20190981 Ver 1_0 08 DUR18000-EC3_20190801

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20
/
F,O
6" MIN
COARSE AGGREGATE
2-3"
NOTES
1. GRAVEL PAD TO BE 12'X 50' AND 6" THICK MINIMUM
2. TURNING RADIUS SUFFICIENT TO ACCOMMODATE LARGE TRUCKS IS TO BE PROVIDED.
3. ENTRANCE(S) SHOULD BE LOCATED TO PROVIDE FOR MAXIMUM UTILITY BY ALL CONSTRUCTION VEHICLES.
4. MUST BE MAINTAINED IN A CONDITION WHICH WILL PREVENT TRACKING OR DIRECT FLOW OF MUD ONTO
STREETS. PERIODIC TOP DRESSING WITH STONE SILL BE NECESSARY; KEEP SOME HANDY.
5. ANY MATERIAL WHICH STILL MAKES IT ONTO THE ROAD MUST BE CLEANED UP IMMEDIATELY.
6. APPLICABLE AT ALL POINTS OF INGRESS & EGRESS UNTIL SITE IS STABILIZED, FREQUENT CHECKS OF
THE DEVICE AND TIMELY MAINTENANCE MUST BE PROVIDED.
MAINTENANCE
1. MAINTAIN THE GRAVEL PAD IN A CONDITION TO PREVENT MUD OR SEDIMENT FROM LEAVING THE
CONSTRUCTION SITE. THIS MAY REQUIRE PERIODIC TOP DRESSING WITH 2-INCH STONE.
2. AFTER EACH RAINFALL, INSPECT ANY STRUCTURE USED TO TRAP SEDIMENT AND CLEAN IT OUT AS
NECESSARY.
3. IMMEDIATELY REMOVE ALL OBJECTIONABLE MATERIALS SPILLED, WASHED, OR TRACKED ONTO PUBLIC
ROADWAYS.
TEMPORARY CONSTRUCTION ENTRANCE/ EXIT
N.T.S.
PROVIDE HIGH STRENGTH DOUBLE
STITCHED J TYPE SEAMS SEWN IN SPOUT
HIGH STRENGTH
STRAPPING FOR
HOLDING HOSE
IN PLACE
15' HEAVY DUTY WATER FLOW
DIRTBAG 55 FROM PUMP
OR EQUAL
OPENING TO
ACCOMMODATE UP TO
4" DISCHARGE HOSE
15'
r-
AGGREGATE UNDERLAYMENT
(3" THICK NCDOT NO. 57
STONE)
NOTES
1. THE DEWATERING BAG SHALL BE MADE OF NON -WOVEN GEOTEXTILE WITH A MIN. SURFACE AREA OF 225
SQUARE FEET PER SIDE.
2. ALL STRUCTURAL SEAMS SHALL BE SEWN WITH A DOUBLE STITCH USING A DOUBLE NEEDLE MACHINE
WITH HIGH STRENGTH THREAD.
3. THE SEAM STRENGTH SHALL WITHSTAND 100 LB/IN USING ASTM D-4884 TEST METHOD.
4. THE GEOTEXTILE FABRIC SHALL BE 10 OZ NON -WOVEN FABRIC.
5. DISCHARGE FROM THE DEWATERING BAG SHALL BE DIRECTED SUCH THAT PRE -DISTURBANCE HYDROLOGY
IS NOT CHANGED.
6. TRANSPORT AND PLACE DEWATERING BAGS WITH CARE TO PREVENT RIPPING OR TEARING THE FABRIC.
7. AVOID INSTALLING ON STEEP SLOPES AS THE BAG MAY ROLL, CAUSING FAILURE.
8. INSERT THE DISCHARGE HOSE A MINIMUM OF 1-FOOT INSIDE THE DEWATERING BAG. DO NOT INSERT
MORE THAN ONE DISCHARGE HOSE INTO THE DEWATERING BAG.
9. AVOID USE OF EXCESSIVE FLOW RATES OR OVERFILLING THE DEWATERING BAG. THIS MAY CAUSE THE BAG
TO RUPTURE OR CAUSE FAILURE TO THE HOSE TO BAG CONNECTION.
MAINTENANCE
1. FOLLOW ALL MANUFACTURER RECOMMENDATIONS FOR INSPECTION AND MAINTENANCE GUIDELINES. REPLACE
DEWATERING BAGS WHEN TRAPPED SEDIMENT HAS ACCUMULATED TO 50% OF THE BAG CAPACITY OR IN
ACCORDANCE WITH THE MANUFACTURER'S RECOMMENDATIONS.
2. DEWATERING BAGS ARE FULL WHEN THEY NO LONGER EFFICIENTLY FILTER SEDIMENT OR PASS WATER AT A
REASONABLE RATE.
DIRT BAG DETAIL
N.T.S.
MIN. 10 GA.
LINE WIRES
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FRONT VIEW
_EL POST
'OVEN WIRE FABRIC
WARNING SIGN
ORANGE, UV RESISTANT
HIGH -TENSILE
STRENGTH POLY
BARRICADE FABRIC
(TYPICAL)
0
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1Ni 3
GRADE
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SIDE VIEW
MIN. 12-1/2 GA.
INTERMEDIATE WIRES
�- GRADE
�40 �T
M�
TREE PROTECTION AREA
T
a
„
18
DO NOT ENTER
2
WARNING SIGN DETAIL
40"�
M\
AREA PARA PROTECCION
18°
n
DE LOS ARBOLES
PROHIBIDO ENTRAR
WARNING SIGN DETAIL
NOTES
1. INSTALL FENCING AS SHOWN ON THESE PLANS.
2. WARNING SIGNS TO BE MADE OF DURABLE, WEATHERPROOF MATERIAL. LETTERS TO BE 3" HIGH MINIMUM, CLEARLY
LEGIBLE AND SPACED AS DETAILED.
3. SIGNS SHALL BE PLACED AT 50' MAXIMUM INTERVALS. PLACE A SIGN AT EACH END OF LINEAR TREE PROTECTION AND
50' ON CENTER THEREAFTER.
4. FOR TREE PROTECTION AREAS LESS THAN 200' IN PERIMETER, PROVIDE NO LESS THAN ONE SIGN PER PROTECTION
AREA. ATTACH SIGNS SECURELY TO FENCE POSTS AND FABRIC. ADDITIONAL SIGNS MAY BE REQUIRED BY GOVERNMENT
ENTITIES BASED ON ACTUAL FIELD CONDITIONS.
5. IN SPITE OF PRECAUTIONS, SOME DAMAGE TO PROTECTED TREES MAY OCCUR. IN SUCH CASES REPAIR ANY DAMAGE TO
THE CROWN, TRUNK OR ROOT SYSTEM IMMEDIATELY. REFER TO THE EROSION AND SEDIMENT CONTROL PLANNING AND
DESIGN MANUAL CHAPTER 6 SECTIONS 6.056 AND 6.05C FOR DIRECTIONS ON WOUND REPAIR AND PRUNING OF
DAMAGED TREES.
6. MAINTAIN TREE PROTECTION FENCE THROUGHOUT DURATION OF PROJECT.
MAINTENANCE
1. INSPECT TREE PROTECTION FENCES AT LEAST ONCE A WEEK. MAKE ANY REQUIRED REPAIRS IMMEDIATELY.
2. SHOULD THE FABRIC OF A FENCE COLLAPSE, TEAR, DECOMPOSE OR BECOME INEFFECTIVE, REPLACE IT PROMPTLY.
TREE PROTECTION FENCE
N.T.S.
NOTES:
1. EXCAVATION SHALL BE PERFORMED IN ONLY DRY SECTIONS OF CHANNEL UNLESS
DRAINAGE AREA EXCEEDS 6 SQUARE MILES.
2. IMPERVIOUS DIKES SHOULD BE USED TO ISOLATE WORK AREAS FROM STREAM FLOW.
3. THE CONTRACTOR SHALL NOT DISTURB MORE AREA THAN CAN BE STABILIZED IN ONE
WORKING DAY.
4. EACH PUMP AROUND PUMP SHOULD ADEQUATELY CONVEY BASE FLOW VOLUMES.
5. PUMP AROUND OPERATIONS SHOULD NOT BE UNDERTAKEN IF SIGNIFICANT RAINFALL IS
FORECAST IN THE CONSTRUCTION PERIOD.
SEQUENCE OF CONSTRUCTION FOR TYPICAL PUMP AROUND
1. INSTALL SPECIAL STILLING BASINS AT THE DOWNSTREAM END OF THE DESIGNATED
PROJECT WORKING AREA.
