This document provides specifications for Submar Inc.'s Revetment Mattress, including its dimensions, weight, concrete density, fiber rope material used, and intended primary use for inland erosion control projects. It describes the mat's perimeter elements and fiber rope in detail. Installation photos of various projects demonstrate revegetation and grade control results.

2. SUBMAR, INC.
REVETMENT MATTRESS
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
8”
12”
38o
4½”
The Submar Revetment mat is used primarily for inland
erosion control projects on shorelines, streams and rivers.
SUB
MAR
MAR
SUB

3. The rope on the mat perimeter elements shall form lifting loops on
all four sides of the mat. The rope shall be an ultra-violet
stabilized copolymer extruded three strand fiber rope. Minimum
tensile strength shall be 9,500 pounds. The rope shall have a good
to excellent resistance to concentrated acids, alkalis and solvents.
The rope shall be impervious to rot, mildew, and degradation due
to marine organisms. The rope material shall not be affected by
continuous immersion in salt water.
5/8”
Copolymer Extruded Fiber Rope
Minimum breaking strength 9,500 lbs.
3/4”
Polypropylene Fiber Rope
Minimum breaking strength 7,500 lbs.
Three Strand Fiber Rope
SUB
M
AR

5. 8"
12"
38o
4½"
Geotextile Fabric
Shoreline or Streambed Subgrade
½“ Gap between mats
Contact area between concrete and
geotextile fabric is 64 in2
. The total
area of block is 144 in2
. Open area
is 44% of total surface area, this area
tends to fill in with sediment. This process
allows revegetation on the mat.

6. INSTALLATION

8. SUB
M
AR
Cowskin Creek @ M.P. 263
Sedgwick County, Wichita, KS
Submar Drawing No. AB1174
Before Installation
After Installation
During Installation
ConocoPhillips

9. REVEGETATION

10. South River near Conyers, GA
SB1878
During Construction
3 Yrs After Install
SUB
M
AR

11. SB1008
Rockhouse Creek
near
Hohenwald, TN
5 Years After Install
SB1008
SUB
M
AR

12. Mill Creek
near
Grover, SC
SB437

13. Dry Swamp Creek
Jones County, Laurel, MS
Submar Drawing No. AB1506
SUB
M
AR
Before Installation
During Installation
After Installation
4 Months After Installation 8 Months After Installation4 Years After Installation

14. Middle Oconee
River
Before
2 Years After Install
Clarke County
Athens, GA
SB1717
2 Years After Installation

15. Unnamed Ditch
Manatee County, FL
SB1613

16. Bucatunna Creek
@ MP 774.55
Clarke Co., MS
During Installation
After Installation
Submar Drawing No.
SB1026
SUB M
AR

17. SUB
M
AR
ANR Pipeline
Company
Arkabutla Creek @ M.P. 5670+56
Panola County - Como, MS
Submar Drawing No. AB1138
Before Installation
During Installation
After Installation 3 Months After Installation
1½ Years After Installation

18. SUB M
AR
North of Lambert Road
@ MP 474.5
Fayette County
Somerville, Tennessee
Submar Drawing No. SB1558

19. BoBo Bayou
Panola County
near
Mark, MS
AB1087
SUB
M
AR

20. SUB M
AR
Gas Pipelines - Transco
Cedar Creek @ M.P. 777.33
Clarke County, MS
SB1025
Before installation During Installation After InstallationAfter Construction
6 Years After Installation

21. SUB
M
AR
Before Installation Recoating the Pipeline
During Installation
After Installation
Senatobia Creek @ M.P. 345.36
Tate County, Senatobia, Mississippi
Submar Drawing No. AB1089
2 Years After Installation

23. This site was matted bank to bank.
Wetland vegetation has completely
Covered the mats with no planting of
Wetland plants. Natural revegetation.

24. GRADE CONTROL

25. Highway
Bridge
Beaver Dam
or log jam
Pipeline
Pipeline
Grade Control
Grade control can be naturally occurring or manmade. Natural grade control could be a beaver dam, accumulated alluvial
material, woody debris jams, or naturally hard to erode bed material. Examples of manmade grade control are highway
bridges, drop structures, dams, or pipelines. These hardened structures resist bed degradation and headcutting. Bed
degradation and headcutting cause streams to deepen and widen. Erosion is the number one cause of pollution in the U. S.,
according to EPA. Grade control plays an important role in stabilizing stream bed and banks, and preventing erosion.
Creekbed
Trees are an important part of the riparian corridor.
The riparian corridor is the vegetated area along
a stream. Trees stabilize the banks, provide shade
for fish, and create wildlife habitat.

26. Grade Control
Highway
Bridge
Beaver Dam
or log jam
Lowered Pipelines
Creekbed
Loss of grade control can be devastating to a stream. Lowering pipelines is potentially removing grade control from the
stream. Removal of natural grade control such as beaver dams, or manmade structures can cause the streambed to degrade
due to headcutting. Headcutting migrates upstream toward the source of water. As creek bed and banks degrade, trees
become woody debris in the stream and the riparian corridor is damaged. Many riparian corridors are narrow due to land
development. The loss of trees on the streambank means loss of habitat and an important part of streambank stability.
Grade control plays an important role in stabilizing stream bed and banks, and preventing erosion.
Bed degradation will cause deepening and widening of
a stream. An indicator of this is mature trees leaning
into the stream or trees and woody debris in the stream.
Loss of stable vegetation on streambanks will accelerate
the erosion process.

27. Notice how the mats articulate down with the deepening
streambed. This migrating headcut erosion has now been
arrested by the hard armor mattress. In comparison, riprap would
continually launch downstream and require future maintenance.

28. 6” Manitowoc Pipeline
Creek Crossing @ Milepost 1.1
Manitowoc, Wisconsin
flow
flow
Several attempts to
stabilize with Rip Rap
Difficult access made easy
Designed Energy
Dissipation Pool
1 on 1 Bank Slope
SUB
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AR
11 Months Later
Revegetation through open area of mats
2.5 Years Later
ANR Pipeline
Company

29. West Little Sugar Creek
Edgar Co., Elbridge, IL
SUB M
AR
Before Installation
During Installation
After Installation
3 Months After InstallationLooking Upstream
Looking Downstream

30. Riprap is stable on banks but the rock
in the creekbed washed downstream
West Little Sugar Creek
Edgar Co., Elbridge, IL
SUB M
AR
Rock accumulates downstream of exposed pipeline
and causes bank erosion by diverting flow