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CONSULTING ENGINEERS
70' DEXTER AVENUE NORTH SUITE 200
SEATTLE, WASHINGTON DOM (206) 284 -0860
SECTION 32, TWP 24 N, R 5 E, W.M.
24" 0 ACCESS
HATCH
BAFFLE WALL -
TOP EL. =28.62
24" SHEAR GATE
W /CONTROL ROD
1" (POLY) SAFETY TYPE :. - == - - -7% _ `: LF, 2682
MANHOLE
LOCATED
STEPS __.�,' ✓
AT 12" O.C.
'�
24 CPEP
MULLEN BURST STRENGTH (ASTM D3786 -800)
400 PSI MIN.
ADS (ASTM D4751)
20 -45 (U.S. STANDARD SIEVE SIZE)
IE . 16.39
` OUTLET PIPE
12"
CPEP
TO
BIOSWALE
I e =
17.49
' - y
',.....:
� 72 "0 PRECAST MH
24" CPEP
-
----- --
LE. =26.62
-
BYPASS PIPE
° _ i_
-77 - -- — "'c-
24 CPEP
- —i
1" (POLY) SAFETY TYPE
ROD FOR CLEANOUT
I e. = 26.49
MANHOLE STEPS
LOCATED AT 12" O.C.
FLOW RESTRICTOR /SEPARATOR
P
`
1
1
RIM EL. 33.05
FLOW RESTRICTOR / SEPERATOR
v.
PIPE SUPPORT(S):
SEE NOTE 3
`INLET PIPE
200 PSI MIN.
'�
24 CPEP
MULLEN BURST STRENGTH (ASTM D3786 -800)
400 PSI MIN.
ADS (ASTM D4751)
20 -45 (U.S. STANDARD SIEVE SIZE)
IE . 16.39
` OUTLET PIPE
12"
CPEP
TO
BIOSWALE
I e =
17.49
D'
CB2 FLOW SPUTTER 1
NOT TO SCALE 5
L-6° MIN.
GRADE TO DRAIN (TYP.)
SEPERA71ON GEOTEXTILE TO BE
PLACED UNDER ROCK (SEE NOTE 1).
MINUS ROCK
1>b1tEB
1. GEOTEXTILE SHALL MEET THE FOLLONING STANDARDS:
GRAB TENSILE STRENGTH (ASTM D4751)
200 PSI MIN.
'�
24" 0 ACCESS
MULLEN BURST STRENGTH (ASTM D3786 -800)
400 PSI MIN.
ADS (ASTM D4751)
20 -45 (U.S. STANDARD SIEVE SIZE)
HATCH
6
' - y
',.....:
� 72 "0 PRECAST MH
24" CPEP
-
----- --
LE. =26.62
-
SHEAR GATE W /CONTROL
1" (POLY) SAFETY TYPE
ROD FOR CLEANOUT
'
MANHOLE STEPS
LOCATED AT 12" O.C.
FLOW RESTRICTOR /SEPARATOR
Q4Qgs�P
GAO
.N •n•
00,`ryo� a
11 n-4
Nlm'g
WELDED RESTRICTOR
PLATE WITH 3" DIA.
ORIFICE AT EL =25.79
CB2 FLOW SPUTTER 1
NOT TO SCALE 5
L-6° MIN.
GRADE TO DRAIN (TYP.)
SEPERA71ON GEOTEXTILE TO BE
PLACED UNDER ROCK (SEE NOTE 1).
MINUS ROCK
1>b1tEB
1. GEOTEXTILE SHALL MEET THE FOLLONING STANDARDS:
GRAB TENSILE STRENGTH (ASTM D4751)
200 PSI MIN.
GRAB TENSILE STRENGTH (ASTM D4632)
30% MAX.
MULLEN BURST STRENGTH (ASTM D3786 -800)
400 PSI MIN.
ADS (ASTM D4751)
20 -45 (U.S. STANDARD SIEVE SIZE)
WAHLSTROM, PLS #44651
(INFORMED LAND SURVEY)
THE ORIGINAL PLANS WERE STAMPED
BY SC AND BB ON 2114/2011 & 2/1512011
GRAVEL ACCESS PAD 2
NOT TO SCALE 5
''Lim • E 70.VM WATIO
IEimim,
2 - 24 "O ACCESS HATCH
D. .
I.E. =30.00
o-T 0
T2' -0" MIN
1' -0"
2' -0" MIN
SECTION A
NOT TO SCALE _
72 "0 PRECAST MH
SHEAR GATE W /CONTROL
ROD FOR CLEANOUT
BAFFLE WALL
TOP EL. 28.62
24" SHEAR GATE
W /CONTROL ROD
I.E.= 26.62
24" CPEP
69._26.622 ..
IE� 74.39
D
EL. =22.62
NOTES:
1. THE RESTRICTOR /SEPARATOR SHALL BE FABRICATED FROM .60"
ALUMINUM OR .064" .ALUMINIZED STEEL OR .064" GALVANIZED STEEL
PIPE IN ACCORDANCE WITH AASHTO M 36, M196 AND M274. GALVANIZED
STEEL SHALL HAVE ASPHALT TREATMENT 1.
2. OUTLET SHALL BE CONNECTED TO STORM DRAIN PIPE WITH A COUPLING
BAND.
3. PROVIDE AT LEAST DINE 3 "x0.090" SUPPORT BRACKET ANCHORED TO
CONCRETE WALL. (MAXIMUM 3' -0" VERTICAL SPACING.)
4. FRAME AND LADDER CDR STEPS SHALL BE OFFSET SO THAT (1)
CLEANOUT GATE IS VISIBLE FROM TOP. (2) CLIMB -DOWN SPACE IS CLEAR
OF RISER AND CLEANOUT GATE. (3) FRAME IS CLEAR OF CURB.
5. CLEANOUT GATE /SHEAR GATE:
ALUMINUM ALLOY PER ASTM B26 -ZG32A OR CAST IRON ASTM A48
CLASS 30B AS REQUIRED. LIFT HANDLE EITHER SOLID OR TUBING
WITH ADJUSTABLE HOOK AS REQUIRED. NEOPRENE RUBBER GASKETS
REQUIRED BETWEEN FLANGES.
6. METAL PARTS: CORROSION RESISTANT ALUMINUM. IF STEEL SUBSTITUTED
FOR ALUMINMUM, GALVANIZED PARTS NEED TO HAVE ASPHALT
TREATMENT 1.
7. BAFFLE WALL SHALL BE FABRICATED TO WITHSTAND 2 FEET OF HYDRO
STATIC PRESSURE. CONTRACTOR SHALL SUBMIT SHOP DRAWINGS FOR
REVIEW.
SUR.tl}R 9'.11P
r�:NpDIOT
CITY OF
oWt B.P.B. .� RENTON
C.J.K. ' arc nom DATUM
°� AT�6.,E I Public Works Dept.
SA.C.
T.O UE pg aa<x
Apq�p� VE �Y
B.P.B.
AS -BUILT
-353 1 0,
OpE
LAKE WASHINGTON BLVD NORTH 2/14/11
STORM WATER & WATER MAIN
IMPROVEMENTS
STORM NOTES AND DETAILS
8 OR 27
I