SW5220301_Plansheet C-06 - Misc. Detail_20220907

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L
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BARREL PIPE OR "ARM" ORIFICE INSIDE
NOT INCLUDED WITH SKIMMER NOTE: INLET SCREEN
SUPPLIED BY USER SCH 40 PIPE VARIES ON LARGER SKIMMERS
SEE CALCULATIONS FOR SKIMMER SIZE
SKIMMERS TO BE FAIRCLOTH SKIMMERS OR APPROVED EQUAL.
SKIMMER DETAIL
PIPE OUTLET TO FLAT,
NON -DEFINED CHANNEL
NTS
NOTES
1. La IS THE LENGTH OF RIPRAP
APRON
2. d=1.5 TIMES THE MAXIMUM
STONE DIAMETER BUT NOT LESS
THAN 6
3. IN A WELL-DEFINED CHANNEL
EXTEND THE APRON UP ON THE
CHANNEL BANKS TO AN
ELEVATION OF 6" ABOVE THE
MAXIMUM TALLWATER DEPTH OR
TO TOP PF THE BANK,
WHICHEVER IS LESS.
La 4. A FILTER BLANKET OR FILTER
FABRIC SHOULD BE INSTALLED
BETWEEN THE RIP -RAP AND
PIPE OUTLET TO
WELL-DEFINED CHANNEL
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N.T.S.
OUTLET
do
La
W
d50
dMAX
d
12" DIP
3'
8'
6.5'
0. 2'
0. 4'
0. 5'
15" RCP
3.75'
8'
7'
0. 2'
0. 4'
0. 5'
6" PVC
1.5'
3'
1. 7'
0. 2'
0. 4'
0. 5'
METAL FENCE POSTS
1.25 LB/LF MIN
REINFORCING WIRE FENCE
MINIMUM 14 GAUGE WIRE
MAX. MESH SPACING OF 6"
SILT FENCE FABRIC-----_
ATSM 6461 OR EQUIV.
WIRE OR ZIP TIES
MIN. STRENGTH OF
2. 7 50 PSI
q FL 0
BACKFILL TRENCH
AND COMPACT
THROUGHLY
18"-24" 1
I 5'
4» I24" MIN
i
CROSS SECTION
8' MAX W WIRE FENCE
6' MAX W/O WIRE FENCE
WIRE FENCE
FABRIC FENCE
COMPACTED
SOIL
EXISTING
GRADE
2' MIN.
1 3�
s%
"A" F`S
"B"
CONSTRUCTION SPECIFICATIONS
REMOVE AND PROPERLY DISPOSE OF ALL TREES, BRUSH, STUMPS, AND OTHER
OBJECTIONAL MATERIAL.
ENSURE THAT THE MINIMUM CONSTRUCTED CROSS SECTION MEETS ALL DESIGN
REQUIREMENTS.
ENSURE THAT THE TOP OF THE DIKE IS NOT LOWER AT ANY POINT THAN THE
DESIGN ELEVATION PLUS THE SPECIFIED SETTLEMENT.
PROVIDE SUFFICIENT ROOM AROUND DIVERSIONS TO PERMIT MACHINE
REGRADING AND CLEANOUT.
VEGETATE THE RIDGE IMMEDIATELY AFTER CONSTRUCTION. ENSURE DIVERSION
IS STABILIZED WITHIN 7 DAYS OF CONSTRUCTION.
MAINTENANCE
INSPECT TEMPORARY DIVERSION ONCE A WEEK AND AFTER EVERY RAINFALL.
IMMEDIATELY REMOVE SEDIMENT FROM THE FLOW AREA AND REPAIR THE
DIVERSION RIDGE. CAREFULLY CHECK OUTLETS AND MAKE TIMELY REPAIRS AS
NEEDED. WHEN THE AREA PROTECTED IS PERMANENTLY STABILIZED, REMOVE THE
RIDGE AND THE CHANNEL TO BLEND WITH THE NATURAL GROUND LEVEL END
APPROPRIATELY STABILIZE IT.
DESCRIPTION
"A" FT DEPTH
"B" FT BOTTOM WIDTH
LINER
PERM. DIVERSION DITCH 1
1.5
2
STRAW MATTING-N.A.G.
SC150 OR
EQ.
PERM. DIVERSION DITCH 2
1.25
2
STRAW MATTING-N.A.G.
SC150 OR
EQ.
ROADSIDE DITCH
1.25
1
STRAW MATTING
- N.A.G.
SC150 OR
EQ.
TEMP DITCH #1
1.5
2
STRAW MATTING-N.A.G.
SC150 OR
EQ.
TEMP DITCH 2
#
1.25
2
-
STRAW MATTING N.A.G.
SC150 OR
EQ.
TEMP DITCH #3
1.25
2
STRAW MATTING-N.A.G.
SC150 OR
EQ.
KEY IN 8" DOWN
AND 4" FORWARD
WIRE OR
ZIP TIES EXISTING
GRADE
MAINTENANCE REQUIREMENTS:
- INSPECT SEDIMENT FENCES AT LEAST ONCE A WEEK AND AFTER EACH RAINFALL. MAKE ANY
REQUIRED REPAIRS IMMEDIATELY.
- SHOULD THE FABRIC OF A SEDIMENT FENCE COLLAPSE, TEAR, DECOMPOSE, OR BECOME
INEFFECTIVE, REPLACE IT PROMPTLY.
- REMOVE SEDIMENT DEPOSITS AS NECESSARY TO PROVIDE ADEQUATE STORAGE VOLUME FOR THE
NEXT RAIN AND TO REDUCE PRESSURE ON THE FENCE. TAKE CARE TO AVOID UNDERMINING THE
FENCE DURING CLEANOUT.
- REMOVE ALL FENCING MATERIAL AND UNSTABLE SEDIMENT DEPOSITS AND BRING THE AREA TO
GRADE AND STABILIZE IT AFTER THE CONTRIBUTING DRAINAGE AREA HAS BEEN PROPERLY
STABILIZED.
TEMPORARY SILT FENCE
NTS
WIRE OR ZIP TIES
METAL FENCE POSTS MIN. STRENGTH OF
1.25 LB/LF MIN 50 PSI
REINFORCING WIRE FENCE
MINIMUM 14 GAUGE WIRE
SILT -FENCE MAX. MESH SPACING OF 6"
/ WIRE FENCE ' SILT FENCE
■ 1.0 FT. ■
MIN.
FRONT VIEW
VARIES (SEE PLAN)
4' M A X
CLASS B
RIP RAP
SILT
FENCE
METAL FENCE POSTS
1.25 LB/LF MIN
SILT
FENCE
ALL STONE TO J L NCDOT #5 OR
BE PLACED AT #57 WASHED
A 2:1 SLOPE WIRE OR ZIP TIES STONE
MIN. STRENGTH OF
50 PSI
TOP VIEW
MAINTENANCE REQUIREMENTS:
INSPECT SEDIMENT FENCES AT LEAST ONCE A WEEK AND AFTER EACH RAINFALL.
MAKE ANY REQUIRED REPAIRS IMMEDIATELY.
- SHOULD THE FABRIC OF A SEDIMENT FENCE COLLAPSE, TEAR, DECOMPOSE, OR
BECOME INEFFECTIVE, REPLACE IT PROMPTLY.
- REMOVE SEDIMENT DEPOSITS AS NECESSARY TO PROVIDE ADEQUATE STORAGE
VOLUME FOR THE NEXT RAIN AND TO REDUCE PRESSURE ON THE FENCE. TAKE
CARE TO AVOID UNDERMINING THE FENCE DURING CLEANOUT.
- REMOVE ALL FENCING MATERIAL AND UNSTABLE SEDIMENT DEPOSITS AND BRING THE
AREA TO GRADE AND STABILIZE IT AFTER THE CONTRIBUTING DRAINAGE AREA HAS
BEEN PROPERLY STABILIZED.
