LaRiMit

Select case parameters

Input case-specific information on the description of the movement and the relevant physical conditions on the site

Type of analysis

Triggering - measures to reduce the hazard (preventing the triggering of the landslide)
Runout - measures are to reduce the consequences (limiting the runout)
Triggering/Runout - both of the above

Type of movement

If the landslide is triggered by a complex mechanism, select the predominant type of movement of that landslide

Fall - Falls are abrupt movements of the slope material that separate from steep slopes or cliffs. Most of the movements occur due to free falls or by rolling or bouncing.
Topple - Topples are blocks of rock that tilt or rotate forward on a pivot or hinge and then separate from the main mass, fall on the slope, and subsequently bounce and roll down the slope.
Slide - These are movements caused by finite shear failure along one or more surfaces of rupture, which are visible or whose presence can be inferred.
Spread - These failures are caused by liquefaction whereby saturated, loose, cohesionless sediments are transformed into a liquid state. Rapid ground motions, such as those caused by earthquakes, are responsible for this phenomenon.
Flow - Flows are rapid movements of material as a viscous mass where inter-granular movements predominate over shear surface movements.

Material

If more than one type of material is present, select the predominant type.

Earth - Earth describes material in which 80 % or more of the particles are smaller than 2 mm, the upper limit of sand sized particles.
Debris - Debris contains a significant proportion of coarse material: 20 % to 80 % of the particles are larger than 2 mm, and the remainder are less than 2 mm.
Rock - Rock is a hard or firm mass that was intact and in its natural place before the initiation of movement

Depth of movement

Depth below ground surface (m)

Rate of movement at time of works

Groundwater

Surface water

Prioritise the following variables on a relative scale from 1-10 (1: not relevant and 10: extremely relevant).

Importance of mitigation effectivity

Effectivity being the degree to which the measure is successful in producing the desired result.

Importance of environmental considerations

Consider aspects like suitability, ecological footprint, environmental impact, adaptability to climate change, aesthetic quality.

Importance of construction time

Consider aspects like time required for planning and implementation.

Importance of cost

Consider aspects like cost of design, cost of construction, cost of maintenance, cost of management.