HomeMy WebLinkAboutsp NBHES pg 6copyright 2017 Hite associates
Tj,
o�'OFo�
RIPRAP HEADWALL, 1'-0„ MIN.
HEIGHT FROM ROADSIDE
Z5
SHOULDER
K
lFES
PPE
l
2
-r
DIRECTION �LD�
�
SPA`J
OF FLOW
�F.
/ - l
i
NOTES:
i
FILTER BERM � � �:>�`r � � h„ � � 1. WHEN USED IN COMBINATION WITH AN EXCAVATED SEDIMENT STORAGE
NC DOT *5 OR *57 AREA TO SERVE AS A TEMPORARY SEDIMENT TRAP,THE DESIGN CRITERIA FOR
a 1 �
WASHED STONE
r $ F "04; -z _ i, 1 TEMPORARY SEDIMENT TRAPS MUST BE SATISFIED. THE MAXIMUM DRAINAGE
AREA SHOULD BE 5 ACRES, AND 36DO CUBIC FEET OF SEDIMENT STORAGE
- =*� PER ACRE OF DISTURBED DRAINAGE AREA SHOULD BE PROVIDED.
CLASS "B" STONE
RIPRAP 2. THE MINIMUM STONE HEIGHT SHOULD BE 2 FEET, WITH SIDE SLOPES NO
STEEPER THAN
2:1. THE STONE "HORSESHOE" AROUND THE PIPE INLET
SHOULD BE CONSTRUCTED OF CLASS B OR CLASS I RIPRAP, WITH A MINIMUM
CREST WIDTH OF 3 FEET. THE OUTSIDE FACE OF THE RIPRAP SHOULD BE
COVED WITH A 12 -INCH THICK LAYER OF #5 OR #57 WASHED STONE.
3. IN PREPARING PLANS FOR ROCK PIPE INLET PROTECTION, IT IS IMPORTANT TO
- PROTECT THE EMBANKMENT OVER THE PIPE FROM OVERTOPPING. THE TOP
O¢F F� OF THE STONE SHOULD BE A MINIMUM OF 1 FOOT BELOW THE TOP OF THE FILL
O OVER THE PIPE. THE STONE SHOULD TIE INTO THE FILL ON BOTH SIDES OF THE
PIPE. THE INSIDE TOE OF THE STONE SHOULD BE NO CLOSER THAN 2 FEET
FILTER BERM FROM THE CULVERT OPENING TO ALLOW PASSAGE OF HIGH FLOWS.
NC DOT *5 OR *57
WASHED STONE 4. THE SEDIMENT STORAGE AREA SHOULD BE EXCAVATED UPSTREAM OF THE
ROCK PIPE INLET PROTECTION, WITH A MINIMUM DEPTH OF 18 INCHES BELOW
12" 3'-0" CLASS "B" STONE GRADE.
RIPRAP
FINISH GARDE `'-
RIPRAP HEADWALL, 1'-0" MIN.
HEIGHT FROM ROADSIDE
' SHOULDER
' { ` FES PIPE -
-.; ..
,FF PI AN
DIRECTION N
OF FLOW
"77-7
•
Will
• ' • • . •
INSTALL T -POST TO ANCHOR
BAFFLE TO SIDE OF BASIN AND
SECURE TO VERTICAL POST
WITH PLASTIC TIES AT POSTS
AND ON WIRE EVERY 12"°I MM.
9 GAUGE MIN. HIGH - VARIABLE DEPTH
TENSION WIRE STRAND m i ,1I`"
- SHALL BE SECURED
TO POST TO SUPPORT
BAFFLE MATERIAL�i
BAFFLE MATERIAL SECURE BOTTOM OF BAFFLE
CROSS SECTION TO GROUND WITH 12" STAPLES
AT 12" MAXIMUM SPACING BAFFLE MATERIAL
11 GAUGE
LANDSCAPE
STAPLE
BAFFLE MATERIAL SHALL BE SECURED — TO THE BOTTOM AND SIDES OF BASIN I_=�
USING 12" LANDSCAPE STAPLES
NOTE: INSTALL THREE (3) COIR FIBER S7FEL POST
BAFFLES IN SILT BASINS AND
SEDIMENT DAMS AT DRAINAGE :SECTION VIEW AT OPENING
OUTLETS WITH A SPACING OF Y4
THE BASIN LENGTH. TWO (2) COIR
FIBER BAFFLES CAN BE INSTALLED IN COIR FIBER BAFFLE
SILT BASINS AND DAMS LESS THAN
20 FT, IN LENGTH WITH A SPACING NOT TO SCALE MG NO. EC -25A
OF b THE BASIN LENGTH.
DRAPE BAFFLE MATERIAL
OVER TENSION WIRE
ANDSECURE WITH PLASTIC
WIRE TIES AT 12" O.C.
11 GAUGE X 12" LONG
LANDSCAPING STAKES
SPACED AT 12" O.C. MIN.
SECTION
BAFFLE INSTALLATION
DRAPE BAFFLE MATERIAL
OVER TENSION WIRE
ANDSECURE WITH PLASTIC
WIRE TIES AT 12" O.C.
11 GAUGE X 12" LONG
LANDSCAPING STAKES
SPACED AT 12" O.C. MIN.
9 GAUGE TENSION WIRE
SECURED TO POST
STEEL POST BURIED TO
/—A DEPTH OF 2'-0" MIN.
r` FLOW
STRAP - - -
FLOW J
FILTER BAG FLOW
}
FLOW
PUMP DISCHARGE HOSE
12 IN MIN.
MULCH, LEAF/WOOD COMPOST,
WOODCHIPS,
STRAP PLAN VIEW SAND, OR. STRAW BALES
SLOPE
_OW 5% MAX.
ELEVATION FILTER BAG 8 IN MIN.
CONSTRUCTION SPECIFICATIONS
L TIGHTLY SEAL SLEEVE AROUND THE PUMP DISCHARGE HOSE WITH A STRAP OR SIMILAR DEVICE.
2. PLACE FILTER BAG ON SUITABLE BASE (E.G., MULCH, LEAF/WOOD COMPOST, WOODCHIPS, SAND, OR
STRAW 0 A LEVEL OR 51 MAXIMUM SLOPING SURFACE. DISCHARGE TO A
TR BALES) LOCATED A N
STABILIZED AREA. A.EXTENDBASE A MINIMUM OF 12" FRM EDGES OF BAG.
3. CONTROL PUMPING RATE TO PREVENT EXCESSIVE PRESSURE WITHIN THE FILTER BAG IN ACCORDANCE
WITH THE MANUFACTURER RECOMMENDATIONS. AS THE BAG FILLS WITH SEDIMENT, REDUCE PUMPING
RATE.
4. REMOVE AND PROPERLY DISPOSE OF FILTER BAG UPON COMPLETION OF PUMPING OPERATIONS OR
AFTER BAG HAS REACHED CAPACITY,WHICHEVER OCCURS FIRST. SPREAD THE DEWATERED SEDIMENT
FROM THE BAG IN AN APPROVED UPLAND AREA AND STABILIZE WITH SEED AND MULCH BY THE END
OF THE WORK DAY. RESTORE THE SURFACE AREA BENEATH THE BAT TO ORIGINAL CONDITION. UPON
REMOVAL OF THE DEVICE.
5. USE NONWOVEN V GEOTEXTILE WITH DOUBLE STITCHED SEAMS USING HIGH STRENGTH THREAD. SIZE
SLEAVE TO ACCOMMODATE A MAXIMUM 4 INCH DIAMETER PUMP DISCHARGE HOSE. THE BAG MUST BE
MANUFACTURED FROM A NONWOVEN GEOTEXTILE THAT MEETS OR EXCEEDS MINIMUM AVERAGE ROLL
VALUES (MARV) FOR THE FOLLOWING:
GRAB TENSILE 250 LB ASTM D-4632
PUNCTURE 150 LB ASTM D-4833
FLOW RATE 70 GAL/MIN/FT 2 ASTM D-4491
PERMITTIVITY (SEC `1) 1.2 SEC -1 ASTM D-4491
UV RESISTANCE 70% STRENGTH @ 500 HOURS ASTM D-4355
APPARENT OPENING SIZE (AOS) 0.15-0.15 MM ASTM D-4751
SEAM STRENGTH 90% ASTM D-4632
6. REPLACE FILTER BAG IF BAG CLOGS OR HAS RIPS, TEARS OR PUNCTURES. DURING OPERATION KEEP
CONNECTION BETWEEN PUMP HOSE AND FILTER BAG WATER TIGHT. REPLACE BEDDING IF IT BECOMES
DISPLACED.
303.6 FILTER BAG DETAIL
SCALE: NONE
cvunllco GEOTEXTILE
4' MIN.
SOIL STABILIZATION
GEOTEXTILE
— - — - — - — - — - — - — �--------------------------
1' MIN.
OF DITCH
CLASS B
STONE PAD
PLAN VIEW
RIGID
COUPLING
DAM
NOTES:
1. BAFFLE MATERIAL SHOULD BE SECURED AT THE BOTTOM AND SIDES USING STAPLES OWFRSION
OR BY TRENCHING AS FOR SILT FENCE.
2. MOST OF THE SEDIMENT WILL ACCUMULATE IN THE 1ST BAY, WHICH SHOULD BE
READILY ACCESSIBLE FOR MAINTENANCE.
ANCHOR TENSION 3. PROVIDE 3 BAFFLES (USE TWO IF LESS THAN 20 FEET IN LENGTH). PROVIDE 5
WITH T -POST OR BAFFLES FOR DRAINAGE AREAS GREATER THAN 10 ACRES.
POST AS REQUIRE 4. BAFFLE SHALL BE 700 G/M2 COIR EROSION BLANKET.
5: TOPS OF BAFFLES SHOULD BE 21NCHES LOWER THAN THE TOP OF THE BERMS
6. INSPECT BAFFLES FOR REPAIR ONCE A WEEK AND AFTER EACH RAINFALL
303.2 SEDIMENT BASIN BAFFLE INSTALLATION
SCALE: NONE
STAKE OR *10 REBAR POST
T MIN.
L
1' MAX>4� ��" 7�7,*�*��.
PLACE SEALANT .AROUND
BARRELL PIPE, 6" MIN.
MIN. WIDTH
W/ SKIMMER
EXIS
FILTER
EMERGENCY
SPILLWAY
10 MII PI ASTIC I INFR
NOTES: ISOMETRIC
1. ACTUAL LAYOUT TO BE DETERMINED IN FIELD.
2. THE "CONCREE WASHOUT" SHALL BE INSTALLED WITHIN
30 FEET OF THE TEMPORARY CONCRETE WASHOUT FACILITY.
3 PIT CAPACITY IS MINIMUM OF 6 CF PER 10 CY OF CONCRETE
4 CONTRACTOR TO COORDINATE WITH USAGE CONTRACTING OFFICER
FOR PROPER DISPOSAL OF CONCRETE.
/--6" HT. BLACK LETTERS
1' MIN.
UNCLASSIFIED
EARTH MATERIAL
SOIL STABILIZATION
GEOTEXTILE (18" MIN
OVERLAP)
NATURAL
GROUND
DIVERSION SWALE SECTION
STONE
X 24" PLYWOOD
NTED WHITE
BOLTS
44 WOOD
T
SECTION
LINER
=57 STONE
303,5 CONCRETE WASHOUT PIT d511) CD
SCALE: NONE
W j
PVC ORIFICE PIPE
W/ /Z" DIA HOLES
(3 ROWS - 8) ~-
END CAP W a
PVC TEE tz
PVC ELBOW -
(TYP) C to
to
0
o°
END CAP
PVC VENT PIPE
END CAP
ARM ASSEMBLY
PVC PIPE C
2:1 SIDE SLOPES LINED WITH 2:1 SIDE SLOPES LINED
UV RESISTANT TARP SEE PLAN VIEW FOR WIDTH WITH UV RESISTANT TARP
—I I N I _ X11-111=
ITi� I—ll— I—�IL�II
��I IL I —III=III— I �I I I 11—I I I— I1=111=11 X11=1TI���
=11TlII I�illllll=""
EMERGENCY SPILLWAY SECTION
PVC VENT PIPE
PVC TEE
W•Pr l.01111AILWA i
PVC ELBOW
(TYP)
WATER SURFACE
PIPE WITH
DIA HOLES
IOWS - 8)
ELY
ARM ASSEMBLY
PVC PIPE
MILE PIPE
BOTTOM SURFACE
END VIEW SIDE VIEW
NOTE: ALL PIPE PVC SCHEDULE 40
303.3 SKIMMER DEWATERING
SCALE: NONE
INLET ZONE
DIVERSION
SWALE
DEVICE
PVC VENT PIPE
