HomeMy WebLinkAboutC2.50 ACHD Drainage Details Sheet Notes: ��
1. IF GROUNDWATER IS ENCOUNTERED THEN THE CONTRACTOR SHALL dw /
T H E
OUTLET INLET PIPE SEE PLANS FOR PIPE
SAND/GREASE TRAP (ISPWC SD-624) OR NOTIFY THE ENGINEER AS SOON AS POSSIBLE FOR REDESIGN OF
SEDIMENT MANHOLE (ISPWC SD-61 1) CONFIGURATION SIZES AND REQUIREMENTS (TYP.) DRAINAGE FACILITY TO PROVIDE 3'MIN. CLEARANCE BETWEEN LAND
18" DIA. CORRUGATED HDPE IF INSTALLED WITH CHAMBERS/ FINISH GRADE GROUNDWATER AND THE BOTTOM OF THE FACILITY. UNTIMELY �■r GROUP
2' RING & OR PVC PIPE PERFORATED PER CHIPS, INSTALL WOVEN NOTIFICATION OF THE ENGINEER MAY RESULT IN ADDITIONAL COSTS TO
COVER PER PERFORATION SCHEDULE GEOTEXTILE TO SEPARATE CHIPS THE CONTRACTOR.
ISPWC SD-617 `� ;,
AND DRAIN ROCK
(NP) TREES & SHRUBS 00
-III III=III=III o Q. e
ARE NOT PERMITTED -I I-III=III=11 >_ 2. BOTTOM OF SAND LAYER ELEVATION IS THE MINIMUM EXCAVATION.
OBSERVATION = I=i � i_ -III-III=11 0 , b , o , 4 , o
ON TOP OF SEEPAGE WELL -IIIIIIIIIIIIII�II IIIIIIIII- III= o_
0 0
BED III-III III-III Q °
rM ELEV BOTTOM PERF <= EE COVER
I=1II=1I III-III- � � E Q
\\ /\\//\/\\\/\ III-III, „IIL-,11 3 co ',",>_°`,",,. AP �"` ° "•
ELEV BOTTOM BAFFLE NOTES //\/\\\ \� \\/ ` o e Q Groundwater Note:
\ \ o PLAN
0 0 0 0 O O 0 0 O O O O O C O
5' 1 g" 1. GROUND WATER DATA FOR THIS SITE IS BASED UPON ATLAS
SEE a o 0 0 0 0 o a o 0 0 0 0 0 \i\\/\\\�\i\\�\\
NOTE 1 1 STD \\� NATIVE" \� 3 GEOTECHNICAL INVESTIGATION REPORT DATED JANUARY 31, 2022 FILE
0% SLOPE 0% SLOPE /\\� \,\\, s 12" MAXIMUM GRADE RINGS. IF GREATER THAN 12" N0. B211945G AND ADDENDUM #1 DATED JANUARY 16, 2023.
SOIL �\ PLAN CONCRETE COLLAR IS REQUIRED USE MANHOLE CONE SECTIONS.
N.T.S.
U RIM: (E) 9" MIN.
\\/NATIVE/\\/ \/\ \\/ 2" WASHED VARIES-SEE 2" WASHED \\/\\\�\/\/\\ \\
\\\� DRAIN R�O�CK PLAN SHEETS pRgvvK' /\� FINISH GRADE VARIES
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TOP: (F)
5' OF 18" SOLID
ASTM C33 °;; ...,-: ASTM C33 >
WALL PIPE WITH :; 1.5-FT _
FILTER SANDS:*`.-' FILTER SAND;:; (B)
18
4" OF J„ PIPE BEDDING ': .~: ::... .:;..... .. .. ::..: .. . ... ... . ... .,... 3-FT m (C)
NONWOVEN FILTER FABRIC. OVERLAP TRANSITION 5-FT IN� INV.-IN:(A) INV-OUT: (D)
ELEVATION r
MINIMUM OF 1-FT TOP AND BED NON-PERFORATED o JIG VARIES
SIDES ONLY TO PERFORATED PIPE III II
z
SECTION X a ill lil 3 y
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NOTES: N.T.S. SAND AND GREASE TRAP
1. BMP 1-4 OR VEGETATED PRETREATMENT IS REQUIRED. w 6 SECTION CONCRETE COLLAR (PER ACHD SD BMP-01)
2. CONTACT DESIGN PROFESSIONAL FOR SEEPAGE BED REDESIGN IF GROUNDWATER IS ENCOUNTERED ABOVE < N.T.S.
MAX HSGW ELEVATION
3. ALL VAULTS, MANHOLES, & SAND AND GREASE TRAPS SHALL BE HS25 OR GREATER LOAD RATED
4. SEEPAGE BED SHALL BE SHOWN ON BOTH PLAN AND PROFILE VIEWS 4
5. OPTIONAL CHAMBERS PER MANUFACTURERS SPECIFICATIONS w ACHD SAND AND GREASE TRAP 0
6. ALL GEOTEXTILE SEAMS SHALL OVERLAP 1 FOOT MINIMUM
7. EL. IN >= EL. BOTTOM PERFORATIONS IN 18" PERF PIPE o oSG ELEV ELEV ELEV ELEV BAFFLE Qwq
8. MAXIMUM BED LENGTH IS 400-FT BETWEEN MANHOLES GALLON
9. BED WIDTH SHALL REMAIN CONSTANT 9 NO A B C D SPACING CfS
10. WATERTIGHT CONNECTION REQUIRED ° ° 3 1000 2549.29 2549.16 2548.66 2548.44 18 1.28
11. HIGH FLOW BYPASS PIPE ONLY NEEDED IF Q100 VELOCITY THROUGH STRUCTURE > 0.5 FPS ° ° 4 1000 2551.18 2551.08 2550.58 2550.33 18 2.39
COVER NOTES:FOR SEEPAGE BEDS OUTSIDE PUBLIC RIGHT-OF-WAY:
1. A MINIMUM 1.5-FT COVER FROM TOP OF BED TO FINISH GRADE IS REQUIRED 00
FOR SEEPAGE BEDS IN PUBLIC RIGHT-OF-WAY: L-.. o-.
1. A MINIMUM 1.0-FT COVER FROM TOP OF BED TO PAVEMENT SUBGRADE IS REQUIRED g"
--BACKFILL OVER BED TO SUBGRADE WITH 6"-8" MINUS PITRUN
--WOVEN GEOTEXTILE FABRIC REQUIRED OVER TOP OF BED CA
--TOP OF BED UNDER SIDEWALK SHALL BE MIN 1.0-FT BELOW PAVEMENT SUBGRADE SECTION
2. IF < 1.0-FT COVER FROM TOP OF BED TO SUBGRADE, ANGULAR J" TO 2" ROCK IS REQUIRED WITH 1000 Gallon Sand & Grease Trap Details ,C
MINIMUM 50% SINGLE FRACTURED FACE IN PLACE OF 2" DRAIN ROCK. N.T.S.
3. FULL ROADWAY SECTION IS REQUIRED OVER SEEPAGE BEDS. SEEPAGE BEDS SHALL NOT EXTEND ABOVE
SUBGRADE Scale: NTS ■
4. THE DESIGN PROFESSIONAL IS SOLELY RESPONSIBLE FOR ASSESSING THE BEARING RESISTANCE OF THE cc
SUBGRADE SOILS AND DETERMINING THE DEPTH OF FOUNDATION STONE
SEE BMP 20 SHEET 2 OF 3 FOR ADDITIONAL NOTES
2017 ACHD REVISION c
2017 SEEPAGE BED WITH STANDARD DRAWING
ACHD STORMWATER DESIGN FORHPUBL PUBLIC WORKS GROUNDWATER O U N D WAT E R Roo
GUIDELINES OPTIONAL CHAMBERS BMP 20
STANDARD DRAWING
SHEET 1 OF 3 CONSTRUCTIONmime
(ACHD SUPPLEMENT) OBSERVATI O N WELL S D - 6 27 O
1 OF 2
LEGEND
SEEPAGE BED SCHEDULE WELL COVER, 8" DIA. WATERTIGHT GALVANIZED STEEL BOLT DOWN COVER AND CANISTER
BED DRAINAGE TOP OF BOTTOM BOTTOM lJ 2 OR 3 BOLT LID WITH 9/16" HEAD AND SAE THREADS, GASKETED
SG TRAP RIM ELEV LENGTH WIDTH DEPTH V100 O CONCRETE (COLLAR), CLASS 3000 (ISPWC SECTION 703)
NO. AREA ROCK OF ROCK OF SAND O 3/8" DIA HOLES OR SLOTS CUT INTO PIPE AT 3" ON CENTER Q
O TRACER WIRE SHALL BE PLACED ON OUTSIDE OF PVC PIPE, MINIMUM 18 GAUGE, INSULATED, SINGLE-
1 0.55 AC SG 03 2552.28 2550.50 2547.10 2545.60 276 15 3.40 1709 CF CONDUCTOR COPPER WIRE, INSULATION COLOR SHALL BE GREEN WITH THREE 6" DIAMETER COILS 0
0 PIPE SHALL BE PERFORATED PVC, ASTM D-3035, SDR 35. WELLS BACKFILLED IN A PIT REQUIRE 6" z 2 1.03 AC SG 04 2553.35 2550.89 2549.89 2548.39 114 15 2.50 3197 CF PIPE. DRILLED WELLS MAY USE 4" PIPE
OO Q
NONWOVEN FILTER FABRIC AROUND OPENINGS AND BOTTOM, FABRIC OVER CHIPS/DRAIN ROCK O ■
O POLYPROPYLENE FIBER REINFORCEMENT AT 1 1/2 LBS/CY
O BACKFILL MATERIAL TO MATCH STORAGE MEDIA FOR OBSERVATION WELLS LOCATED WITHIN A BMP FACILITY. w
USE PIPE BEDDING CHIPS FOR OBSERVATION WELLS LOCATED OUTSIDE BMP FACILITIES
NOTES:
Revisions
1. GROUNDWATER OBSERVATION WELLS ARE FOR MEASUREMENT OF GROUNDWATER LEVELS WITHIN OR NEAR
STORM DRAINAGE FACILITIES 1•
2. THIS DETAIL IS FOR WELLS INSTALLED BY DRILLING OR BY EXCAVATED PITS
3. LOCATION OF GROUNDWATER OBSERVATION WELLS SHALL BE APPROVED BY ACHD
4. OBSERVATION WELLS NOT ALLOWED IN CURB OR VALLEY GUTTER SECTION
ACHD Seepage Bed Detail 2 Groundwater Observation Well Detail
1 Scale: NTS Scale: NTS
NOTES:
1. INSTALL ELECTRONIC MARKERS ON EACH CORNER OF THE FACILITY. COORDINATE WITH ACHD INSPECTION FOR
PLACEMENT OF THE MARKERS DURING CONSTRUCTION PRIOR TO BACKFILLING.ACHD TO SUPPLY THE DEVICES.
2. ACHD STAFF MUST VERIFY THE INFILTRATION RATE AFTER THE FACILITY IS FULLY EXCAVATED DESIGN RATE IS
0.50-IN PER HOUR.
�S��ONAL
10961
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9SON DEN
07/Z3/2-02.5
Project No.: 124186
Date of Issuance: 07-23-2025
Project Milestone: FINAL PLAT SUBMITTAL
ACHD Drainage Details
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