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DETENTION PIPE SYSTEM PLAN
NOT TO SCALE
uc r, i o,, n r cunRT
(4) #5 TOP &
BOTTOM
LONG BARS
-10
CB-11
12
DETENTION TANK
ACCESS RISER,
TYP@C5.5
(4) #5 TOP &
BOTTOM
LONG BARS
2" O AIR VENT CI
CONTRO
36'
TO
DETENTION PIPE SYSTEM TYPICAL SECTION
NOT TO SCALE
CL
1/2" RADIUS
BULLNOSE EDGE
TYP. 4 SIDES
CONCRET
INCREASE DEPTH N�
AS REQUIRED TO
MEET VERTICAL
ELEVATION OF THE ]
ACCESS RISER /
#5 DIAGONALS
TOP & BOTTOM
CONCRETE: 4000 PSI MIN. @ 28
DAYS 6 SACK MIX REBAR
GRADE 60
incTCK1T1nK1 PIPP OC'_C'_FSS RISER
V5. 1 i`I'm 1 ■v■. ■ .. t� -- --- - - -- NOT TO SCALE
RECORD NOTE 10/08/2018
AHBL CERTIFIES THE ACCURACY OF THESE
AS -BUILT DRAWINGS WHICH ARE COMPRISED OF
APPROVED ENGINEERING PLANS AND
CONSTRUCTION CHANGES PROVIDED BY THE
CONTRACTOR FOR THE PROJECT KNOWN AS
LINDBERGH HIGH SCHOOL PARKING LOT
IMPROVEMENTS. BASED ON THE STANDARD OF
CARE AND EXPERTISE THAT IS USUAL AND
CUSTOMARY IN THIS COMMUNITY FOR
PROFESSIONAL ENGINEERS IT APPEARS THAT
WORK WAS COMPLETED IN SUBSTANTIAL
0 CONFORMANCE WITH THE APPROVED CIVIL
0 ENGINEERING PERMIT DOCUMENTS.
Know what's below.
Call before you dig.
AHBL PROJECT 2170057.10
NOTICE
ALTERATION OF THIS DOCUMENT SHALL INVALIDATE THE
AS BUILT PROFESSIONAL �� AND SIGNATURE. PUBLIFROM RESERVED
ED
OF
THIS DOCUMENT DOES NOT DEROGATE FIigA RESERVED
OVNERSHIP RIGHTS IN IT. THIS DOCUMENT IS FOR USE
ONLY FOR THE PROJECT IDENTIFIED IN THE TITLE BLOCK
AND IS NOT TO BE USED FOR REPAIR, REMODEL OR
ADDITION TO THAT PROJECT OR FOR ANY OTHER PROJECT.
y0
of WASft -6'
.pow REc 180E Eo lw
�`SIONAL
N
� �Illll®
6" MIN.
6" MIN.
PE
Im
T A C O M A. SEATTLE SPOKANE TRI-CITIES 1
2215 North 30th Street, Suite 300 Tacoma, WA 98403 NO.
253.383.2422 TEL 253,383.2572 FAX www.ahbl.com WEB
NOTES:
1. ALL TANKS CMP, 5" X 1", (16 Ga.),
oAT S=0.0%. ALUMINIZED OR
U GALVANIZED WITH TREATMENTS 1,
2OR5.
GRAVEL BACKFILL FOR DRAINS
WSDOT 9-03.12(4)
'LAN
-- -
BOLT -DOWN CIRCULAR FRAME •°•°°°• _____
AND COVER PER WSDOT STD "-'--"'-'-
PLAN B-30.70-03 EDGE OF SLAB SHALL EXTEND
LOAD TRANSFER SLAB I PAST EDGE OF TANK AND
SHALL NOT REST ON PIPE
4" STYROFOAM MAT CUTOUT @ LADDER LATERAL PREFABRICATED LADDER (WSDOT STD. PLAN
LID OPENING SUPPORT SECURED NO. B-30.90-01) ATTACH TO LOAD TRANSFER
�HMA PAVEMENT TO PIPE RISER
AS APPLICABLE, 4' SLAB. TYPICAL FOR ALL PIPE TYPES
W@CG
MAX SPACING, MIN.
CRUSHED SURFACING BASE P 2 REQ'D PER PLAN
COURSE STEPS @ 12 O.C.
12" O.C. EACH WAY
36" O CMP RISER WELDED TO
CMP DETENTION TANK FOR ADS
N-12 PIPE, PROVIDE 36" RISER
FUSED TO DETENTION TANK BY
MANUFACTURER
18" MAX
6" MIN
NOTES:
1. LOAD TRANSFER SLAB IS REQUIRED ON RISERS LOCATED WITHIN PAVED AREAS.
2. LOAD TRANSFER SLAB SHALL BE OMITTED FROM RISERS LOCATED WITHIN RAINGARDEN
AREAS.
