HomeMy WebLinkAboutR-396217NE 1/4 OF THE SW 1/4 AND SE 1/4 OF THE NW 1/4, SEC 29, TWN 23, RGE 5 E, KING COUNTY, WASHING TON
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96"0 CMP DETENTION PIPE AT 0.00%
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LENGTH VARIES, SEE PLAN
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TOP OF PIPE EL-399.06 ,399-9�
36"0 ACCESS MANWAY, TYP
36"0 ACCESS MANWAY, TYP FINISHED GRADE VARIES,
SEE PLAN AND PROFILE -\
TOP OF LIVER 398.73
100 YR WSEg398.54
50 YR WSE= -4 398.54
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10 YR WSE3� 398.50
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2 YR WSE=44�- - 397.67
BEGIN LIVE STORAGE EL3�391.49
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BOTTOM OF PIPE EL�1-9�
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391.06
0.5 SEDIMENT STORAGE 36"0 CMP ACCESS LADDER, TYP
36"0 CMP
36"0 CMP -/
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DETENTION PIPE - TYPICAL PROFILE
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2 L.F. 36 0 SD @ 0.00%
SCALE: 1"=10'
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ACCESS MANWAY PER COR
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STD PLAN 235.10,
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FINISHED GRADE VARIES,
DETENTION TANK ACCESS
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SEE PLAN AND PROFILE
DETAIL, SEE PLAN FOR
LOCATIONS, TYP
399 06
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TOP OF PIPE EL=39 6�
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TOP OF LIVE =38-398.73
0.5' FREE BOARD
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100 YR WSE�398.54
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50 YR WSE�398.54
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10 YR WSE=2'398.50 ��
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2 YR WSE=39 397.67
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BEGIN LIVE STORAGE EL=39�-56 391.49
391.06
BOTTOM OF PIPE EL=391.88
0.5' SEDIMENT STORAGE 36"0 CMP
DETENTION PIPE - TYPICAL SECTION
optional parallel tank
----------
1
_ access dsers
(max spacing shown below)
inlet pipe
(backup systems,
where allowed)
2' min
A
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control
structure
SCALE: 1"=5'
FOR 2 OR MORE ADJACENT PIPES
IF- �- 7
1 I min. diameter
same as inlet pipe
A
flow J
36" J
Oinlet pipe
(flow through)
type 2 CB required
access risers for flow, through
system only
PLAN VIEW
NTS
"Flow -through" system shown solid.
Designs for "flow backup" system and
parallel tanks shown dashed
2" min. diameter air vent
pipe welded to tank
(required if no access
riser on tank)
50' max
100' max
access risers
ON sediment storage
r�
36" min. size as required
2' min diameter (typ)
control structure
(PROP-Tshown) SECTION A -A
min. 54" dia.
Type 2 CB NTS
"Flow -through" system shown solid.
NOTE:
All metal parts corrosion resistant.
Steel parts galvanized and asphalt
coated (Treatment 1 or better)
zY + �► PUBLIC WORKS TYPICAL DETENTION TANK STD. PLAN - 235.00
f, NT DEPARTMENT MARCH 2O08
AS-BOIL T
DRAWINGS
4
Call 2 Business Days Before You Dig
811 or 1-800-424-5555
Utilities Underground Location Center
8' 0 DETENTION TANK PER
COR STD PLAN 235.00
NOTE: CMP 10 GAGE OR
BETTER.
standard type 2-60" clam.
CB concrete top slab
36" CMP riser -,
standard locking
compacted pipe bedding
M.H. steps 12" O.C.
weld or brit
standard M.H. steps
PLAN
NTS
SECTION
NTS
NOTES:
1. Use adjusting blocks as required to bring frame to guide.
2. All materials to be aluminum or galvanized and asphalt coated (Treatment 1 or better).
3. Must be located for access by maintenance vehicles.
4. May substitute WSDOT special Type IV manhole (RCP only).
DETENTION PIPE SUMMARY CHART
STORM
LIVE STORAGE VOLUME (CF)
RELEASE RATE (CSF)
EVENT
REQUIRED
DESIGNED
AS -BUILT
REQUIRED
DESIGNED
AS -BUILT
2 YR
19,555
19,962
0
0.041
0.036
0.036
10 YR
22,267
22,827
22,267
0.074
0.058
0.0573
100 YR
22,352
22,894
22,352
0.098
0.093
0.09L2L]
NOTE PI F1i-F VERIFY/UPDATE
1. SEE APPROVED BUILDING PERMIT 317004182 FOR ADDITIONAL I THESE NUMBERS
CONSTRUCTION DETAILS FOR DETENTION PIPE INSTALLATION.
frame locking lid
(marked "DRAIN")
mounted over 24" diam.
eccentric opening
maintain 1" gap between
dtom of slab & top of
.cr - provide pliable
isket to exclude dirt
riser, 36" diam. min.,
same material & gage as
tank welded or fused to tank
detention tank
PUBLIC WORKS DETENTION TANK STD. PLAN - 235.10
DEPARTMENT ACCESS DETAIL
MARCH 2O08
1 th A N N 1 T4'r- o C! A Ry
Surveying
5
LD Engineering
Planning
20210 142nd Avenue NE Ph. 425.806.1869
Woodinville, WA 98072 Fx. 425.482.2893
www.LDCcorp.com
0 1 AS -BUILT DRAWINGS
NO.
REVISION
0
removable watertight
coupling or flange
frame &solid cover
marked "DRAIN' with locking bolts
2" min.
see note 3
elevation per plans
1' min. under
pavement 16" max.
g" T
vertical bar
� T
gratefor
max.
6" min.
design W.S.
secondary inlet
v
plate welded to elbow
with orifice as specified
elbow restrlctor, see detail
ELBOW
pipe supports
handholds, steps or
RESTRICTOR
see Nole 6
ladder
DETAIL
1.5 x D
min.
2' min.
T
cutlet pipe
inlet
D see notes 1 &
1
dipa
2
shear gate with control
invert and elevation
rod for cleanoutPorein
per plans
-N 12"
(rod bent as required
for vertical alignment
12"
with cover)
o .E
welded restrictor plate
- 12"
with orifice diameter as
IF
specified (not needed if
for spill control only)
/\
SECTION A -A
2' min. clearance
to any portion of frop-T
including elbows
NOTES- A
1. Use a mimimum of a 54" diameter type 2 /
catch basin.
2. Outlet Capacity: 100-Year developed
peak flow.
3. Metal Paris: Corrosion resistant.
elbow resbictor
Non -Galvanized parts perferred. see detail
Galvanized pipe parts to have asphalt
treatment 1.
4. Frame and ladder or steps offset so:
A. Cleanoul gate is visible from lop.
B. Climb -down space is dear of riser and
cleanout gate.
C. Frame is clear of curb.
5. If metal outlet pipe connects to cement
concrete pipe: outlet pipe to have smooth
O.D. equal to concrete pipe I.D. less 4".
6. Provide at least one 3" X .090 gage support bracket anchored to concrete wall.
(maximum T-0" vertical spacing)
7. Locate elbow restriclor(s) as necessary to provide minimum clearance as shown.
S. Locate additional ladder rungs in structures used as access to tanks and vaults to
allow access when catch basin is filled with water.
A
angle as
necessary
see note 7 addtional ladder rungs
2' min (in sets) to allow access
to tanks or vaults when
catch is filled with water
�ZY � PUBLIC WORKS FLOW RESTRICTOR STD. PLAN - 237.00
DEPARTMENT OIL POLLUTION CONTROL
�FN C TEE MARCH 2O08
12" 0
TO CB-1
REMOVABLE WATERTIGH
COUPLING OR FLANGE
2" MIN.
TO ELBOW
6" MIN.
MAX PLATE WELDED TO
ELBOW WITH ORIFICE
AS SPECIFIED
ELBOW RESTRICTOR
RISER EL=398.73
RISER rl =zno �n
D
1 /2" 0 ORIFICE
r- IE=398.22
1-1/8"0 ORIFICE
IE=397.28
4" ELBOW RESTRICTO
SEE DETAIL, TYP
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DISCHARGE TO CB-1 1
IE=391.36 12"� PIPE SUPPORTS -
SEE NOTE 4
RESTRICTOR PLATE
1 /2"0 ORIFICE
IE=389.50
EL=387.50
SEE DETAIL, ` v vDETAIL, TYP"
PLAN
54"0 MIN
ELEVATION
CONTROL STRUCTURE CB-2
SCALE: 1"=2'
TOPOGRAPHIC DISCLAIMER
TOPOGRAPHIC SURVEY INFORMATION CONTAINED ON THESE PLANS HAS
BEEN PROVIDED BY CORNERSTONE ENGINEERING, INC. LDC, INC. (LAND
DEVELOPMENT CONSULTANTS, INC.) ASSUMES NO LIABILITY AS TO THE
ACCURACY AND COMPLETENESS OF THIS DATA. ANY DISCREPANCIES FOUND
BETWEEN WHAT IS SHOWN ON THE PLANS AND WHAT IS NOTED IN THE
FIELD SHOULD BE BROUGHT IMMEDIATELY TO THE ATTENTION OF THE
ENGINEER.
MEV 12-13-18 SURVEYED: SCALE:
LDC VERTICAL: NAVD 1988
AS NOTED
DESIGNED: HORIZONTAL: NAD 1983/1991 C TY O
MEV RENTON
ENTON
NC
ONE INCH DATU M •
CHECKED: MEV AT FULL SCALE Plan ning/Building/Public Works Dept.
IF NOT ONE INCH
BY DATE APPR APPROVED: SCALE ACCORDINGLY
MEV
ROM DETENTION PIPE
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50 YR WS LO
EL=398.47 O
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FROM CB-3
1 FROM DETENTION PIPE
IE=391.49 36
SHEAR GATE WITH CONTROL ROD
FOR CLEANOUT/DRAIN (ROD BENT
AS REQUIRED FOR VERTICAL
ALIGNMENT WITH COVER)
M
N COMPLIANCE WITH CITY OF RENTON STANDARDS W
RENTON SPECIAL CARE COMMUNITY, LLC
RENTON SPECIAL CARE COMMUNITY
17033 108THAVE SE, RENTON, WA 98055
STORM DRAINAGE DETENTION PLAN
R-396217
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DATE: C^
FIELDO00 .- O 8 - 1 7 ��♦♦
PAGE: O
DRAWING NO:
SD-01 Z
SHEET: 7F:
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