No — Damage Criteria and Minor Overtopping
Table 5.1. Kjj values for use in determining armour unit weight.
Armour units
na
Placement
Structure Trunk
Structure Head
Slope
D
Kd
Breaking
Wave
Non-Breaking
Wave
Breaking
Wave
Non-Breaking
Wave
Cot 0
Quarrystone
Smooth rounded
2
Random
1.2e
2.4
1.1
1.9
1.5 to 3.0
Smooth rounded
>3
Random
1.6
3.2
1.4
2.3
d
Rough angular
1
Randomb
b
2.9
b
2.3
d
1.9
3.2
1.5
Rough angular
2
Random
2.0
4.0
1.6
2.8
2.0
1.3
2.3
3.0
Rough angular
>3
Random
2.2
4.5
2.1
4.2
d
Rough angular
2
Spécial®
5.8
7.0
5.3
6.4
d
Parallelepipedf
2
Spécial®
7.0-20.0
8.5-24.0
—
—
Tetrapod and
5.0
6.0
1.5
Quadripod
2
Random
7.0
8.0
4.5
5.5
2.0
3.5
4.0
3.0
Tribar
8.3
9.0
1.5
2
Random
9.0
10.0
7.8
8.5
2.0
6.0
6.5
3.0
Dolos
2
Random
15.88
31.88
8.0
16.0
2.0h
7.0
14.0
3.0
(Continued')
5. Rubble Mound Structures