1- Select your profile depending on your project stage

TENDER STAGE

“60 YEARS EXPERIENCE IN DESIGN, RESEARCH & DEVELOPMENT AND APPLICATION OF INNOVATIVE CONCRETE ARMOURS AND TOOLS. CLI’S KNOWLEDGE-BASED SUPPORT AIMS AT ASSISTING DESIGNERS, OWNERS AND CONTRACTORS TO OBTAIN AN OPTIMIZED AND SAFE DESIGN, AND A REDUCED CONSTRUCTION RISK”.

If the Designer is assisting a Contractor taking part in a works tendering process, CLI can provide useful information for optimising a basic solution in which CLI units are already specified, or for drawing up an alternative with one of CLI’s units.

This is done in complete confidentiality. The basic technical specifications are always given with a technical memorandum containing recommendations.

During the tendering phase, CLI is available to help contractors by providing them with useful information for determining their prices, including CLI’s financial conditions. An integral part of these conditions is the rights and the technical assistance that CLI will provide to the contractor until placing on the structure is completed.

If a solution involving CLI units needs to be reviewed, a detailed technical memorandum with comments is drawn up to enable the contractor to submit a sound technical proposal.

When requested, CLI technical assistance can be provided during tender to help the Contractor outline his Construction Methods Statement for meeting the project requirements

It is important for your project involving a solution with CLI units to be officially recognised as such. The associated trademark is a guarantee that CLI will monitor the application through to its completion, applying the same standards as those applied in other projects completed to date that have given full satisfaction (long-term reliability).

CLI’s technical assistance ensures also consistency between design/theory and executed armour placement.

“TRACK RECORDS, FEEDBACK AND PROJECT-SPECIFIC TECHNICAL ASSISTANCE: KEYS FACTORS THAT MAKE THE DIFFERENCE”


Useful documents to download

DESIGN & PHYSICAL MODELLING STAGE

“CLI’S ASSISTANCE WILL RESULT IN OPTIMIZING THE ARMOUR DESIGN AND THE SUCCESS OF THE MODEL TESTS: NO OVER DESIGN, REDUCED CONSTRUCTION RISKS, AND A FAIR ESTIMATION OF THE ARMOUR CONCRETE CONSUMPTION”

With proper technical information, CLI will review solutions drawn up by designers or carry out preliminary design studies. If physical modeling is conducted CLI will advise the designer and the laboratory up to the final design stage.

Physical models provide a clear and real demonstration of the behavior of the concrete armour protecting shorelines and coastal structures under waves, wave run-up, wave forces and currents simulated actions. These studies result in designs with improved performance, as well as potential cost savings.

CLI single layers have proved to be reliable over the years.

The experience gained in this way can be of benefit to designers in resolving design issues. CLI respond and interact with Designers and/or Consultants to provide project specific advice and comments, free of charge as studies progress.

Information and recommendations about a few important parameters

The following information is provided as preliminary recommendations for the design of the armour protection and may also serve for interpreting our amour units design tables.


1. Unit volume:

ACCROPODE™: The standard ACCROPODE™ units sizes range from : 0.8 to 28 m³

Note that an ACCROPODE™ unit larger than 28 m³ should not be used without specific investigations – please contact CLI for details. 28 m³ is the largest unit size actually built so far.

ACCROPODE™ II: The standard ACCROPODE™II units sizes range from : 1.0 to 28 m³

Note that an ACCROPODE™ II unit larger than 28 m³ should not be used without specific investigations – please contact CLI for details.

ECOPODE™: The standard ECOPODE™ units sizes range from : 1.0  to 10 m³

Note that an ECOPODE™ unit should not exceed 10 m³ (because of mould considerations).

CORE-LOC™: The standard CORE-LOC™ units sizes range from : 1.0 to 11 m³

Note that a CORE-LOC™ unit should not exceed 11 m³.

The indicated unit volumes are standard values. However, in-between values can be made to suit the requirements of every project, notably other unit sizes already used in the past for which moulds are already available.

