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Home My WebLink AboutSW4240502_Plansheet - Misc. Detail_20240820 A A THE INSIDE SLOPES OF THE SKIMMER O o SEDIMENT BASIN SHALL BE STABILIZED z N WITH NORTH AMERICAN GREEN S75 w z 0 (STALE PATTERN D) EROSIONM W CONTROL MATTING UPON COMPLETION PVD 90° SCA E. tY 0O I OW(TYP.) tY OF CONSTRUCTION Q NOTES POrD OUTLET 0 0 2L ALL JOINTS OF THE FLOATATION SECTION SHALL STRUCTURE z BE SOLVENT WELDED.J0114TS OF SKIMMER SECTION = 0 NEED NOT BE WATER-TIGHT. J Q FLOATATION do=PIPE DIA 3).100.. HOPE FLEXIBLE DRAWN PIPE IS TO BE ATTACHED SECTION • OO INFLOW TO THE POND OUTLET STRUCTURE WITH WATER-TIGHT PVC PIPE �\ ••La=APRON LENGTH 18"MIN CONNECTIONS. ITYP.) rnzTOP OF DAM END CAP V4L ORFK1 IS TO BE SIZED ACCORDING TO STORAGE C0 (O 0) W=APRON WIDTH (n Z J (V co c do+La FOB ar�asT z4 HouRs. w W 0 a) d=APRON DEPTH PLAN W J � o NPVC E 10'MIN caP IT z Z co ?j WEIR LENGTH (� EMERGENCY N LZLI Y O La SKIMMER SPILLWAY SECTION THRU WEIR _J o U) DEWATERING PLAN VIEW � N Z 0 X Q SLOPE 0% FLOW DEVICE O Q O d Ii - ------------------------- _- - - - - - - - - - - - - - - _III-III-III-I I I, A I I III-III-III-I I PLAN VIEW ATTACH FLEXIBLE PIPE TO PVC _ 15 _ 1E11E11E1 C WITH TWO 10.1 WOOD SCREWS �_� �_� �_� �= BAFFLES 1 ORIFICE DRILLED SECTION A-A M CAR d END CAP END CAP FILTER FABRIC SEE NOTE 4)SKIMMER BASIN TOP OF BERM ------ FIRM LICENSE C-1891 INFLOW BAFFLES(STD)STD) FLANGE WITH RUMBER CASKET MATERIAL NOTES: PIPE 1'MIN FREEBOARD SCREWS HOR TO STRUCTURE SUITABLE WITH (SEE DETAIL THIS SHEET) EMERGENCY As APPROVED BY THE ENGINEER) 1.SEE SCHEDULE FOR DIMENSIONS. SPILLWAY �{�l••CAROC``'°°- 2.INSTALL A FILTER BLANKET OR FILTER FABRIC SKIM ER ELEVATION FRONT VIEW SBE VIEW 0�•��(SS�O•.�y BETWEEN THE RIPRAP AND SOIL FOUNDATION. �i 3.FILTER FABRIC SHALL BE MIRAFI 500 OR EQUAL. DISSIPATER DEPARTMENT OF TRANSPORTATION gTANDARD N0. SDELAWAU DEWATERING DIOF 1 RScoRiADffim13D os "EN $ DEWATERING m ZONE RIP RAP vosisT ZSa ATE PAD G _ 1 01 Pipeapron NCDOT �\ -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- -----------------------------------------------' JJ c Outlet Diameter Discharge d50 La W dmax thickness riprap \�/� \�,�\� \�.