2. THE CONTRACTOR WILL INSTALL THE PUMP AROUND PUMP AND THE TEMPORARY PIPING
THAT WILL CONVEY THE BASE FLOW FROM UPSTREAM OF THE WORK SITE TO THE DIRT
BAG.
3. INSTALL UPSTREAM IMPERVIOUS DIKE AND BEGIN PUMPING OPERATIONS FOR STREAM
DIVERSION.
4. INSTALL THE DOWNSTREAM IMPERVIOUS DIKE AND PUMPING APPARATUS IF NEEDED TO
DEWATER THE ENTRAPPED AREA. THE PUMP AND HOSE FOR THIS PURPOSE SHALL BE OF
SUFFICIENT SIZE TO DEWATER THE WORK AREA. THIS WATER WILL ALSO FLOW INTO A
DIRT BAG.
5. THE CONTRACTOR WILL PERFORM STREAM STABILIZATION WORK IN ACCORDANCE WITH THE
PLAN AND FOLLOWING THE GENERAL CONSTRUCTION SEQUENCE.
6. ANY EXCAVATED MATERIAL CONTAINING MANMADE MATERIAL IS NOT SUITABLE MATERIAL
FOR CHANNEL FILL AND MUST BE DISPOSED OF OFFSITE UNLESS OTHERWISE DIRECTED BY
7. THE CONTRACTOR WILL EXCAVATE ANY ACCUMULATED SEDIMENT AND DEWATER BEFORE
REMOVAL OF THE IMPERVIOUS DIKE. REMOVE IMPERVIOUS DIKES, PUMPS, AND TEMPORARY
FLEXIBLE HOSE/PIPING STARTING WITH THE DOWNSTREAM DIKE FIRST.
8. CONTRACTOR SHALL NOTIFY ENGINEER UPON DISCOVERY OF ANY CONSTRAINS DISCOVERED
IN THE CONSTRUCTION OF THE PROPOSED STRUCTURE PLACEMENT AND ADJUSTMENTS
CAN BE MADE ONSITE
9. ONCE THE WORKING AREA IS COMPLETED, REMOVE THE DIRT BAGS AND STABILIZE
DISTURBED AREAS TO SPECIFICATIONS AS SHOWN ON PLANS.
MIN. 10 GA.
LINE WIRES
8' MAX.
VARIABLE AS DIRECTED BY THE ENGINEER
IIVJ 1 HLLLU I U JLUUIVU
- WIRE FROM TOP
I
�,�I FRONT VIEW
NOTES
1. USE SILT FENCE ONLY WHEN DRAINAGE AREA
DOES NOT EXCEED 1/4 ACRE AND NEVER IN
AREAS OF CONCENTRATED FLOW
2. END OF SILT FENCE NEEDS TO BE TURNED
UPHILL.
IMPERVIOUS DIKE
(LOCATE AS DIRECTED
AT THE TIME OF
CONSTRUCTION)
TEMPORARY PIPING
TEMPORARY SPLASH PAD
(SEE DETAIL, LOCATE (AS
DIRECTED AT THE TIME OF
CONSTRUCTION)
STEEL POST
WOVEN WIRE FABRIC
SILT FENCE GEOTEXTILE FABRIC
H
0j 3 FILL SLOPE
FOR REPAIR OF SILT
`V ? FENCE FAILURES, USE
No. 57 WASHED STONE.
Ni-GRADE FOR ANCHOR WHEN SILT
FENCE IS PROTECTING
CATCH BASIN.
C
N
FILTER OF 1" DIA.
2-1/2 GA.
dEDIATE
GRADE
- 6" MIN. COVER
OVER SKIRT
ANCHOR SKIRT AS
DIRECTED BY ENGINEER
FILTER FABRIC
PLAN VIEW
STEEL FENCE POST
WIRE FENCE
HARDWARE CLOTH
FILTER OF 1" DIA. WASHED STONE
SECTION
MAINTENANCE
1. INSPECT SEDIMENT FENCES AT LEAST ONCE A WEEK AND AFTER EACH RAINFALL. MAKE ANY REQUIRED
REPAIRS IMMEDIATELY
2. SHOULD THE FABRIC OF A SEDIMENT FENCE COLLAPSE, TEAR, DECOMPOSE OR BECOME INEFFECTIVE,
REPLACE IT PROMPTLY.
