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Call before you dig.
4"-6" RECOMMENDED
CURB INLET THROAT
OPENING
CAST -IN PLACE CURB &
GUTTER BY OTHERS
CURB INLET DETAIL
SEE CURB INLET DETAIL
THIS SHEET
LEFT END VIEW
ALTERNATE OUTLET
LOCATION
M11i
012" RCP MAX. OUTLET
INLET CONTOUR RACK WITH
PERFORATED FLOOR
OPENING TO BIOFILTRATION CHAMBER
18"X36" ACCESS HATCH
BYPASS WEIR/OUTLET BAY
6" TOP SLAB -
-I—
4'-0" 3'-0"
4X6 BIOPOD SURFACE VAULT WITH INTERNAL BYPASS
NOT TO SCALE
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�i T A C O M A S E A T T L E
�46 SPOKANE TRI-CITIES
��of sslGIST 9 Eg�1�� 2215 North 30th Street, Suite 300 Tacoma, WA 98403
ONAL E 253.383.2422 TEL 253.383.2572 FAX www.ahbl.com WEB
07/21 /2025
7'-0"
4'-0" -1
PLAN VIEW
ELEVATION VIEW
ALTERNATE INLET
LOCATIONS AVAILABLE
CURB INLET WITH 6" NOSING
24"x7" OPENING
FOR CURB INLET
36"X36" ACCESS HATCH
2"
MULCH
1'-T
StormMixTM MEDIA
6" DRAIN ROCK
UNDERDRAIN PIPE
Bioretention/
Biofiltration
NOTES:
1. DESIGN LOADINGS:
A. 300 PSF PEDESTRIAN LOADING
B. DESIGN SOIL COVER: 0' MAXIMUM
C. ASSUMED WATER TABLE: BELOW BASE OF
PRECAST
(ENGINEER -OF -RECORD TO CONFIRM SITE
WATER TABLE ELEVATION)
D. LATERAL EARTH PRESSURE: 45 PCF
(DRAINED)
E. LATERAL LIVE LOAD SURCHARGE: 80 PSF
(APPLIED TO 8'-0" BELOW GRADE)
F. NO LATERAL SURCHARGE FROM ADJACENT
BUILDINGS, WALLS, PIERS, OR FOUNDATIONS.
2. CONCRETE 28-DAY MINIMUM COMPRESSIVE
STRENGTH: 5,000 PSI MINIMUM.
3. REINFORCING: REBAR, ASTM A615/A706, GRADE 60
4. CEMENT: ASTM C150
5. REQUIRED ALLOWABLE SOIL BEARING CAPACITY:
2,500 PSF
6. REFERENCE STANDARD:
A. ASTM C890
B. ASTM C913
C. ACI318-14
7. THIS STRUCTURE IS DESIGNED TO THE
PARAMETERS NOTED HEREIN.
ENGINEER -OF -RECORD SHALL VERIFY THAT NOTED
PARAMETERS MEET OR EXCEED PROJECT
REQUIREMENTS. IF DESIGN PARAMETERS ARE
INCORRECT, REVIEWING ENGINEER/AUTHORITY
SHALL NOTIFY OLDCASTLE INFRASTRUCTURE UPON
REVIEW.
8. INLET AND OUTLET HOLES WILL BE FACTORY
CORED/CAST PER PLANS AND CUSTOMER
REQUIREMENTS. INLET AND OUTLET LOCATIONS
CAN BE MIRRORED.
9. CONTRACTOR RESPONSIBLE TO VERIFY ALL SIZES,
LOCATIONS, AND ELEVATIONS OF OPENINGS.
10. CONTRACTOR RESPONSIBLE TO ENSURE
ADEQUATE BEARING SURFACE IS PROVIDED (I.E.
COMPACTED AND LEVEL PER PROJECT
SPECIFICATIONS).
11. SECTION HEIGHTS, SLAB/WALL THICKNESSES, AND
KEYWAYS ARE SUBJECT TO CHANGE AS REQUIRED
FOR SITE REQUIREMENTS AND/OR DUE TO
PRODUCT AVAILABILITY AND PRODUCTION FACILITY
CONSTRAINTS.
12. MAXIMUM PICK WEIGHTS":
A. TOP: XX,XXX LBS
B. BASE: XX,XXX LBS'
(' COMBINED WEIGHT OF BASE INCLUDES
BYPASS WEIR, DIVIDER WALL, ROCK & MEDIA)
13. INTERNALS SHALL CONSIST OF UNDERDRAIN
PIPE, ROCK, STORMMIXTA4 MEDIA, MULCH, AND INLET
CONTOUR RACK.
R-433511
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