\�/�/�/\�/\�/\�/\�\�\ LP••' '� 4� �` in) (cfs) (ft ft ft ft ft Class SEDIMENT BASIN SKIMMER/DEWATERING OUTLET DEVICE 100 18" 9.37 0.30 10.0 11.5 0.5 0.7 A / , NOT TO SCALE '1�'z'M,CAV 200 15" 4.19 0.30 8.0 9.3 0.5 0.7 A 'lrr+rrrrWW` 300 15" 1.42 0.30 1 8.0 1 9.3 0.5 1 0.7 A INLET SHALL BE PROTECTED CMP OUTLET PIPE 400 15" 1.07 0.30 8.0 9.3 0.5 0.7 A (AS NEEDED)FROM EROSION 500 1 18" 1 10.42 1 0.40 1 10.0 1 11.5 0.6 1 0.9 B WITH RIPRAP,TARP, MATTING OR EQUIVALENT. PIPE OUTLET STABILIZATION CROSS SECTION NOT TO SCALE CONSTRUCTION SPECIFICATION: NOTES: 1. GRADE THE BASIN SO THAT THE BOTTOM IS LEVEL FRONT TO BACK AND SIDE TO SIDE. 1. BASIN SHOULD BE CLEANED OUT WHEN CAPACITY REACHES AN ELEVATION REPRESENTING THAT THE BASIN IS HALF-FULL. 2. INSTALL POSTS ACROSS THE WIDTH OF THE SEDIMENT TRAP. 2. THE TARP USED TO PROTECT THE WEIR SHALL BE THE WIDTH SPECIFIED.THE LENGTH OF THE TARP SHALL BE ACCORDING TO 3. STEEL POSTS SHOULD BE DRIVEN TO A DEPTH OF 24 INCHES, SPACED A MAXIMUM OF B o AVAILABLE SUPPLY. IF MULTIPLE TARPS ARE TO BE USED,THEN TARPS SHALL BE OVERLAPPED AT LEAST 12".THE UPSTREAM 12" 4 FEET APART,AND INSTALLED UP THE SIDES OF THE BASIN AS WELL. THE TOP OF B8 TARP SHALL OVERLAP THE DOWNSTREAM TARP.THE TARP SHALL BE 50 MIL. HEAVY DUTY SILVER TARPAULINS OR EQUIVALENT FOR U.V. RESISTANCE. THE FABIC SHOULD BE 6 INCHES HIGHER THAN THE INVERT OF THE SPILLWAY. TOPS OF WITH LINER, NO GRAVEL APPROACH BAFFLES SHOULD BE 2 INCHES LOWER THAN THE TOP OF THE BERMS. ° QB a �o 3. PROVIDE A MINIMUM OF THREE POROUS BAFFLES TO EVENLY DISTRIBUTE FLOW ACROSS THE BASIN, REDUCING TURBULENCE. o QDOOQDO 7 4.WHEN USING POSTS,ADD A SUPPORT WIRE OR ROPE ACROSS THE TOP OF THE MEASURE 0000 ODO INVERT z Z 4. BAFFLE MATERIAL MUST BE SECURED AT THE BOTTOM AND SIDES USING STAPLES OR BY TRENCHING AS FOR A SILT FENCE. TO PREVENT SAGGING. OQ O0 00 0 PIPE J O N S ITE CONCRETE WASHOUT 5. MOST OF THE SEDIMENT WILL ACCUMULATE IN THE FIRST BAY,SO THIS SHOULD BE READILY AVAILABLE FOR MAINTENANCE. 5.WRAP POROUS MATERIAL, LIKE JUTE BACKED BY COIR MATERIAL, OVER THE TOP WIRE. A O o�O 000 000� 00 A �O/� THE FABRIC SHOULD HAVE FIVE TO TEN PERCENT OPENINGS IN THE WEAVE. ATTACH 6 0 p 000 OO f FLOW v, U Q STRUCTURE WITH LINER 6. DURING THE CONSTRUCTION PHASE OF THE PROJECT, PERMANENT STORMWATER RISER SHALL ONLY DEWATER FROM THE TOP FABRIC TO A ROPE AND A SUPPORT STRUCTURE WITH ZIP TIES,WIRE, OR STAPLES. DO 000 0 OF PIPE. QO Q000�00 J U 6.THE BOTTOM AND SIDES OF THE FABRIC SHOULD BE ANCHORED IN A TRENCH OR PINNED oOO 8000 OO U Q = 7. POND SHALL NOT BE CONVERTED FOR STORMWATER USE UNTIL APPROVED BY ENVIRONMENTAL ENGINEER. 0 00 OQ0000 0 0 WITH 8-INCH EROSION CONTROL MATTING STAPLES. 