20200660 Ver 1_AVC19000-SW-C9.2_20200519

NOTES:
1. AN EROSION CONTROL BLANKET SHALL BE USED TO STABILIZE THE NEWLY CONSTRUCTED AND
EXISTING CHANNEL FROM THE TOP OF BANK TO TOE OF SLOPE AND SHALL BE 100%
BIODEGRADABLE.
2. THE CHANNEL SIDE SLOPES SHALL BE FINE GRADED, SEEDED, FERTILIZED, AND LIMED WHERE
APPLICABLE PRIOR TO INSTALLING THE EROSION CONTROL BLANKET. REMOVE ROOTS, TWIGS, AND
OTHER DEBRIS WHICH WOULD CAUSE BULGES IN THE MATTING AS WELL AS PREVENT THE MATTING
FROM BEING LAID FLUSH TO THE FINISHED SURFACE.
3. KEY -IN EDGES OF MATTING A MINIMUM OF 6 INCHES INTO FINISHED GRADE. LAY MATTING
SHINGLED DOWNSTREAM TO UPSTREAM, OVERLAPPING AT EDGES A MINIMUM OF 1 FOOT.
4. INSTALL STAKES TO ENSURE GOOD GROUND CONTACT OF THE MATTING TO WITHSTAND MEDIUM TO
HIGH FLOWS. STAKES SHALL BE 100% BIODEGRADABLE AND INSTALLED PER THE MANUFACTURER'S
SPECIFICATIONS INCLUDING, BUT NOT LIMITED TO, THE MANUFACTURER'S RECOMMENDED DENSITY
AND PATTERN.
5. KEY -IN EDGES OF MATTING A MINIMUM OF 6 INCHES. CHECK MATTING FOR LOOSE ENDS, FLAPS,
OR OTHER WEAKNESSES OR DAMAGE WHICH MAY CAUSE IT TO BECOME LOOSE UNDER FLOW
CONDITIONS.
6. THE EROSION CONTROL BLANKET SHALL CONSIST OF A MACHINE -PRODUCED BLANKET MADE OF
COCONUT FIBER AND BE EQUIVALENT OR BETTER THAN THE FOLLOWING SPECIFICATION. SOIL
STABILIZATION MATTING WHICH USES PLASTICS, METALS, OR OTHER MAN-MADE MATERIALS IN THE
CONSTRUCTION OF THE MATERIAL WILL NOT BE PERMITTED.
WEIGHT = 13.6 OZ/SY
TENSILE STRENGTH DRY (ASTM D 4595) _
TENSILE STRENGTH WET (ASTM D 4595) =
ELONGATION FAILURE WET (ASTM D 4595) =
OPEN AREA = 65%
RECOMMENDED SHEAR STRESS = 3LBS/SQ.FT.
RECOMMENDED FLOW = 8FT/S
RECOMMENDED SLOPE </= 1:1
MINIMUM TWINE COUNT PER FOOT = 15X14
780 LBS/FT MACHINE DIRECTION
744 LBS/FT CROSS DIRECTION
672 LBS/FT MACHINE DIRECTION
648 LBS/FT CROSS DIRECTION
30% MACHINE DIRECTION
28% CROSS DIRECTION
NOTE:
1. A FILTER BLANKET IS TO BE INSTALLED BETWEEN THE RIPRAP AND SOIL
FOUNDATION. THE FILTER BLANKET WILL CONSIST OF A MINIMUM 4" THICK
LAYER OF STONE (NCDOT #57) UNDERLAIN WITH MIRAFI FILTER WEAVE 700
OR ENGINEER -APPROVED EQUIVALENT.
ENDWALL PER -
NCDOT STD.
838.80 OR
WALL DESIGNED
BY OTHERS
36"0 0-RING -
RCP
8'
PLAN
2.5' MIN
BANKFULL STAGE
BLANKET
KEYED 6" MIN
EROSION CONTROL BLANKET
BLANKET KEYED 6" MIN
CROSS-SECTION VIEW
OVERLAP ROLL EDGES
1 FOOT MINIMUM (TYP.)
6 INCH DEEP (MIN.) �+
KEY IN TRENCH + +
PREPARED SLOPE + + + +
WITH SEED IN PLACE + +
(TYP.) }
+ + + + + +
+ + + + +
+ + + + +
SLOPE APPLICATION ISOMETRIC VIEW
EROSION CONTROL BLANKET DETAILS
N.T.S.
MINIMUM DIMENSIONS
NCDOT CLASS I RIPRAP
24'L X 9'W X 22" THICK
TO BE LINED WITH
GEOTEXTILE FABRIC OR
ENGINEER -APPROVED
EQUIVALENT
36" 0 0-RING RCP
ENDWALL PER NCDOT STD.
838.80 OR WALL DESIGNED BY
OTHERS
FILTER BLANKET
DISSIPATION POOL (SEE NOTE)
CLASS B COBBLESTONE
22" THICK
TO BE LINED WITH
GEOTEXTILE FABRIC OR
ENGINEER -APPROVED PROFILE VIEW
EQUIVALENT
OUTLET BARREL VELOCITY DISSIPATER AND DISSIPATION POOL
N.T.S.
FILL MAT VOIDS
IF SPECIFIED
6 IN MIN. OVERLAP
AT ROLL END (TYP.)
DISSIPATION POOL
CLASS B COBBLESTONE
22" THICK
TO BE LINED WITH
GEOTEXTILE FABRIC OR
ENGINEER -APPROVED
EQUIVALENT
NOTES:
1. AREAS NOTED AS LIVE STAKES WITHIN THE PLANTING ZONE SHALL BE PLANTED WITH BLACK WILLOW (SALIX NIGRA).
2. ONE LIVE STAKE SPECIES PER LIVE STAKE AREA. ALTERNATE SPECIES PER LIVE STAKE AREA.
3. ALL LIVE STAKES SHALL BE DORMANT AT TIME OF ACQUISITION AND PLANTING.
4. LIVE STAKES SHALL BE 1/2-2"(12-50 MM) IN DIAMETER. LIVE STAKES SHALL ALSO BE 2 - 4 FEET (0.6 - 1 METER)
IN LENGTH.
5. DURING PREPARATION, THE BASAL ENDS OF THE LIVE STAKES SHALL BE CLEANLY CUT AT AN ANGLE TO FACILITATE EASY
INSERTION INTO THE SOIL, WHILE THE TOPS SHALL BE CUT SQUARE OR BLUNT FOR TAMPING. ALL LIMBS SHALL BE
REMOVED FROM THE SIDES OF THE LIVE CUTTING PRIOR TO INSTALLATION.
6. CUTTINGS FOR LIVE STAKES SHALL BE HARVESTED IN A MANNER SUCH THAT THEY ARE CUT, IMMEDIATELY PUT INTO
WATER TO BE SOAKED FOR TEN DAYS, AND THEN PLANTED IMMEDIATELY AFTER THE TEN DAYS ARE COMPLETED.
CUTTINGS SHALL REMAIN WET UNTIL THEY ARE PLANTED. OUTSIDE STORAGE LOCATIONS SHOULD BE CONTINUALLY SHADED
AND PROTECTED FROM WIND AND DIRECT SUNLIGHT.
7. LIVE STAKES SHALL BE TAMPED AT AN ANGLE INTO THE GROUND SURFACE WITH A DEAD BLOW HAMMER, WITH BUDS
ORIENTED IN AN UPWARD DIRECTION. STAKES SHOULD BE TAMPED UNTIL APPROXIMATELY 3/4 OF THE STAKE LENGTH IS
WITHIN THE GROUND. ANY STAKES THAT ARE SPLIT OR DAMAGED DURING INSTALLATION SHALL BE REMOVED AND
REPLACED.
8. THE AREA AROUND EACH LIVE STAKE SHALL BE COMPACTED BY FOOT AFTER THE LIVE STAKE HAS BEEN INSTALLED.
9. ONE TO TWO INCHES SHALL BE CUT CLEANLY OFF OF THE TOP OF EACH LIVE STAKE (WITH LOPPERS) AT AN ANGLE OF
APPROXIMATELY 15 DEGREES FOLLOWING INSTALLATION.
CHAN
I I\/C CTAVC
LIVE STAKE DETAIL
N.T.S.
'J
McADAMS
The John R. McAdams Company, Inc.
One Glenwood Avenue
Suite 201
Raleigh, NC 27603
phone [phone]
fax [phone]
license number: C-0293, C-187
www.mcadamsco.com
CLIENT
AVENTON COMPANIES
5420 WADE PARK BOULEVARD, SUITE 320
RALEIGH, NORTH CAROLINA, 27607
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REVISIONS
NO. DATE
1 01. 17. 2020 REVISED PER CITY OF RALEIGH COMMENTS
2 03. 05. 2020 REVISED PER CITY OF RALEIGH COMMENTS
3 05. 05. 2020 REVISED PER CITY OF RALEIGH COMMENTS
PLAN INFORMATION
PROJECT NO. AVC-19000
FILENAME
AVC19000-SW
CHECKED BY
RAS
DRAWN BY
HD
SCALE
AS NOTED
DATE
11. 25. 2019
SHEET
STORMWATER
WETLAND DETAILS
C-902
PRELIMINARY DRAWING - NOT RELEASED FOR CONSTRUCTION