Articulating Concrete Mattress (ACM) Systems A proprietary method, Articulating Concrete Mattresses are systems of concrete elements tied together with either UV-stabilized rope or stainless steel cables to form a flexible mattress that can be connected to other mattresses to form modular protection systems. Different manufacturers construct elements in various shapes, sizes, and thicknesses. Most ACM systems have been lab tested, project histories documented, and manufacturer's support (including design and installation) are readily available. Very versatile, can be used for bank protection, grade control, channel lining, cart paths, fords, boat launches, and as a cover for exposed pipelines. Many projects require a geotextile filter underlayer. The entire mat system can be buried, and/or spaces between elements can be vegetated. ACM systems can be totally removed and reinstalled, an important consideration for pipeline repair. Can also be removed & reconfigured for changing stream conditions For grade control applications the downstream ends of the mat can be allowed to “float" and then self-adjust, (hinge) adjusting to local scour and/or knickpoint migration. Strong anchoring systems and/or deep keys at the upstream and upslope boundaries of the mat system are required. Knowledgeable and experienced designers, manufacturers, and installers are critical to project success. As with many techniques, the devil is in the details

From the Submar, Inc. website Used primarily for inland erosion control projects on shorelines, streams & rivers. 8” 12” 38o 4½” Shape locks in plant roots SUB MAR MAR SUB Mats are connected with stainless steel cables or non-metal straps to create a unitized erosion control system. Additional benefits of this system are the ability to remove, replace, or relocate, if required. SPECIFICATIONS MATTRESS TYPE: REVETMENT MATTRESS DIMENSIONS: 8’ X 20’ X 4½” MATTRESS WEIGHT: AIR 6,200 LBS, UNDERWATER 3,600 LBS CONCRETE DENSITY: 145 LBS. PER CU. FT., 4,000 PSI 160 ELEMENTS: 5/8” ULTRA VIOLET STABILIZED COPOLYMER EXTRUDED FIBER ROPE, MINIMUM TENSILE STRENGTH 9,500 POUNDS

400 feet of extruded copolymer rope unitizes the 160 mat elements From the Submar, Inc. website 400 feet of extruded copolymer rope unitizes the 160 mat elements to form this mat. Wire rope is also used in some designs.

From the Submar, Inc. website Concrete is poured into the mold and elements are cast onto the fiber rope. Optional non-abrasive pads are attached for overlaying pipelines.

Quite flexible

Flexible Submar mini-mat modeled by Cleophus

Flexible Submar mini-mat on couch Quite flexible Flexible Submar mini-mat on couch

Versatile!!

Mats can be transported by truck, barge, boat, & even helicopter. From the Submar, Inc. website Mats can be transported by truck, barge, boat, & even helicopter.

From the Submar, Inc. website Owingsville Discharge On this hilly terrain near Morehead, Kentucky, vehicular traffic traversing this ROW has caused erosion, exposing two 30-inch pipelines. Owingsville Discharge Mile Post 527.38 Lewis County, KY I.E.C.A. Photo Contest 1st Place - 2002 Challenge of Erosion Control 1st

are used to position the mats over the target. From the Submar, Inc. website Mechanical spreader frame used for underwater installations. SONIC BEACONS Beacons attached to the mat handling frame are used to position the mats over the target.

www.E-senss.com From: www.E-SenSS.com

Overlapped & banded ACM Key trench Pix by Derrick Overlapped & banded ACM

From Submar, Inc. Designated “Louisiana Scenic Stream” Mats are installed and connected prior to soil cover. Downstream curve before construction. Pipelines exposed in the creekbed. After mat installation, mats on the banks were backfilled to assist revegetation. Gravel was placed over the mats in the creekbed. Downstream curve 5 months after installation. Pipelines are no longer visible in the creekbed. Mats are not visible anywhere in this scenic reach of stream. From Submar, Inc. Designated “Louisiana Scenic Stream” Big Creek Crossing Grant Parish, Pollock, LA LOUISIANA DEPARTMENT OF WILDLIFE & FISHERIES SCENIC RIVER AUTHORITY

Dry Gully Crossing, Cypress, Texas Before 1 Year Later Mats are buried for natural appearance Dry Gully Crossing, Cypress, Texas From Submar, Inc.

5 Years After Installation Vermillion County, Montezuma, IN Before After Installation 3 Years After Installation Before 5 Years After Installation 7 Years After Installation EXCELLENT WILLOW GROWTH THROUGH ACM From Submar, Inc. Raccoon Creek Vermillion County, Montezuma, IN SUB MAR

Jones County, Sharon, Mississippi Before Installation After Dewatering Creek During Installation Looking Upstream 1½ Years Later After Installation After Installation 3 Months After Installation Wetland looking good Reedy Creek @ MP 736.55 Jones County, Sharon, Mississippi Gas Pipelines - Transco SUB MAR

Jones County, Sharon, Mississippi 4½ Years Later Wetland plants growing through mat Reedy Creek @ MP 736.55 Jones County, Sharon, Mississippi Gas Pipelines - Transco SUB MAR

“Hinged” ACM grade control, more mats can be added as needed Pickens, MS. ACM “tail” was laid on flat bathymetry, headcuts have migrated US and mat has adjusted and arrested the headcut “Hinged” ACM grade control, more mats can be added as needed

This PowerPoint presentation was developed & built by Dave Derrick This PowerPoint presentation was developed & built by Dave Derrick. Any questions or comments, call my personal cell @ 601-218-7717, or email @ d_derrick@r2d-eng.com Enjoy the information!! “Based on the interagency publication, Stream Corridor Restoration: Principles, Processes, and Practices, this introductory training covers: Stream corridor ecosystems and their components Ecological processes, structure & functions Characterization and analysis of stream corridors Development of a restoration plan Design, implementation, monitoring, and Integrated, iterative, adaptive, flexible approaches”.