SW3220301_Plansheet 8 - Misc. Detail_20220420

First Chamber Second Chamber
259eb of surface area 250,6 of surface area Outlet zone
of surface area
Inlet zone
25% of surface area
S'Crest ffidth 14
I nflow
Structure
" mI,
Skimmer
Dewatering
Device
Riprap
or Slope Drain
Earthen embankment ' Emergency
N"
voith stabilized s,� Spillway
side slopes
Baffles
Figure 6.65a Porous baffles in a sediment basin. The flow is distributed eventy across the basin to
reduce flow rates and turbulence, resulting in greater sediment retention.
Extend 9 gaugewireto basin side or instalIT-post to anchor
Drape baffle material over wire strand and
secure with plastic ties at posts and onwire every 12* baffle to side of basin ands wire to vertical post
4'Max. --P�
I I
9GaugeMinHiqh ------ o0` T
Tension Wte Strand 3WK*
shall Be Secured
To Post To Support
&Affle filaterial - R-W
012110EM
If the temporary sediment basin will be
converted to a permanent stormwater basin
of greater depth, the baffle height should be
based on the pool depth during use as a
I
temporary sediment basin.
Ir
V6 'glam1 mg
Baffle hiaterial
11 Gauge
Landscaping Staple
I_- J
'K
i� Steel Post
2'-O'Depth
11-ri
Baffle hiaterial should be secured to the bottom
and sides of basin using 12'fan dscape staples
WATER ENTRY UNIT
GENERAL NOTES:
WITHTRASH SCREEN
I'
PROPER DESIGN MUST BE COMPLETED TO MINIMIZE PIPING AROUND DISCHARGE PIPE.
21
PROPER ORIF CE OPENING MUST BE SELECTED TO ENSURE POND DRAINS IN CORRECT
AMOUNT OFTIME. MODIFICATIONS MAYBE REQUIRED IF FIELD CONDITIONS WARRANT A
CHANGE
3.
EMBANKMENT MUST BECOMPACTED TO DESIGN SPECIFICATIONS,
r
4.
EMERGENCY SPILLWAY MUST BE CORRECTLY SIZED AND EROSION PROTECTION
INSTALLED.
5.
EROSION PROTECTION MUST BE INSTALLED ALONG THE EMBANKMENT AND AT THE
ORIFICE OPENING INSIDE THE
ORIFICE
DISCHARGE END OF THE PIPE
ONTAL TUBE WITH A
S.
INSPECT SYSTEM REGULARLY TO ENSURE IT IS FUNCTIONING IN A CORRECT MANNER.
CONSTANT HYDRAULIC HEAD
7.
EIGHT SIZES OF SKIMMERS ARE AVAILABLE, REFER TO THE FLOW SHEET, CUT SHEET, AND
INSTRUCTIONS ON WEB SITE FOR EACH SIZE,
SCHEDULE 40 PVC, PIPE
(BARREL OR ARM)
FLEXIBLE HOSE
NO
POTENTIAL FOR PIPING CAN
OCCUR. PROPER DESIGN TO
MINIMIZE DISCHARGE AROUND
PIPE MUST OCCUR.
WATER ENTRY UNIT
THEN EMBANKMENT
EMERGENCY SPILLWAY
SCHEDULE 40 PVC
(BARREL OR
FLEYJBLEHOSE ---i
PVC
V, It
i40ffin a&-a-M
a
0 MIN M 1 %1101 11Y.". M.
END VIEW SIDE MEW MAINTAIN DEPRESSION TO
DISCHARGE PIPE MINIMIZE CHANCE OF SKIMMER
SCHEDULE40 (NO SCALE) BECOMING STUCK
DRAWN BY T. R. EVANS I(VID
J.W.FAIRCLOTH&SON WC.
WWW.FAjRCL0niSyjMMMC0M
FAIRCLOTH SKIMMER DISCHARGE SYSTEM WITH EMBANKMENT TELEPHONE:
(919) 73ZI244
FAX: [phone]
EMAIL: WARRENDFAIRCLOTHSKJMMEP-COM
(Ref. Full Detail Sht-5)
4" CONCRETE 1-011
COVER iv x "n SKIMMER
OPENING
3 SIDES)
559.30
3" Threaded PVC*
. . . . . . . . . . . . . . .
and hamberto be constructe
C9
during conversion to final SCM
15"HDPE
PIPE
555.5 Basin Bottom( 555.5 .
g
<
*3" ThreadedV to be to be 6" PVC Coupling and cap for sand
caAped as Emergency Drain for filter's 6" PVC underdrain be -in
final SCM.
EROSION CONTROL PHASE MODIFICATION OF
iSCM CONCRETE OUTLET STRUCTURE (NTS)
