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TheMaccaferriACBMsystemfeaturesatransportableandpatented system, enabling production to be taken direct to the launchsite.This removesoneof themostexpensivecomponents of equivalent systems: freight costs.The individual blocks, connected together by polymer cables, are a distinctive shape, specifically developed to provide enhanced protection to underwater infrastructure.

The Maccaferri Articulated Concrete Block Mattress (ACBM) provides the owners and operators of underwater infrastructure, efficient and cost effective protection to their cables and pipelines.Simpleinconcept,yetfocusedindetail,MaccaferriACBMis increasingly popular for contractors requiring a rapid-to-deploy protection system that minimises on-site time.

ACBM

For over 30 years, Maccaferri has provided engineered solutions for the protection, anchoring, ballasting and stabilisation of marine subsea pipelines.

MaccaferriACBMprovidesanewcombinationofbenefits,offering cost effective “on-site” manufacturing, simple deployment and proven reliability.Finally, the Maccaferri ACBM production enablescustomisation of the mattress dimensions to suit the project requirements, not to suit the transportation from factory to dockside.

ConcretemattressesproducedwiththeMaccaferriACBMsystem are compliant with strict QA/QC procedures in order to accord with the requirements of International Standards.Qualified supervisors and skilled manpower check each production run for compliance, ensuring the quality of the final mattress.

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Maccaferri ACBM is a rectangular array of concrete blocks,intimately connected together with polymer cables to form a single mattress. The cables are looped on each side of the mattress to facilitate lifting and deployment of theACBM.The blocks arespecificallyformedtograntthemattressahighdegreeofflexibilityin 3 dimensions. Specific marine-grade concrete is used to deliver consistenttechnicalperformanceofthemattress.Materialsusedare chemically inert and non-degradable in sea water, offering a performance life of over 25 years.

An important consideration during the design of underwater pipelines is their stability once laid upon the sea bed. The combination of forces from waves and currents can destabilise the pipeline, causing movement. If the self-weight of the pipeline is insufficient to restrain this movement, the pipeline will require anchoring; MaccaferriArticulated Concrete Block Mattresses (ACBM)provide a proven solution.

TechnicalFeatures

ABCM - Dimensions [m] and Total Mattress Weight in Air [Tons]

1.930.20

1.92.32.62.93.33.63.9

0.30

2.73.23.64.14.65.05.5

0.25

2.42.83.23.64.04.44.8

0.15

1.51.72.02.22.52.73.0

Width

ThicknessLength

3.143.674.204.735.265.796.32

2.260.20

2.32.73.03.43.84.24.6

0.30

3.23.74.34.85.35.96.4

0.25

2.83.33.74.24.75.25.6

0.15

1.72.02.32.62.93.23.5

2.590.20

2.63.03.53.94.44.85.2

0.30

3.64.34.95.56.16.77.3

0.25

3.23.74.34.85.45.96.4

0.15

2.02.32.63.03.33.64.0

2.920.20

2.93.43.94.44.95.45.9

0.30

4.14.85.56.26.97.68.3

0.25

3.64.24.85.46.06.77.3

0.15

2.22.63.03.33.74.14.5

ABCM - Dimensions [m] and Total Submerged Mattress Weight [Tons]

1.930.20

1.11.31.51.71.92.12.3

0.30

1.61.82.12.42.62.93.2

0.25

1.41.61.82.12.32.62.8

0.15

0.81.01.11.31.41.61.7

Width

ThicknessLength

3.143.674.204.735.265.796.32

2.260.20

1.31.51.82.02.22.42.7

0.30

1.82.22.52.83.13.43.7

0.25

1.61.92.22.42.73.03.3

0.15

1.01.11.31.51.71.82.0

2.590.20

1.51.82.02.32.52.83.0

0.30

2.12.52.83.23.53.94.3

0.25

1.82.22.52.83.13.43.7

0.15

1.11.31.51.71.92.12.3

2.920.20

1.72.02.32.62.83.13.4

0.30

2.42.83.23.64.04.44.8

0.25

2.12.42.83.13.53.94.2

0.15

1.31.51.71.92.12.42.6

ABCM - Mattress Specific Weight inAir VS Submerged [Tons/m2]

MattressThickness

0.15 m

0.20 m

0.25 m

0.30 m

Specific Weightin Air

0.24

0.32

0.39

0.45

Specific SubmergedWeight

0.14

0.18

0.23

0.26

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Twin-ROV Frame for double-speed, safe and

efficient installation

WhyMaccaferri ACBM?

The Maccaferri ACBM System not only redefines themanufacture of concrete mattresses, but is a complete solution including consultancy support and specific lifting-frames for faster, safer and cost effective installations.

Consultancy SupportMaccaferrioffers:• Mattress concept design - Customised mattress dimensionsandconcretemix,specificallyfortheproject.

• Mattress stability analyses - Analysis based upon local project parameters including hydrological data, pipe or cable features and wave and current forces.

• Mattress lifting arrangement - The parabolic deformation of a mattress during lifting can be configured to establish safe conditions for mattress handling.

Installation FramesWhen working offshore, contractors need reliable and effective equipment, enabling them to focus on the job in hand.Maccaferri offersACBM installation frames thatsatisfy this demand;• Manual - For onshore mattress handling and diver-

assisted installation• Automatic - ROV friendly for deep-water installationAutomatic frames feature mechanical release systems that can be activated by Remotely Operated Vehicles (ROVs).Bothautomaticandmanualreleaseframesaredesigned,manufactured and certified to provide reliable, rapid and safe mattress handling on and off-shore.Customised frames for the deployment of multiple, or special arrangements of mattresses, are available upon request.

Cross Section

Plan View

Plan View

Cross Section

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Monaco - Monte Carlo Messina - Italy

Features• “On-location” manufacturing using Patented

formwork• Rapid production and installation• Technically proven and cost effective• Customisable mattress design• Strict QA/QC procedures and controls

Benefits

Advantages

Maccaferri Articulated Concrete Block Mattresses (ACBM) provide the ultimate protection for underwater infrastructure including oil and gas pipelines, communications and electrical cables, aqueducts and sewage outfalls.

• Lifetimeunitflexibility• Minimaltransportationcosts• Modularunitssimplifyconstruction

• Effectivestabilisationand/orsupportofpipe-lines, cables or other services

• Long-termprotection fromanchor impact orother collisions

• Prevents scouring and resultant free-spanproblems

• Mattress dimensions are optimised for theproject requirements, not for the efficiency of transportation.

Decreasing Cost

IncreasingEfficiency(Technical and Productive)

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Officine Maccaferri S.p.A.Via J. F. Kennedy, 1040069 Zola Predosa (Bologna) - ItalyTel. ++39 051 6436000 Fax ++39 051 6436201comes@maccaferri.com

www.officinemaccaferri.com

© 2013 Officine Maccaferri S.p.A. - Bologna - Italy - Print: Litografia Zucchini - Project: graficamonti.com - Photo: Archivio Officine Maccaferri

Bureau Veritas Certified Quality System Company withAccredia’s and Ukas’s accreditation

Officine Maccaferri Group Profi le

Consultancy and PartnershipMaccaferr i ’s motto is ‘Engineer ing a Better Solut ion’; We do not merely supply products, but work in partnership with our c l ients, offer ing technical expert ise to del iver versat i le, cost effect ive and environmental ly sound solut ions. We aim to bui ld mutual ly benef ic ial re lat ionships with c l ients through the quality of our service and solutions .

Organisational StructureOff ic ine Maccaferr i is at the heart of the Maccaferr i Industr ial Group. I ts continued growth is based upon long-held values of innovation, integr ity, excel lent service and respect for the environment.Maccaferr i ’s v is ion is to become a leading internat ional provider of advanced solut ions to the c iv i l engineer ing and construct ion market. Implementing a strategy of vert ical integrat ion, Maccaferr i researches, manufactures, designs, suppl ies and constructs solut ions within i ts target markets.The capabi l i ty of the business continues to expand due to a strategic plan to open new markets and grow exist ing ones; Maccaferri now offers advanced engineered solutions from solutions from coastal protection to reinforced soil structures and from rockfall mitigation to tunnelling systems.With over 2000 employees, 26 manufactur ing faci l i t ies and local operat ions in 100 countr ies around the world, Maccaferr i can truly c laim to have a global presence with local focus.

Maccaferri: Engineering a Better Solution

Founded in 1879, Officine Maccaferri soon became a technical reference in the design and development of solut ions for erosion control and retaining structures. S ince then, through technological innovation, geographical expansion and focussed divers i f icat ion, Maccaferr i now offers solut ions at a global level for a wide range of civil and environmental engineering appl icat ions.