Armour units volumes lower than 1.0m³ are most of the time not cost-effective, due to the corresponding large number of units involved.


2. Armour concrete consumption and coverage:

The armour concrete consumption and coverage ratios are indicated in the design guidelines available at the bottom of this page.

  • Packing density: a non-dimensional parameter that characterizes placement density and allows comparison of the different types of armour units.
  • Consumption: concrete volume /m² of armour.
  • Number of units: number of units /m² of armour.
  • Porosity: percentage of voids in the armour taking into consideration the theoretical armour thickness.

In order to limit the possible settlements along the armour slope, the maximum number of rows is recommended not to exceed 20. This limit can be overruled based on model tests results.


3. Filter stone underlayer:

The underlayer rock categories are presented in the design tables. The indicated values have been calculated assuming a concrete specific gravity of 2.4 t/m³ and a rock specific gravity of 2.6 t/m³.

It is CLI’s opinion that the design engineer’s choice of the underlayer stone categories should be based on finding the most suitable underlayer for his specific project. It depends in particular on the quarry characteristics, the filter rules and several additional parameters.

The thickness of the underlayer presented in the design table is calculated using a thickness coefficient (Kt) of 1.15. This is a value considered by CLI to be appropriate for preliminary calculations. However it is noted that the CIRIA rock manual (CIRIA 2007) recommends a thickness coefficient around 0.9, varying in function of rock shape.


4. Hydraulic stability:

Design KD value:

During design stage, the stability coefficients are selected as a function of the achievable packing density on site.

The standard Hudson’s design KD values for slightly breaking or non-breaking wave conditions are:


ACCROPODE™

• 15 on breakwater trunk sections

• 11.5 on breakwater roundheads


ACCROPODE™ II

• 16 on breakwater trunk sections

• 12.3 on breakwater roundheads


ECOPODE™

• 16 on breakwater trunk sections

• 12.3 on breakwater roundheads


CORE-LOC™

• 16 on breakwater trunk sections

• 13 on breakwater roundheads


The recommended Van der Meer stability number is:

ACCROPODE™: NS = HS/(∆ Dn50)= 2.7

ACCROPODE™ II: NS = HS/(∆ Dn50)= 2.8

ECOPODE™: NS = HS/(∆ Dn50)= 2.8

CORE-LOC™: NS = HS/(∆ Dn50)= 2.8

 where :

  •    HS =  significant wave height
  •    ∆ =  relative mass density
  •    Dn50 = nominal diameter

These coefficients are valid for armour slopes from 3H/2V to 4H/3V. However, for breaking waves and seabed slopes greater than 1%, lower KD values shall apply.


5. Roundheads:

The roundhead of the breakwater requires extra protection. CLI recommends that the armour unit size at the roundhead be increased by 30% over the size calculated for the trunk section. For CORE-LOC units, a 23% increase in size is recommended.

CLI also recommends a minimum distance of 2.5 Hs between the central point of the roundhead and the high water level on the armour layer. This is equivalent to a radius of 2.5 Hs, as illustrated in the design table. This minimum radius is recommended to achieve the required interlocking between the armour units.

The transition between two different sizes of CLI armour units, or between CLI units and rock armour, should be achieved with a 45° slope in the plane of the underlayer.

For further details, such as concrete consumption for a specific unit volume or additional information regarding quantities surveys, please do not hesitate to contact CLI. 

CLI provides laboratories with the model units they need for their studies. Several sizes are made available for rental to laboratories for stability testing of specific projects. Units are hired on first-come-first-served basis and are reserved upon receipt of the order confirmation from the hirer. In the case the required unit sizes are not readily available; CLI can produce the units provided that sufficient lead-time is allocated.

We have recently performed a quality control on our mortar model units based on different parameters such as the water absorption, the final weight after water absorption, and the weight variation. This remarkable process has enabled us to adjust the characteristics and thus the overall quality of the model units.

