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Home My WebLink AboutSWA000128_Plansheet - SCM Detail_20211214 (2)DocuSign Envelope ID: 3EC6BD1C-4154-49B8-A5A0-4C540A369F48 I ' l b \ \ \ 12,,41F -I - - - - - \ I I \ \ 0. 9AC I I I I J211 '-"F - I I I - I I`-1 � 39 \��,_j12 SF I I I 14,167 SFAC I I / / 0.28 AC I JiF / I 0.33 AC ]((�� \. I AC I \ \ 12:AF / I/ I 0.28 AC III I I III I I // \� \ I - *CB 151 ---- L - - - - - - - I L---- ---� 14jSF \ / \ 0.33 AC/ 60so' C1 - ------ i / o 6p - - mil% J 1d/ ---- ------ \ 3+50 �F�- 364 QS /\ ' /\t, M 20 PRIVATE DRAINAGE & / 3+00 _��-'~- 'o. / li A/ PUBLIC SCM ACCESS AND 2+50 _-4_-�F RISER-SCM-1 (4X4) MAINTENANCE EASEMENTI I o �" -L-�I-�-� �� 1 / /K / ,'\V� \V SCM #1 20' PRIVATE 12 F o.zanc I I N (WET POND) , \ - DRAINAGE \4/ Ac I I / I i ✓ �� EASEMENT i I _ J 70 SPILLWAY , 265 364 J P �\li \l/ \l/ \1/ \V/ ..::::......::. Lop. 9. 5. 822' \ \ .e ./ � 2 j� J \1/ \1/ \\l/ \1/ \jr \l/ _i- -\ /mil/ / M LAC\I! ACCESS = 364 VS \1/ & MRI NT NCE EASE �265 234.0 -\l;, _ A/ 7b� 00' N9°3423"'E \ \l/ _ 'dj ,�/`�\V\ �� \ \V "\b. - � \1/ \1/ \)/ \V \1/ J\f/ ` _ \I/ _ \t/ 4i \I/ \t/ \V 41 \ti i \1/ \I/ ,\lf ' \1/ I I \IL �� \1/� \1/ �\ \1/,- - V- -d/- ' / PROPOSED GRADE EXISTING GRADE 270 r-__� - 1- ' - - - - YR 267 96' YR = 267.15' - 265 ' 1 YR = 264.99' WATER QL PERMANENT POOL = 263.00' 18" MIN. CLASS B, SEE SHEET C7.3 FOR DETAIL RISER-SCM-1 (4X4) TOP 266.75 INV IN 263.00 (SEE POND DATA) INV IN 265.50 (SEE POND DATA) INV IN 265.50 (SEE POND DATA) INV OUT 263.00 (TO SCM 1 OUTLET) TRASH RACK L M (2) 8"X12" ORIFICE - O (1) EACH SIDE ELEV. 265.50' 263.95' - 3" WQ DRAIN PIPE ELEV. 263.00' 6:1 VEG. SHELF 275 10' WIDE BERM ELEV = 269.00 EMERGENCY SPILLWAY ELEV = 267.50 SCM 1 OUTLET 270 I OP 18 INV IN 262.60 (SEE PO D DATA) 260 III ` N -- II I I I I -I I _-I -_ _101-1 OO- MAIN POND BOTTOM ELEV = 258.00' 73.40' OF O-RING GASKETED I I -I I -.I I MAIN SEDIMENT BOTTOM ELEV = 257.00' - 42" RCP FOREBAY BOTTOM - @ 0.4D%_I I -I I I I _ ELEV = 258.00' - _ SCM 1 OUT-1 I - - FOREBAY SEDMIENIT 62.78' OF O-RING GASKETED -_ BOTTOM ELEV = 257.00' 30" RCP - @ 0.64% VELOCITY DISS PAD 250 250 O ML OI Co`O � cflL NLO mLO M� °oC NL 0 rn O �� CD �� aD CO �ON �0� ~ CO ~ �0� ^� ~ CO �� ~ CO '�C ~ CO CO O CO N NN NN NN NN NN NN NN NN NN N 0+00 1+00 2+00 3+00 4+00 5+00 6+00 SCM 1 PROFILE HORIZ SCALE: 1 "=50' VERT SCALE: 1 "=5 1 C9 GVN SCALE 1 "=50' 0 50' 100' VEGETATIVE SHELF PLANTING PLAN LEGEND + + VIRGINIA SWEETSPIRE ++++++++++++++ (ITEA VIRGINICA) QUAIL SEDGE (CEREZ TENERA) JOE PYE WEED (EUPAT' FISTULOSUS) Top of Riser "K""' ' "'•" 266-50 ft 2 Yr Water Surf Elev: NA 1 ! - - - - - - - - - - - - - 8 in. by 12 in. Orifice ; 265.50 ft 1 Yr Water Surf Elev264.99 ft - (2) TOTAL Tempoo Pl Elev:---- 263.95 ft 1 r 1 1 Perm Pool 263.00 ft 1 ! - - - - - - - - - - - - - 1 1 1 1 1 ! ! � 1 1 ! 4.00 ft ! 1 5.0n-- ---- 69 LF of 30" RCP @ 0.58% 3.00 inch Invert Out: 263.00 ft Water Duality Orifice Fill With Concrete 263.00 ft As Necessary __- 257.50 ft Precast Extended Base 0.50 ft 257.00 ft - ------------------ 1.00 ft "-�' 1.00 ft PRECAST CONCRETE RISER 4 ft x 4 ft x 9.5 ft Tall. With a 0-5 ft Thick Precast Extended Base 0 50 PROFILE SCALE Volume1.0" Water Quality Runoff . . ■ Using the runoff volume calculations in the "Simple Method" as described by Schueler (1987) Where: Rv = Runoff Coefficient, in/in I = Percent Impervious 1= 28.2% Rv = 0.05 + 0.009(I) Rv = 0.304 1.0 inch runoff volume (Required) Runoff volume, S=(Design rainfall) (Rv) (Drainage Area) Design Rainfall = 1-0 inch Drainage Area = 25-48 acres Storage Required = 28,118 cu. ft. Volume Storage For 1.0" Depth PPE SA (SF) Runoff Above Permanent Pool (Provided) Top Temp Pool SA (SF) Volume (CF) Elevation 0.95 21,731 33,838 28,118 263-95 Size Water Quality Orifice Qv. = CdA 2 h 1/2 for (2-5) Day Drawdown for 1" RunoffVolume (Orifice Equation; Cd=0-60) 3.00 11Orifice Diameter (inches) 0-83 Driving Head to Centroid of Orifice (ft) 0-12 Q1.0" Drawdown Rate (cfs) 28,118 Water Quality Volume (V V Q1" x 86,400 Drawdown Time (days) 2.6 Pond Pond Type Drawdown Time (days) (2 - 5 days) I Riser Data & Elevations Wet Pond TSS Removal 85% Top of Pond / Berm 269 06 ft Secondary Spillway Width 70-00 ft Bottom of Secondary Spillway 267.50 ft Top of Riser 266-50 ft (at least 1' Above TPE) Riser Type 1 Size 44 ft Top of Water Quality / Temp Pool Elev 263.95 ft (1" Runoff) Top of Veg- Shelf 264-00 ft Permanent Pool Elevation (Normal Pool) 263.00 ft Water Quality Orifice Elevation & Size 263.00 ft 3-00 in Secondary Orifice Elevation & Size (Rise & Span) 265,50 ft 8.00 inch 12.00 inch Bottom of Veg. Shelf 263-00 ft "Rise "Span Top of Sediment Storage 1 Pond Bottom 258-00 ft Bottom of Sediment Storage 257.00 ft (Min 1 ft) Invert Out of Riser 263.00 ft Outlet Pipe Size 30-00 in Diameter RCP Outlet Pipe Length & Slope 69.00 ft 0.58 % Downstream Outlet Elevation 262-60 ft 1 Yr Water Surface Elev / Peak Flow (CFS) 264.99 ft 0.32 CFS 2 Yr Water Surface Elev Peak Flow (CFS) NA ft 0-00 CFS 10 Yr Water Surface ElevPeak Flow (CFS) 266-60 ft 7-61 CFS 25 Yr Water Surface Elev Peak Flow (CFS) 267.15 ft 31.75 CFS 100 Yr Water Surface Elev Peak Flow (CFS) Top of Riser: 266.50 Top of WQ Pool_ 263.95 --------------- ----------------- Pond Bottom 258.00 Perm Pool J Sediment Bottom 263.00 257.00 Anti-Bouyancy Riser Dimensions 267.96 ft 115.65 CFS Pond Detail 3 in WO ❑rifce Elev 263-00 10' Berm 269-00 100 Yr 267.96 Spillway 267-50 25 Yr 267-15 ----- 10 Yr 266.60 - 2 Yr NA 1 Yr 264.99 See Plan for accurate outlet design Inv Out: 262-60 Invert Out: 263.00 69 LF of 30" RCP @ Base: 257.00 0.58% Weight of Structure Displaced Volume Outside Width 5.00 ft Wal Is = 12,825 LBS V = Lx Wx (HT) = C.F. Inside Width 4.00 ft Base = 3.675 LBS Outside Length 5-00 ft FILL = 13,200 Ibs Displaced Water = Inside Length 4.00 ft C.F. ' 62A PCF = LBS Height 9.50 ft Outlet Pipe = 368 LBS Base Thick' (ft) 0-50 ft WQ Orifice = 4 LBS Add 15% Factor of Safety Wall Thick' (ft) 0.50 ft Ext Base (ft) 1.00 ft Weir 41 = 50 LBS V = 250 C-F- Are as removed from Riser Weir #2 = 0 LBS Disp. Water = 15,600 LBS Outlet Pipe 4.91 ft Weir #3 = 0 LBS 15% F.S. = 2,340 LBS WQ Orifice 0-05 ft Weir#4 = 0 LBS Orifice #1 0.67 ft Other 41 = 0 LBS Safety Factor 1-63 Orifice #2 0-00 ft Orifice #3 0-00 ft Weight = 29,278 LBS Weight = 17,940 LBS Orifice #4 0.00 ft Precast Concrete Riser Structure to be 4 ft x 4 ft x 9.5 ft Tall, With a 0.5 ft Thick Precast Other 0-00 ft Extended Base Planting Summary Requirements Dam ! Berm Non -Clumping Turf Grass 6' Shelf Length 727 Area of Shelf = 4362 SF (50 Plants per 200 SF of Area) Quantity Type Root Common Name Scientific Name Planting Size Notes 364 Herbaceous Container Quill Sedge Cerex Ten era 4" Pot 24"-36" OC 364 Herbaceous Container Virginia Sweetspire itea Virg inica 4" Pot 24"-36" OC 364 Herbaceous Container Joe Pye Weed Eupaf Fistulosus 4" Pot 24"-36" OC 100 Yr Flow in Spillway 65.52 cfs 4:1 Side Slopes 10 Yr Flow in Spillway 0.00 cfs 82 ft Top of Pond 269.00 '� 70 ft -------4------------------ ----------- ------- 1.04ft ' 1.50 ft 1 ----------- 100 Yr Water Surf Elev: 267.96 ft -------------- 10 Yr Water Surf Elev: 266.6D ft ___ __________---------- -- -- -------------- 0.46 ft Spillway Elevation 267.50 ft Spillway Liner to be either Class A Riprap, NAG C350 or approved equal. SPILLWAY DETAIL Know what's below. Call before you dig. ALL CONSTRUCTION TO BE IN ACCORDANCE WITH ALL TOWN OF RAEFORD, NCDEQ AND NCDOT STANDARDS. �CA Ro•. OD42A �'�� 46B_ � $2232- � 0 - i FNGINE�� •,��qF� V. ZPGGP`. 