C401 Site Details (1)

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FOUNDATION
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BY OTHERS
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24'-0" ARCH SPAN
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HEADWALL
BY OTHERS
BRIDGE PLAN
T/GRADE
3'-
CROSS SECTION A -A
PROTECT WEIR WITH FILTER
FABRIC AND RIPRAP
NOTES:
• MEASUREMENTS ARE TO THE INSIDE
CRESTS OF THE CORRUGATION
• DIMENSIONS ARE SUBJECT TO
MANUFACTURING TOLERANCES
*PRELIMINARY FOUNDATION DESIGN NOTES:
• PRELIMINARY SIZING BASED ON
ASSUMED 8000 PSF BEARING CAPACITY,
4'-1" OF COVER, AND CAT 773 LIVE
LOADING
• SCOUR NOT CONSIDERED IN THIS
PRELIMINARY DESIGN
• FINAL DESIGN MAY VARY
CONTECH METAL ARCH BRIDGE CULVERT
NTS
1 I
ROPE
12'
7f`FILTER FABRIC
ref
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NOTES i
1. USE FOR DRAINAGE AREAS NOT EXCEEDIN FIVE
2. EARTH BERM SHALL HE STABIUZED Wq'SEEDING ACCORDING
TOWN SPECIFICATIONS.
DESIGN OF
SPILLWAYS
DRAINAGE AREA
WEIR LENGTH 1
(ACRES)
(FT)
1
4.0
2
6.0
3
8.0
4
10.0
5
12.0
1DIMENSIONS SHOWN ARE MINIMUM
FILTER FABRIC
BAFFLES WITH METAL T—POST,
WOVEN WIRE FABRIC BACKING
AND COIR FIBER NETTING
I
LENGTH
SKIMMER BASIN CROSS SECTION
i UNE WEIR WITH RIPRAP
WEIR CROSS SECTION
DITCH AND BURY
FILTER FABRIC EDGE
(MIN. 12' OF FABRIC)
MAINTENANCE
• INSPECT TEMPORARY SKIMMER BASIN AND EMPTY SKIMMER OF ALL DEBRIS AFTER EACH PERIOD OF SIGNIFICANT RAINFALL. REMOVE
SEDIMENT AND RESTORE BASIN TO ITS ORIGINAL DIMENSIONS WHEN THE SEDIMENT HAS ACCUMULATED TO ONE-HALF THE DESIGN
DEPTH OF THE BASIN. PLACE THE SEDIMENT THAT IS REMOVED IN A DESIGNATED DISPOSAL AREA. REPAIR BAFFLES.
• CHECK THE STRUCTURE FOR DAMAGE FROM EROSION OR PIPING. PERIODICALLY CHECK THE DEPTH OF THE SPILLWAY TO ENSURE IT
IS A MINIMUM OF 1.5 FEET BELOW THE LOW POINT OF THE EMBANKMENT. IMMEDIATELY FILL ANY SETTLEMENT OF THE EMBANKMENT
TO SUGHTLY ABOVE DESIGN GRADE. ANY RIPRAP DISPLACED FROM THE SPILLWAY MUST BE REPLACED IMMEDIATELY.
• STABILIZE THE EMBANKMENT AND ALL DISTURBED AREAS ABOVE THE SEDIMENT POOL AND DOWNSTREAM FROM THE BASIN IMMEDIATELY
AFTER CONSTRUCTION WITH SEEDING AND MATTING, AS NEEDED.
z:) TEMPORARY SKIMMER BASIN (2 OF
IN J NTS
NOTE:
THE SETTLING PONDS WILL BE REMOVED WHEN THE
RECLAMATION PLAN IS COMPLETED IN THE FIELD.
1GO' WIDTH
1�
TOP OF BERM
WATER SURFACE ELEVATION m 595 FT
ELEVATION = 594 FT
TAILING POND F1
10 too' utDm
I I TOP OF BERM
ELE 01 591 FT
t- WATER SURFACE _n
2. ti T
BOTTOM
ELEVATION
TAIUNG POND J2
NME
EACH TATUNG POND SHALL HAVE A MINIMUM FREEBOARD OF
1.0 FEET AND SHALL HAVE DIMENSIONS AT THE SURFACE OF
500 FEET LONG BY 100 FEET WIDE.
THE SLOPES OF THE OUTER SIDES OF THE TAIUNG PONDS
WILL VARY DEPENDING ON THE SURROUNDING SURFACE.
TAILING POND DETAIL
MS
BAFFLES WITH METAL T-POST, WOVEN WIRE
FABRIC BACKING AND COIR FIBER NETTING -
SEE BAFFLE DETAIL
(THIS SHEET)
BOTTOM ANCHORED
WITH STAPLES
SKIMMER WITH RETRIEVAL ROPE
TOP OF
DAM 5'-0*,
STONE APRON
WITH FILTER FABRIC
PERSPECTIVE VIEW
1 ) TEMPORARY SKIMMER BASIN (1 OF
401j NTS
J TOTES
1. SKIMMER IS TO BE A SURFACE DEWATERING DEVICE
SUCH AS BMP SKIMMER OR APPROVED DEVICE.
2. SKIMMER SHOULD RISE TO LEVEL OF WEIR HEIGHT IN
TEMPORARY BASIN OR TO RISER INLET.
3. ROPE ATTACHED TO SKIMMER TO HELP KEEP CLEAN.
4. SIZING OF ORIFICE TO ALLOW FOR DEWATERING TIME
OF 24-72 HOURS.
SCHEDULE
RIGID FLEXIBLE JOINT
OUTLET END: CONNECTION
TO OUTLET PIPE OR RISER —
E
�O
)PE I L
NOT INCLUDED WITH SKIMMER SUPPLIED BY USER.
I
© 2019 LaBelia Associates
ALAMANCE
AGGREGATES, LU
SKIMMER DETAIL Mr. Chad Threatt, VP
NTS
N=.
1. DRIVE STEEL FENCE POST AT LEAST 18
INCHES INTO SOLID GROUND.
2. WOOD POST ARE NOT ACCEPTABLE,
3. DIRECT WATER TO TOP OF BASIN USING
STABILIZED DITCH, SLOPE DRAIN PIPE
OR OTHER APPROVED METHOD.
BAFFLE DETAIL
CORR FIBER MATTING.
SECURE WITH NYLON
ZIP TES.
36"
ZIP TIES -
FLOW DIRECTION STAPLES
WOVEN WIRE FABRIC.
SECURE WITH NYLON ZIP
T-POST
I
I
_
NO:
DATE:
DESCRIPTION:
REVISIONS
PROJECT NUMBER:
2190335
DRAWN BY:
KCG/ATC
REVIEWED BY:
PAS
ISSUED FOR:
CONSTRUCTION
DATE:
7/18/19
DRAWING NAME: