articulating concrete mattress (acm) systems a proprietary method, articulating concrete mattresses...
TRANSCRIPT
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
SUBMAR
MARSUB
SPECIFICATIONSMATTRESS TYPE: REVETMENTMATTRESS DIMENSIONS: 8’ X 20’ X 4½”MATTRESS WEIGHT: AIR 6,200 LBS, UNDERWATER 3,600 LBSCONCRETE DENSITY: 145 LBS. PER CU. FT., 4,000 PSI160 ELEMENTS: 5/8” ULTRA VIOLET STABILIZED COPOLYMER EXTRUDEDFIBER ROPE, MINIMUM TENSILE STRENGTH 9,500 POUNDS
8”
12”38o
4½”
Used primarily for inlanderosion control projects on
shorelines, streams & rivers.
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.
Shape locks in plant roots
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.
From the Submar, Inc. website
Quite flexible
Flexible Submar mini-mat modeled
by Cleophus
Quite flexible
Flexible Submar mini-mat on couch
Versatile!!
Mats can be transported by truck, barge, boat, & even helicopter.
From the Submar, Inc. website
Owingsville Discharge Mile Post 527.38
Lewis County, KY
I.E.C.A. Photo Contest1st Place - 2002
Challenge of Erosion Control
1st
On this hilly terrain near Morehead, Kentucky, vehicular traffic traversing this ROW has caused erosion, exposing two
30-inch pipelines.
From the Submar, Inc. website
SONIC BEACONS
Beacons attached to the mat handling frame are used to position the
mats over the target.
Mechanical spreader frame used for
underwater installations.
From the Submar, Inc. website
From: www.E-SenSS.com
www.E-senss.com
Overlapped & banded ACM
Key trench
Pix by Derrick
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.
After mat installation, mats on the banks were backfilled to assist revegetation. Gravel was
placed over the mats in the creekbed.
Mats are installed and connectedprior to soil cover.Pipelines exposed in the creekbed.
Downstream curvebefore construction.
LOUISIANA DEPARTMENT OF WILDLIFE & FISHERIESSCENIC RIVER AUTHORITY
Designated “Louisiana Scenic Stream”Big Creek Crossing
Grant Parish, Pollock, LA
From Submar, Inc.
Before 1 Year Later
Dry Gully Crossing,Cypress,
Texas
Mats are buried for natural appearance
From Submar, Inc.
Before BeforeAfter Installation 3 YearsAfter Installation
5 Years After Installation
Raccoon CreekVermillion County, Montezuma, IN
SUB MAR
7 Years After Installation
EXCELLENT WILLOW GROWTH THROUGH ACM
From Submar, Inc.
LookingUpstream
Reedy Creek @ MP 736.55Jones County, Sharon, Mississippi
SUBMAR
Before Installation During InstallationAfter Dewatering Creek
Gas Pipelines - Transco
1½ Years Later
After Installation3 MonthsAfter Installation
After Installation
Wetland looking good
Reedy Creek @ MP 736.55Jones County, Sharon, Mississippi
SUBMAR
Gas Pipelines - Transco
4½ Years Later
Wetland plants growing through
mat
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.
Any questions or comments, call my personal cell @ 601-218-7717, or email @ [email protected]
Enjoy the information!!