For a first use of these model units or/and in case of 3D model tests, a CLI specialist can be sent to the laboratory to help perform the initial placement of the model units and train the laboratory staff to repeat this task. CLI’s assistance is highly recommended to ensure that this initial placement quality meets the requirements of the technique and thus the success of the tests.

In case on site technical assistance is not requested by the laboratory, CLI specialists provide remote assistance during model tests by commenting photos and videos sent to them by the laboratory as the placement of the units and tests progress.  Technical information intended to help the laboratories in placing the units and conducting the physical modelling are also available upon request.

The other services provided in this context include the review of the cross-sections to be tested and comments on the test results obtained, and on the final armour design if necessary.

Feedback from construction sites enables the technologies to be updated. For a better understanding of the phenomena connected to hydraulic stability, systematic tests are regularly undertaken by SOGREAH’s laboratory.

Physical model tests related to research thesis are also conducted in cooperation with external partners.

Other research is carried out concerning the units’ robustness and the moulds for example, in order to improve the units’ performance over time and practical aspects.

“Provision of best quality model units from a substantial ready stock”

Comprehensive and continuous research has been carried out into CLI’s single-layer solutions since the early 1980s.

Specific design tests have been performed in several laboratories and on most of the 250 applications completed to date.

 

3D scale model 2D scale model Assistance in placing model units

 

Comprehensive and continuous research has been carried out into CLI’s single-layer solutions since the early 1980s.

Specific design tests have been performed in several laboratories and on most of the 250 applications completed to date.

 

3D scale model 2D scale model Assistance in placing model units

 


Useful documents to download

MOBILIZATION – SUBLICENSING STAGE

“TECHNICAL ASSISTANCE FROM CLI ALLOWS CONTRACTORS TO BENEFIT FROM CLI’S EXPERIENCE TO DEFINE CONSTRUCTION METHODS AND OPTIMIZE CONSTRUCTION COSTS, WITH MINIMUM CONSTRAINTS OR RISKS“

CLI assists the selected Designer by reviewing and commenting the final design, and if indeed it complies with the latest CLI guidelines, the sublicense can then be granted to the Contractor in charge of the casting and placing works.

As soon as the contractor is awarded the works and on his signal, CLI draft a sublicense text incorporating the financial terms established at tender stage.

The sublicense is a standard contract in which the IP related clauses, the detailed technical assistance and other necessary contractual obligations of both parties are indicated.

 

Once the sublicense is signed, the technical services can be provided in the following chronological order:

- Formwork drawings;

- Technical Information Document;

- positioning drawings.

A number of site visits are scheduled based on the concrete volume and project complexity.

A preliminary meeting with the contractor usually takes place as soon as the sublicense is signed to fine tune the services to be provided in function of the contractor time schedule, objectives/deadlines, and his Construction Methods.

It is to be noted that the necessary information enabling those in charge of the supervision of the works to perform their role are systematically provided to them. 

The sub-licence is usually awarded to the contractor responsible for work on the armour. Sometimes it can be signed between CLI and the Owner, when the latter wishes his Engineer to be fully involved in the works.

CLI will then provide the same services, with the technical information being made available to the contractor to ensure that the work is carried out in accordance with best practice.


Useful documents to download

ACCROPODE™
ACCROPODE™ II
CORE-LOC™
ECOPODE™

CONSTRUCTION STAGE

“CLI SERVICES ARE THE ASSURANCE OF MEETING THE ESTIMATED CONCRETE QUANTITIES AND THE CONSTRUCTION TIME SCHEDULE – NO MISESTIMATES OR ADDITIONAL COSTS”

After initial contact on site in the presence of the contractor’s and Engineer’s staff involved, CLI is able to begin the corresponding training, either at the start of the units fabrication or at the start of placing operations. Site visits are requested at least 3 weeks in advance.

