Rocscience International Conference 2025 is going to take place in Sydney, Australia Read more

Search Results

Forest Damping

When rockfalls occur on a forested slope, impacts of rocks with trees or vegetation can reduce the speed and energy of rocks traveling down the slope.

The Forest Damping option is implemented as a slope material property (drag coefficient) as shown below. The Effective Height allows you to specify the tree height over which the damping will take place.

Forest/Vegetation Damping dialog

If you select the tree icon Tree icon (beside the Drag Coefficient), a popup will allow you to estimate a value based on the average forest density (Bartelt et al, 2016). If you select Open, Medium or Dense forest, the corresponding drag coefficient will be automatically entered in the dialog. Or you can simply enter a value directly in the edit box.

Forest Density dialog

Any rock paths travelling through the shaded area will have forest damping applied. You can define and assign different coefficients or effective heights to different segments of the slope, as required.

Image of model
Image of model


  • Forest Damping is only available if you are using the Rigid Body Analysis Method.
  • Forest Damping has NOT been implemented for the Lump Mass Analysis Method.

Forest Damping Tutorial

See Tutorial 08 - Forest Damping in RocFall for a tutorial that illustrates the Forest Damping option.

Forest Damping Verification

See the Forest Damping verification document.

Forest Display Option

In the Display Options dialog, you can customize the colour or hatch pattern used to display the forest areas on the slope.

Display Options dialog


The forest damping model in RocFall is built on the theory developed by Leine et al [2013].

Rocscience logo, click here to return to the homepage Portal Account Portal Account Log In Log Out Home Shopping Cart icon Click here to search our site Click here to close Learning Tech Support Documentation Info Chevron Delete Back to Top View More" Previous Next PDF File Calendar Location Language Fees Video Click here to visit Rocscience's LinkedIn page Click here to visit Rocscience's YouTube page Click here to visit Rocscience's X page Click here to visit Rocscience's Facebook page Click here to visit Rocscience's Instagram page Click here to visit Rocscience's Reddit page Bookmark Network Scroll down for more Checkmark Download Print Back to top Single User Multiple Users RSLog RocFall3 CPillar Dips EX3 RocFall RocPlane RocSlope3 RocSupport RocTopple RS2 RS3 RSData RSPile Settle3 Slide2 Slide3 SWedge UnWedge RocTunnel RocSlope2 Commercial License Education License Trial License Shop safe & secure Money-back guarantee