Load Installation

Line loads can be applied on the slope face or upper slope of a RocTopple model. When you initially add a line load, the installation location is specified as follows:

  • Slope Face - The location of the load is specified as the vertical height from the toe of the slope.
  • Upper Slope - The location of the load is specified as the horizontal distance from the crest of the slope (even if the upper slope surface is not horizontal).

When a load is added, RocTopple automatically determines the exact location of the load on the toppling block surface corresponding to the number you have entered. If the load does not appear where you intended, you can edit or delete the load and modify your input accordingly.

Line Load Statistics

If you are carrying out a Probabilistic analysis, the load Magnitude can be defined as a random variable. See Load Statistics in a Probabilistic Analysis for more information.

Line Load Action

If you are applying one of the Design Standard options in the Project Settings dialog, you can specify the Load Action for a line load in the Partial Factors dialog.

  • For Eurocode 7, you can choose a Permanent or Variable action.
  • For BS 8006: 1995 Section 7, you can choose Dead or Live action.

See Design Standard Setting in RocTopple for more help.

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