00o 0 O Q 13� 10'-0"MIN. 0p on 000 0 Z 0 A 7. DO NOT SPLICE THE FABRIC, BUT USE A CONTINUOUS PIECE ACROSS THE BASIN. ° 0,VJ Z 009 o ° A 90 �/1 Q Q D O SANDBAGS (TYP.) o o Q O O OR STAPLES TEMPORARY SKIMMER SEDIMENT BASIN MAINTENANCE: Q Z ? 10 MIL 1. INSPECT BAFFLES AT LEAST ONCE A WEEK AND AFTER EACH RAINFALL. MAKE ANY REQUIRED O or- D 1:1 PLASTIC PLAN = 0 SANDBAGS TYP.) O Q q SIDE SLOPE LINING OR STAPLE CO a LO a (TYP.) (0 Z D 0 ALL] LO 0 0 0 o D RIPRAP HEADWALL, V MIN. W 0 HEIGHT FROM ROAD SHOULDER 0 > A 1 3' � Q SLOPE NATURAL SECTION A-A ® INSTALLATION SEDIMENT 2 CLEARLY MARKED SIGNAGE 2"-s" 2"-s" 2"-s" 2"-s" . 0 0 GROUND CONCRETE NOTING DEVICE (18"X24" MIN. (5-12.5cm) (5-12.5cm) (5-12.5cm) (5-12.5cm) 12"311cm TORAGE ZONE �' 000 •00 - - DETAIL o000000 0 - WASHOUT NOTES: FLOOD ST GE ZONE 1.5 onninPIPE-INVERT FLOW 1.ACTUAL LOCATION DETERMINED IN FIELD 3' 3' - - - - - r c� m U - (0.9m) (0.9m) O j 2.THE CONCRETE WASHOUT STRUCTURES SHALL BE 6' 6' 2„-5„ t5 1.Prepare soil before Installing rolled 0') N 18m • 18m :;'�'';_; 5 12Scm �l ) erosion control products (RECPa), NC DOT#5 OR#57 CLASS B RIPRAP MAINTAINED WHEN THE LIQUID AND/OR SOLID REACHES 33, ::•,;vim:: (5 Including any necessary 75%OF THE STRUCTURES CAPACITY. 3'3 (lm) = 't`•:' application of lime, fertilizer, and WASHED STONE (lm) 1.6' ht 7= seed. (0.5m) 0 2.Begin at the top of the slope by SECTION A-A PLAN 3.CONCRETE WASHOUT STRUCTURE NEEDS TO BE • anchoring the RECPs in a CLEARY MARKED WITH SIGNAGE NOTING DEVICE. 3.3' 6" 6"(15cm) deep x 6"(15cm) wide (Im) [All trench with approTdmately 12" NOTE: 0 ® (30crn)of RECPs extended beyond Z m • the up-Mope portion of the trench. STRUCTURAL STONE SHALL BE H m 0 BELOW GRADE WASHOUT STRUCTURE STAPLE • • Anchor the RECPs with a row of NOT TO SCALE PATTERNS staples/stakes apprmdmately 12" CLASS B STONE AND SHALL BE W Z W (30cm)apart in the botbDm of the PAID FOR AT THE CONTRACT C) W 0.7 Staples per SQ.YD. 1.15 Staples per SQ.YD. trench. Backnll and compact the O Q W trench after stapling. Apply seed to UNIT PRICE PER TON"STONE FOR 1[11� 1[11� 2 Q the compacted soil and fold the EROSION CONTROL(CLASS"B")." d 0 0 0 r' `• remaining 12"(30cm) portion cf HIGH 10'-01, MIN. ••` •`� `. RECPs back over the seed and z COHESIVE SANDBAGS(TYP.) 2"-5" - - 2"-5" 2"-5" - - 2"-5" •• _ compacted soil. Secure RECPs SEDIMENT CONTROL STONE SHALL W 1E S (5-12. ;cm) - -I (5-12.5cm) (5-12.5cm) - -I (5-12.Scm) �"-'•^ �,�•� -� rnrer compacted soil with a row BE NO. 5 STONE AND M LOW FILTRATION B HIGH �� "�• -� atapleslstaltea spaced � o SOIL BERM 2' 2' SHALL BE PAID FOR AT THE o 10 MIL