HomeMy WebLinkAboutC4.1_Drainage Details CONCRETE SIDEWALK OBSERVATION WELL LA
PER ACHD SUPPLEMENTAL SD-709. PER ACHD SUPPLEMENTAL SD-627, SEE DETAIL 2, THIS SHEET. 0
SEE DETAIL 2, SHEET 5.2. G�
AND SHALL EXTEND 1' BELOW SAND LAYER II\ O
OBSERVATION WELL � M
3" ROLLED CURB AND GUTTER 18" ADS N12 OR APPROVED EQUAL PERFORATED DRAIN PIPE PER ACHD SUPPLEMENTAL SD-627, SEE DETAIL 2, THIS SHEET. Q
PER ACHD SUPPLEMENTAL SD-702. SEE PERFORATION DETAIL 1A, THIS SHEET. PER ACHD SUPPLEMENTAL SD-709. PLACE WOVEN FILTER FABRIC ON TOP ONLY WITH AND SHALL EXTEND 1'CONCRETE SIDEWALK 00 00 O BELOW SAND LAYER 18" END CAP
SEE DETAIL 1, SHEET 5.2. 1' OVERLAP AT ALL SEEMS. SEE NOTE 5 BELOW. w s T"I V
PLACE WOVEN FILTER FABRIC ON TOP ONLY WITH SEE DETAIL 2, SHEET 5.2.
N. LAPIS AVE. ROAD SECTION 1' OVERLAP AT ALL SEEMS. SEE NOTE 5 BELOW.
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`STRUCTURAL FILL / / 1"4 M
j 6"-8" MINUS PIT RUN STRUCTURAL FILL
ELEV: 2610.35, i 6"-8" MINUS PIT RUN ^ Go
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/\ 018" SOLID SD 18" PERF SD
PIPE INV: 2608.35 N m
m 0 0 0 0 �� SEE CROSS SE ION CT
_ PLACE NONWOVEN FILTER FABRIC ON TOP, ENDS AND C5' FOR PIPE INVERTS
O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O
O SIDES ONLY WITH V-0" MIN OVERLAP AT ALL SEAMS.
elfO O O O O O O '/��`\ SEE NOTE 5 BELOW. \ 2" WASHED Z
O O O O O O O O O O O O O O O O O O O O O O O O � DRAIN ROCK O O O O O O O O O O O O O O O O O O O O O O O O
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BOTTOM OF BED ELEV: 2604.35 /�\`� C C C C C '/
U III'\J\, C33 FILTER SAND PLACE NONWOVEN FILTER FABRIC ON TOP, ENDS AND ` O
y C33 FILTER SAND 18" TYPICAL iA`
ELEV: 2602.85y1?0
18" TYPICAL SIDES ONLY WITH 1'-0" MIN OVERLAP AT ALL SEAMS. / •� CJ
/ SEE NOTE 5 BELOW. 80 z
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o ELEV: 2599.85+ LU
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E CROSS SECTION PROFILE
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Z 1. DESIGN INFILTRATION RATE IS 8 IN/HR, AS REPORTED IN THE GEOTECHNICAL ENGINEERING REPORT PREPARED BY ATLAS 45• 45• w
0 TECHNICAL CONSULTANTS, LLC, TITLED "GEOTECHNICAL INVESTIGATION PROPOSED TOWNHOMES, 2315 SOUTH BROADWAY
Z AVENUE, BOISE, ID," DATED MAY 23, 2022.
Lwu 2. THE ABOVE REFERENCED GEOTECHNICAL ENGINEERING REPORT INDICATES THAT GROUNDWATER WILL BE ENCOUNTERED AT 45• 45' NAL
DEPTHS IN EXCESS OF 15 FEET BELOW GROUND SURFACE. GROUNDWATER DEPTH SHOWN ON THIS DETAIL IS BASED ON THE SS�O E'1'c,
HIGHEST EXISTING GROUND ELEVATION WITHIN THE SEEPAGE BED AREA ADJUSTED DOWN THE ANTICIPATED MINIMUM \STERF
w GROUNDWATER DEPTH BELOW GROUND SURFACE.
