20191709 Ver 1_COMBINED SET_20200501

HEST
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SANITARY SEWER REHABILITATION
(PROJECT NO. 2014017)
MSD OF BUNCOMBE COUNTY
INDEX OF DRAWINGS
SHEET NO.
DESCRIPTION
C-1
INDEX OF DRAWINGS AND VICINITY MAP
PL-1
OVERALL SANITARY SEWER PLAN
PL-2
SANITARY SEWER PLAN & PROFILE
PL-3
SANITARY SEWER PLAN & PROFILE
PL-4
SANITARY SEWER PLAN & PROFILE
PL-5
SANITARY SEWER PLAN & PROFILE
PL-6
SANITARY SEWER PLAN & PROFILE
PL-7
SANITARY SEWER PLAN & PROFILE
D-1
SANITARY SEWER DETAILS
D-2
SANITARY SEWER DETAILS
D-3
EROSION CONTROL DETAILS
GENERAL NOTES:
1. LENGTHS SHOWN ARE NOT ACTUAL PIPE LENGTHS BUT ARE DISTANCES STATION TO STATION. SLOPES SHOWN ON THE PROFILE
ARE CALCULATED USING LENGTHS FROM INSIDE EDGES OF MANHOLE.
2. ALL WORK ON THIS PROJECT SHALL COMPLY WITH THE CURRENT STANDARD DETAILS AND SPECIFICATIONS OF THE METROPOLITAN
SEWERAGE DISTRICT OF BUNCOMBE COUNTY. SPECIAL CONDITIONS AND SPECIAL PROVISIONS MAY APPLY TO THIS PROJECT - SEE
SPECIFICATIONS.
3. ALL WORK SHALL COMPLY WITH FEDERAL, STATE, AND LOCAL LAWS AND REGULATIONS, AS MAY BE APPLICABLE TO THIS PROJECT
AND THE WORK DONE HEREUNDER.
4. WHERE FEDERAL, STATE, OR LOCAL LAWS REQUIRE THAT A PERMIT BE ISSUED AND OBTAINED FOR WORK DONE UNDER THIS
PROJECT, ALL WORK PERFORMED BY THE CONTRACTOR SHALL BE PERFORMED IN STRICT COMPLIANCE WITH THE TERMS AND
CONDITIONS SET FORTH IN THE PERMIT.
5. ANY MODIFICATIONS TO THESE CONSTRUCTION PLANS OR SPECIFICATIONS SHALL BE APPROVED BY THE MSD PROJECT ENGINEER.
6. THE CONTRACTOR SHALL VERIFY THE LOCATION OF ALL UNDERGROUND UTILITIES PRIOR TO THE START OF CONSTRUCTION.
7. THE CONTRACTOR SHALL TAKE ALL NECESSARY STEPS TO KEEP THE SEWER AND ALL OTHER UTILITIES IN SERVICE AT ALL TIMES
DURING CONSTRUCTION. THE CONTRACTOR SHALL ASSUME ALL RESPONSIBILITY FOR REPAIRS OF ANY KIND FOR DAMAGES
RESULTING FROM THE CONTRACTOR'S CONSTRUCTION ACTIVITIES.
8. THE CONTRACTOR SHALL LOCATE ALL SERVICES CURRENTLY SERVED BY THE EXISTING SEWER AND RECONNECT TO THE NEW
SEWER, INSTALLING A CLEANOUT ASSEMBLY AS REQUIRED (SEE DETAIL).
9. THE CONTRACTOR SHALL RESTORE ALL STREETS, PROPERTIES, AND IMPROVEMENTS TO AS GOOD OR BETTER CONDITION THAN
EXISTED PRIOR TO CONSTRUCTION.
10. PROPERTY LINES SHOWN ON PLANS ARE APPROXIMATE ONLY. PROPERTY MONUMENTS DISTURBED DURING CONSTRUCTION SHALL
BE RESET BY A LICENSED NC PROFESSIONAL LAND SURVEYOR.