3. 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.
4. REMOVE ALL FENCING MATERIALS AND UNSTABLE SEDIMENT DEPOSITS AND BRING THE AREA TO GRADE
AND STABILIZE IT AFTER THE CONTRIBUTING DRAINAGE AREA HAS BEEN PROPERLY STABILIZED.
PUMP AROUND PUMP
PLAN
NOT TO SCALE
FILTER FABRIC FOR -
DRAINAGE (NON -WOVEN)
COMPACTED FILL
LINED WITH STONE
(RE -USE FROM SITE
STABILIZATION) /
WORKING
AREA
TYPICAL PUMP AROUND SETUP
N.T.S.
IMPERVIOUS SHEET
PROFILE VIEW
SILT FENCE
N.T.S.
DIRT BAG SEDIMENT REMOVAL
DEVICE (SEE DETAIL)
DEWATERING PUMP
TEMPORARY
FLEXIBLE 0
HOSE 7-
Z
G�
EXISTING
CHANNEL v
BASEFLOW
IMPERVIOUS DIKE DETAIL
NOT TO SCALE
IMPERVIOUS DIKE
(LOCATE AS
DIRECTED AT
THE TIME OF
CONSTRUCTION)
u
FRONT VIEW
LT FENCE
FILTER FABRIC ON
GROUND BURY WIRE
FENCE AND
HARDWARE CLOTH
�� . ...� ENCE, FILTER
FABRIC, AND HARDWARE
CLOTH IN TRENCH
MAINTENANCE
1. REMOVE SEDIMENT WHEN HALF OF STONE OUTLET IS COVERED.
2. REPLACE STONE AS NEEDED TO ENSURE DEWATERING.
3. INSPECT SEDIMENT FENCES AT LEAST ONCE A WEEK AND AFTER EACH RAINFALL. MAKE ANY REQUIRED
REPAIRS IMMEDIATELY
4. SHOULD THE FABRIC OF A SEDIMENT FENCE COLLAPSE, TEAR, DECOMPOSE OR BECOME INEFFECTIVE,
REPLACE IT PROMPTLY.
5. 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.
6. REMOVE ALL FENCING MATERIALS AND UNSTABLE SEDIMENT DEPOSITS AND BRING THE AREA TO GRADE
AND STABILIZE IT AFTER THE CONTRIBUTING DRAINAGE AREA HAS BEEN PROPERLY STABILIZED.
EXISTING GROUND
PUMP HOSE
APPROPRIATE SIZE RIP RAP PAD
(USE EXISTING RIP -RAP FROM
ONSITE STABILIZATION)
FILTER FABRIC
FOR DRAINAGE
(NON -WOVEN)
SILT FENCE GRAVEL OUTLET
N.T.S.
15 M1N
SEDIMENT FILTER
BAG
NOTES:
AT THE DESIGNER'S DISCRETION, ALTERNATE DEWATERING
STRUCTURES MAY BE USED (i.e. SEDIMENT TANKS, FILTER BOX,
STRAW BALE/SILT FENCE PIT). HOWEVER, REGARDLESS OF THE
DEWATERING STRUCTURE USED, ALL MUST BE SIZED AND
OPERATE TO ALLOW ALL PUMPED WATER TO BE FILTERED TO
PREVENT SEDIMENTS FROM ESCAPING THE SITE.
TEMPORARY DEWATERING STRUCTURE DETAIL
N.T.S.
STREAM BANK
STREAM
'J
McADAMS
The John R. McAdams Company, Inc.
2905 Meridian Parkway
Durham, NC 27713
phone [phone]
fax [phone]
license number: C-0293
www.mcadamsco.com
CLIENT
CITY OF DURHAM
101 CITY HALL PLAZA
DURHAM, NORTH CAROLINA 27701
919. 560. 4326
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REVISIONS
NO. DATE
PLAN INFORMATION
PROJECT NO.
DUR-18000
FILENAME
DUR18000-EC3
CHECKED BY
CMS
DRAWN BY
SMP
SCALE
NONE
DATE
7.09.2019
SHEET
EROSION CONTROL
DETAILS
EC-3
PRELIMINARY DRAWING - NOT RELEASED FOR CONSTRUCTION