COHESIVE & approxlmetely 12"{31}crn) apart rJ = O O O O PLASTIC LINING LOW FILTRATION 4' • (0.6m) 4, (0.6m) O _ �T(��"( a, thewidthoftheRECPs. CONTRACT UNIT PRICE PER TON M w 1:1 SIDE SLOPE SOIL BERM (1.2m) (1.2m) jjj JJj 3.Rail the RECPs {A) dawn or (B) "SEDIMENT CONTROL STONE". Z O O a (I YP.) (O1.6'.Sm) 5m) ��-(��-( h�o nlallil unroll with the across slope. z W z o 11L o O O Lo O �777�m�m� swe against the soil surface. All DIMENSIONS ARE MINIMUM O > o a m nj i p z k 3.3' 3.3' -III-III-III- RECPs must be securely featened � w U) Q (Im) (Im) ,� ,� --� y. uL iu iL L to soil surface by placing d • • O O O ACCEPTABLE UNLESS OTHERWISE � o 0 2-B, ® ��Tl'(�� staples/stalws in appropriate SPECIFIED BY THE ENGINEER. z U z o 0 J J j jjJj_j( J J j k"ions as shown in the staple O_ O o 0 6" TI B-B • O O O SEC O N -1�- 4.The edges of parallel RECPs must w cr U o pattern guide. ROCK PIPE INLET PROTECTION `n o o 0 be stapled with apprvrdmately 2" NOT TO SCALE W z i _ 5" (5-12.5crn) overlap depending IY 0- a on the RECPa type. LU B 5.Consecutive RECPa spliced down LL 0 a 1.7 Staples per SQ.YD. 3.4 Staples per SQ.YD. H(75. the elope must be end over and o LU o p p p p (Shingle style)with an approximate >SANDBAGS (TYP.) NOTES: 3"(7.5cm)overlap. Staple through � LUOR STAPLES 1.ACTUAL LOCATION DETERMINED IN FIELD overlapped area, apprwdmatey - 2"-5" 2"-5" 12"(30cm) apart across entire (5-12.5cm) (5-12.Scm) RECPs width. 0') 0 0 CLEARLY MARKED SIGNAGE 2.THE CONCRETE WASHOUT STRUCTURES Lu o 0 0 2' 101, 0 ~ Q Q Q CONCRETE NOTING DEVICE (1$"X24" MIN. SHALL BE MAINTAINED WHEN THE LIQUID (0.6m) (25cm) Drawing Not To Scala 0 LO o 00 WASHOUT AND/OR SOLID REACHES 75%OF THE 4' O "NOTE: STRUCTURES CAPACITY TO PROVIDE (1.2m) J NORTH Disclaimer; In loose soil conditions,the use of ao 0 ADEQUATE HOLDING CAPACITYWITHAP AMERICAN The Information presented herein Is general design InFormallon only.For specific applications. staple or stake lengths greatarthan GREEN consult an Independent professional for further design guidance. 6"(15cm) may be necessary to Oz Q m O MINIMUM 12 INCHES OF FREEBOARD. O O O O 5401 St.Wendel-CynthianisRy PH:OWM-ate property secure theRECP%. 10"(25cm) Poeeyville,IIv 47633 wmr.asgrcen.eom �aWWn on:a�17 PLAN 3.CONCRETE WASHOUT STRUCTURE NEEDS O O SITE TO BE CLEARY MARKED WITH SIGNAGE 3.3' NOTING DEVICE. o 0 0(Im)o ABOVE GRADE WASHOUT STRUCTURE EROSION NOT TO SCALE 3.75 Staples per SQ.YD. CONTROL PRELIMINARY DESIGN NOT FOR CONSTRUCTION DETAILS SHEET C7 . 2