HomeMy WebLinkAboutWPO201700046 Plan - VSMP WPO VSMP 2017-06-15cel
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WIDTH OF CROSS SECTION
RIES (SEE TYPICAL SECTIONS)
LIMITS OF RIFFLE
BED MATERIAL
B
0
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RIFFLE GRADE CONTROL MATERIAL
(GRADED MIX AS SPECIFIED IN THE
TABLE BELOW)
RGC
(Material Mix (in)
D16
D30
D50
D84
D95
0.75
1.41
4.71
6.32
6.8300
PLAN VIEW
GLIDE LENGTH AND SLOPE VARY. SEE
PROFILE AND CROSS SECTION SHEETS
CONSTRUCTED RIFFLE
NOT TO SCALE
GLIDE LENGTH & SLOPE
VARY (SEE PROFILE)
B'
LENGTH
VARIES
TOP OF BANK
STONE PLACEMENT
EXTENTS
COIR FIBER MATTING KEYED IN
MIN 6" INTO GROUND.
TUBLEINGS/PLUGS TO BE
PLANTED (SEE PLANTING PLAN)
ANCHOR STAKE
(SEE MATTING DETAIL)
COIR FIBER MATTING
MIN.2-4" TOPSOIL
COIR FIBER MATTING TO
BE KEYED IN MIN. 1' INTO STREAM BED.
BAND TREATMENT DETAIL
RGC MATERIAL TO
EXTEND A MIN. 6" FROM -
BOTTOM OF BANK.
-rL] n e 1 n rr- r'
-F GLIDE RIFFLE RUN
FLOW 1'-1.5'
RIFFLE LENGTH AND SLOPE VARY. SEE
PROFILE AND CIROSS SECTION SHEETS
PERMANENT SEEDING MIXTURE:
THE FOLLOWING PERMANENT SEED MIX SHOULD BE PLANTED ON ALL DISTURBED AREAS
IMMEDIATELY AFTER FINAL GRADING AT A RATE OF 25 LBS/ACRE:
CROSS SECTION A -A'
ERNST MIX #862 - VA SOUTHERN PIEDMONT RIPARIAN MIX
20% INDIANGRASS, PA ECOTYPE (SORGHASTRUM NUTANS, PA ECOTYPE)
20% BEAKED PANICGRASS, SC ECOTYPE (PANICUM ANCEPS, SC ECOTYPE)
20% RIVER OATS, 'SUTHER'-PIEDMONT NC ECOTYPE (CHASMANTHIUM LATIFOLIUM (UNIOLA LATIFOLIA),
'SLITHER' -PIEDMONT NC ECOTYPE)
15% VIRGINIA WILDRYE, 'SUTINER'-NC ECOTYPE (ELYMUS VIRGIN ICUS, 'SUTHER'-NC ECOTYPE)
15% REDTOP PANICGRASS, COASTAL PLAIN NC ECOTYPE (PANICUM RIGIDULUM (P. STIPITATUM),
COASTAL PLAIN NC ECOTYPE=)
4% PARTRIDGE PEA, PA ECOTYPE (CHAMAECRISTA FASCICULATA (CASSIA F.), PA ECOTYPE)
2% CRIMSONEYED ROSEMALLOW, VA ECOTYPE (HIBISCUS MOSCHEUTOS, VA ECOTYPE)
2% NEW YORK IRONWEED, P� ECOTYPE (VERNONIA NOVEBORACENSIS, PA ECOTYPE)
2% AUTUMN BENTGRASS, PA ECOTYPE (AGROSTIS PERENNANS, PA ECOTYPE)
COIR FIBER MATTING
TIE -OUT AT 2:1
SLOPE
\FLOODPLAIN BENCH
WHERE FEASIBLE
\N
'
CROSS SECTION B-B
RUN LENGTH AND SLOPE VARY, SEE PROFILE
AND CROSS SECTION SHEETS.
LOGS SHALL BE EMBEDDED WITH
ON-SITE ALLUVIUM AND SOIL.
