HomeMy WebLinkAboutC106 STORMWATER POLLUTION PREVENTION PLAN DETAILSEROSION CONTROL BLANKET
STAPLE PATTERN
1.PREPARE SOIL BEFORE INSTALLING ROLLED EROSION CONTROL PRODUCTS (RECP's), INCLUDING
ANY NECESSARY APPLICATION OF LIME, FERTILIZER, AND SEED. NOTE: WHEN USING CELL-O-SEED
DO NOT SEED PREPARED AREA. CELL-O-SEED MUST BE INSTALLED WITH PAPER SIDE DOWN.
2.BEGIN AT THE TOP OF THE SLOPE BY ANCHORING THE RECP'S IN A 6" (15 CM) DEEP X 6" (15 CM)
WIDE TRENCH WITH APPROXIMATELY 12" (30 CM) OF RECP'S EXTENDED BEYOND THE UP-SLOPE
PORTION OF THE TRENCH. ANCHOR THE RECP'S WITH A ROW OF STAPLES/STAKES
APPROXIMATELY 12" (30 CM) APART IN THE BOTTOM OF THE TRENCH. BACKFILL AND COMPACT
THE TRENCH AFTER STAPLING. APPLY SEED TO COMPACTED SOIL AND FOLD REMAINING 12" (30
CM) PORTION OF RECP'S BACK OVER SEED AND COMPACTED SOIL. SECURE RECP'S COVER
COMPACTED SOIL WITH A ROW OF STAPLES/STAKES SPACED APPROXIMATELY 12" (30 CM) APART
ACROSS THE WIDTH OF THE RECP'S.
3.ROLL THE RECP'S (A.) DOWN OR (B.) HORIZONTALLY ACROSS THE SLOPE. RECP'S WILL UNROLL
WITH APPROPRIATE SIDE AGAINST THE SOIL SURFACE. ALL RECP's MUST BE SECURELY FASTENED
TO SOIL SURFACE BY PLACING STAPLES/STAKES IN APPROPRIATE LOCATIONS AS SHOWN IN THE
STAPLE PATTERN GUIDE. WHEN USING THE DOT SYSTEM , STAPLES/STAKES SHOULD BE PLACED
THOUGH EACH OF THE COLORED DOTS CORRESPONDING TO THE APPROPRIATE STAPLE
PATTERN.
4.THE EDGES OF PARALLEL RECP's MUST BE STAPLED WITH APPROXIMATELY 2" - 5" (5 CM - 12.5 CM)
OVERLAP DEPENDING ON RECP's TYPE.
5.CONSECUTIVE RECP'S SPLICED DOWN THE SLOPE MUST BE PLACED END OVER END (SHINGLE
STYLE) WITH AN APPROXIMATE 3" (7.5 CM) OVERLAP. STAPLE THROUGH OVERLAPPED AREA,
APPROXIMATELY 12" (30 CM) APART ACROSS ENTIRE RECP's WIDTH. NOTE: IN LOOSE SOIL
CONDITIONS, THE USE OF STAPLE R STAKE LENGTHS GREATER THAN 6" (15 CM) MAY BE
NECESSAY TO PROPERLY SECURE THE RECP's.
2"-5" (5 CM-12.5CM)
12" (30 CM)6" (15 CM)6" (15 CM)
SLOPE INSTALLATION
OUTLET EROSION CONTROL PROTECTION
DRAIN PIPE WITH
FLAIRED END
SECTION
DEPTH OF RIP-RAP AS
INDICATED ON PLAN 12"
MINIMUM AW= FEETGEOTEXTILE FABRIC
OR WELL GRADED
AGGREGATE
AT= FEET
AL= APRON LENGTH
AT= APRON THICKNESS
AW= APRON WIDTH
STONE PLACED AROUND
END OF DRAIN PIPE TO
PREVENT SLOPE EROSION
AND UNDERCUTTING OF
THE PIPE
ENERGY DISSIPATER (OUTLET PROTECTION)
1.DIVERT SURFACE WATER RUNOFF AROUND THE STRUCTURE DURING
CONSTRUCTION SO THAT THE SITE CAN BE PROPERLY DEWATERED FOR
FOUNDATION PREPARATION.
2.EXCAVATE FOUNDATION AND APRON AREA SUBGRADES BELOW DESIGN ELEVATION
TO ALLOW FOR THICKNESS OF THE FILTER MEDIUM AND RIPRAP.
3.COMPACT ANY FILL USED IN SUBGRADE PREPARATION TO THE DENSITY OF
SURROUNDING UNDISTURBED SOIL MATERIAL.
4.SMOOTH SUBGRADE ENOUGH TO PROTECT GEOTEXTILE FABRIC FROM TEARING.
5.PLACE GEOTEXTILE FABRIC OR AGGREGATE BEDDING MATERIAL (FOR STABILIZATION
AND FILTRATION) ON THE COMPACTED AND SMOOTHED FOUNDATION.
6.INSTALL RIPRAP TO THE LINES AND ELEVATIONS SHOWN IN THE CONSTRUCTION
PLANS. BLEND RIPRAP SMOOTHLY TO SURROUNDING GRADE. IF THE CHANNEL IS
WELL DEFINED, EXTEND THE APRON ACROSS THE CHANNEL BOTTOM AND UP THE
CHANNEL BANKS TO AN ELEVATION OF SIX INCHES ABOVE THE MAXIMUM TAILWATER
DEPTH OR TO THE TOP OF THE BANK, WHICHEVER IS LESS.
7.IF GEOTEXTILE FABRIC TEARS WHEN PLACING RIPRAP, REPAIR IMMEDIATELY BY
LAYING AND STAPLING A PIECE OF FABRIC OVER DAMAGED AREA, OVERLAPPING THE
UNDAMAGED AREAS BY AT LEAST 12 INCHES.
8.CONSTRUCT A SMALL PLUNGE POOL WITHIN THE OUTLET APRON. (RIPRAP APRONS
MUST BE LEVEL WITH OR SLIGHTLY LOWER THAN THE RECEIVING CHANNEL AND
SHOULD NOT PRODUCE AN OVERFALL OR RESTRICT FLOW OF THE WATER
CONVEYANCE STRUCTURE.)
MAINTENANCE
_ INSPECT WITHIN 24 HOURS OF A RAIN EVENT AND AT LEAST ONCE EVERY SEVEN
CALENDAR DAYS.
_ INSPECT FOR STONE DISPLACEMENT; REPLACE STONES ENSURING PLACEMENT AT
FINISHED GRADE.
_ CHECK FOR EROSION OR SCOURING AROUND SIDES OF THE APRON; REPAIR
IMMEDIATELY.
_ CHECK FOR PIPING OR UNDERCUTTING; REPAIR IMMEDIATELY.
REFERENCE IN CHAPTER 7 PAGE 121 IN THE INDIANA STORM WATER QUALITY MANUAL
AT=1.5' X D50 15" OR
LESS, 1.2' X D50 15"
OR LARGER STONE.
PIPE SIZE
(D50)
C106STORMWATER POLLUTION PREVENTION PLAN DETAILSW190582-C103 swppp det(NO SCALE)
AVERAGE RIPRAP DIAMETER APRON WIDTH APRON LENGTH
8 IN.
12 IN.
18 IN.
24 IN.
30 IN.
36 IN.14 IN.
12 IN.
10 IN.
8 IN.
5 IN.
3 IN.2 TO 3 FEET
3 TO 4 FEET
4 TO 6 FEET
6 TO 8 FEET
8 TO 10 FEET
10 TO 12 FEET 16 TO 32 FEET
14 TO 28 FEET
12 TO 22 FEET
8 TO 18 FEET
6 TO 12 FEET
5 TO 7 FEET
SIDE
AL= FEET
DITCH BED
PLAN
AL= FEET
RIP-RAP
DIA.DIA.DIA.(NO SCALE)
EROSION CONTROL Products
Guaranteed SOLUTIONS
14649 HIGHWAY 41 NORTH
EVANSVILLE, IN 47725
800-720-2040
www.nagreen.com
(NO SCALE)
GENERAL STAPLE RECOMMENDATIONS
STAPLE PATTERNS APPLY TO ALL NORTH AMERICAN GREEN EROSION CONTROL BLANKETS.
STAPLE PATTERNS MAY VARY DEPENDING UPON SOIL TYPE AND AVERAGE ANNUAL RAINFALL.
AT SLOPE LENGTHS GREATER THAN 300 FEET OR WHERE DRAINAGE OVER LARGE AREAS
IS DIRECTED ONTO THE BLANKETS, STAPLE PATTERN "C" SHOULD BE UTILIZED.
CHANNEL LININGS REQUIRED A 2.0' MINIMUM OVERLAP AT LONGITUDINAL JOINTS.
SIDESLOPES SHALL REQUIRE A 6" MINIMUM OVERLAP. WHERE OVERLAPS OCCUR,
THE UPSTREAM BLANKET SHALL OVERLAP THE DOWNSTREAM.
IF OTHER THAN NORTH AMERICAN GREEN EROSION CONTROL BLANKETS ARE INSTALLED
FOLLOW THE INSTALLATION DIRECTIONS RECOMMENDED BY THAT PRODUCTS COMPANY.
CHANNEL LININGS UTILIZE STAPLE PATTERN
"C" WITH ADDITIONAL STAPLES ON SIDE SLOPES.
1 1/2 STAPLE PER SQ. YD.
2 STAPLE PER SQ. YD.
ADDITIONAL STAPLES
AS REQUIRED
SLOPE GRADIENT
CHANNEL
LININGSLOPE LENGTH IN FEET300
275
250
225
200
175
150
125
100
75
50
25 1 STAPLE PER SQ. YD.
TABLE 1. SIZING FOR FLOW DISSIPATERS AT CULVERT PIPE OUTLETS REVISIONS AND ISSUESPart of Section 36, Township 18 North, Range 3 East, Hamilton County, IndianaW19.0582PREPARED FOR:147 & 155 WEST CARMEL DRIVE, CARMEL, INDIANAPROJECT NO.
SHEET NO.CHECKED BY:DRAWN BY:JSDESIGNED BY:DWG NAME:PROJECT NO.:W19.0582DATEBY08.17.2020SSRDATE:RLWKnow what's below.
before you dig.Call
R
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