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Geoenvironmental Disasters

Table 8 The modified rock block size and rockfall volume classification

From: Slope mass rating-based analysis to assess rockfall hazard on Yogyakarta Southern Mountain, Indonesia

Block size (m)

≤ 0,30

0,31–0,60

0,61–0,90

0,91–1,20

≥ 1,20

Rockfall volume (m3)

≤ 2,30

2,31–4,60

4,61–6,90

6,91–9,20

≥ 9,20

Weight

3

9

27

54

81

Hazard rating

Very low

Low

Moderate

High

Very high

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