DESIGN PARAMETER SUMMARY
OUTFALL REACH
BANKFULL WIDTH
4.0'
BOTTOM WIDTH
2.0'
MAX DEPTH
0.40'
BANK WIDTH
1.0'
:T\ 1 10111
CL
MAX
DEPTH
CL
BOTTOM WIDTH
THALWEG IS
EQUIVALENT TO
CENTERLINE
ALIGNMENT
IE G
TYPICAL SECTION
RIFFLE
1:3-\:I: Lyth 11111
TIE OUT AT
2:1 SLOPE
EXISTING
FLOODPLAIN
TERRACE
COIR FIBER MATTING
FILTE
FOOTERI
HEADER B
COIR FIBER MATTING
PLAN VIEW
CHANNEL WIDTH
(SEE TYPICAL SECTION)
NOT TO SCALE
HEADER BOULDERSTEP LENGTH
\ It—(SEE PROFILE)
PROPOS
GROUND
(SECTION A -A')
CHANNEL WIDTH
(SEE TYPICAL SECTION)
(SECTION B -B')
SILL BOULDER (TO BE KEYED
NTO BANK MINIMUM 2 FT)
.DER BOULDER
—OTER BOULDER.
BOULDER SIZING
SPECIFICATIONS
B - AXIS (MEDIAN DIAMETER)
18"' - 24"' (VDOT CLASS 2)
1. ALL STONES ARE TO BE STRUCTURE STONE.
2. GAPS BETWEEN BOULDERS SHALL BE
MINIMIZED BY FITTING BOULDERS
TOGETHER, PLUGGING WITH STRUCTURE
STONE CLASS A AND SELECT MATERIAL OR
CHINKING STONE APPROVED BY DESIGN
ENGINEER, AND LINING WITH FILTER FABRIC.
3. DIMENSIONS AND SLOPES MAY BE
ADJUSTED TO FIT BY THE DESIGN
ENGINEER.
4. CONTRACTOR WILL BE REQUIRED TO FIT
BOULDERS TIGHTLY.
5. FOOTER BOULDERS AND VANE BOULDERS
SHALL BE NATIVE STONE OR SHOT ROCK,
CUBICAL OR RECTANGULAR IN NATURE.
6. SLOPE OF VANE FROM CENTERLINE TO THE
TOP OF THE VANE ARM SHALL BE 2-5%.
7. VANE ARM LENGTHS SHALL VARY
DEPENDING ON POOL LENGTH, RADIUS
CURVATURE AND CHANNEL INVERT
ELEVATION.
8. THE ELEVATION OF EACH GRADE CONTROL
STRUCTURE SHOULD BE EQUAL TO OR
GREATER THAN THE ELEVATION OF THE TOP
OF THE FOOTER ROCKS DIRECTLY
UPSTREAM.
9. FILTER FABRIC SHALL BE PLACED ON THE
UPSTREAM SIDE OF THE STRUCTURE TO
PREVENT WASHOUT OF SEDIMENT
THROUGH BOULDER GAPS. FILTER FABRIC
SHALL EXTEND FROM THE BOTTOM OF THE
FOOTER BOULDER TO THE FINISHED GRADE
ELEVATION AND SHALL BE PLACED THE
ENTIRE LENGTH OF THE STRUCTURE.
DESIGN PARAMETER SUMMARY
OUTFALL REACH
BANKFULL WIDTH
5.0'
BOTTOM WIDTH
2.0'
MAX DEPTH
1.0'
BANK WIDTH
1.5'
BANKFULL WIDTH
CLASS D - NONWOVEN GEOTEXTILE FABRIC
SPECIFICATIONS
APPARENT
GRAB TENSILE
PUNCTURE
WEIGHT -TYPICAL
OPENING SIZE
STRENGTH MIN
STRENGTH
MAX. (MM)
(LBS)
(LBS)
8 OZ/SY (ASTM
0.212 (ASTM
120 (ASTM
65 (ASTM
D-5261)
D-4751)
D-4632)
D-4833)
/— THALWEG IS
EXISTING
FLOODPLAIN
SIDE SLOPES
1
a
209 2nd St. SW Suite 2A
Charlottesville, VA 22902
540.239.1428
ecosystemservices. us
1CtCI SEC
LIlse No. 04020527113
W
T
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c
PROJECT MANAGER: CKA
DESIGNED: CAT
DRAWN: CAT/CKA
PROJECT #: 17-0021
DATE: 6/13/17
SIIEE,T: