HomeMy WebLinkAboutSD.3_STORM DRAIN - DETAILS 16213 N. Cloverdale Rd. Suite 125 Boise, Idaho 83704 t.208.846.8955f.208.846.8956c.208.867.3954ross@ericksoncivil.com erickson civil DATE NO. REVISION PREPARED BY:PROJECT MANAGER:JOB NUMBER:PH: (208) 846-8955 FAX:(208) 846-8956 DRAWN BY: ERICKSON CIVIL, INC.- RKESHEET NUMBER:SHEET TITLE: DATE:
IDB2355OWNER:PROJECT TITLE:SAGARRA SUBDIVISION PHASE 1MERIDIAN, ID SAGARRA PHASE 1, LLC PROFESSIONALE
OHADIFOETATS
E R IC KSON
KSSOR1 0 8 1 3
NGIN
E
ERREG I STERED
6-9-23Plans Are Accepted For PublicStreet Construction- -7-5-23
LD-RSUB-2023-0013 & FP-2023-0008 & A-2023-0102SEEPAGE BED CROSS SECTION 1
SD.3
1,000 GALLON SAND AND GREASE (S & G) TRAP 2
SD.3
DRAIN ROCK SPECIFICATION GEOTEXTILE SPECIFICATION
SD.3
1
1. NON WOVEN FILTER FABRIC ON TOP, ENDS, AND ALL SIDES OF
SEEPAGE BED.
CONCRETE COLLAR PER ISPWC SD-616 (REQ. IN ALL
PAVED AREAS. NOT REQUIRED WHERE SAND AND
GREASE TRAP LIDS ARE LOCATED COMPLETELY
WITHIN A PLANTER
GROUT (TYP.)
24" DIA. CAST IRON
RING AND COVER
PIPE INVERT
(GROUT)20"
8'8"12"
SEE NOTE 4
TOP OF LOWER
BAFFLE EL.
PLACE TRAPS ON 8" THICKNESS OF CHIPS
OVER NATIVE UNDISTURBED EARTHAS REQ.1,000 GALLON SAND AND
GREASE TRAP 5'-2"6" MINGROUT
GROUT
GROUT
GROUT
GROUT
GROUT
GROUT
BACKFILL
SAND AND GREASE
TRAP WITH CHIPS
ROADWAY SECTION
OR LANDSCAPE PLANTER
(SEE PLANS)
PLACE WOVEN GEOTEXTILE FABRIC
ON PAVEMENT SECTION SUBGRADE
OVER SAND AND GREASE TRAP.
FABRIC SHALL EXTEND A MINIMUM OF
6-FEET BEYOND THE SAND AND
GREASE TRAP ON ALL SIDES. (SKAPS
GEONET TN220 OR APPROVED
EQUAL) - GEOTEXTILE FABRIC IS NOT
REQUIRED UNDER LANDSCAPE
AREAS.
SEEPAGE BED
PIPE
IN
INLET SIDE
OUTLET SIDE35"24" DIA. CAST IRON
RING AND COVER
OF TANKACHD RIGHT-OF-WAY
MONOLITHIC
CONCRETE COLLARS
MONOLITHIC
CONCRETE COLLAR
PER ISPWC SD-616
JOINT
24" DIA. CAST IRON
RING AND COVER"H"SEE NOTESBELOWEL A
EL C
EL B
EL D
WATER TIGHT SEAL
CONCRETE GRADE RINGS AND/OR
RISER SECTION AS REQUIRED
(12" MAX GRADE RING HEIGHT)
FLOW
OUT
NOTES
1. MUST BE RATED FOR HS-25 TRAFFIC LOADS
2. INTERIOR DIMENSIONS OF TRAP MUST BE A MINIMUM OF 48" X 24" AT THE THROAT LOCATION.
3. THE DETAIL ABOVE SHOWS AN VALLEY PRECAST 1,000 GALLON SAND & GREASE TRAP.
4. THE SAND AND GREASE TRAPS SHALL BE SET SO THAT THE TOP OF LOWER BAFFLE ELEVATION, THE IE'S PIPES
ENTERING, AND THE PIPES EXITING ARE IN ACCORDANCE WITH THE PROJECT PLANS AND NOTE 9 BELOW.
5. SAND AND GREASE TRAP COVERS SHALL MATCH THE FINISHED GRADE ELEVATION AND SLOPE.
6. SOLID COVERS SHALL HAVE THE WORDS "STORM DRAIN" CAST INTO THE LID.
7. DO NOT CONSTRUCT CONCRETE COLLARS FOR SAND AND GREASE TRAP COVERS LOCATED COMPLETELY
WITHIN LANDSCAPE AREAS.
8. H<1FT USE GRADE RINGS (TYP.)
1-FT < H <= 2-FT USE 24" DIA. RCP RISER;
2-FT < H <= 10-FT USE 48" MANHOLE CONE AND 48" RISERS.
9. EL. A > EL. B BY 0.10 MIN; EL. D < EL. B BY 0.85 MIN.; EL. C < EL. B BY 0.50 MIN.
10. MANHOLE FRAME AND COVER PER ISPWC SD-617.
11. BOX MANUFACTURER SHALL MARK FLOW DIRECTION AND LABEL INLET AND OUTLET ON SIDE OF BOX.
12. SEE ACHD STORMWATER DESIGN GUIDELINES BMP #1 "SAND AND GREASE TRAP" FOR ADDITIONAL
REQUIREMENTS.
1
2 PERFORATED 18" HDPE
PIPE @ 0.0% (SEE
INFILTRATION GALLERY
SECTION DETAIL
5.00' NON. PERF.
PIPE (TYP.)
24" DIA. CAST IRON
RING AND COVER
CONCRETE COLLARS ARE NOT
REQUIRED WHEN LID IS LOCATED
COMPLETELY WITHIN A PLANTER AREA
SOLID WALL
ADS HDPE
PIPE @ 0.0%
NON. PERF.
PIPE 5.0' INTO
SEEPAGE BEDINLET SIDE18" 1
2 PERF. PIPE
PERFORATION
SCHEDULE
38" DIA PERFORATION IN
VALLEYS OF CORRUGATED
PIPE. 5 EA.
18" DIA. DUAL
WALL ADS PIPE
(SEE PLAN FOR PIPE SIZE)45°45°45°45°3/8" DIA.
PERFORATION
18" PIPE PERF. EL
SEE PLAN FOR PIPE SIZE
INSTALL 6 OZ/SY NON-WOVEN GEOTEXTILE FABRIC
AASHTO M288 CLASS 2 ON TOP & SIDES
IMPERMEABLE SILTS AND CLAY
EXISTING POORLY GRADED GRAVEL
FINISHED GRADE
SEEPAGE BED WIDTH = SEE PLANS
VARIESTOP OF
DRAIN ROCK
BOTTOM OF DRAIN ROCK/
TOP OF ASTM C33 SAND
BOTTOM OF ASTM C33 SAND
BOTTOM OF
DRAIN ROCK
STRUCTURAL FILL BETWEEN BOTTOM OF ROAD SECTION
AND TOP OF DRAIN ROCK FOR BEDS WITHIN PAVED AREAS
COMPACTED TO 95% MAX DRY DENSITY PER ASTM D1557
2" CLEAN ANGULAR DRAIN ROCK
ASTM C33 FILTER SANDDRAIN ROCKTHICKNESSGROUND WATER EL = GREATER THAN 20.00 FEET BGS VARIES18" DIAMETER DUAL WALL ADS 1
2 PERFORATED
PIPE @ 0.0% (SEE PLAN FOR PIPE SIZE ). PIPE
SHALL BE PERFORATED AS SHOWN ON THE PIPE
PERFORATION SCHEDULE INCLUDED ON THIS
DETAIL SHEET - CAP END.
PERFORATED PIPE IE TO
TOP OF DRAIN ROCK
18" 1
2 PERFORATED PIPE IE. -
SEE PLAN FOR PIPE SIZE AND
PLACEMENT IN BED
3.00'MIN.1.50'DESIGN INFILTRATION RATE = 8.0" PER HOUR
(ALL SEEPAGE BEDS)
1
1
11.50' MN. COVERSTORM DRAIN - DETAILS 1 SEEPAGE BED NOTES:
1. CONTRACTOR SHALL NOTIFY ENGINEER IMMEDIATELY IF GROUNDWATER
IS ENCOUNTERED AT AN ELEVATION HIGHER THAN THE BOTTOM
ELEVATION OF THE LINED SEEPAGE BED; OR, WITHIN 3-FEET OF THE
BOTTOM ELEVATION OF AN UNLINED SEEPAGE BED.
2. ALL GEOTEXTILE FABRIC SEAMS SHALL OVERLAP 1-FOOT MINIMUM,
UNLESS OTHERWISE DIRECTED BY THE MANUFACTURER.
3. THE FULL ROADWAY SECTION IS REQUIRED OVER THE SEEPAGE BED IN
PAVED AREAS.
4. SEE STORM DRAIN PLANS FOR ADDITIONAL INFORMATION.
5. THE BOTTOM ASTM C33 SAND ELEVATION IS THE MINIMUM EXCAVATION
DEPTH.
6. SEE ACHD STORMWATER DESIGN GUIDELINES BMP #20 "SEEPAGE BED"
FOR ADDITIONAL REQUIREMENTS - "OPTIONAL CHAMBERS ARE NOT
REQUIRED.
7. GROUNDWATER WAS DETERMINED WITHIN THE PROJECT GEOTECHNICAL
REPORT TO BE DEEPER THAN 2558, WHICH IS DEEPER THAN 20-FEET
BELOW THE GROUND SURFACE AS DETERMINED WITHIN THE
GOETECHNICAL REPORT PREPARED BY JACOBS DATED 1/31/20.
8. THE DESIGN VOLUME OF THE FACILITY DOES NOT INCLUDE VOIDS WITHIN
THE ASTM C33 FILTER SAND LOCATED AT THE BOTTOM OF THE FACILITY.
9. THE SEEPAGE BED WIDTH SHALL REMAIN CONSTANT ALONG THE
LONGITUDINAL LENGTH OF THE SEEPAGE BED.
10. IF ROCK IS ENCOUNTERED, CONTRACTOR MUST HAVE A PERCOLATION
TEST PERFORMED BY A SOILS ENGINEER AFTER SEEPAGE BED IS FULLY
EXCAVATED (NOTE: AN ACHD INSPECTOR MUST BE PRESENT TO WITNESS
THE TEST FOR IT TO BE CONSIDERED VALID). IF THE PERCOLATION IS
LESS THAN THAT SPECIFIED BY THE SOILS REPORT AND ENGINEER,
CONTRACTOR MAY NEED TO BLAST OR BORE TO CREATE CONDUIT FOR
DRAINAGE TO OCCUR, OR RE-DESIGN THE SYSTEM TO ACHIEVE THE
REQUIRED INFILTRATION. ACHD APPROVAL IS REQUIRED FOR ANY
MODIFICATIONS TO THE STAMPED, APPROVED DESIGN PLANS.
11. FOR UNDERGROUND INFILTRATION SYSTEMS, INSTALL ELECTRONIC
MARKERS ON EACH CORNER OF THE FACILITY. THE CONTRACTOR SHALL
COORDINATE WITH THE ACHD INSPECTION DEPARTMENT FOR PLACEMENT
OF THE MARKERS DURING CONSTRUCTION, AND PRIOR TO BACKFILLING.
PRIVATE SEEPAGE BEDS DO NOT REQUIRE ELECTRONIC MARKERS.
PERCOLATION TEST REQUIRED AT EACH
SEEPAGE BED LOCATION:
1. THE DESIGN PERCOLATION RATE FOR THE SEEPAGE BED INFILTRATION
FACILITIES IS 8 INCHES/HR. UNDER DIRECTION OF THE OWNER'S
GEOTECHNICAL REPRESENTATIVE, CONTRACTOR SHALL CONDUCT A
PERCOLATION TEST TO BE WITNESSED BY THE OWNER'S
GEOTECHNICAL REPRESENTATIVE & ACHD. ACHD IS NOT REQUIRED TO
WITNESS PERCOLATION TESTS FOR PRIVATE INFILTRATION FACILITIES.
CONTRACTOR SHALL PROVIDE ALL WATER, AND OTHER MATERIALS
REQUIRED TO PERFORM THE TEST. THE PERCOLATION TEST SHALL BE
PERFORMED BY THE SOILS ENGINEER AFTER THE SEEPAGE BED IS
EXCAVATED TO VERIFY THE DESIGN INFILTRATION RATE. (NOTE: AN
ACHD INSPECTOR MUST BE PRESENT TO WITNESS THE TEST FOR IT TO
BE CONSIDERED VALID). IF THE PERCOLATION IS LESS THAN THAT
SPECIFIED BY THE SOILS REPORT AND ENGINEER, CONTRACTOR SHALL
CONTACT ENGINEER TO RE-DESIGN THE SYSTEM TO ACHIEVE THE
REQUIRED INFILTRATION. ACHD APPROVAL IS REQUIRED FOR ANY
MODIFICATIONS TO THE STAMPED, APPROVED DESIGN PLANS.
STORM DRAIN SERVICE 3
SD.3
FLOWFLOW FLOW
6" SDR 35 PVC6" X 4" WYE
4" SDR 35 PVC @ 2.0%3.00'FLOWPROPERTY LINE2.00'SIDE LOT LINE
5.00'
C/L
1.00'2.00'
FINISHED
GRADE P/LC/LSERVICERISERC/L 6"STORMCOMMON LOT
BUILDING LOT PVC THREADED CAP
PVC THREADED CAP
4" SDR 35 PVC WYE
4" SDR 35 PVC RISER
4" SDR 35 PVC @ 2.0%
6" X 4" SDR 35 PVC WYE FLOW 2.00'PLAN VIEW SECTION VIEW A-A
A
A
COMMON LOT
BUILDING LOT
STORM DRAIN SERVICE
STORM DRAIN SERVICE
08/04/23
FP-2023-0008