0 V o 10 o E N LULO z;�N Q :5 U UU=N � 1-4 z d LL N 0 LU po c v J �J�rn c X o <°�� o U LO� E�z L �0� o � L rn J W I- 10/1/2021 z O a U V) w 0 z O V/ w w Q DATE 1010112021 DRAWN BY 331 DESIGNED BY 331 CHECKED BY MVZ SCALE H: 1 "=50' V: 1 " =5" Ln V/ Q U z z � W o OQ� L.L z = 0 C)� z ° IlZ O LU z o16 U Uz D Q Q C o J z_ ceYa J O O O r-I Q LL U LUo U = awe O I.J� z JOB NO. 47049 SHEET NO. C7.1 6 1 U) U C N O nz 3 a) O 2- D n T c nz 0 D a 0 cu w n3 C n 0 m 0 3 �a �o o� °z �o 22 02 T � n3 0 -_ c o n3 � C:o_ o Z) CD 3 zN o2 2a X o_ r 0 a o_ o .3 a C, >� aXi o L j L DocuSign Envelope ID: 3EC6BD1C-4154-49B8-A5A0-4C540A369F48 I� V_ V / V_ V 97n Will -0111111 1 1 \ 11 1 �1 •\ \ I 1 . I11 1 l♦iG l.�` ;��i �' _ �.iiciF.a../Il:?�::�/;�:..;�;��rl'i�,��. /'�..;.�n• 1 • . � � \;\11,/,'�` � � r .-� JIII/=.�I.•I�i�� I 1 1 �'� 2 ri r,:' '�ri' !:`i, i!i r!'�'��! i ' r' p lilt i ri rill • ;, o rr - '� y. � -Y�' �- \ / ,/ ri / ,i /i�/; :ter: ri ri. .:.`��;� � 7�MY��` �� ■ -�� /.,./._:�" /%ter:•. / �/� / q>;" %%,%.". '-� � ��; ti � i� - • rr ton✓ilryr Ii'r Ii% r r. ri r % ✓%�l�'!r /i'.:., i ri.r' � r!i � � � ��,�f/•�� : � � _ . r RISER-SCM 2 (5X5) TOP 262.00 INV IN 260.00 (SEE POND DATA) INV IN 258.00 (SEE POND DATA) INV IN 260.00 (SEE POND DATA) INV IN 260.00 (SEE POND DATA) 97n V OUT 258.nn rTn .(-KA 2 OUTLET) 10' WIDE BERM EXISTING GRADE ELEV = 265.00 EMERGENCY SPILLWAY ELEV = 263.50 26 PROPOSED GRADE 265 71- 100 YR = 263.98' -TRASH RACK S M 2 OUTLET 260.58 25 YR = 262.89' _ TOP 10 YR = 262.17' - _ M INV IN 257.50 (S w ` _ - (3) 8"X12" ORIFICE ELEV. 260.00' 260 1 YR = 259.59' 260 WATER QUALITY ELEV = 259.41 - 6:1 VEG. SHELF PERMANENT POOL = 258.00' 4" WQ DRAIN PIPE _ 18" MIN. CLASS B, SEE ELEV. 258.00' 25 1 SHEET C7.3 FOR DETAIL N III -IIII 255 III � MAIN POND BOTTOM ELEV = 253.00' -MAIN SEDIMENT BOTTOM ELEV = 252.00' Mi I M I IIII-III VELOCITY = I 1 FOREBAYMIENT _ DISS5 - 250 _' BOTTOM ELEV=254.00' III IIII �FOREBY moI _- SCM 2 OUT242241 - I I_I 139.34 OF O-RING GASKD ETEIBOTTO-III_III III II III_I II III II I II I I I I I I_ _99.46'OF O-RING GASKETED=I III III I I I I 42 RCP F, _ ELEV 253 00 I III I III 36" I(cDMI - ° -III- -I I I 111 1 I --I -III --I -III --I 0.50%- -I 245 245 N LO ('0 O oo LO �z C� LO Lo LO o) LO Lo LO a) LO � LO C LO LO C O M CO CO co LC) � 06 � LID co � LID 't N � M N � M N (N Ln N I N N NO P N � N (Z N � � co (D N N (D N N N N N N Ln N N U) N N U) N N N N Ln N N Ln N N LO N N LO N LO 04 N N 1)+00 1+00 2+00 3+00 4+00 SCM 2 PROFILE HORIZ SCALE: 1 "=50' VERT SCALE: 1 "=5 5+00 6+00 1 E POND DATA) 7+00 7+50 0 50 PROFILE SCALE t V_ V_ I IIII Ilrl// / V II SCALE 1 "=50' 0 50' 100, VEGETATIVE SHELF PLANTING PLAN LEGEND ....... VIRGINIA SWEETSPIRE ....... +++�+++�+++�++ (ITEA VIRGINICA) QUAIL SEDGE \ (CEREZ TENERA) JOE PYE WEED (EUPAT' FISTULOSUS) Top of Riser 262.00 ft _______ -- ______ ' 2 Yr Water Surf Elev: NA 8 in. by 12 in. Orifice 260.00 ft _1_Yr W_ater_S_urf_Elev: 259.59 ft (3) TOTAL Temp Pool Elev:----259.41 ft 4.00 inch Water Quality Orifice 258.00 ft Perm Pool 258.00 ft 1 I 1 I 1 I 1 � I 4.00 ft ' 5.00 ft---- --- --- 99.46 LF of 36" RCP @ 0,50% 0 Invert Out: 258.00 ft T1. 1I I I 1 1 Fill With Concrete ; 1 I 1 1 As Necessary ; ' 252.50 ft ------------------ Pre cast Extended Base 0.50 ft 252.00 ft ------------------ I 1 I I 1.00 ft r 1.00 ft PRECAST CONCRETE RISER 4 ft x 4 ft x 10ftTalk With a0.5ftThick Precast Extended Base Using the runoff volume calculations in the "Simple Method" as described by Schueler (1987) Where: Rv = Runoff Coefficient, in/in I = Percent Impervious 1= 40.6% Rv = 0.05 + 0.009(1) Rv - 0.416 1.0 inch runoff volume (Required) Runoff volume, S=(Design rainfall) (Rv) (Drainage Area) Design Rainfall = 1-0 inch Drainage Area = 48-66 acres Storage Required = 73,429 cu. ft. Depth PPE SA (SF) Top Temp Pool SA (SF) Volume (CF) Elevation 1.41 44.563 59.230 73.429 259.41 Q ,• - CdA 2 h 1/2 (Orifice Equation; Cd=0-60) 4.00 Orifice Diameter (inches) 1.25 Driving Head to Centroid of Orifice (ft) 0-27 Q1-0" Drawdown Rate (cfs) 73.429 Water Quality Volume (V VwcQ1" x 86,400) Drawdown Time (days) 3.1 Pond Type Drawdown Time (days) (2 -5 days) Wet Pond TSS Removal 85°Io Top of Pond J Berm 265.00 It Secondary Spillway Width 60-00 ft Bottom of Secondary Spillway 26150 ft Top of Riser 262.00 ft (at least T Above TPE) Riser Type 1 Size 5x5 ft Top of Water Quality / Temp Pool Elev 259A1 ft (1" Runoff) Top of Veg- Shelf 259-00 ft Permanent Pool Elevation (Normal Pool) 258-00 ft Water Quality Orifice Elevation & Size 258.00 ft 4.00 in Secondary Orifice Elevation & Size (Rise & Span) 260.0 ft (3) TOTAL 8-00 inch 12-00 inch Bottom of Veg. Shelf 258.00 ft " Rise " Span Top of Sediment Storage 1 Pond Bottom 253.00 ft Bottom of Sediment Storage 252-00 ft (Min 1 ft) Invert Out of Riser 258.00 ft Outlet Pipe Size 36.00 in Diameter RCP Outlet Pipe Length & Slope 99.46 ft 0-50 % Downstream Outlet Elevation 25T50 ft 1 Yr Water Surface Elev 1 Peak Flow (CFS) 259-59 ft 7.52 CFS 2 Yr Water Surface Elev Peak Flow (CFS) NA ft 0.00 CFS 10 Yr Water Surface Elev Peak Flow (CFS) 262.17 ft 1939 CFS 25 Yr Water Surface Elev Peak Flow (CFS) 262-89 ft 53.77 CFS 100 Yr Water Surface EIev Peak Flow (CFS) 263.98 ft 137.19 CFS Top of Risen 262-00 4 in WQ Orifice Top of WQ Pool: 259.41 258.00 -------------- ---------------- � -4 ------ Per... , 258.00 ---iment Bottom 252-00 Riser Dimensions Outside Width 5.00 ft Inside Width 4-00 ft Outside Length 5-00 ft Inside Length 4.00 ft Height 10.00 ft Base Thick' (ft) 0.50 ft Wall Thick' (ft) 0.50 ft Ext Base (ft) 1-00 ft Areas removed from Rise Outlet Pipe 7-07 ft WQ Orifice 0-09 ft Orifice #1 0.67 ft Orifice #2 0-00 ft Orifice #3 0-00 ft Orifice #4 D.00 ft Other 0-00 ft Pond Bottom 253.00 Invert Out: 258.00 Base: 252-00 Elev 10' Berm 265.00 100 Yr 263-98 Spillway 263.50 25 Yr 262-89 10 Yr 262-17 2 Yr NA 1 Yr 259-59 See Plan for accurate outlet design Inv Out: 257.50 ri • . . 99.46 LF of 36" RCP C 0-50% Weight of Structure Displaced Volume Walls = 13,500 LBS V = LxWx(HT) = C.F. Base = 3,675 LBS FILL = 13,200 Ibs Displaced Water = C.F. * 62A PCF = LBS Outlet Pipe = 530 LBS WQ Orifice = 7 LBS Add 15% Factor of Safety Weir #1 = 50 LBS V = 263 C-i Weir #2 = 0 LBS Disp. Water = 16,380 LB: Weir 93 = 0 LBS 15% F.S. = 2,457 LB;. Weir #4 = 0 LBS Other #1 = 0 LBS Safety Factor 1.5 Weight = 29,789 LBS Weight = 1$,$37 LB' Precast Concrete Riser Structure to lie 4 ft x 4 ft x 10 ft Tall, With a 0.5 ft Thick Precast Extended Base Data % Berm 6' Shelf Length 1634 Area of Shelf = 9804 SF Quantity Type Root Common Name 817 Herbaceous Container Quill Sedge 817 Herbaceous Container Virginia Sweetspire 817 Herbaceous Container Joe Pye Weed Non -Clumping Turf Grass (50 Plants per 200 SF of Area) Scientific Name Planting Size Notes Cerex Tenera 4" Pot 24"-36" OC Itea Vrginica 4" Pot 24"-36" OC Eupat' Fistulosus 4" Pot 24"-36" OC 100 Yr Flow in Spillway 59.86 cfs 4:1 Side Slopes 10 Yr Flow in Spillway 0.00 cfs 72 ft Top of Pond 265.00 4 60 ft 1 ----- ' ...... ..--�.......---- 1.50 ft 1.02 _------J ft - - -- 100 Yr Water Surf Elev: 263.98 ft 10 Yr Water Surf Elev: 262.17 ft --- -------------------- � Spillway Elevation 263.50 ft Spillway Liner to be either Class A Riprap, NAG C350 or approved equal. -]SPILLWAY DETAIL IIII what% below. Call before you dig. ALL CONSTRUCTION TO BE IN ACCORDANCE WITH ALL TOWN OF RAEFORD, NCDEQ AND NCDOT STANDARDS. �.�N ��q /? OD42A �'�� 46B__ $223L� 0 FNGIN % •,��qF� V• ZPGGP`. 10/1/2021 E O V tO O � EE N LU z�N Q U 0 LIJ O LU U QY N a U.-U.00 W z Lupo( c O --I 0� V � d d J � _j Ln CII U Ln O U �Ln z U O O L "o z cn O00 W I 01 Ln IT J LU H vi O C� O 0 W > W W U 0 Q z 0 U) DATE > 1010112021 O DRAWN BY 331 DESIGNED BY 331 CHECKED BY MVZ SCALE H: 1 "=50' V: 1 " =5" am N �.o r^ Q U z z � W o �Q� ILLz _ 0 z ° IZ W O z U J U�z n Q 0 o J z Y a o p°N Q L.L U LUO U L W O I.J� z JOB NO. 47049 SHEET NO. C7.2 6 C a N c 0 0 3 Iv In 0 Q D sZ T ID ID D a) 2 0 c cu _ In sZ `o 0 �a =5o o� a) z �0 02 T � 0 c 0 0 � 0 d o c CD 3 zN o iv �Q �X i= = 0� r= a 0 .3 a >C .N w � U L 3 (� f6 0 � o U � 0-D6 a)-0 E �.2 U 0 c In o In . � U �2 CN aw N C 0U 0 U u)(D L