11. DESIGN BASED ON SURVEY INFORMATION PROVIDED BY WES COLE LAND SURVEYING AT 828-251-7025.
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VICINITY MAP
Scale: NTS
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(TOLL FREE)
DIAL 811 BEFORE
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IT'S THE LAW
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PROPOSED ABANDON PLUG
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PROPOSED MANHOLE NUMBER
PROPOSED ABANDON SEWER MANHOLE
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UTILITY POLE
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ELECTRICAL JUNCTION BOX
CURB INLET
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CATCH BASIN
PROPOSED SEWER LINE
-----s-----s—
EXISTING SEWER LINE
— —
EXISTING PERMANENT EASEMENT
— — — — — — — — — — —
PROPOSED PERMANENT EASEMENT
— —
PROPOSED TEMPORARY EASEMENT
PROPOSED SURFACE REPAIR
— — — —
PROPERTY LINE
----Row
ROW LINE
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EXISTING WATER LINE
— ——--- — --- — —
EXISTING STREAM/CREEK
FEMA LINE (100 yr)
— — —
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CONCRETE
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EXISTING MINOR CONTOUR
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LOCKDOWN / WATERTIGHT MH N: 691,872.04' „
EXISTING MH TO REMAIN STA. 2+36.16 LINE A
MSD #13-421148 E: 1,009,689.57'
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CL INV.: 2,279.7' INV. OUT: 2,283.85' (B)
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S1 CROSSING SWANNANOA RIVER NOTES:
1. WORK WITHIN SWANNANOA RIVER SHALL OCCUR AT LOW RIVER FLOWS APRIL16TH - DECEMBER 31.
2. NATIVE STREAM SUBSTRATE SHOULD BE SEGREGATED DURING EXCAVATION. FOLLOWING
INSTALLATION OF SEWER LINE, THE STREAM BED AND BANKS SHALL BE RESTORED TO ORIGINAL
CONTOURS WITH NATIVE SUBSTRATE.
3. SEEDING RESTORATION SHOULD BE PERFORMED IN ACCORDANCE WITH SEEDING SCHEDULE FOR
STREAM RIPARIAN AREAS.
4. THIS LOCATION IS A SUSPECTED HELLBENDER HABITAT. NC WILDLIFE REQUESTS THAT ANY
HELLBENDERS DISCOVERED IN THE AREA BE RESCUED IN A BUCKET, AND MOVED DOWNSTREAM,
OUT OF THE WAY OF EQUIPMENT AND CONSTRUCTION ACTIVITIES.
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SANITARY SEWER PLAN LINE "A"
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INV. IN: 2,293.55' (B) j N: 691,301.03'
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EXISTING SOIL EXISTING SOIL
12" OF FINE LOOSE EARTH FREE
FROM LARGE CLODS, STONES,
DEBRIS, VEGETABLE MATTER,
OR OTHER OBJECTIONABLE
MATERIALS.
DRY
UNDISTURBED TRENCH BACKFILL MATERIAL
EARTH COMPACTED TO 85% STANDARD
PROCTOR IN 12" LIFTS.
INITIAL BACKFILL SEE
TRENCH DETAILS.
LOOSE INITIAL
BACKFILL
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TRENCH BACKFILL IN MSD RIGHTS OF WAY
N.T.S.
LOOSE INITIAL
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LOOSE INITIAL
BACKFILL
UNDISTURBED EARTH
LIGHTLY COMPACTED
BACKFILL TO TOP OF
PIPE
LOOSE INITIAL
BACKFILL
LIGHTLY COMPACTED
BACKFILL TO TOP OF
PIPE
JNDISTURBED EARTH
BACKFILL COMPACTED
TO 80% STANDARD
PROCTOR TO TOP OF
PIPE
PIPE BEDDED IN SAND,
\\� D GRAVEL, OR CRUSHED
STONE TO 1/8th PIPE
UNDISTURBED EARTH i\/ , / DIAMETER, 4" MINIMUM
TYPE 4
GRANULAR OR SELECT
BACKFILL COMPACTED UNDISTURBED EARTH
TO 90% STANDARD
PROCTOR TO TOP OF
PIPE SEE DETAIL 2.05-02 FOR
ALLOWABLE DEPTHS
PIPE BEDDED TO
SPRINGLINE IN
GRANULAR MATERIAL TRENCH WIDTH
MINIMUM 4" BELOW
INVERT OF PIPE,
THE MINIMUM TRENCH WIDTH SHALL BE
COMPACTED TO 90%
THE NOMINAL PIPE DIAMETER PLUS 24",
STANDARD PROCTOR
EXCEPT THAT THE MINIMUM TRENCH
WIDTH SHALL NOT BE LESS THAN 48" IN
ANY CASE
UNDISTURBED EARTH
NOTES:
1. MINIMUM ALLOWABLE DEPTH OF COVER IS 3 FT.
2. IN ROCK OR WET SOIL, PIPE MUST BE BEDDED IN AT LEAST 6" OF CRUSHED STONED EMBEDMENT
MATERIAL BELOW THE INVERT OF THE PIPE.
3. GRANULAR MATERIALS ARE DEFINED PER THE AASHTO SOIL CLASSIFICATION SYSTEM (ASTMD3282)
OR THE UNIFIED SOIL CLASSIFICATION SYSTEM (ASTM D2487), WITH THE EXCEPTION THAT GRAVEL
BEDDING/BACKFILL ADJACENT TO THE PIPE IS LIMITED TO 2" MAXIMUM PARTICLE SIZE PER ANSI/AWWA
C600
4. THESE PIPES ARE ADEQUATE FOR DEPTHS OF COVER FROM 3 FT. UP TO THE MAXIMUM SHOWN
INCLUDING AN ALLOWANCE FOR A SINGLE H-20 TRUCK WITH A 1.5 IMPACT FACTOR UNLESS NOTED.
5. RING DEFLECTION LIMITED TO 3%, MINIMUM SAFETY FACTOR OF 2. EARTH LOAD BASED ON SOIL
WEIGHT OF 120 PCF.
UNDISTURBED EARTH
MINIMUM
WASHED STONE EMBEDMENT
MATERIAL
MINIMUM
;P
".,. �TRONGBACK" 5003
SERIES COUPLING FOR CLAY TO
DUCTILE IRON OR APPROVED
EQUAL
NOTES:
1. ONLY ONE TRANSITION IN PIPE MATERIALS
ALLOWED BETWEEN ANY TWO MANHOLES.
2. FOR PVC TO D.I.P., AND D.I.P. TO D.I.P.
CONNECTIONS, LONG BODY D.I.M.J. SLEEVES
SHALL BE USED.
NOTE: FITTINGS SHALL BE THE
SAME MATERIAL AS EXIST. SEWER
WYE
PE X PE NIPPLE
SLEEVE
FLOW
EXISTING SEWER EXISTING SEWER
L
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#57 STONE TO
SPRINGLINE
4so
SEE SERVICE
CONNECTION DETAIL
NOT FOR USE ON NEW CONSTRUCTION.
STANDARD DETAIL
Metropolitan Sewerage District
of Buncombe County, North Carolina
SERVICE CONNECTION TO
EXISTING SEWER
DATE APPROVED: MARCH 2O17 2.07 - 01
NOTES:
1. WYE CONNECTIONS ARE STANDARD FOR NEW SEWER MAIN CONSTRUCTION.
2. FORCE MAINS CARRYING DOMESTIC WASTEWATER FROM SANITARY CONVENIENCES
WITHIN A SINGLE BUILDING, MAY BE CONNECTED TO A 4" MSD GRAVITY SERVICE LINE
PROVIDED THAT GRAVITY FLOW WILL BE MAINTAINED DURING PROPOSED MAXIMUM
DISCHARGE RATE FOR THE GRINDER OR EFFLUENT PUMP(S).
3. WHERE COVER IS LESS THAN 3 FT. DUCTILE IRON MUST BE USED.
4. WHERE DUCTILE IRON IS REQUIRED RISER MAY BE CONSTRUCTED WITH SCH. 40 PVC
COUNTERSUNK PVC
PLUG
CLEANOUT BOX
INSTALLED ON 8" OF
COMPACTED PIPE
EMBEDMENT
MATERIALS
2' MAX. UNLESS
OTHERWISE INDICATED
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CONNECT TO EXISTING SEWER SERVICE WITH
APPROVED COUPLING OR INSTALL PVC PLUG FOR
FUTURE SERVICE. WHEN REQUIRED BACKFLOW
VALVES SHALL BE INSTALLED ON PORTION OF LATERAL
TO BE MAINTAINED BY PROPERTY OWNER.
SEE DETAIL 2.07-03
FOR ADDITIONAL NOTES
C�ii:l�►1�
GLUED
CAP
NOTE
CUT OFF EXTENSION
TO CONNECT HOUSE SERVICE
(PROVIDE MINIMUM COVER OF
30") AND INSTALL CLEAN -OUT
NOTES:
1. WYE CONNECTIONS ARE STANDARD FOR NEW SEWER MAIN CONSTRUCTION.
2. FORCE MAINS CARRYING DOMESTIC WASTEWATER FROM SANITARY CONVENIENCES
WITHIN A SINGLE BUILDING, MAY BE CONNECTED TO A 4" MSD GRAVITY SERVICE LINE
PROVIDED THAT GRAVITY FLOW WILL BE MAINTAINED DURING PROPOSED MAXIMUM
DISCHARGE RATE FOR THE GRINDER OR EFFLUENT PUMP(S).
3. WHERE COVER IS LESS THAN 3 FT. DUCTILE IRON MUST BE USED.
4. WHERE DUCTILE IRON IS REQUIRED RISER MAY BE CONSTRUCTED WITH SCH. 40 PVC
2' MAX. UNLESS OTHERWISE INDICAT
COUNTERSUNK PVC PLUG
CLEANOUT BOX INSTALLED
ON 8" OF COMPACTED PIPE
IN -LINE WYE (REQ'D FOR EMBEDMENT MATERIALS
LINES 12" AND LESS
SCHED. 40 PVC or D.I.P.
1 FT. SECTION OF PIPE WITH GLUED CAP.
r— BEND
SEWER LATERAL CONSTRUCTED AT 2%
GRADE UNLESS OTHERWISE INDICATED.
UNDISTURBED EARTH
PROVIDE STONE BEDDING
UNDER WYE (OR TAPPING
SADDLE) AND BEND
CONNECT TO EXISTING SEWER
SERVICE WITH APPROVED
"COUPLING" OR INSTALL PVC PLUG
FOR FUTURE SERVICE. WHEN
REQUIRED BACKFLOW VALVES
SHALL BE INSTALLED ON PORTION
OF LATERAL TO BE MAINTAINED BY
PROPERTY OWNER.
— PVC REQUIRES 6" BEDDING
FULL LENGTH OF SERVICE TRENCH
SHALL BE COMPACTED IN 6" LIFTS
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NOTE:
1. ALL SANITARY SEWER CLEANOUT BOXES AND
COVERS SHALL BE MANUFACTURED FROM GRAY
IRON (CAST IRON) MEETING THE REQUIREMENTS
OF AWWA C110 AND ASTM A536.
2. ALL SANITARY SEWER CLEANOUT BOXES AND
COVERS SHALL CONFORM TO PARAGRAPH 2.01(d)
OF ITEM II, SECTION VI OF MSD's TECHNICAL
SPECIFICATIONS (MADE IN THE U.S.A.)
3. NON -TRAFFIC LOCATIONS; SANITARY SEWER
CLEANOUT BOXES AND COVERS SHALL BE AS
MANUFACTURED BY EAST JORDAN IRON WORKS
MODEL 1566 (OR APPROVED EQUAL) STANDARD DETAIL
4. TRAFFIC LOCATIONS; SANITARY SEWER CLEANOUT Metropolitan Sewerage District
BOXES AND COVERS SHALL BE AS MANUFACTURED of Buncombe County, North Carolina
BY EAST JORDAN IRON WORKS MODEL 1574 (OR
APPROVED EQUAL) CLEANOUT BOX
DATE APPROVED: MARCH 28, 2019 2.07 - 05
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TRENCH
PIPE WIDTH
EMBEDMENT
MATERIAL O
SECTION C-C
N.T.S.
CASTIRON
FRAME & COVER
12" MAX. BRICK
ADJUSTMENT
MANHOLE
STEPS
SEE
DETAIL
"A"
4'- 0"
_
MINIMUM
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EMBEDMENT
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EMBEDMENT UNDISTURBED
MATERIAL
SECTION A -A
MANHOLE NOTES: N.T.S
1. FOR MANHOLES LARGER THAN 4 FT. DIA., MAINTAIN
FULL MANHOLE DIA. TO 6 FT. ABOVE INVERT BENCH.
2. FOR 5 FT. AND 6 FT. DIA. MANHOLES, USE A
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FT. TO 10 FT. DIA. MANHOLES, USE A TRANSITION
TOP TO REDUCE TO 4 FT. DIA.
2 ROPES BUTYL
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6" MIN. PIPE
EMBEDMENT MATERIAL
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FILL WITH NATIVE
MATERIAL TO RIVER
FLOOR
RIVER FLOOR
d
d
d
d
1.
• .°
;.
• 12" MIN. ALL
•a AROUND PIPE
PIPE O.D. + 24"
CONCRETE ENCASEMENT DETAIL
N.T.S
TYPE II CONCRETE
CONCRETE ANCHOR
BOLTS (IF REQUIRED)
5/8"0 LIFTING BAR (TYP.)
COVER
N.T.S
5/8"0 LIFTING BAR (TYP.)
STANDARD RING AND COVER
N.T.S
MATCH FRAME TO EXISTING GRADE
2-0
FOR LANDSCAPED LOCATIONS
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2"x1/4" BUTYL
CONCRETEANCHOR
PRECAST MANHOLE
BOLT FOUR (4) MIN.
FRAME SET IN NON -ROADWAY LOCATION
N.T.S
MACHINED
SURFACES
�1
GROUT f PAVEMENT
BRICK -GROUT
ALL JOINTS
X
N
2"x1/4"
BUTYL
PRECAST CONCRETE
3 BRICKS (MAX.) GRADE RING
PRECAST MANHOLE
FRAME SET IN ROADWAY LOCATION
N.T.S
NOTE: STANDARD DETAIL
1. WHERE M.H. IS IN ROAD SHOULDER AND ROAD Metropolitan Sewerage District
DOES NOT HAVE CURB AND GUTTER, DO NOT USE P g
ANCHOR BOLTS IN FRAME. of Buncombe County, North Carolina
2. "MSD OF BUNCOMBE COUNTY" TO APPEAR ON STANDARD MANHOLE
COVERS ONLY WHEN THE SEWER SYSTEM IS TO BE
MAINTAINED BY MSD FRAME & COVER
DATE APPROVED: MARCH 2O17 2.11 - 08.1
PLAN VIEW
N.T.S.
a�
A�
SECTION A -A
N.T.S
UNDISTURBED EARTH
TRENCH WALL
T
CV
FLOW
NOTES:
1. CONCRETE SHALL BE 3000 P.S.I.
2. REINFORCING SHALL BE No.4 BARS @
12" E.W.
3. REINFORCING BARS SHALL BE
FORMED AND TIED TOGETHER.
4. ANCHOR SPACING SHALL BE:
SLOPE SPACING
20-35% 36 FT.
35-50% 24 FT.
> 50% 16 FT.
5. DUCTILE IRON PIPE MUST BE USED
WHEN SLOPES ARE 20% OR GREATER
6. KEYING PIPES IS REQUIRED FOR ALL
DIP INSTALLED @ 20% OR GREATER
GRADE.
PENTA HEADED S.S. CAM LOCK
- 5/8"0 LIFTING BAR (TYP.)
ONE PIECE RUBBER
GASKET (REQUIRED
WHEN SUBJECT TO COVER
INUNDATION)
N.T.S
PENTA HEADED S.S. CAM LOCK (IF REQUIRED)
5/8"0 LIFTING BAR (TYF
CONCRETE ANCHOR BOLTS (IF REQUIR
WATERTIGHT RING AND COVER LOCKING
N.T.S
2 0 MATCH FRAME TO EXISTING GRADE FOR
LANDSCAPED LOCATIONS
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CONCRETE ANCHOR
BOLT FOUR (4) MIN.
PRECAST MANHOLE
FRAME SET IN NON -ROADWAY LOCATION
N.T.S.
MACHINED SURFACES
2" MAX.
PAVEMENT
GROUT
2" x 1 /4"
BRICK -GROUT
12" MAX. BUTYL
ALL JOINTS
PRECAST
CONCRETE
3 BRICKS (MAX.) GRADE RING
PRECAST MANHOLE
FRAME SET IN ROADWAY LOCATION
N.T.S.