NOTE:
- REFER TO SILT FENCE DETAIL FOR MORE INFORMATION.
SILT FENCE STONE OUTLET
N.T.S.
DIVERSION DITCH DETAIL
NTS
I� 50' MIN -
50' MIN
EXISTING
GROUND
11=11=11=11=11=11=�I=�I► � � � � � � � � � �
R=30'
PLAN VIEW
CONSTRUCTION SPECIFICATIONS
1. STONE - USE COARSE AGGREGATE (2-3 INCH STONE)
2. LENGTH - 50' MIN
3. THICKNESS - NOT LESS THAN SIX(6) INCHES
4. WIDTH - NOT LESS THAN FULL WIDTH OF ALL POINTS OF INGRESS OR EGRESS
5. WASHING - WHEN NECESSARY, WHEELS SHALL BE CLEANED TO REMOVE SEDIMENT
PRIOR TO ENTRANCE ONTO PUBLIC RIGHT-OF-WAY. WHEN WASHING IS REQUIRED,
IT SHALL BE DONE ON AN AREA STABILIZED WITH CRUSHED STONE WHICH DRAINS
INTO AN APPROVED SEDIMENT TRAP OR SEDIMENT BASIN. ALL SEDIMENT SHALL BE
PREVENTED FROM ENTERING ANY STORM DRAIN, DITCH, OR WATERCOURSE. THROUGH
USE OF SAND BAGS, GRAVEL, BOARDS OR OTHER APPROVED METHODS.
6. MAINTENANCE - THE ENTRANCE SHALL BE MAINTAINED IN A CONDITION WHICH WILL
PREVENT TRACKING OR FLOWING OF SEDIMENT ONTO PUBLIC RIGHT-OF-WAY. THIS
MAY REQUIRE PERIODIC TOP DRESSING WITH ADDITIONAL STONE AS CONDITIONS DEMAND
AND REPAIR Al CLEANOUT OF ANY MEASURES USED TO TRAP SEDIMENT. ALL
SEDIMENT SPILLED, DROPPED, WASHED, OR TRACKED ONTO PUBLIC RIGHT-OF-WAY
MUST BE REMOVED IMMEDIATELY.
TEMPORARY CONSTRUCTION ENTRANCE
NTS
PLAN VIEW
STEEL POST 0
STAKE TO 4' O.C. TYP.--7SUPPORT ROPE OR WIRE TO
SUPPORT WIRE, TYP. PREVENT SAGGING N. T. S.
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►.
STEEL POST MIN. 24" IN _� COIR MESH OR SIMILAR,
GROUND BELOW BOTTOM STAPLED OR TRENCHED
OF SED. TRAP SECTION X INTO BOTTOM OR SIDE, TYP.
BAFFLES MADE OF 700 G/M COIR EROSION BLANKET SIMILAR TO AND
INSTALLED AS SEDIMENT FENCE. TYP OF 3 EA. BASIN, (2 IF BASIN IS 20'
OR LESS IN LENGTH.)
SKIMMER WITH
>�>�L RETRIEVAL ROPE
CROSS SECTION
TEMPORARY SKIMMER BASIN
N.T.S.
GENERAL NOTES/MAINTENANCE REQUIREMENTS
1. AREA UNDER EMBANKMENT TO BE CLEANED, GRUBBED AND STRIPPED OF ANY VEGETATION AND ROOT MAT.
2. FILL MATERIAL FOR THE EMBANKMENT SHALL BE FREE OF ROOTS OR OTHER WOOD/VEGETATION AS WELL AS OVER -SIZED
STONES, ROCKS, ORGANIC MATERIAL OR OTHER OBJECTIONABLE MATERIAL. THE EMBANKMENT SHALL BE COMPACTED IN NOT
GREATER THAN 9" LIFTS BY TRAVERSING WITH EQUIPMENT.
3. SEDIMENT SHALL BE REMOVED AND TRAP RESTORED TO IT ORIGINAL DIMENSIONS WHEN THE SEDIMENT HAS ACCUMULATED
TO 1/2 THE DESIGN DEPTH OF THE BASIN. THIS DEPTH SHALL BE MARKED IN THE FIELD.