I RA5, it 1iP%CK­­,
1-4
lZ
_7
x
RMUR E L
4 PIPE
j +
1
V
8 Y/
141111 , 0 IM] 0 N 3 LOCK SECTIONAL VIEW cut -oil, StisBULED
I It 1:114 01 COL VUR OUILH
2"DELP
REFERENCE SHEET 5 FOR
CUT-OFF TRENCH SIZING WITHI
NOTES rMMMOMI'Mr-11 0%..-IVI L11V11 I
1. SEED AND PU%CE MATTING FOR EROSION CONTROL ON INTERIOR AND EXTERIOR SIDESLOPES.
2. INST-%LL A MINIMUM OF 3 COIR FIBER BAFFLES IN ACCORDANCE WITH PRACTICE STANDARD 6,65.
3. INSTALL SKIM IVER AND COUPLING TO RISER STRUCTURE OR DIRECTLY INTO EMBANKMENT I FT. FROM BOTTOM, OF BASIN.
4. THE ARM, PIPESH41.1. 144VEA N',IN IMUM LENGTH OF G FT, BETWEEN THE SKIMMERAND COUPLING. E
2.5" Faircloth SkimmerO Surface Drain Cut Sheet
J. W. Faircloth & Son, Inc.
www.FairclothSkimmer.com
RIN11"ISTIT-1741IT07. M,
4" Sch 40
coupling
connection
IF
1 1/2" Vent
with Green tip
2 1/2" pvc float
1 1/2" Sch 40 SOLID pvc;
barrel or "arm"
SUPPLIED BY USER 3
I. RGERSIRLICTURE
SKI M-ME It (SVE lb'i It, I
STEM POS IS [QUAN II I YMUL)
UNA 1101, N K N04 E N 1
ST 01IE RGY
PLASI K' SLOPE MW N N PE
4 L k No
DISSiPMOR
(Plt;ac I ICESIANDPARD 6321
GWIEXULELINING
IEMPORARYOR
PERMPNO41 MICH Q0
L Y S P I L 014%Y
MERG E
(PRPC'IlCE STANDARD 6.651 SIC* CPAO­j
PLAN VIEW
6 M7 7A L P C 57
-ERENCE SHEET 5
PERMANENT RISER
RUCTURE DETAIL 10P 01. EM8AJ1JK%01EN1­-­,N \
111=111IMiiii
IN
ww
CiAss 115 101114111 ON
suspending
horizontal intake 5
29,,2
29,,2
IVA
Patent#: 5,820,751
Orifice PLATE for inlet
A
hose, ss clamps 2 1/2" inlet 2.5" HEAD [distance
2" threaded male fitting extension 4 from center of
on outlet end orificefirilet to water
surface
1. Skimmer can be attached to a straight 4" sch 40 pipe through the dam but the pipe may need 'to be
anchored to the bottom at the connection so it is secure. Coupling can be removed and hose attached t
.outlet using the threaded 2" fitting. Typical methods used: a) a metal structure with a steel stub out
welded on the side at the bottom with a 2" threaded coupling or reducer(s); b) a concrete structure with
hole or orifice at the bottom - use a steel plate with a hole cutin it and coupling welded to it that will fit
,over the hole in the concrete and bolted to the structure with sealant; or c) grout a 4" pvc pipe in a hole i
the concrete toonnect the skimmer.
2. Dimensions are approximate, not intended as plans for construction.
3. Barrel (solid, not foam core pipe) should be 1.4 times the depth of water with a minimum length of 6'
so the inlet can be pulled to the side for maintenance. If more than 8' long weight may have to be added
to inlet to counter the increased buoyancy.
Orifice/inlet tapers down from 2 1/2" maximum inlet to a 11/2" barrel and hose., Barrel is smaller to redu
buoyancy and tendency to lift inlet but is sufficient for flow through inlet because of slope. The orifice/inl
can be reduced using the plate and cutter provided to control the Outflow rate - see #6.
5. Horizontal intake is 5" pipe between the straps with aluminum screen door for access to the 2Y2" inle
and orifice inside.
:6. Capacity: 6 234 cubic feet per day maximum with 21/2" inlet and 2.5 head. Inlet can be reduced by
installing a smaller orifice using the plate and cutter provided to adjust flow rate for the particular
,drawdown time required. Please use the sizing template at wwwfairclothskimmer.com .
7. Ships assembled. User glues inlet extension and barrel, installs vent, cuts)orifice in plate and attach
Ito outlet pipe or structure. Includes float, flexible hose, rope, and orifice plate and cutter. Does NOT
include 1 1/2" Sch 40 SOLID pvc barrel or "arm" � SUPPLIED BY USER.
2-5inchCut 5-1-19 (0 J. W. Faircloth & Son, Inc. 20
BOTTOM RISER CREST EMER. SPILL. TOP OF DAM DE'TTWTERIi11G1
ELEVATION ELEVATIO TION
I- N' ELEVA rTIME
*Opening Elevation of SCM Riser
TEMPORARY SKIMMER SEDIMENT BAS111
------- -------- ­ ------
F
Permanent Liner: Tall Fescue
C: (See Seeding Spec's)
Temp. Liner Width
4.50'
0
1,0
0.
Temporary Liner: STRAW WITH NET 5
(NAG S75 or equal, Staple Pat. A) PER I MANENT IT
Trapezoidal
T------------
d
b e
x-section area(A)= bd + Zd 2 z
d
top width (T) = b + 2dz
CHANNEL DATA BLOCK
CHANNEL Avg TEMPORARY
DESIGNATION b d T z LINER MTL.
Permanent Ditch-PD1 (1.4%) 0.5' 1.0' 4.5' 2.0 STRAW Will. NET
Permanent Ditch-PD2 (2.57.) ---T -6.-5,71 _o'_T_4._5,T_2.o STRAW WITH NET
"STRAW WITH NE-r' TO BE NAG S75, OR EQUAL
CROSS SECTION GEOMETRY OF
GRASS -LINED DIVERSION CHANNELS NTS
ILL SLOPE 12MIL PLASTIC SHEETING
SHEETING
2'MIN
Z IN ST WIDTH
FlIVISF, ------- COMPACTED
IVATUFU DIVERSION BERM
(0
ANCHOR 6" MIN
WIDTH AND
DEPTH TO BE DESIGNED
BY ENGINEER (11' MIN) ANCHOR 6" MIN
NJ
.I� i,!��iI�I��N ail � IIII�III��,�,I,��!�I I.
ri
...........
/Af
C211
7
nip
Kevin E. Herring
ENGINEERING
16101 SllverRoad
Oakboip, NC28129
ail -621-0935
DATE. 12/15/2021
HORIZ. SCALE NIA
VERT. SCALE NIA
DRAWN BY. keh
o