NOTE:
STANDARD DETAIL
1. WATERTIGHT FRAME &COVER REQUIRED IN Metropolitan Sewerage District
FLOODPLAIN OR WHEN SPECIFIED ON PLANS
of Buncombe County, North Carolina
2. "MSD OF BUNCOMBE COUNTY" TO APPEAR ON WATERTIGHT MANHOLE
COVERS ONLY WHEN THE SEWER SYSTEM IS
TO BE MAINTAINED BY MSD
FRAME & COVER
DATE APPROVED: MARCH 2O17 2.11 - 08.2
USE PRECAST CONCRETE STORM
DRAIN STRUCTURE- SIZE SHALL
BE DETERMINED BY STORM PIPE
SIZE (MFR. RECOMMENDATIONS)
AND SEAL ANNULUS WITH NON -
SHRINK GROUT A
EXISTING STORM
CONFLICT WITH F
SANITARY SEWEI
FILL ANNULUS W
NON -SHRINK GR1
SECTIONAL PLAN
SECTION F-F
REMOVE PORTION OF
CONFLICTING STORM
DRAIN PIPING AS SHOWN
DUCTILE IRON SANITARY
SEWER- CENTER LENGTH
OF PIPE SUCH THAT THE
BELL AND SPIGOT ENDS
ARE EQUIDISTANT FROM
CENTERLINE OF STORM PIPE
1­1 O ,-OVER
WER"
E IRON SANITARY
:TAIL PROVIDED IN
CONFLICT WITH AN
EXISTING STORM SEWER IS
ENCOUNTERED
EXISTING AND
FINISH GRADE BREAKDOWN AND REMOVE PORTION
OF MANHOLE TO A POINT T-0"
BELOW FINISH GRADE
\ IN
M
FILL AS SPECIFIED
— I- UNDER"TRENCH
BACKFILL"
MANHOLE TO BE
ABANDONED
WATERTIGHT
MASONARY PLL
IPE DIA. + 1'-0
TYPICAL
FILL WITH MATERIAL THAT
IS NON -COMPRESSIBLE
WATERTIGHT
MASONRY PLUG
MANHOLE ABANDONMENT PROCEDURE
(SEE SECTION 2.21 OF SPECIFICATIONS FOR ADD'L INFORMATION)
MANHOLES WHICH ARE TO BE ABANDONED WILL FIRST HAVE BOTH INFLUENT AND EFFLUENT LINES
PLUGGED INSIDE THE MANHOLE WITH WATERTIGHT MASONRY. THE MINIMUM LENGTH OF WATERTIGHT
MASONRY PLUGS WILL BE THE DIAMETER OF THE ABANDONED PIPE PLUS ONE FOOT. THE MANHOLE WILL
THEN BE FILLED WITH INCOMPRESSIBLE MATERIAL (CRUSHED STONE OR AS APPROVED), TO A POINT
THREE FEET (3'-0") BELOW THE FINISH GRADE. THE REMAINDER OF THE MANHOLE SHALL BE BROKEN
DOWN AND REMOVED. THEN THE EXCAVATION SHALL BE BACKFILLED TO FINISH GRADE AS SPECIFIED
UNDER TRENCH BACKFILL.
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SEQUENCE OF CONSTRUCTION
1) OBTAIN LAND DISTURBANCE PERMIT (BY MSD)
2) INSTALL CONSTRUCTION ENTRANCES AS NEEDED.
3) INSTALL DROP INLET PROTECTION AT ALL EXISTING CATCH BASINS AS SHOWN ON PLANS PRIOR TO
CLEARING AND EXCAVATION.
4) INSTALL TEMPORARY SEDIMENT TRAPS, SILT FENCES AND CHECK DAMS PRIOR TO CLEARING AND
EXCAVATING.
5) INSTALL EROSION CONTROL FEATURES AS CLEARING PROGRESSES.
6) PROVIDE TEMPORARY SEEDING IF CLEARING IS MORE THAN 14 DAYS AHEAD OF PIPELINE
CONSTRUCTION.
7) FINE GRADE, SEED AND MULCH IMMEDIATELY BEHIND PIPELINE CONSTRUCTION.
8) MAINTAIN EROSION CONTROL FEATURES IN GOOD WORKING ORDER UNTIL SITE IS STABILIZED.
9) THE LOCATION OF EROSION CONTROL FEATURES SHOWN ON THE PLANS AND DESCRIBED IN
THE SPECIFICATIONS IS SUBJECT TO FIELD MODIFICATION TO PROVIDE THE MOST EFFICIENT
EROSION CONTROL PLAN.
10) EROSION CONTROL FEATURES MAY BE REMOVED AFTER PERMANENT VEGETATION IS
ESTABLISHED AND THE SITE IS STABILIZED.