LU 3. CONTRACTOR SHALL NOTIFY THE ENGINEER IMMEDIATELY IF GROUNDWATER IS ENCOUNTERED WITHIN 3' OF THE BOTTOM
DESIGN ELEVATION FOR ANY INFILTRATION FACILITY AND/OR IF IT IS HIGHER THAN ANTICIPATED.
w O 4. MAINTAIN MINIMUM 3' SEPARATION DISTANCE FROM TOP OF SAND LAYER TO SEASONAL HIGH GROUND WATER.
5. WOVEN AND NON-WOVEN FILTER FABRICS SHALL MEET THE REQUIREMENTS OF THE ACHD STORM WATER DESIGN MANUAL ACHD SEEPAGE BED NOTE: 3/8" PERFORATIONS IN VALLEYS 9� P�O
O OF CORRUGATED PIPE. OF
Z SECTION 8200 (FABRICS COVERED UNDER CURRENT SECTION 8202.23). SEE SPECIFICATION, THIS SHEET. 1 4�, F �0
6. 100 YEAR STORAGE VOLUME + 25% = 2,930 CF, VOLUME PROVIDED = 2,944 CF SCALE: NTS NT D. ADP�`S
� 7. SEE ACHD STORMWATER DESIGN GUIDELINES, BMP 20, SEEPAGE BED WITH OPTIONAL CHAMBERS, SHEET 1 OF 3 FOR 1A PIPE PERFORATION SCHEDULE
ADDITIONAL DETAILS. SEE DETAIL 3, THIS SHEET.
w 8. CONTRACTOR TO COORDINATE WITH ACHD INSPECTION FOR THE PLACEMENT OF ELECTRONIC MARKERS AT THE CORNERS OF SCALE: NTS
EACH BED. MARKERS SUPPLIED BY ACHD FOR $20 EACH. PAYMENT FOR MARKERS IS DUE PRIOR TO PLAN APPROVAL. LU z in m o 0
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O SAND/GREASE TRAP (ISPWC SD-624) OR B
SEDIMENT MANHOLE (ISPWC SD-61 1) 5 36..
1 2 FINISH GRADE 18" DIA. CORRUGATED HDPE IF INSTALLED WITH CHAMBERS/ o
C0 2' RING COVER PER OR PVC PIPE PERFORATED PER CHIPS, INSTALL WOVEN 28" 3
Z _ ISPWC SD-617 PERFORATION SCHEDULE GLOTEXTILE TO SEPARATE CHIPS 6
w - -'` ' AND DRAW ROCK
=! - 8 a I-I € € - �= ; - r,. (TYP) TREES & SHRUBS 1
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Z0 5' OF 18" SOLID ASTM C33 ;.::.:: ASTM C33 SECTION B-B
O F 4„ WALL PIPE WITH 1.5-FT 1
`':•.:FILTER SAND.':,--"".:.' ~;''FILTER SAND;`' Ly
Q 4 OF PIPE BEDDING3-FT N.T.S.
ILL A �. -A. :j 1 ` a 00 NONWOVEN FILTER FABRIC. OVERLAP TRANSITION' 5-FT IN -MAX HSG;W B
•"'.• MINIMUM OF 1-FT TOP AND BED NON-PERFORATED ELEVATION
O z --UIISIDES ONLY TO PERFORATED PIPE TOP VIEW
o W 3 SECTION
N.T.S. 8" RADIUS UP TO INLET CATCH
w NOTES: BASIN, SEE ROLLED CURB SD-702.
"' 11 SECTION CONCRETE COLLAR 1. BMP 1-4 OR VEGETATED PRETREATMENT IS REQUIRED. HAND FORM RADIUS AT 6 18" 4
LU < N.T.S. 2. CONTACT DESIGN PROFESSIONAL FOR SEEPAGE BED REDESIGN IF GROUNDWATER IS ENCOUNTERED ABOVE INLET CATCH BASIN TO FIT 2" 3
' ' MAX HSGW ELEVATION 4^
3. ALL VAULTS, MANHOLES, & SAND AND GREASE TRAPS SHALL BE HS25 OR GREATER LOAD RATED 5 1/2
O 4. SEEPAGE BED SHALL BE SHOWN ON BOTH PLAN AND PROFILE VIEWS
U L'' a a 5. OPTIONAL CHAMBERS PER MANUFACTURERS SPECIFICATIONS
6. ALL GEOTEXTILE SEAMS SHALL OVERLAP 1 FOOT MINIMUM z 2" LIP-
7. I 4 -
_ EL. IN >= EL. BOTTOM PERFORATIONS IN 18" PERF PIPE z
8. MAXIMUM BED LENGTH IS 400-FT BETWEEN MANHOLES 5
9. BED WIDTH SHALL REMAIN CONSTANT w '. 2"
w 10. WATERTIGHT CONNECTION REQUIRED Q a2% MIN
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>_ 11. HIGH FLOW BYPASS PIPE ONLY NEEDED IF 0100 VELOCITY THROUGH STRUCTURE > 0.5 FPS a� SLOPE
Z o :COVER NOTES LEGEND
Q � o FOR SEEPAGE BEDS OUTSIDE PUBLIC RIGHT-OF-WAY: O
CD 1. A MINIMUM 1.5-FT COVER FROM TOP OF BED TO FINISH GRADE IS REQUIRED O ADJOINING TOP of CURB. �■■�
o CATCH
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FOR SEEPAGE BEDS IN PUBLIC RIGHT-OF-WAY: OouTLEr. , AREA VJ
w I 1. A MINIMUM 1.0-FT COVER FROM TOP OF BED TO PAVEMENT SUBGRADE IS REQUIRED O3 PAVEMENT SURFACE. 2
w F' --BACKFILL OVER BED TO SUBGRADE WITH 6"-8" MINUS PITRUN
0 --WOVEN GEOTEXTILE FABRIC REQUIRED OVER TOP OF BED ®SEENSDR609RORESDN610AATE FRAME, O
Z --TOP OF BED UNDER SIDEWALK SHALL BE MIN 1.0-FT BELOW PAVEMENT SUBGRADE '■■'
w SECTION 2. IF < 1.0-FT COVER FROM TOP OF BED TO SUBGRADE, ANGULAR J" TO 2" ROCK IS REQUIRED WITH O STANDARD ROLLED CURB AND GUTTER. 8" 1 -2 6
w N-T-S- MINIMUM 50% SINGLE FRACTURED FACE IN PLACE OF 2" DRAIN ROCK. 4" X 4" X 3/8" ANGLE IRON 2'-�"
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0 3. FULL ROADWAY SECTION IS REQUIRED OVER SEEPAGE BEDS. SEEPAGE BEDS SHALL NOT EXTEND ABOVE Q j
w SUBGRADE O(3) 7" NO.4 BARS CIO
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> 4. THE DESIGN PROFESSIONAL IS SOLELY RESPONSIBLE FOR ASSESSING THE BEARING RESISTANCE OF THE g EDGE OF GUTTER SECTION A-A
01f SUBGRADE SOILS AND DETERMINING THE DEPTH OF FOUNDATION STONE 0 = ice4
ILLN.T.S.
O SEE BMP 20 SHEET 2 OF 3 FOR ADDITIONAL NOTES VJ V W
w 2017 ACHD REVISION Uj ~
2017 ACHD REVISION
IDAHO STANDARDS I M I T Uj
201 SEEPAGE BED W T H STANDARD DRAWING V (� V1
w FOR PUBLIC WORKS G R 0 U I V D A I E R STANDARD DRAWING ACHD S GORMWANES DESIGN p � P �O IDAHO STANDARDS INLET CATCH BASIN STANDARD DRAWING
CONSTRUCTION T �BSE \IATION WELL SD-- 7 OPTfONAL CHAMBERS SHEET 1 OF 3 FOCONSTRUCTIONRIKs TYPE IV (FOR ROLLED CURB N0 SD - 604A J W Z
� (ACHD SUPPLEMENT) 1 OF 2 (ACHD SUPPLEMENT) 1�1
ACHD BMP 20 a LA
:E - 3 TYPE IV CATCH BASIN
SCALE. NTSZD
4 M Q
SCALE: NTS V N
LEGEND Non-Woven Filter Fabric
z_ WELL COVER, 8" DIA. WATERTIGHT GALVANIZED STEEL BOLT DOWN COVER AND CANISTER Property Test Method English W
cn s 2 OR 3 BOLT LID WITH 9/16- HEAD AND SAE THREADS, GASKITTED Tensile Strength (Grab) ASTM D-4632 120 lbs
_ CONCRETE (COLLAR), CLASS 3000 (ISPWC SECTION 703)
3/8" DIA HOLES OR SLATS CUT INTO PIPE AT 3" ON CENTER Elongation ASTM D-4632 50%
0 5 Puncture ASTM D-4833 65 Ibs
0 TRACER WIRE SHALL BE PLACED ON OUTSIDE OF PVC PIPE, MINIMUM 18 GAUGE. INSULATED, SINGLE-
CONDUCTOR COPPER WIRE, INSULATION COLOR SHALL BE GREEN WITH THREE 6" DIAMETER COILS Trapezoidal Tear Strength ASTM D-4533 50 Ibs
(D PIPE SHALL BE PERFORATED PVC, ASTM D-3035, SDR 35. WELLS BACKFILLED IN A PIT REQUIRE 6" UV Resistance ASTM D-4355 70%
w PIPE. DRILLED WELLS MAY USE 4" PIPE Apparent Opening Size �■■�
z (D NONWOVEN FILTER FABRIC AROUND OPENINGS AND BOTTOM, FABRIC OVER QHIF5/DRAIN ROOK (AOS) ASTM D-4751 70 US Std. Sieve
POLYPROPYLENE FIBER REIJFOIce
RCEMENT AT 1 1/2 LBS/CY Permittivity ASTM D-4491 1.50 sec-1
:Z CD BACKFILL MATERIAL TO MATCH STORAGE MEDIA FOR OBSERVATION WELLS LOCATED WITHIN A BMP FACILITY.LU Water Flow Rate ASTM D-4491 120 gpmlft2
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USE PIPE BEDDING CHIPS FOR OBSERVATION WELLS LOCATED OUTSIDE BMP FACILITIES
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LU Woven Fabric NOT APPROVED FOR
w NOTES: Property Test Method English
> 1. GROUNDWATER OBSERVATION WELLS ARE FOR MEASUREMENT OF GROUNDWATER LEVELS WITHIN OR NEAR th Tensile Strength Grab ASTM D-4632 Min 250 Ibs
STORM DRAINAGE FACILITIES g (Grab)
co 2. THIS DETAIL I5 FOR WELLS INSTALLER BY DRILLING OR BY EXCAVATED PITS Puncture Strength or CBR ASTM D-4833 or CONSTRUCTION
c\i Min 125 Ibs or Min 950 Ibs
03. LOCATION OF GROUNDWATER OBSERVATION WELLS SHALL BE APPROVED BY ACHD Puncture ASTM D-6241
4. OBSERVATION WELLS NOT ALLOWED IN CURB OR VALLEY 'GUTTER SECTION UV Resistance ASTM D-4355 Min 80%
AOarent Opening Size ASTM D-4751 70 US Std. Sieve DATE:
OCTOBER 2023
GROUNDWATER OBSERVATION WELL Water Flow Rate ASTM D-4491 Min 18 mlft2 PROJECT: 22040
ov 2 Percent Open Area CW-02215 Min 4%
� SCALE: NTS SHEET 4.1 OF 12
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