Rock characteristics
Rock dimensions (3x)
m
Rock density
kg m
-3
Rock shape
Rectangular
Rounded
Rectangular
-
Slope characteristics
Mean gradient of the slope
º
Height of the cliff
m
Length of the forested slope (planimetric)
m
Length of non-forested slope (planimetric)
m
Forest characteristics
Mean stand density (DBH ≥ 8 cm)
ha
-1
Basal area (DBH ≥ 8 cm)
m
2
/ha
OR
Mean diameter at breast height (DBH; ≥ 8 cm)
cm
Occurrence of dominant tree species:
- Norway spruce (
Picea abies
)
%
- Silver fir (
Abies alba
)
%
- European beech (
Fagus sylvatica
)
%
- Other broadleaved species
%
- Other coniferous species
%
1. Current degree of protection:
1 - 100 %
2. Ideal forest profile for rockfall protection:
Required density with DBH ≥ 8 cm:
tr./ha
Required density with DBH ≥ 12 cm:
tr./ha
Required density with DBH ≥ 24 cm:
tr./ha
Required density with DBH ≥ 36 cm:
tr./ha
- Ideal basal area (DBH ≥ 8 cm; ideal target profile):
m
2
/ha
- Minimum stand basal area (DBH ≥ 8 cm; minimum target profile): at least
m
2
/ha
- Required basal area (DBH ≥ 8 cm) for an optimal energy dissipation (to potentially stop all falling rocks):
??? m
2
/ha
Data used for the calculation:
Rock volume = 0 m
3
Rock mass = 0 kg
Maximum rock energy in the forest = 0 kJ
Length of the forested slope (measured along the slope) = m
Current stand basal area = 30 m
2
ha
-1