5' LG. STEEL POST SET MIN. 24"
INTO GROUND AND 8' BETWEEN
POSTS
8'-0" (TYP.) m.
SYNTHETIC FABRIC SILT FENCE
WITH 14 GA. WIRE FENCE
SUPPORT
STANDARD SILT FENCE
N.T.S.
POST 24" SYNTHETIC FABRIC
DEEP, MIN. SILT FENCE
WIRE MESH SUPPORT
(SEE NOTE #2)
COMPACTED BACKFILL
GROUND g�oPe.
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6" WIRE NOTES
z BELOW GROUND
0 g 1) ENSURE THAT THE HEIGHT OF THE SEDIMENT FENCE DOES
NOT EXCEED 18" ABOVE THE GROUND SURFACE. (HIGHER
FENCE MAY IMPOUND VOLUMES OF WATER SUFFICIENT TO
4" CAUSE FAILURE OF THE STRUCTURE.)
SECTION A -A 2) SUPPORT STANDARD STRENGTH FILTER FABRIC BY WIRE
N.T.S. MESH FASTENED SECURELY TO THE UPSLOPE SIDE OF THE
POSTS USING HEAVY DUTY WIRE STAPLES AT LEAST 1" LONG,
OR TIE WIRES. EXTEND THE WIRE MESH SUPPORT TO THE
BOTTOM OF THE TRENCH. USE WIRE FENCE WITH A MIN. 14
GAUGE AND A MAX. MESH SPACING OF 6".
3) DO NOT ATTACH FILTER FABRIC TO EXISTING TREES.
4) SILT FENCE MATERIAL SHALL MEET THE REQUIREMENTS OF
ASTM SPECIFICATIONS D4632, D4491 & D4751. GRAB STRENGTH
SHALL BE 400 LB. (MIN.). PERMIABILITY SHALL BE 0.05 SEC.-1
(MAX.). APPARENT OPENING SIZE SHALL BE 0.60 MM, (MAX.).
ULTRAVIOLET STABILITY SHALL BE 70%,(MIN.), AFTER 500
HOURS EXPOSURE.
NOTES:
1) ALL RIP -RAP SHALL BE NC DOT SPECIFICATION CLASS 1 AND SHALL CONSIST OF WELL GRADED
STONES MEASURING FROM 5" TO 17". NO MORE THAN 5.0% OF THE MATERIAL FURNISHED CAN BE LESS
THAN THE MINIMUM SIZE SPECIFIED NOR NO MORE THAN 10.0% OF THE MATERIAL CAN EXCEED THE
MAXIMUM SIZE SPECIFIED.
2) WASHED STONE SHALL CONFORM TO N.C.D.O.T. # 67 STONE SPECIFICATION
3) FILTER FABRIC SHALL BE TREVIRA SPUNBOND TYPE 1125 AS MANUFACTURED BY HOECHST
CELANESE OR APPROVED EQUAL AND SHALL HAVE A MIN. TENSILE STRENGTH OF 200 POUNDS.
PUNCTURE STRENGTH SHALL BE A MINIMUM OF 90 POUNDS.
4) SILT FENCE SHALL BE WOVEN POLYPROPYLENE FABRIC 36"WIDE. GRAB STRENGTH SHALL BE 120
LBS., ELONGATION 20%, TRAP TEAR STRENGTH 85 LBS., BURST STRENGTH 250 PSI., UV RESISTANCE
90% AND SLURRY FLOW RATE 0.5 GPM/FT.
5) INLET PROTECTION SHALL BE PROVIDED AT ALL INLETS AFFECTED BY THE CONSTRUCTION (SEE
DETAIL).
6) CONSTRUCTION ENTRANCES SHALL BE PROVIDED AT ALL POINTS OF ACCESS TO PUBLIC
HIGHWAYS.
MATTING PLACED FLUSH WITH BANK
SURFACE, LAP OVER DOWNSTREAM/
DOWNSLOPE SEAMS
1' MIN. OVERLAP
12" WOOD STAKE PLACED
IN T O.C. DIAMOND PATTERN
SMOOTH SURFACE,
REMOVE ALL DEBRIS
AND SEED/MULCH
BEFORE PLACING MATTING
MATTING ANCHORED 1'
BELOW STREAM BED
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