HomeMy WebLinkAbout252.10SLOPE VEGETATION
PER DETENTION
FACILITY REQUIREMENTS
VVt l F'UUL 1-LUVV LtNU I rl = J R VVIU I rl IWIN.
ACCESS ROAD WETPOOL DEPTH 8' MAX.
PER DETENTION FIRST CELL RECIRCULATION RECOMMENDED FOR DEPTH > 6'.
FACILITY REQUIREMENTS DEPTH 4' MIN.
TO 8' MAX.
DETENTION
EMERGENCY OVERFLOW WS PER DETENTION
FACILITY REQUIREMENTS
WQ DESIGN WS
2' min. 3 1
SUBMERGED INLET���/�
j // /// // / / �j ��////////////// EMERGENT VEGETATION
PER DETENTION FACILITY
KEYEDREQUIRED FOR WETPOOL
NOTE: BERM SLOPE DEPTHS TOR LESS.
INLET EROSION CONTROU
MAYBE 2:1 WHEN TOP
SLOPE PROTECTION PER
TOP OF BERM OR OF BERM SUBMERGED
DETENTION FACILITY
BAFFLE LEVEL AND 1' BELOW WQ DESIGN WS
REQUIREMENTS
AT WETPOOL DESIGN
ELEVATION (FLOW
EXITS FIRST CELL OVER
BELOW TOP
BERM) OR AS NOTED
SEDIMENT STORAGE
OF INTERNAL 18" min.
DEPTH = V MIN.
SECTION A -A
NTS
OUTLET PIPE INVERT OUT AT
WETPOOL WS ELEVATION
FENCE REQUIRED
ACCESS ROAD
EMERGENCY OVERFLOW WS
DETENTDETENTION ION WS
CAPACITY CAPACITY OF OUTLET SYSTEM
D DESIGN WSOW
=
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PER DETENTION FACILITY
REQUIREMENTS
WQ DESIGN WS
INVERT 6" MIN.
BELOW TOP
OF INTERNAL 18" min.
BERM. LOWER
PLACEMENT
IS DESIRABLE.
GRAVITY DRAIN
TYPE 2
(IF GRADE ALLOWS)
VALVE
CATCH BASIN
8" MIN. DIAMETER
W/SUMP
EXTERIOR BERMS DESIGNED PER
DAM SAFETY REQUIREMENTS
IF APPLICABLE
SECTION B -B
NOTE: NTS
1.This detail is a schematic representation only. Actual configuration
will vary depending on specific site constraints and applicable
design criteria.
2.Access Road shall meet the following design criteria.
2.1. Maximum grade shall be 15 % for asphalt paving and 12 % for gravel or modular grid paving.
2.2. Outside turning radius shall be 40 feet, minimum.
2.3. Fence gates shall be located only on straight section of road.
2.4. Access roads shall be 15 feet in width on curves and 12 feet n straight sections.
2.5. A paved apron shall be provided where access roads connect to paved public roadways.
3. All facilities shall be fenced. Fence shall be provided around facility allowing proper maintenance per standard details unless
otherwise specified.
I y STD. PLAN 252.10
PUBLIC WORKS COMBINED DETENTION
DEPARTMENT AND WETPOND - SECTIONS
�N,�p MARCH 2008