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Home My WebLink AboutSW3230501_Plansheet - C320 SCM Detail_20230823 CLASS B RIPRAP WIDTH AT PIPE OUTLET: 3.75' i WIDTH AT APRON OUTLET: 9' APRON LENGTH: 8' A. TRASH RACK (SEE ENLARGED DETAIL) MINIMUM THICKNESS: 0.68' / B. PRE-CAST CONCRETE OUTLET STRUCTURE O^� CONTRACTOR TO PROVIDE SHOP DRAWING FOR APPROVAL 1 WEEK PRIOR TO FABRICATION MINIMUM. C. MINIMUM 6" THICK WALLS, 3000 PSI CONCRETE uv D. SLOT WEIR (SEE TABLE FOR ELEVATION) E. 4' X 6" X 12" GALVANIZED STEEL CONNECTION PLATE WITH 4 J"O GAGE HOLES AS SHOWN, PROVIDE J"O X 3" QUIKBOLTS OR I It EQUAL, PROVIDE MASTIC OR WATERSTOP BETWEEN OUTLET BOX SECTIONS AS REQUIRED TO PROVIDE A WATERTIGHT SEAL. f ES-99 F. TYPICAL JOINT BETWEEN OUTLET SECTIONS, SEE G. V OUT: 674.13 I o �0 20 FEET G. SEAL BETWEEN OUTLET PIPE AND OUTLET BOX. PROVIDE MASTIC OR NEOPRENE SEAL, PATCH REMAINING SEAL WITH HYDRAULIC CEMENT. O » H. PROVIDE "0" RING OUTLET PIPE TYPICAL I_1 = 10 FEET I. PROVIDE RCP CLASS III OUTLET PIPE SEE PLAN FOR REQUIRED SIZE, INVERTS, SLOPE AND LENGTH. \ / I J. RECESS BOX A MINIMUM OF 6 INCHES INTO THE FLOTATION FOUNDATION, WITH BOTTOM OR WITHOUT K. PROVIDE FLOTATION FOUNDATION (SEE TABLE FOR DETAILS) 3000 PSI CONCRETE WITH #5 STIRRUPS FOR DOUBLE MAT ALLOW 3" CLEAR CONCRETE ALL SIDES WITH EMBEDDED OUTLET p BOX RESTING ON TOP MAT. MINIMUM #5 STIRRUPS AT 12" O.C. E.W. T&B. USE CONCRETE BRICK TO SPACE REBAR FROM \ o BOTTOM. CONTRACTOR TO GIVE PROPER ATTENTION TO ESTABLISH ELEVATION OF BOTTOM OF BOX AND NOT BOTTOM OF FOUNDATION. IF REQUIRED REBAR GRADE STAKES CAN BE SET TO ESTABLISH THE REQUIRED ELEVATION. / I L. REBAR MAT SEE N. ALL REINFORCEMENT SHALL BE GRADE 60 NEWLY FABRICATED BARS FREE OF RUST AND CORROSION. M. INFILL GROUT MINIMUM THICKNESS EQUAL TO THE WALL THICKNESS OR OUTLET PIPE. #3 GIRD 60 STIRRUP e \ / I 8" O.C. & CNR r e 79.70LF/15 RCP/0.50% - - STRUCTURE SIZE: 2' X 3' (INTERIOR) MINIMUM HICK { I \ A µ 9 ° O/ RIM ELEVATION: 681 BMINIMUM 12" EYOND PIPE a° 6$ a 6b1 UP TO PIPE - - - "I RING RCP OUTLET PIPE C -1 CLASS A FOREBAY>SANDFILTER WEIR Z RI : 678.00 CLASS A RIPRAP IN OUT: 675.47 TOP ELEVATION: 680.00 / 24.46LF/6"PVC/0.59% TOP WIDTH: 3' I WATER QUALITY/PONDING DEPTH: 680.00�i (2) #5 GIRD 60 - - - - - - - - - - - SLOT WEIR ELEVATION AND WIDTH \ SEE TABLE FOR DETAILS 9.89LF/6"PVC/0.50% 1 I I SF DS1 RIM: 681.00 INV. IN: 675.28 _ INV. OUT: 674.53 I I I I F CONCRETE SHALL BE 3000 PSI A.E.. REBAR SPLICES SHALL BE A MINIMUM OF 27". I G TO BE INSTALLED AFTER PIPE BACKFILL IS COMPACTED, CUT REQUIRED TRENCH AND CO-2 / SEDIMENT COMPLETELY FILL WITH CONCRETE. RIM: 678.00 CHAMBER _ INV. IN: 675.33 I CONTRACTOR ALTERNATE TO BE APPROVED PRIOR TO INSTALLATION. INV. IN: 675.33 SAND FILTER / SD05 ANTI-SEEP COLLAR RCP PIPE NTS INV. OUT: 675.33 CHAMBER 8.84LF/6"PVC/0.50% do 00 <� to },= *1• i it•A' cp cI, 4: co O TEN10 ( w.k,•.':n. \r ♦,1:.Wit, :ry...« CO-3 `;�:: :.1.;:. 1'. : Y'r•.fi."< I F:. ) PLAN VIEW�" I00 �'!O I "`�''•��^ "K. TAPCON SCREWS RIM: 678.00 _ � c� TO MOUNT RACK � INV. IN: 675.38 a K "~`� TO BOX INV. OUT: 675.38 I �`;:;.- ='Ill II co O P I LL Z co 23.87LF 6"PVC 0.52% I ❑❑❑❑❑❑ 'u• 0 I I o 679 �I I I _ RIPRAP APRON j wa �.v� A ❑❑❑❑❑ O❑ A V Y 6 SEE SHEET C300 FOR DETAILS (/) CO-4 FES-1 ° ° ° ❑❑❑❑❑❑ J U z RIM: 678.00 INV OUT: 680.44 �� q v a: ° 0 O M = = o a - - - - \ INV. OUT: 675 50 � � ° °a ❑❑❑❑❑❑ L� o m z a v a a O m - - _ 683 HITTER CUT PIPE TO BANK ° ❑❑❑❑❑❑ Q 0 >- o 0 FOOTING BASE ❑❑❑❑❑❑ cry 0 m 684 NOTE: CONTRACTOR TO PROVIDE SHOP SEE TABLE FOR DETAILS O O 101 DRAWING FOR APPROVAL MINIMUM 1 WEEK PRIOR TO FABRICATION 2.00' 4" X 4" OPENING 0 SAND FILTER OUTLET STRUCTURE DETAIL NTS (MAX OPENING 5.5 MIN OPENING 2") SCM ACCESS AND I / z uj MAINTENANCE EASEMENT / a 1 / aa❑ 131.90LF/18"RCP/2.20% J ❑❑❑ 3 3 SECT A-A 3 X 3 X 3/8" ANGLE as FOR THE CLEAN-OUTS, IT IS RECOMMENDED TO SPECIFY TRASH RACK CAN BE N o NOTE: MIRAFI 500X FABRIC TO BE PLACED ALL SCM EMBANKMENTS, SURROUNDING AREAS, GALVANIZED STEEL, r A PVC PIPE THAT HAS GLUED CLEAN-OUT FITTINGS WITH ALUMINUM, OR UNDER ALL RIP RAP. INCLUDING AT PIPE AND FOREBAY (SEDIMENT CHAMBER) MUST BE STAINLESS STEEL SCREW TYPE CAPS. IT IS CRUCIAL THAT THE CAP BE NOTE: SAND FILTER MDC 8 SECURE SO THAT THE STORMWATER WILL NOT LEAVE BETWEEN LOCATIONS SD AND FOREBAYR STABILIZED WITH NON-CLUMPING TURF GRASS PRIOR TO CERTIFICATION WITH THE EXCEPTION NOTE: STRUCTURE SF DS1 AND SF1 TO BE REQUIRES THAT THE SAND N � THE SAND FILTER VIA THE PIPE RATHER THAN PASSING OF THE SAND FILTER CHAMBER. THOROUGHLY CLEANED OF ALL SEDIMENT FILTER MEDIA IS MAINTAINED PEAKED-ROOF STRUCTURE TRASH RACK o AND DEBRIS UPON CONVERSION OF THE CONTRACTOR TO PROVIDE MANUF. RACK FOR APPROVAL) NTS 00 THROUGH THE SAND MEDIA AS INTENDED. IN ADDITION, SUCH THAT THE INFILTRATION . THE ENDS OF EACH UNDERDRAIN PIPE SHOULD BE NOTE: ALL CLEANOUTS PIPES MUST BE ALL AREAS WHERE PLANTING IS NOT POND FROM EROSION CONTROL PHASE RATE IS GREATER THAN OR SPECIFIED MUST FOLLOW SEEDING POND MUST BE CLEANED OUT PRIOR TO CAPPED TO PREVENT CLOGGING OF THE UNDERDRAIN CAPPED PER 15A NCAC 02H.1059 (9) SPECIFICATIONS ON SHEET C001. USE AS A WET DETENTION BASIN. EQUAL TO 2 /HR. Z SYSTEM. LLJ U N UNDERDRAIN PERFORATION SCHEDULE: EMBANKMENT J 00 N PROVIDE 4 ROWS OF PERFORATIONS AROUND THE DIAMETER (n OF THE 6" PVC PIPE. PERFORATIONS TO BE PLACED 6 J SEDIMENT CHAMBER STORMWATER CONTROL MEASURE W z INCHES ON CENTER WITHIN EACH ROW FOR THE ENTIRE SAND FILTER CHAMBER -I11=III=III=11I FREEBOARD m o LENGTH OF THE DRAINAGE LATERAL. PERFORATIONS TO BE Q U W 3/8" IN DIAMETER. FREEBOARD FOR 1- III-III-III-I I I o 100 YEAR/ 24 HOUR ELEVATION 681 .35 0.65 Z c� z 100YR/24HR STORM N =III-III-III-III 10 YEAR/ 24 HOUR ELEVATION 680.91 09 0 0 T.O.B. ELEV. (SEE TABLE) 0 oQF, =III-II-III (j�j = I I=1 I I-III-III-1 EL 100YR/24HR (SEE TABLE FOR ELEVATION)p ,� !=III-III-III i 1 YEAR/ 2 4 H O U R E L E VAT I O N 6 8 0.14 1 .86 v 1=1 I M I M I M I 1=1 I EL 10YR/24HR (SEE TABLE FOR ELEVATION)s -=111=1 I I-I 11- a o I_=III=I =III=-1 I =1 I 1=III 3.00' EL 1YR 24HR SEE TABLE FOR ELEVATION - _ =III-III-I WATER QUALITY/PONDNG ELEVATION 680.00 Ll 1-I I I-I I I-1 11-1 I I-1 I I-I I I-1 11-1 I I-IIa. WATER QUALITY EL__ _ � uj 1=1 11=1 11=111 E III=1 11=1 11=1 I 1=III I I I III I Io, (SEE TABLE FOR ELEVATION) 1 - - - - - I I- _ OUTLET STRUCTURE DETAILS N III-III III II III-III III III- II II1 _ z -III-�-III- -III-�-III I -III=III= I I I-III-I I ME RIM I I-III-III-III-III-I I-III RIM E L E VAT ION 6 81 .0 0 -� I I-1 11= I I 1 I I- 11-I 11- I 1-I I I- I I:III-' i 1=1 I , 11 1=1 11=1 1 1-I 11=1 I I-I i�-III-III-III- SCOT WEIR ELEVATION (D) 680.00 -III-I I I-' ' SLOT WEIR WIDTH (D) 2.00' 1I- ''. //��// OUTLET STRUCTURE SIZE 2.00' x 3.00' 0 ENGINEERS SEAL STRUCTURE FOOTING DETAILS (K) -I I -111-I I I-1 I I 1 1 -1 I I- N CLASS A FOREBAY>SANDFILTER WEIR 11 IFOOTING LENGTH- ANTI FLOTATION FOUNDATION CLASS A RIPRAP �.` CA TOP ELEVATION: 680.00 �� , (SEE TABLE FOR DETAIL) EL 674.00 SHWT TOP WIDTH: 3' FOOTING WIDTH 4.00 `_� O s 6" PVC DRAIN LINE FOOTING DEPTH 2.00 `Q FS S° �1=9 PVC CLEANOUT (TYP) 2 FT. VERTICAL SEPARATION 24" THICK SAND FILTER MEDIA SAND FILTER DETAILS 4t, & BETWEEN SEASONAL HIGH WATER CLEANED, WASHED COURSE MASONRY SAND. TOP OF BANK ELEVATION 682.00 TABLE AND LOWEST INVERT ASTM C33 OR EQUIVALENT. SAND PARTICLES TO '., GINS 1% ELEVATION OF SAND FILTER BE LESS THAN 2 MM AVERAGE DIAMETER of UNDERDRAIN TOP OF RIP RAP WEIR ELEVATION 680.00 %,��/�/Ew•v�`�.`�� MIN 3" WASHED #57 STONE ABOVE AND ON ALL SIDES OF PERFORATED UNDERDRAIN. TOP OF SAND FILTER MEDIA 678.00 WRAP STONE IN FILTER FABRIC PERFORATED PVC UNDERDRAIN ALL DAM CONSTRUCTION TO BE MONITORED MINIMUM BOTTOM OF SAND FILTER MEDIA 676.00 SEE UNDERDRAIN PERFORATION SCHEDULE AND INSPECTED BY GEOTECHNICAL ENGINEER AND DESIGN ENGINEER NTS SF1 - SAND FILTER 1 SCM CROSS SECTION C320