4. REMOVED SEDIMENT SHALL BE PLACED IN A DESIGNATED DISPOSAL AREA AND PROTECTED AGAINST EROSION.
5. THE WEIR MUST BE CONSTRUCTED LEVEL AND TO GRADE TO ASSURE DESIGN
6. STONES SHALL BE MACHINE PLACED AND SHOULD BE HARD, ANGULAR AND WEATHER RESISTANT.
7. EMERGENCY SPILLWAY SHALL BE DIRECTED TO NATURAL, STABLE AREAS.
8. ALL CUT AND FILL SLOPES SHALL BE 3:1 OR FLATTER.
9. ALL DISTURBED AREAS SHALL BE STABILIZED IMMEDIATELY UPON COMPLETION OF CONSTRUCTION OF THE BASIN.
WITH LINER, NO GRAVEL APPROACH
ONSITE CONCRETE WASHOUT
STRUCTURE WITH LINER
10'-0" MIN.
.A
SANDBAGS (TYP.)
OR STAPLES
10 MIL
1:1 PLASTIC SANDBAGS (TYP.)
SIDE SLOPE LINING OR STAPLES
o (TYP.)
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CLEARLY MARKED SIGNAGE SECTION A -A
CONCRETE NOTING DEVICE (18"X24" MIN.)
WASHOUT NOTES:
1. ACTUAL LOCATION DETERMINED IN FIELD
2. THE CONCRETE WASHOUT STRUCTURES SHALL BE
MAINTAINED WHEN THE LIQUID AND/OR SOLID REACHES
75% OF THE STRUCTURES CAPACITY.
PLAN 3.CONCRETE WASHOUT STRUCTURE NEEDS TO BE
CLEARY MARKED WITH SIGNAGE NOTING DEVICE.
BELOW GRADE WASHOUT STRUCTURE
NOT TO SCALE
CONCRETE WASHOUT DETAIL
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1. PREPARE SOIL
BEFORE
INSTALLING BLANKETS, INCLUDING APPLICATION OF LIME, FERTILIZER, AND SEED.
2. BEGIN AT THE
TOP OF
THE CHANNEL BY ANCHORING THE BLANKET IN A 6" DEEP X 6" WIDE TRENCH. BACKFILL AND COMPACT THE TRENCH AFTER
STAPLING.
3. ROLL CENTER
BLANKET
IN DIRECTION OF WATER FLOW ON BOTTOM OF CHANNEL.
4. PLACE BLANKETS END
OVER END (SHINGLE STYLE) WITH A 6" OVERLAP. USE A DOUBLE ROW OF STAGGERED STAPLES 4" APART TO SECURE
BLANKETS.
5. FULL LENGTH
EDGE OF
BLANKETS AT TOP OF SIDE SLOPES MUST BE ANCHORED IN 6" DEEP X 6" WIDE TRENCH. BACKFILL AND COMPACT THE TRENCH
AFTER STAPLING.
6. BLANKETS ON
SIDE SLOPES MUST BE OVERLAPPED 4 OVER THE CENTER BLANKET AND STAPLED 2" FOR C350 MATTING .
7. IN HIGH FLOW
CHANNEL APPLICATIONS, A STAPLE CHECK SLOT IS RECOMMENDED AT 30 TO 40 FOOT INTERVALS. USE A ROW OF STAPLES 4 APART
OVER ENTIRE
WIDTH OF
THE CHANNEL. PLACE A SECOND ROW 4" BELOW THE FIRST ROW IN A STAGGERED PATTERN.
8. THE TERMINAL
END OF
THE BLANKETS MUST BE ANCHORED IN A 6" DEEP X 6" WIDE TRENCH. BACKFILL AND COMPACT THE TRENCH AFTER STAPLING.
DITCH LINING/MATTING
INSTALLATION GUIDE
TEMPORARY SEEDING SPECIFICATIONS
PIEDMONT REGION
Application Rates (lb/ac)
Recommended
Species
10-10-10
Agriculural
Straw
Seeding Dates
Seed
Fertilizer
Limestone
Jan. 1 - May 1
Winter Wheat
Annual Lespedeza
120
50
750
2,000
4,000
(Kobe)
May 1 - Aug 15
German Millet
40
750
2,000
4,000
Aug 15 - Dec 30
Ryegrain
120
1,000
2,000
4,000
NOTES
USE NO. 5 OR NO. 57 STONE FOR SEDIMENT
CONTROL STONE.
PROVIDE STABILIZED OUTLET TO STREAM BANK.
WOOD PALLETS MAY BE USED IN LIEU OF STONE
AND GEOTEXTILE AS DIRECTED. A SUFFICIENT NUMBER
OF PALLETS MUST BE PROVIDED TO ELEVATE THE ENTIRE
SPECIAL STILLING BASIN ABOVE NATURAL GROUND.
NOT TO SCALE
SPECIAL STILLING BASIN DETAIL
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PERMANENT SEEDING
DEFINI TION
Seeding disturbed areas with perennial grasses and (or) legumes
to provide a
permanent vegetative cover to lessen runoff and soil erosion.
PURPOSE
To lessen soil erosion and permanently stabilize disturbed areas created by
grading of construction sites.
CONDITIONS WHERE PRACTICE APPLIES
All bare soil areas on construction sites which are not covered by structures
or other erosion control devices.
PREPARA TION
Prepare seedbed by ripping, chiseling, harrowing or plowing to
depth of six
inches so as to produce a loose, friable surface. Remove all
stones,
boulders, stumps or debris from the surface which would prohibit germination
or plant growth. Spread topsoil in a layer 3" - 6" depth.
Incorporate into the soil 800 to 1,000 pounds of 10-10-10 fertilizer plus 500
pounds of twenty percent (209) superphosphate per acre and
two tons of
dolomitic lime per acre unless soil tests indicate that a lower
rate of lime
can be used.
Mulch after seeding with 1.5 tons of grain straw per acre and
either crimp
straw into soil or tack with liquid asphalt at 400 gallons per acre or
emulsified asphalt at 300 gallons per acre.
PLANTS & MIXTURE PLAN TING RA TE/A CRE
PLAN TING DATES
Tall Fescue 100-150 lbs.
Aug. 15 -
Oct. 15
(Low Main ten an ce)
Feb. 15 -
May 1
Tall fescue 200-250 lbs.
Aug. 15 -
Oct. 15
Waterways and
Feb. 15 -
May 1
Lawns (High Main t.)
Blend of two turf- 200-250 lbs.
Aug. 15 -
Oct. 15
type tall Fescues
Feb. 15 -
May 1
(9O) an d t wo or
more improved
Ken tucky bluegrass
varieties (10q)
(high maintenance)
Tall Fescue 100 lbs.
Feb. 15
- May 1
and and
Aug. 15
- Oct. 15
Kobe or Korean 20-25 lbs.
L esp edeza
Tall Fescue 50 lbs./acre
Nov. 1 -
Feb. 1
(Unscarified)
Tall Fescue and 60 lbs.
July and August
German Millet or and
Sudan grass 2 30 lbs.
Tall Fescue 70 lbs.
No v. 1 -Jan.
30
and and
Ryegrain 2 25 lbs.
Common Bermuda grass 8 lbs. (hulled)
April 15 -
June 30
15-20 lbs. (unhulled)
Feb. 1 -
March 30
I For spring seedings, use Scarified Lespedeza seed. For late
fall and
winter seedings, use unscarified seed.
2 Annuals such as Millet, Sudangrass and Rye grain must be kept at 10-12"
maxim um h eigh t.
PERMANENT GROUNDCOVER
Permanent groundcover is to be provided for all disturbed areas within 15 working days
or 30 calender days (whichever is shorter) following completion of construction
or de velopm en t.
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Sheet No.