Step 1/5 Computing parameter

Structure type

This parameter has an influence on the stability coefficient to be used. The calculation can be used on a linear section or on the bends or round head.

Unit type

This tool offers the possibility to carry our calculations with the different types of units proposed by CLI ACCROPODE™, ACCROPODE II™, ECOPODE™ ans CORE-LOC™.

Armour Slope

Two armour slopes can be use for the CLI single layer units (4/3 and 3/2). However, for the calculation with the Hudson formula, the calculateur considers an armour slope of 4/3. The slope chosen by the designer will be integrated for geometrical considerations (number of rows).

Concrete density (kg/m³)

The concrete density should not be overestimated in order to be lower than the minimum measured density on site.
Validity range [2250-2500 kg/m³]

Water density (kg/m³)

Sea water density.
Validity range [1000-1040 kg/m³]

Significant wave height (m)

The significant wave height (Hs) is H1/3 (average of the highest 1/3 of all wave heights). Attention should be paid to the difference between H1/3 and Hmo (spectral significant wave height).
Validity Range [2-12 m]

Breaking wave

Breaking waves influence significantly the stability of the armour units and must be taken into account. If yes please indicate the seabed slope mean value in the box which will appear on the right side.

Seabed slope (%)

The seabed slope is estimated taking into consideration the mean seabed slope in front of the structure. In case of non-breaking waves, the seabed slope does not influence the calculation results.
Validity range [0-10 %]

Bottom level of the armour (m)

The bottom level of the armor is the level where the first row of units is placed. Total height of the structure must be less than 35m.

Upper level of the armour (m)

Upper level of the armour. Total height of the structure must be less than 35m.

Step 3/5 Underlayer

Choosen volume

Selected volume (m³)

Unit mass (t)

Armour thickness (m)

Unit Height (m)

Choosen underlayer (NLL and NUL)

Standard rockfill NLL (t)

Mini possible NLL-30% (t)

Maxi possible NLL+30% (t)

Select rockfill NLL (t)

Standard rockfill NUL (t)

Mini possible NUL-30% (t)

Maxi possible NUL+30% (t)

Select rockfill NUL (t)

Nb:It is advisable to respect the following ratio 2<NUL/NLL<3

Step 4/5 Results

Theorical volume		0 m³
Selected volume		0 m³
Unit mass		0 t
Unit Height		0 m
Armour thickness		0 m
Armour height		0 m
Packing coefficient Phi Ø		0
Number of unit for 100 m²		0
Concrete consumption		0 m³/100m²
Number of row in the slope		0
Underlayer selected (NLL - NUL)		0 - 0 t
Underlayer thickness coefficient Kt		0
Underlayer thickness		0 m

The information generated using this computing tool is only indicative and should only be used as an initial approach.
Simulations may help clarify some of the main parameters but cannot be used directly to establish the actual basis for the armour design.
The Designer remains totally responsible for the complete analysis and definition of the armour design.
CLI will provide assistance and advice for all stages, when required, on issues that can influence the final design.

Step 1/5 Computing parameter

Step 2/5 Armour unit size estimation

Step 3/5 Underlayer

Choosen volume

Choosen underlayer (NLL and NUL)

Nb:It is advisable to respect the following ratio 2<NUL/NLL<3

Step 4/5 Results

Underlayer selected (NLL - NUL)

Step 5/5 Contact for more information

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