A preliminary meeting on site is ideal for organising the continuation of technical assistance, unless the first site visit corresponds to the start of fabrication. The contractor will then have taken care to accept the forms, finalise his fabrication methods and the concrete formula.

When the fabrication process is started and produces the required results in terms of working rate and strength, a production sheet is sent regularly for comment and monitoring by the CLI technician in charge of the application.

About one month before placing begins, the contractor contacts the CLI technician to finalise the placing method. At that time, it is also necessary for CLI to obtain all useful information for preparing the first placing drawings.

The visit planned at the start of placing is essential for the installation work to begin correctly.

It begins systematically with a dry placing test during which the placing team can familiarise itself with the technique and begin learning how to use it.

It is absolutely essential for there to be confidence between CLI and the site workers, to enable fruitful discussion and ensure that the work goes ahead smoothly.

1. VIEW THE TYPICAL SEQUENCE OF CLI TECHNICAL ASSISTANCE DURING IMPLEMENTATION

Assistance on Site

Typical sequence of technical assistance provided during implementation to help the Contractor meet the Project requirements:

  • Assistance to Contractor to help define his Construction Methods Statements
  • Supply of the mould drawings, provision of list of recommended manufacturers, and assistance to acquire second –hand moulds when existing
  • Supply of technical information and assistance as far as necessary for casting, handling, storing and placing the armour units; Training of staff and operators on model units, mock-up sections in site offices and in the field
  • Supply of the positioning drawings – 2D or 3D positioning depending on the Contractor’s technology

Supply of guidelines for the Operation and Monitoring Manuals related to the artificial armour

All site visits are performed by the team of experienced CLI specialists assigned to the project

In addition to timely site visits, interactive support is made available to the Contractor throughout the construction until completion of the works

 

Visit at the start of placement Placing drawings supplied to contractors

 

2. ADVANTAGES AND PRACTICAL ASPECTS

 

ACCROPODE™ ADVANTAGES

  • Sturdy units and safe packing density leading to no breakage during lifetime of the structure
  • Limited settlement during storms allowing to maintain a safe level of packing density
  • In case of exceptional breakage: proven self healing capacity
  • Nearly two hundred applications around the world

PRACTICAL ASPECTS OF THE ACCROPODE™ ARMOUR CONSTRUCTION

Practical formwork

Quick stripping and assembly of the two shells

Concrete strength specifications for ACCROPODE™

The compression values given below are those for cylinders. 
The following relation should be used to determine equivalent values for cubes: Fck Cylinder = 0.8 x Fck Cube (ref. BS 1881)

  Units ≤ 4 m³ 5 m³≤ Units ≤ 15 m³ Units  > 15 m³
Minimum strength for form stripping Fck Cyl  6 MPa  7 MPa  10 MPa
Minimum strength for handling the unit Fck Cy 15 MPa 20 MPa 25 MPa
Minimum strength for placing the unit Fck Cyl 25 MPa 30 MPa 30 MPa

Simple casting

  • Min. area required to cast one unit of height H: 1.50H2 

  • Typical daily standard production rate : one unit per mould
Depending on the Contractor's selected methods, the rate of 2 units per mould per day can be achieved

Storage and handling

  • Forklifting is effective for handling small to medium size units 
  • Large units are handled by sling
  • ACCROPODE™ units can be stored one on top of the other 
  • Min. area required to store 10 units on one level: 8H2, where H = ACCROPODE™ unit height

Fast placement

Principle: each unit is placed in a random attitude to obtain the specified packing density, using GPS.  The positioning principle is based on a predetermined grid aimed at achieving optimum keying of the units, with the theoretical grid shown on the placement drawings and allowing reliable QA/QC procedures.