PSC ELBOW
(1P) U
LLI Z
IL o ro
END CAP Z — ui y
0
PVC TEE. U O U roi
(9 Z H d v
Z'
N LL
Lu z 04
Z = Ln N N
(9 W w
W RW
j o
U
AVERAGE AREA'
WIDTH 'W" - L
AREA OF BASIN WATER
SURFACE AT TOP OF
PRINCIPLE SPILLWAY ELEVATION
PLAN VIEW (NTS)
IBANKMENT
:IMMER
=WATERING DEVICE
)UTLET PIPE
EMERGENCY
SPILLWAY
NOTES:
1. DEWATERING -ALLOW THE MAXIMUM
REASONABLE DETENTION PERIOD BEFORE
THE BASIN IS COMPLETELY DEWATERED
(AT LEAST 48 HOURS)
2 INFLOW RATE -REDUCE THE INFLOW
VELOCITY AND DIVERT ALL SEDIMENT -FREE
RUNOFF
303,1 SECTION @ TEMPORARY SEDIMENT BASIN
SCALE: NONE
L
ICU
N
@
C
Q
0/�
0
U
E
/
v/
L
W
0
W
4-1
:0z
C
rr0�
V
,
Avg
UJ
4-0
CUL
C
d
4
n�
MW
W
Z
w;
('r)
M
1
G
�T 10 MIL PLASTIC LINER
I ;'
N
I l
S
A+
}. q f
32 •�
M �S'4^4+`. { A
Z
`���"�'
+�,i�3`�k4�3 ^'FG' t'��,i"<*�'d"'�
�
E
W
M
t\
- -
-
C�
PLAN
Z
O
Z
�
303,5 CONCRETE WASHOUT PIT d511) CD
SCALE: NONE
W j
PVC ORIFICE PIPE
W/ /Z" DIA HOLES
(3 ROWS - 8) ~-
END CAP W a
PVC TEE tz
PVC ELBOW -
(TYP) C to
to
0
o°
END CAP
PVC VENT PIPE
END CAP
ARM ASSEMBLY
PVC PIPE C
2:1 SIDE SLOPES LINED WITH 2:1 SIDE SLOPES LINED
UV RESISTANT TARP SEE PLAN VIEW FOR WIDTH WITH UV RESISTANT TARP
—I I N I _ X11-111=
ITi� I—ll— I—�IL�II
��I IL I —III=III— I �I I I 11—I I I— I1=111=11 X11=1TI���
=11TlII I�illllll=""
EMERGENCY SPILLWAY SECTION
PVC VENT PIPE
PVC TEE
W•Pr l.01111AILWA i
PVC ELBOW
(TYP)
WATER SURFACE
PIPE WITH
DIA HOLES
IOWS - 8)
ELY
ARM ASSEMBLY
PVC PIPE
MILE PIPE
BOTTOM SURFACE
END VIEW SIDE VIEW
NOTE: ALL PIPE PVC SCHEDULE 40
303.3 SKIMMER DEWATERING
SCALE: NONE
INLET ZONE
DIVERSION
SWALE
DEVICE
PVC VENT PIPE
PSC ELBOW
(1P) U
LLI Z
IL o ro
END CAP Z — ui y
0
PVC TEE. U O U roi
(9 Z H d v
Z'
N LL
Lu z 04
Z = Ln N N
(9 W w
W RW
j o
U
AVERAGE AREA'
WIDTH 'W" - L
AREA OF BASIN WATER
SURFACE AT TOP OF
PRINCIPLE SPILLWAY ELEVATION
PLAN VIEW (NTS)
IBANKMENT
:IMMER
=WATERING DEVICE
)UTLET PIPE
EMERGENCY
SPILLWAY
NOTES:
1. DEWATERING -ALLOW THE MAXIMUM
REASONABLE DETENTION PERIOD BEFORE
THE BASIN IS COMPLETELY DEWATERED
(AT LEAST 48 HOURS)
2 INFLOW RATE -REDUCE THE INFLOW
VELOCITY AND DIVERT ALL SEDIMENT -FREE
RUNOFF
303,1 SECTION @ TEMPORARY SEDIMENT BASIN
SCALE: NONE
Project No.
21613
Date:
January2017
Drawing no.
C
L
ICU
N
@
C
Q
0/�
0
U
E
/
v/
L
W
0
W
4-1
:0z
C
rr0�
V
41
C
0
Avg
UJ
4-0
CUL
C
1
n�
MW
W
Z
Project No.
21613
Date:
January2017
Drawing no.
C