HomeMy WebLinkAboutC104 SWPPP 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
SPECIFICATIONS
SITE PREPARATION
_ GRADE THE SITE TO ACHIEVE POSITIVE DRAINAGE.
_ PREPARE A SMOOTH, FIRM SOIL SURFACE AND APPLY SOIL AMENDMENTS. IRRIGATION IRRIGATE AS NEEDED
TO ENSURE ROOTING OF SOD.
MATERIALS
_ SOIL AMENDMENTS - SELECT MATERIALS AND RATES AS DETERMINED BY A SOIL TEST (CONTACT YOUR
COUNTY SOIL AND WATER CONSERVATION DISTRICT OR COOPERATIVE EXTENSION OFFICE FOR ASSISTANCE
AND SOIL INFORMATION, INCLUDING AVAILABLE SOIL TESTING SERVICES.) OR 400 TO 600 POUNDS OF 12-12-12
ANALYSIS FERTILIZER, OR EQUIVALENT.
_ SOD - SELECT A HIGH QUALITY, HEALTHY, VIGOROUS VARIETY WELL ADAPTED TO THE REGION AND
COMPATIBLE WITH THE INTENDED USE.
INSTALLATION
SOD SHOULD NOT BE INSTALLED DURING HOT WEATHER, ON DRY SOIL, FROZEN SOIL, COMPACTED CLAY,
LOOSE SAND OR GRAVELLY SUBSTRATE SOILS, AGGREGATE, OR PESTICIDE TREATED SOIL. THE IDEAL TIME
TO LAY SOD IS MAY 1 TO JUNE 1 OR SEPTEMBER 1 TO SEPTEMBER 30, ALTHOUGH IT CAN BE INSTALLED AS
EARLY AS MARCH 15 IF AVAILABLE OR JUNE 1 TO SEPTEMBER 1 IF IRRIGATED.
SITE PREPARATION
1.APPLY TOPSOIL IF EXISTING SOIL CONDITIONS ARE UNSUITABLE FOR ESTABLISHING VEGETATION.
2.GRADE THE SITE TO ACHIEVE POSITIVE DRAINAGE AND CREATE A SMOOTH, FIRM SOIL SURFACE.
3.WHERE APPLICABLE, USE A CHISEL PLOW, DISK, HARROW, OR RAKE TO BREAK UP COMPACTED SOILS AND
CREATE A FAVORABLE ROOTING DEPTH OF SIX TO EIGHT INCHES.
SOD BED PREPARATION
1.TEST SOIL TO DETERMINE PH AND NUTRIENT LEVELS.
2.IF SOIL PH IS TOO ACIDIC FOR THE GRASS SOD TO BE INSTALLED, APPLY LIME ACCORDING TO SOIL TEST
RESULTS OR AT THE RATE RECOMMENDED BY THE SOD SUPPLIER.
3.APPLY FERTILIZER AS RECOMMENDED BY THE SOIL TEST. IF TESTING WAS NOT DONE, APPLY 400 TO 600
POUNDS PER ACRE OF 12-12-12 ANALYSIS FERTILIZER, OR EQUIVALENT.
4.WORK THE SOIL AMENDMENTS INTO THE UPPER TWO TO FOUR INCHES OF SOIL WITH A DISK OR RAKE
OPERATED ACROSS THE SLOPE.
5.RAKE OR HARROW THE AREA TO ACHIEVE A SMOOTH FINAL GRADE AND THEN ROLL OR CULTIPACK THE
SOIL SURFACE TO CREATE A FIRM SURFACE ON WHICH TO LAY THE SOD.
LAYING THE SOD
1.INSTALL SOD WITHIN THIRTY-SIX HOURS OF ITS CUTTING.
2.STORE THE SOD IN A SHADED LOCATION DURING INSTALLATION.
3.IMMEDIATELY BEFORE LAYING THE SOD, RAKE THE SOIL SURFACE TO BREAK ANY CRUST. (IF THE WEATHER
IS HOT, LIGHTLY IRRIGATE THE SOIL SURFACE PRIOR TO LAYING THE SOD.)
4.LAY SOD STRIPS IN A BRICK-LIKE PATTERN.
5.BUTT ALL JOINTS TIGHTLY AGAINST EACH OTHER (DO NOT STRETCH OR OVERLAP THEM), USING A KNIFE OR
MASON'S TROWEL TO TRIM AND FIT SOD INTO IRREGULARLY SHAPED AREAS.
6.ROLL THE SOD LIGHTLY AFTER INSTALLATION TO ENSURE FIRM CONTACT BETWEEN THE SOD AND SOIL.
7.IRRIGATE NEWLY SODDED AREAS UNTIL THE UNDERLYING SOIL IS WET TO A DEPTH OF FOUR INCHES, AND
THEN KEEP MOIST UNTIL THE GRASS TAKES ROOT.
SLOPE APPLICATION
1.INSTALL THE SOD STRIPS WITH THE LONGEST DIMENSION PERPENDICULAR TO THE SLOPE.
2.WHERE SLOPES EXCEED A RATIO OF 3:1, STAPLE OR STAKE EACH STRIP AT THE CORNERS AND IN THE
MIDDLE.
CHANNEL APPLICATION
(SODDING PROVIDES QUICKER PROTECTION THAN SEEDING AND MAY REDUCE THE RISK OF EARLY WASHOUT.)
1.EXCAVATE THE CHANNEL, ALLOWING FOR THE FULL THICKNESS OF THE SOD.
2.LAY THE SOD STRIPS WITH THE LONGEST DIMENSION PERPENDICULAR TO CHANNEL FLOW.
3.STAPLE OR STAKE EACH STRIP OF SOD AT THE CORNERS AND IN THE MIDDLE.
4.STAPLE JUTE OR BIODEGRADABLE POLYPROPYLENE NETTING OVER THE SODDED AREA TO MINIMIZE THE
POTENTIAL FOR WASHOUT DURING ESTABLISHMENT.
MAINTENANCE
_ INSPECT WITHIN 24 HOURS OF EACH RAIN EVENT AND AT LEAST ONCE EVERY SEVEN CALENDAR DAYS UNTIL
SOD IS WELL ROOTED.
_ KEEP SOD MOIST UNTIL FULLY ROOTED.
_ AFTER SOD IS WELL-ROOTED (TWO TO THREE WEEKS), MAINTAIN A PLANT HEIGHT OF TWO TO THREE INCHES.
_ TIME MOWING TO AVOID RUTS IN TURF.
_ FERTILIZE TURF AREAS ANNUALLY. APPLY FERTILIZER IN A SPLIT APPLICATION. FOR COOL SEASON GRASSES,
APPLY ONE-HALF OF THE FERTILIZER IN LATE SPRING AND ONE-HALF IN EARLY FALL. FOR WARM-SEASON
GRASSES, APPLY ONE-THIRD IN EARLY SPRING, ONE-THIRD IN LATE SPRING AND ONE-THIRD IN MID-SUMMER.
REFERENCE IN CHAPTER 7 PAGES 47-50 IN THE INDIANA STORM WATER QUALITY MANUAL
CITY/STATE:
PROJECT:
DATE:DR. NO:
DR. BY:
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Grab Tensile Strength ASTM D 4632 kN (lbs)0.9 (205) x 0.9 (205)
Grab Tensile Elongation ASTM D 4632 %50 x 50
Puncture Strength ASTM D 4833 kN (lbs)0.58 (130)
Mullen Burst Strength ASTM D 3786 kPa (psi)2618 (380)
Trapezoid Tear Strength ASTM D 4533 kN (lbs)0.36 (80) X 0.36 (80)
UV Resistence ASTM D 4355 %70
Apparent Opening Size ASTM D 4751 Mm (US Std Sieve)0.180 (80)
Flow Rate ASTM D 4491 1/min/m (gal/min/ft )3866 (95)
Permittivity ASTM D 4491 Sec 1.2-1
22
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x
x ™
x ™
x
x
x
x
SILT FENCE INLET PROTECTION
INSTALLATION
1.DIG AN EIGHT-INCH DEEP, FOUR-INCH WIDE TRENCH AROUND THE PERIMETER OF THE
INLET.
2.IF USING PRE-ASSEMBLED GEOTEXTILE FABRIC AND POSTS, DRIVE THE POSTS INTO THE
SOIL, TIGHTLY STRETCHING THE GEOTEXTILE FABRIC BETWEEN POSTS AS EACH IS DRIVEN.
(POSTS MUST BE PLACED ON THE INLET SIDE OF THE ANCHOR TRENCH WITH THE
GEOTEXTILE FABRIC ON THE SIDE OF THE TRENCH FARTHEST FROM THE INLET.)
NOTE:IF ASSEMBLING THE GEOTEXTILE FABRIC AND POSTS ON-SITE, DRIVE THE POSTS INTO
THE SOIL AND THEN SECURE THE GEOTEXTILE FABRIC TO THE POSTS BY PLACING A PIECE
OF LATHE OVER THE FABRIC AND FASTENING IT TO THE POST
(STRETCHING THE FABRIC BETWEEN POSTS AS IT IS FASTENED).
3.USE THE WRAP JOIN METHOD WHEN JOINING POSTS.
4.PLACE THE BOTTOM 12 INCHES OF GEOTEXTILE FABRIC INTO THE EIGHT-INCH DEEP
TRENCH, LAYING THE REMAINING FOUR INCHES IN THE BOTTOM OF THE TRENCH AND
EXTENDING AWAY FROM THE INLET.
5.BACKFILL THE TRENCH WITH SOIL MATERIAL AND COMPACT IT IN PLACE.
6.BRACE THE POSTS BY NAILING BRACES INTO EACH CORNER POST OR UTILIZE RIGID
PANELS TO SUPPORT FABRIC.
NOTE: IN SITUATIONS WHERE STORM WATER MAY BYPASS THE STRUCTURE,
EITHER: SET THE TOP OF THE GEOTEXTILE FABRIC FILTER AT LEAST SIX INCHES LOWER THAN
THE GROUND ELEVATION ON THE DOWN-SLOPE SIDE OF THE STORM DRAIN INLET, BUILD A
TEMPORARY DIKE, COMPACTED TO SIX INCHES HIGHER THAN THE FABRIC, ON THE
DOWN-SLOPE SIDE OF THE STORM DRAIN INLET, AND/OR USE IN CONJUNCTION WITH
EXCAVATED DROP INLET PROTECTION.
MAINTENANCE
_ INSPECT DAILY.
_ INSPECT GEOTEXTILE FABRIC AND MAKE NEEDED REPAIRS IMMEDIATELY.
_ REMOVE SEDIMENT FROM POOL AREA TO PROVIDE STORAGE FOR THE NEXT STORM
EVENT. AVOID DAMAGING OR UNDERCUTTING FABRIC DURING SEDIMENT REMOVAL.
_ WHEN CONTRIBUTING DRAINAGE AREA HAS BEEN STABILIZED, REMOVE SEDIMENT,
PROPERLY DISPOSE OF ALL CONSTRUCTION MATERIAL, GRADE AREA TO THE ELEVATION
OF THE STORM DRAIN INLET TOP, THEN STABILIZE IMMEDIATELY.
REFERENCED IN CHAPTER 7 PAGE 153-157 IN THE INDIANA STORM WATER QUALITY MANUAL.
SECURELY FASTEN
OVERLAPPING ENDS
OF SILT FENCE
MATERIAL TO
ADJACENT STAKES
WITH THREE WIRE
TIES OR OTHER
FASTENERS
ATTACH THE WOVEN
WIRE FENCE TO EACH
POST WITH THREE
WIRE TIES OR OTHER
FASTENERS
SILT FENCE MATERIAL
TO BE FASTENED
SECURELY TO WOVEN
WIRE FENCE WITH
THREE TIES SPACED
AT 3" ON CENTER
4"x8" TRENCH
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)
C104SWPPP DETAILSW220335-C103 swppp detFOR NON PAVED AREAS (NO SCALE)
POSTS: 2 X 4 WOODEN STAKE
FENCE: WOVEN WIRE, 14-1/2 GA., 6" MAX. MESH OPENING
FABRIC: IN ACCORDANCE WITH ASTM D 6461 LATEST EDITION.
GEOTEXTILE FABRIC LAID ON
DOWN-SLOPE SIDE AND
BOTTOM OF TRENCH
EXTEND WIRE FENCE A
MIN. OF 8" INTO GROUND
WOVEN WIRE FENCE
WITH SILT FENCE
MATERIAL COVER
CROSS BRACE
1"x2" or 1"x3"
36" MAX.
(TYP.)
DROP INLET
WITH GRATE 12"MIN.18"MAX.2"x2" OR 2"X4"
WOOD FRAME
2"x2" or 2"x4" STAKE
5' MIN.
OVERLAP
(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.
CROSS SECTION
PERSPECTIVE VIEW
(NO SCALE)
SOD APPLICATION DETAIL
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.
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TABLE 1. SIZING FOR FLOW DISSIPATERS AT CULVERT PIPE OUTLETS
RIP-RAP SLOPE PROTECTION
T = ____ FEET
SPECIFICATIONS
SLOPE
A RATIO OF 2:1 OR FLATTER (DESIGNED BY A QUALIFIED INDIVIDUAL/PROFESSIONAL ENGINEER; SLOPES
EXCEEDING 2:1 MAY REQUIRE ADDITIONAL DESIGN CONSIDERATIONS).
MINIMUM THICKNESS
TWO TIMES THE DESIGNED d50 (SEE APPENDIX A - GLOSSARY) STONE DIAMETER PLUS THE DEPTH OF THE
BEDDING MATERIAL.
MATERIALS
x RIP-RAP
- HARD, ANGULAR, AND WEATHER RESISTANT.
- SPECIFIC GRAVITY OF AT LEAST 2.5.
- SIZE AND GRADATION THAT WILL WITHSTAND VELOCITIES OF STORM WATER DISCHARGE FLOW DESIGN.
- WELL-GRADED MIXTURE OF STONE WITH 50 PERCENT OF THE STONE PIECES, BY WEIGHT, LARGER THAN
THE DESIGNED d50 SIZE.
- LARGEST PIECES SHOULD NOT EXCEED TWO TIMES THE DESIGNED d50 AND NO MORE THAN 15 PERCENT
OF THE PIECES (BY WEIGHT) SHOULD BE LESS THAN THREE INCHES.
x BEDDING MATERIAL - GEOTEXTILE FABRIC, SAND, OR CRUSHED AGGREGATE [INDIANA DEPARTMENT OF
TRANSPORTATION CA NO. 9, 11, OR 12 (SEE APPENDIX D)].
INSTALLATION
SUBGRADE PREPARATION
1.REMOVE BRUSH, TREES, STUMPS, AND OTHER DEBRIS AND DISPOSE OF IN DESIGNATED AREAS.
2.EXCAVATE FOUNDATION SUBGRADE BELOW DESIGN ELEVATION TO ALLOW FOR THICKNESS OF THE
BEDDING MATERIAL AND RIP-RAP.
3.COMPACT ANY FILL MATERIAL TO THE DENSITY OF THE SURROUNDING UNDISTURBED SOIL.
4.CUT A KEYWAY IN STABLE MATERIAL AT THE SLOPE BASE TO REINFORCE THE TOE; KEYWAY DEPTH SHOULD
BE ONE AND ONE-HALF TIMES THE DESIGN THICKNESS OF THE STONE AND SHOULD EXTEND A HORIZONTAL
DISTANCE EQUAL TO THE DESIGN THICKNESS (SEE RIP-RAP SLOPE PROTECTION WORKSHEET).
5.SMOOTH THE GRADED FOUNDATION.
PLACEMENT OF BEDDING MATERIAL
1.IF USING GEOTEXTILE FABRIC, PLACE ON THE SMOOTHED FOUNDATION, OVERLAP THE EDGES AT LEAST 12
INCHES AND SECURE WITH ANCHOR PINS SPACED EVERY THREE FEET ALONG THE OVERLAP. (FOR LARGE
RIP-RAP, CONSIDER A FOUR INCH LAYER OF SAND TO PROTECT THE FABRIC.)
2.IF USING SAND OR AGGREGATE BEDDING MATERIAL, SPREAD THE WELL-GRADED BEDDING MATERIAL IN A
UNIFORM LAYER TO THE REQUIRED THICKNESS (SIX INCHES MINIMUM). IF TWO OR MORE LAYERS ARE
SPECIFIED, PLACE THE LAYER OF THE SMALLER GRADATION FIRST AND AVOID MIXING THE LAYERS.
NOTE: OMISSION OF THE BEDDING MATERIAL OR DAMAGE TO IT MAY RESULT IN EROSION AND/OR PIPING
BENEATH THE RIP-RAP OR MOVEMENT OF THE UNDERLYING SOIL THROUGH THE VOIDS IN THE
RIP-RAP.
RIP-RAP PLACEMENT
1.IMMEDIATELY AFTER INSTALLING THE BEDDING MATERIAL, ADD RIP-RAP TO THE LINES AND ELEVATIONS
SHOWN IN THE CONSTRUCTION PLANS. PLACE THE RIP-RAP IN ONE OPERATION, TAKING CARE NOT TO
DAMAGE THE BEDDING MATERIAL. (DO NOT DUMP THROUGH CHUTES OR USE ANY METHOD THAT CAUSES
SEGREGATION OF STONE SIZES OR THAT WILL DISLODGE OR DAMAGE THE UNDERLYING BEDDING
MATERIAL.)
2.IF GEOTEXTILE FABRIC TEARS WHEN PLACING RIP-RAP, REPAIR IMMEDIATELY BY LAYING AND STAPLING A
PIECE OF FABRIC OVER THE DAMAGED AREA, OVERLAPPING THE UNDAMAGED AREAS BY AT LEAST 12
INCHES.
3.PLACE SMALLER STONE IN VOIDS TO FORM A DENSE, UNIFORM, WELL-GRADED RIP-RAP MASS. (SELECTIVE
LOADING AT THE QUARRY AND SOME HAND PLACEMENT MAY BE NEEDED TO ENSURE AN EVEN
DISTRIBUTION OF STONE MATERIAL.)
4.BLEND THE RIP-RAP SURFACE SMOOTHLY WITH THE SURROUNDING AREA TO ELIMINATE PROTRUSIONS OR
OVERFALLS.
MAINTENANCE
x INSPECT WITHIN 24 HOURS OF EACH RAIN EVENT AND AT LEAST ONCE EVERY SEVEN CALENDAR DAYS.
x CHECK FOR DISPLACEMENT OF RIP-RAP MATERIAL, SLUMPING, AND EROSION ALONG THE EDGES,
ESPECIALLY ON THE DOWN-SLOPE SIDE. (PROPERLY DESIGNED AND INSTALLED RIP-RAP USUALLY
REQUIRES VERY LITTLE MAINTENANCE.)
REFERENCE IN CHAPTER 7 PAGE 69 IN THE INDIANA STORM WATER QUALITY MANUAL
T= AGGREGATE THICKNESS (≥2xd50)
T= ____ FEET
1.5T
(MIN.)
KEYWAY
BEDDING MATERIAL /
FILTER MEDIUM
SMOOTH
FOUNDATION UNDER
BEDDING MATERIAL/
FILTER MEDIUM
(NO SCALE)
CROSS SECTION
PERSPECTIVE VIEW
-
-
-REVISIONS AND ISSUESPart of the NW/4 of Section 06, Township 17 North, Range 4 East, Delaware Township, Hamilton County, IndianaW220335PREPARED FOR:1701 E. 116TH STREET PROJECT NO.
SHEET NO.CHECKED BY:DRAWN BY:TASDESIGNED BY:DWG NAME:PROJECT NO.:W220335DATEBY09.14.2022SSRDATE:TASAPPROVAL PENDINGNOT FOR CONSTRUCTIONCARMEL OFFICE BUILDINGRevised site based on Carmel comments and building changes2023-02-24SR/MSREVISIONS PER ADLS REVIEW 2023-06-05SSRSTEVEN SCOTT RUCKER P.E. 11300279ENGINEERS317 | 846 - 6611800 | 452 - 6408317 | 843 - 0546 faxWEIHELand Surveying | Civil EngineeringLandscape ArchitectureALLAN H. WEIHE, P.E., L.S. - FOUNDER10505 N. College AvenueIndianapolis, Indiana 46280weihe.netBuild with confidence.SM06/05/2023