SW3231005_Plansheet - SCM Detail_20240820

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PROTECTION
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1. MORTAR JOINTS = 1/2" t1/8" THICK. V V`"' v a U_ 3
ALL PIPE OPENINGS TO BE MORTARED AT INVERTS.
2. ALL CONCRETE TO BE 3600 P.S.I.
MINIMUM 577 SF 3. THE POURING OF BASE SLAB TO BE ACCOMPLISHED BY FORMING. ❑PRELIMINARY NOT
SURFACE AREA 4. ALL CATCH BASINS OVER 3'-6" IN DEPTH SHALL BE PROVIDED FOR CONSTRUCTION
WITH STEPS AT 1'-2" ON CENTER VERTICALLY.
SAND FILTER
CLEANOUT PVC PIPE 5. CONCRETE BLOCK OR JUMBO BRICK WILL BE PERMITTED.STRUCTURE MAY BE PRECAST ❑ISSUED FOR
INTEGRAL
TO BE CAPPED WITH WEIR PLATE CONTRACTOR SHALL PROVIDE SHOP DRAWINGS..P BIDDING a)
SCREWED WITH GLUED FOR 8'-0" IN DEPTH OR LESS USE 8" WALL. OVER 8'-0" ISSUED FOR
FITTINGS OF SCREW 6 PERFORATED UNDERDRAIN 6. IN DEPTH USE 12" WALL TO 6 FT. FROM TOP OF WALL, AND PERMIT
WRAPPED IN FILTER FABRIC 8" WALL FOR THE REMAINING 6 FT. OF WALL. Q
TYPE. WITH CLEANOUTS ON BOTH 7. ALL PIPE IN DROP INLET STRUCTURE SHALL BE STRUCK EVEN ■ISSUED FOR
WITH THE INSIDE WALL, GROUTED AND BRUSHED SMOOTH. CONSTRUCTION
ENDS 8. DRAINAGE AREA MUST BE STABILIZED BEFORE FILTRATION
CONTROLS AND FILTER MEDIA ARE INSTALLED
ACCESS MH
776, 4'X6' (INSIDE) PRE-CAST VAULT Q
C�0 6" THK. WALLS, MIN, W/ MH COVERS Z
00 CLEANOUT PVC PIPE AND STEPS BOTH SIDES AT 18"O.C. J
A 0 �� TO BE CAPPED WITH<,qT0
SCREWED WITH GLUED 6' Q:f
2(TWO) SECTIONS OF 11 6' LONG O% SLOPE, TOTAL 232': � FITTINGS OF SCREW Q
128" X 83" ALUMINIZED TYPE I STEEL ARCH PIPE (ASTM ���� TYPE. MH RIMS: 766.10 0
A760)(AASHTO M36) BY LANE ENTERPRISES OR �� INSIDE TOP Box
764.78
APPROVED EQUIVALENT. GAUGE THICKNESS TO BE ���� 4' MASONRY WEIR @ 763.69
m
DETERMINED BY MANUFACTURER, SHOP DRAWING ��\� CENTERED IN 6' SIDE OF BOX
SUBMITTAL REQUIRED FOR APPROVAL. INSTALLATION IS❑METRIC VIEW
SHALL BE IN ACCORDANCE WITH PIPE SUPPLIER OF ONE SECTI❑N 82 ��� 3 Q Z
SPECIFICATIONS AND DETAILS INCLUDING PIPE OF SAND
' �� 6 CMA 36" CMP FROM �
BEDDING AND PROTECTION FROM CONSTRUCTION FILTER/DETENTI❑N >_
10 � DETENTION INV=759.21
LOADING. MINIMUM 1 .5' COVER BENEATH 6" REINFORCED /N� 10 6"PVC @ 759.21 Q
CONCRETE. ALL JOINTS IN STEEL PIPE SHALL BE O-RING \�ss2s / 1 I— Z
WATERTIGHT AND OUTLET CONTROL STRUCTURE �� ��� - - O
JOINTS SHALL BE WATERTIGHT. 24"RCP U
1
6"SOLID PVC @ 0.5% _/INV=75 .20 Z
BTWN PIPE AND BOX ° ° INV= 756.2 Q
763.69 763.69 °
9'X9'X2' DEEP Q
a . 'd CONCRETE DEADMAN
4.
BY FORMING.SEE
ANCHOR FASTN. DTL.
6" STONE BASE
ti511141 4 � Y.�
CONTROL BOX
NOT TO SCALE
10725
SHOP DRAWING SUBMITTAL REQUIRED FOR APPROVAL. `°'" "'�'
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9.9' 7.44'
3-24" CMP 3 M I N.' NOTES: wz
CARRIER 1. CLASS OR MEDIAN SIZE OF RIPRAP AND LENGTH, WIDTH AND DEPTH OF APRON END OF FLARED SECNON
TO BE DESIGNED BY THE ENGINEER.
PIPES 2. REFER TO THE CHARLOTTE MECKLENBURG STORM WATER DESIGN MANUAL FOR
RIPRAP APRON DESIGN STANDARDS.
3. RIPRAP SHOULD EXTEND UP BOTH SIDES OF THE APRON AND AROUND THE END
NO WEIR PLATE INVERT. OF THE PIPE CULVERT AT THE DISCHARGE OUTLET A MAXIMUM SLOPE OF
2U AND A HEIGHT NOT LESS THAN TWO THIRDS THE PIPE DIAMETER OR
CULVERT HEIGHT.
REQUIRED ON 2 N D PIPE EL- 757.75 SAND E L: 757.75 4. THERE SHALL BE NO OVERFLOW FROM THE END OF THE APRON TO THE
SURFACE OF THE RECEIVING CHANNEL. THE AREA TO BE PAVED OR RIPRAPPED
SHALL BE UNDERCUT SO THAT THE INVERT OF THE APRON SHALL BE AT THE
SAME GRADE (FLUSH) WITH THE SURFACE OF THE RECEIVING CHANNEL. THE
APRON SHALL HAVE A CUTOFF OR TOE WALL AT THE DOWNSTREAM END. ..
i B B
5. THE WIDTH OF THE END OF THE APRON SHALL BE EQUAL TO THE BOTTOM 9 -
WIDTH OF THE RECEIVING CHANNEL MAXIMUM TAPER TO RECEIVING CHANNEL 51
SEDIMENT CHAMBER(FORE BAY) I I 6. ALL SUBGRADE FOR STRUCTURE TO BE COMPACTED TO 95% OR GREATER.
_ T. : 7. THE PLACING OF FILL, EITHER LOOSE OR COMPACTED IN THE RECEIVING I wl I �I
- - CHANNEL SHALL NOT BE ALLOWED. END of APRON W
NV: 756.25 (T I NV: 756.25 B. NO BENDS OR
ES IN THE HORIZONTAL ALIGNMENT OF THE APRON WILL BE PLAN
9. FILTER FABRIC SHALL BE INSTALLED ON COMPACTED SUBGRADE PRIOR TO
PLACEMENT OF RIP RAP. LLJ
18"SAND FILTER MEDIA 10. ANY DISTURBED AREA FROM END OF APRON TO RECIEVING CHANNEL 0 x SLOPE_
6" PERFORATED PVC MUST BE STABILIZED.
(ASTM C- 33 OR WRAPPED IN FILTER _
USE USDA NOMOGRAPH FROM NC SEDIMENT AND EROSION CONTROL MANUAL OR t'MIN•
EQUIVALENT) CHARLOTTE MECKLENBURG STORM WATER DESIGN MANUAL FOR DESIGN DATA. t'MIN.
1 FILTER FABRIC UP
FABRIC
OUTLET LO Wl W2 "'T H ELEVATION (IF NEEDED)
1 12' 14' 3' 1.125' 1.34'
NATURAL GRADE
RIP RAP
LH 7'
12 8 ' x 8 3 '
12 8 ' x 8 3 T(THICKNESS)=10"MIN.
• d50 (see fig 8.06 a&b "NC SEDIMENT AND EROSION CONTROL MANUAL"
NOMINAL PIPE dmax - 1.5xd50
NOMINAL PIPE T= 1.5 X dmax. NOTE: LAYER OF FILTER FABRIC
T(min.)-10" MINIMUM H�2/3 PIPE DIAMETER
SECTION B-B
ARCH RIPRAP APRON AT PIPE OUTFALLS
ARCH C 4 . 4
UPSTREAM OTHER THAN AT SWIM
DOWNSTREAM