3. ACCESS RISERS ARE SAME MATERIAL AS DETENTION TANKS.
4. ACCESS RISER SPACING IS 100' MAXIMUM.
5. ACCESS OPENING SHALL BE CLEARLY MARKED WITH CONFINED SPACE WARNING IN
ACCORDANCE WITH OSHA REQUIREMENTS
SURVEYED:
D. FOLLANSBEE
DESIGNED:
B. SCHEND
BJS 10/08/18 SMC DRAWN.
AS-BUILTS F. KATONA
REVISED PER CITY COMMENTS BJS 7/7/17 SMC cNEGICEDW FIERST
REVISION BY DATE APPR APPROVED:
S. COMFORT
ONE INCH
AT FULL SCALE
IF NOT ONE INCH
SCALE ACCORDINGLY
VERTICAL: NAVD 1988
HORIZONTALNAD 1983/1991
DATU M
a
limits of pipe
A� see note 4
( )
m3'
O.D. compaction
max. 3' max.
limit of pipe zone
z
bedding
°
material
fortlexlble
pipe (-
rote 6)
0.15 O.D. min_
�
comor pipe O.fiS O.D. min.
compaction �
foundation a
level
gravel backfill gravel backfil l for
for pipe bedding foundations when specified
• A = 4" min 27" I.D. and under
6" min., over 27" I.D.
A. Metal and Concrete Pipe
Bedding for Flexible Pipe
span span span 3' max
Flexible Pipe NOTES:
3• max max
1. Provide uniform support under barrels.
2. Hand tamp under haunches.
3. Compact bedding material to 95% max. density; directly
over pipe, hand tamp only.
0 0.15 rise min.
4. See "Excavation and Preparation of Trench" in sanitary
sewers section of the standard WSDOT/APWA
specifications for trench width "W" and trenching
limits of pipe
compaction .65 rise min.
options. The plpe zone will be the actual trench width.
The minimum concrete width shall be 1 '' I.D. = 18".
gravel backfill for
5. Trench backfill shall conform to "Backfilling Sewer
gravel backfill
for pipe bedding foundations when specified
Trenches" in the sanitary sewers section of the
WSDOT/APWA standard specifications, except that
rocks or lumps larger than 1" per foot of pipe diameter
B. Pipe - Arch Installation
shall not be used In the backfill material.
6. See "Bedding Material for Flexible Pipe" in aggregates
section of the WSDOT/APWA standard specifications
for the material specifications.
Rigid Pipe NOTES:
1. Pipe compaction limits shown on this plan are for pipe
construction in an embankment. For pipe construction
in a trench, the horizontal limits of the pipe compaction
zone shall be the walls of the trench.
2. All steel and aluminum pipe and pipe -arches shall be
installed in accordance with design A.
shall be
® Backfill material placed in 0.5' loose layers and
3. Concrete pipe with elliptical reinforcement
compacted to 95 % maximum density.
installed in accordance with design A.
4. Concrete pipe plain or with circular reinforcement, shall
A.
Method B or C compaction (WSDOT/APWA)
be installed with design
standard specifications.)
5. O.D. Is equal to the outside diameter of a pipe or the
outside span of pipe -arch. The dimensions shown as
O D with T maximum shall be O.D. until O.D. equals
3'; at which point 3' shall be used.
1'-0" for diameters 12" through 42" and spans through
50". 2'-0" for diameters greater than 42" and spans
greater than 50".
Pipe
Size
Min. dis"
een
been
barrels
circular pipe
conc., LCPE, CMPto
(diameter)
o 24"
12"
96"
diam. / 2
o 180"
E43"
48"
pipe - arch
metal only
(span)
to 36"
12"
o 142"
span / 3
148"to 199"
48"
to
•
•
r*,_
00
N
��Y o STD. PLAN - 220.00 C)
PUBLIC WORKS PIPE COMPACTION O
DEPARTMENT DESIGN AND BACKFILL MARCH 2008 C)
FNrC�
E COMPACTION DESIGN AND BACKFILL
PIP 0-
(COR STD. PLAN 220■00)
NOT TO SCALE
CITY OF
RENTON
Planning/Building/Public Works Dept.
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R-395913
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IN COMPLIANCE WITH CITY OF RENTON
STANDARDS
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LINDBERGH HIGH SCHOOL
DATE:
06/08/2017
FIEIDSOUTH
PAGE: OK.
PAGE:
PARKING LOT IMPROVEMENTS
RENTON SCHOOL DISTRICT
E NOTES &DETAILS 3
DRAINAGE
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DRAWING NO: .�
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