Placement rates

 

Placement rates (using cable cranes) - Monthly average

Units sizes Average placing time per unit
Small sizes 5 to 8 mins
Medium sizes 9 to 12 mins
Large sizes 12 to 20 mins

NB: Higher rates can be obtained using a tailored method

 


 

ACCROPODE™ II ADVANTAGES

In addition to the advantages acquired from the ACCROPODE™ first generation, the ACCROPODE™ II has the following advantages:

  • A more balanced unit geometry;
  • Optimised volume of armour concrete
  • Easy placement of units in any condition;
  • Confidence and Reliability with regard to theoretical costs
  • Less breakage during fabrication and placement
  • Minimum maintenance:

Good records: First generation unit (ACCROPODE™) has shown to require minimum maintenance once installed;

Considering that the second generation (ACCROPODE™ II) offers improvements on key aspects, it is then expected to require
even less maintenance

PRACTICAL ASPECTS OF THE ACCROPODE™ II ARMOUR CONSTRUCTION

Reliable, easy formwork

  • Two symmetrical steel shells
  • No base plates required
  • Quick-assembly bolting system
  • Ease of stripping and reassembly

Concrete strength specifications for ACCROPODE™ II

The compression values given below are those for cylinders. 
The following relation should be used to determine equivalent values for cubes: Fck Cylinder = 0.8 x Fck Cube (ref. BS 1881)

  Units ≤ 4 m³ 5 m³≤ Units ≤ 15 m³ Units  > 15 m³
Minimum strength for form stripping Fck Cyl  6 MPa 7 MPa 10 MPa
Minimum strength for handling the unit Fck Cyl 15 MPa 20 MPa  25 MPa
Minimum strength for placing he units Fck Cyl 25 MPa  30 MPa  30 MPa

Simple casting

  • Min. area required to cast one unit of height H: 1.55H2
  • Typical daily standard production rate: one unit per mould
Depending on the Contractor's selected methods, the rate of 2 units per mould per day can be achieved 

Safe storage and handling by crane or forklift

  • Units can be stored one on top of the other or nested on one or more levels, provided that ground conditions are suitable
  • Min. area required to store 10 units on 1 level: 7.1H2 , where H = ACCROPODE™ II  unit height

Simplified placement

The new ACCROPODE™ II shape enables units to be placed much more rapidly on site using simple rules, since the random attitude of each unit is more naturally obtained, with fewer constraints in terms of orientation.
The use of a safe remote-release hook is recommended for unit placement.
Placement operations under water are enhanced using GPS, ensuring close adherence to the theoretical grid shown on the placement drawings and allowing reliable QA/QC procedures.

Placement rates

 

Placement rates (using cable cranes) - Monthly average

Units sizes Average placing time per unit
Small sizes 4 to 6 mins
Medium sizes 7 to 10 mins
Large sizes 10 to 20 mins

NB: Higher rates can be obtained using a tailored method

 


 

CORE-LOC™ ADVANTAGES

  • Highly dissipating and most cost-effective
  • Superior hydraulic stability
  • Ideally suited to moderate wave conditions
  • Least concrete consumption
  • Substantial number of projects worldwide

PRACTICAL ASPECTS OF THE CORE-LOC™ ARMOUR CONSTRUCTION

Practical formwork 

  • Quick stripping and assembly of the two shells
  • Wheels reduce the use of handling equipment on the casting yard

Concrete strength specifications for CORE-LOC™

The compression values given below are those for cylinders. 
The following relation should be used to determine equivalent values for cubes: Fck Cylinder = 0.8 x Fck Cube (ref. BS 1881)

  All unit sizes
Minimum strength for form stripping Fck Cyl 10 MPa
Minimum strength for handling  the units Fck Cyl 25 MPa
Minimum strength for placing the units Fck Cyl 35 MPa

 Simple casting

  • Min. area required to cast one unit of height C: 1.65C2
  • Typical daily standard production rate: one unit per mould 

Minimum storage and easy handling

  • Forklifting is effective for handling small to medium-sized units
  • Large units are handled by slings
  • CORE-LOC™ units can be stored nested on one or more levels in a ‘‘herringbone’’ fashion
  • Min. area required to store 10 units on 1 level: 5.2C2, where C = CORE-LOC™ unit height

Fast placement

Principle: each unit is placed in a random attitude to obtain the specified packing density, using GPS.  The positioning principle is based on a predetermined grid aimed at achieving optimum keying of the units, with the theoretical grid shown on the placement drawings and allowing reliable QA/QC procedures.

Placement rates

 

Placement rates (using cable cranes) - Monthly average

Units sizes Average placing time per unit
Small sizes 5 to 8 mins
Medium sizes 8 to 10 mins
Larges sizes 10 to 15 mins

NB: Higher rates can be obtained using a tailored method

 


 

ECOPODE™ ADVANTAGES

  • Natural appearance: the units are moulded so that they resemble the geomorphology of the area in which they are to be used, when concrete armour units with smooth skin surfaces are less accepted by local communities and users of environmentally sensitive coastlines.
  • Several types of rock finish can be produced: limestone, sandstone and basalt with associated typical colours.
  • The other assets of the ECOPODE™ unit just like the ACCROPODE™ II units are its enhanced hydraulic performance, greater sturdiness and easier placement.
  • Can be placed in the visible upper part of the breakwaters, above the low water line, over ACCROPODE™ II units which have similar geometry
  • Easy placement and minimum maintenance:

The ECOPODE™ unit just like the ACCROPODE™ II unit is easy to place (minimum placement rules) and requires less maintenance than the first generation ACCROPODE™ unit.

PRACTICAL ASPECTS OF THE ECOPODE™ ARMOUR CONSTRUCTION

Formwork

  • Two symmetrical shells with bottom plates, assembled with quick assembly bolting system
  • The inside of the shells is architectured by means of appropriate coatings
  • ECOPODE™ moulds are specially made of fibre glass shells to obtain the rock-like appearance, backed with a steel spider frame mounted on wheels.

Concrete strength specifications for ECOPODE™ 

The compression values given below are those for cylinders. 
The following relation should be used to determine equivalent values for cubes: Fck Cylinder = 0.8 x Fck Cube (ref. BS 1881)

  Units ≤ 4 m³ 5 m³≤ Units ≤ 10 m³
Minimum strength for form stripping Fck Cyl  6 MPa  7 MPa
Minimum strength for handling  the units Fck Cyl 15 MPa 20 MPa
Minimum strength for placing the units Fck Cyl 25 MPa 30 MPa

Casting 

  • Min. area required to cast one unit of height H: 2H2
  • Typical daily standard production rate: one unit per mould

Handling 

  • Forklifting is effective for handling units up to 3 m3
  • Large units are handled with slings

Storage 

  • ECOPODE™ units are stored on one level placed close to each other, on ground with a sufficient bearing capacity.
  • Min. area required to store 10 units of height H: 7.1 H2, where H = ECOPODE™ unit height

Placement 

Principle: each unit is placed in a random attitude to obtain the specified packing density, using GPS.  The positioning principle is based on a predetermined grid aimed at achieving optimum keying of the units, with the theoretical grid shown on the placement drawings and allowing reliable QA/QC procedures.

The grid spacings will match those of the smooth skin ACCROPODE™ II underneath.

Placement above water level is carried out visually or using GPS in order to obtain the proper packing.

Placement rates

 

Placement rates (using cable cranes) - Monthly average

Units sizes Average placing time per unit
Small sizes 6 to 8 mins
Medium sizes 10 to 12 mins
Large sizes 12 to 15 mins


NB: Higher rates can be obtained using a tailored method

 


 

Practical aspects - Pictures

 

During construction, the contractor applies the CLI technique with all the useful practical information.

The Engineer’s representatives are also sent information enabling them to check the correct implementation of the technique.

The Engineer is encouraged to take an active part in the site meetings so that all the people concerned follow the same rules and share the same objectives right from the outset.

A monitoring program can be outlined once the installation of the primary armour is completed.


Useful documents to download

ACCROPODE™
ACCROPODE™ II
CORE-LOC™

POST CONSTRUCTION

“MORE THAN 250 SINGLE LAYER APPLICATIONS IN 30 YEARS SUPPORTED BY CLI’S EXPERTISE HAVE DEMONSTRATED THE RELIABILITY OF THE CONSTRUCTION TECHNIQUE BASED ON A SOUND DESIGN THUS ELIMINATING MAINTENANCE COST“

On completion of casting operations, moulds shall be cleaned and oiled and preferably stored under shelter for future use.

At the end of installation of all units on the breakwater, monitoring guidelines will be issued to all parties involved, indicating what should be periodically done in conjunction with the Owner during the lifetime of the structure and following storms, seismic events or any other unforeseen event.

Overview of CLI services

“THE EXPERIENCE GATHERED THROUGH MANY SINGLE LAYER PROJECTS DURING THE DESIGN STAGE, PHYSICAL MODELLING AND ON THE FIELD IN VARIOUS CONDITIONS AND OVER MANY YEARS IS MADE AVAILABLE TO THE USERS.”

Customised technical services are offered according to the requirements of each customer, from the early design stage through physical model studies until the end of construction works, responding to the quality, safety and cost-saving requirements of the project:

  • Alternatives and comments on designs are offered free of charge and without obligation at the various stages of the project (preliminary design, calls for tender, etc.) giving the clients, engineers and contractors an opportunity to assess the advantages of the technique while benefiting from feedback gained on numerous projects.
  • Physical modelling is strongly recommended for optimisation purposes. Model units are supplied to any qualified hydraulics laboratory. When necessary, a CLI technician can be sent to the laboratory to help perform the initial placement of the model units and train the laboratory staff to repeat this task.
  • Technical on-site services are supplied during key construction phases. Practical advice is given on manufacturing, handling and positioning. A CLI specialist is assigned to each project to follow-up casting and placement progress, thus helping the contractors to implement the technologies properly. It has also been recognized that early involvement of CLI at the actual project site is preferred: i.e. well thought casting and placement operations can benefit the Contractor as the CLI specialist can discuss and suggest where improvements can be made.

A monitoring manual will be issued by CLI to all involved parties in perspective of possible maintenance, especially during the first years following construction.

Owners are encouraged to contact CLI in case unusual evolution of the structure over time (overall settlement of the rubble mound, armour settlement, breakage of units following major storms, etc...).

CLI remain open to help the Owner carry out investigations if required.

Overview of CLI services

“THE EXPERIENCE GATHERED THROUGH MANY SINGLE LAYER PROJECTS DURING THE DESIGN STAGE, PHYSICAL MODELLING AND ON THE FIELD IN VARIOUS CONDITIONS AND OVER MANY YEARS IS MADE AVAILABLE TO THE USERS.”

Customised technical services are offered according to the requirements of each customer, from the early design stage through physical model studies until the end of construction works, responding to the quality, safety and cost-saving requirements of the project:

  • Alternatives and comments on designs are offered free of charge and without obligation at the various stages of the project (preliminary design, calls for tender, etc.) giving the clients, engineers and contractors an opportunity to assess the advantages of the technique while benefiting from feedback gained on numerous projects.
  • Physical modelling is strongly recommended for optimisation purposes. Model units are supplied to any qualified hydraulics laboratory. When necessary, a CLI technician can be sent to the laboratory to help perform the initial placement of the model units and train the laboratory staff to repeat this task.
  • Technical on-site services are supplied during key construction phases. Practical advice is given on manufacturing, handling and positioning. A CLI specialist is assigned to each project to follow-up casting and placement progress, thus helping the contractors to implement the technologies properly. It has also been recognized that early involvement of CLI at the actual project site is preferred: i.e. well thought casting and placement operations can benefit the Contractor as the CLI specialist can discuss and suggest where improvements can be made.

Useful documents to download

ACCROPODE™
ACCROPODE™ II
CORE-LOC™